North Prairie Rural Water District
System I -- 2007
Water Quality Report
We are pleased to present to you this year's Water Quality Report. This report is designed to inform you about the safe clean water we deliver to you every day. Our constant goal is to provide you with a safe and dependable supply of drinking water. We want you to understand the efforts we make to continually improve the water treatment process and protect our water resources. North Prairie Rural Water District (NPRWD) (System I) purchases water from the City of Minot. Minot’s water source is the Souris River, Minot Aquifer, and the Sundre Aquifer. The Minot Aquifer basically follows the Souris River. City wells in this aquifer are located in the west part of Minot. The Sundre Aquifer comes from the north, travels under Minot, turns and goes southeast to the county line. The city’s wells in this aquifer are about five miles southeast of town where the aquifer passes under the Souris River. Traditionally, Minot used about 60% Sundre Aquifer water, 40% Minot Aquifer water in the year 2007. Minot’s water treatment plant is located beside the Souris River at 900 16th Street SW. Water treatment includes iron and manganese removal, lime softening, fluoridation and chlorination.
The City of Minot has been an active participant in the North Dakota Wellhead Protection Program. This program was set up by the North Dakota State Health Department to help preserve and protect the water quality of the Minot and Sundre Aquifers. The North Dakota Department of Health has also prepared a Source Water Assessment for the City of Minot and for North Prairie Rural Water District. Information regarding this program is available upon request.
Our public water system, in cooperation with the North Dakota Department of Health, has completed the delineation and contaminant/land use inventory elements of the North Dakota Source Water Protection Program. Based on the information from these elements, the North Dakota Department of Health has determined that our source water is moderately susceptible to potential contaminants.
If you have any questions about this report or concerning your water utility, please contact Ralph Packulak, Manager at 701-852-1886 or Toll Free at 1-800-536-3150. We want our customers to be informed about their water utility and the quality of water they supply. If you want to learn more, please attend any of our regularly scheduled board of directors meetings. They are held on the second Thursday of each month, at 7:00 a.m. in Minot, North Dakota. If you are aware of non-English speaking individuals who need help with the appropriate language translation, please call Ralph at the number listed above.
North Prairie Rural Water District would appreciate it if large volume water customers would please post copies of this Water Quality Report in conspicuous locations or distribute them to tenants, residents, patients, students, and/or employees, so individuals who consume the water, but do not receive a water bill, can learn about our water system.
North Prairie Rural Water District routinely monitors for contaminants in your drinking water according to Federal and State laws. The following tables show the results of our monitoring for the period of January 1st to December 31st, 2007. As authorized and approved by EPA, the state has reduced monitoring requirements for certain contaminants to less often than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year. Some of our data [e.g., for inorganic contaminants], though representative, is more than one year old.
Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential effects can be obtained by calling the EPA’s Safe Drinking Water Hotline (800-426-4791).
The sources of drinking water (both tap and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land, or through the ground, it dissolves naturally occurring minerals, and in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.
Contaminants That May Be Present in Source Water:
Microbial Contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
Inorganic Contaminants, such as salts and metals, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
Pesticides and Herbicides, which come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
Organic Chemical Contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
Radioactive Contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.
In order to ensure that tap water is safe to drink, the EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for public health.
In the following tables you will find many terms and abbreviations you might not be familiar with. To help you better understand these terms, we have provided the following definitions:
Uranium (pCi/L) -- Some people who drink water containing uranium in excess of the MCL over many years may have an increased risk of getting cancer and kidney toxicity.
Combined radium (pCi/L) -- Some people who drink water containing radium-226 or 228 in excess of the MCL over many years may have an increased risk of getting cancer.
Abbreviations: ppb – parts per billion or micrograms per liter; ppm – parts per million or milligrams per liter; ppt – parts per trillion or nanograms per liter; ppq – parts per quadrillion or picograms per liter; N/A – not applicable; N/D – none detected; pCi/L – picocuries per liter (a measure of radioactivity); umho/cm = micromhos per centimeter (a measure of conductivity); obsvns = obersvations/field at 100 Power; IDSE = Initial Distribution System Evaluation
Highest Compliance Level: The highest level of that contaminant used to determine compliance with a National Primacy Drinking Water Regulation.
Range of Detections: The lowest to the highest result value recorded during the required monitoring timeframe for systems with multiple entry points.
(NTU) Nephelometric Turbidity Unit - nephelometric turbidity unit is a measure of the clarity of water. Turbidity in excess of 5 NTU is just noticeable to the average person.
(AL) Action Level - the concentration of a contaminant, which if exceeded, triggers treatment or other requirements, which a water system must follow.
(TT) Treatment Technique - a treatment technique is a required process intended to reduce the level of a contaminant in drinking water.
(MCL) Maximum Contaminant Level - the “Maximum Allowed“ is the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible, using the best available treatment technology.
(MCLG) Maximum Contaminant Level Goal - the “Goal“ is the level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.
(MRDLG) Maximum Residual Disinfectant Level Goal - The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
(MRDL) Maximum Residual Disinfectant Level - The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
(mg/L) Milligram per liter - Or part per million; the parts of contaminant per million parts of water. Roughly equivalent to one drop for 10 gallons of water.
MCL’s are set at very stringent levels. To understand the possible health effects described for many regulated contaminants, a person would have to drink 2 liters of water every day at the MCL level for a lifetime to have a one-in-a-million chance of having the described health effect.
|
TEST RESULTS FOR NPRWD DISTRIBUTION (SYSTEM I)
|
| Contaminant |
MCLG |
MCL |
Level Detected |
Unit Measurement |
Range |
Date |
Violation Yes/No |
Source of Contaminant |
|
Inorganic Contaminants
|
| Copper # of Samples = 10 |
0 |
AL=1.3 |
0.0195 90th % |
ppm |
N/A |
08/06 |
* |
Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives |
| Lead # of Samples = 10 |
0 |
AL=15 |
1.62 90th % |
ppb |
N/A |
08/06 |
* |
Corrosion of household plumbing systems, erosion of natural deposits |
- No sites exceeded the copper or lead action level.
| Table of Detected Regulated Contaminants (Test Results for the City of Minot) |
| CONTAMINANT |
MCLG |
MCL |
LEVEL OR RANGE |
DATE TESTED |
SOURCE OF CONTAMINANT |
| INORGANIC CONTAMINANTS |
| Arsenic (ppb) |
n/a |
10 |
1.63 |
10/07 |
Erosion of natural products; runoff from orchards; runoff from glass and electronics production wastes |
| Nitrate + Nitrite (ppm) |
10 |
10 |
0.36 |
2/07 |
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits |
| RADIOACTIVE CONTAMINANTS |
| Uranium combined (ppb) |
0 |
30 |
0.316 |
7/03 |
Erosion of natural products |
| DISINFECTION BYPRODUCTS |
| Total Haloacetic Acids (ppb) |
0 |
60 |
11 8.76 to 12.06 |
6/07 |
Byproduct of drinking water chlorination |
| Total Trihalo-methanes (ppb) |
0 |
80 |
49 42.96 to 52.78 |
12/07 |
Byproduct of drinking water chlorination |
| Disinfectants |
MRDLG |
MRDL |
Unit of Measure |
Range |
Date Tested |
Likely Source of Contamination |
| Chloramine Residual |
4 |
4.0 |
ppm |
1.5 1.25 to 1.73 |
9/07 |
Water additive used to control microbes |
EPA requires monitoring of over 80 drinking water contaminants. Those contaminants listed in the tables above are the only contaminants detected in your drinking water by the City of Minot who is our contract bulk supplier of drinking water for our System I consumers and by North Prairie Rural Water District.
As you can see by the tables above the system had no major violations. We are proud that your drinking water meets or exceeds all Federal and State requirements. We have learned through monitoring and testing that some contaminants have been detected. The EPA has determined that your water IS SAFE at these levels.
Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline (1-800-426-4791).
Thank you for allowing us to provide your family with clean, quality water this year. In order to maintain a safe and dependable water supply we sometimes need to make improvements that will benefit all of our customers. These improvements sometimes require rate structure adjustments, however, we do not anticipate any at this time. North Prairie Rural Water District’s Board of Directors routinely reviews the overall condition of the District’s water system. The board determines when appropriate improvements are necessary. If you have any questions or concerns about your water system, please feel free to contact the District’s office at 701-852-1886 or Toll Free at 1-800-536-3150.
North Prairie Rural Water District works diligently to provide quality water to every tap. This report is a yearly update on the quality of water that your District (System I) provided you in 2007. We ask that all our customers help us protect our water resources, which are the heart of our community, our way of life, and our children’s future.
North Prairie Rural Water District
System II -- 2007
Water Quality Report
We are pleased to present to you this year's Water Quality Report. This report is designed to inform you about the safe clean water we deliver to you every day. Our constant goal is to provide you with a safe and dependable supply of drinking water. We want you to understand the efforts we make to continually improve the water treatment process and protect our water resources. North Prairie Rural Water District (NPRWD) (System II) purchases water from the City of Minot. Minot’s water source is the Souris River, Minot Aquifer, and the Sundre Aquifer. The Minot Aquifer basically follows the Souris River. City wells in this aquifer are located in the west part of Minot. The Sundre Aquifer comes from the north, travels under Minot, turns and goes southeast to the county line. The city’s wells in this aquifer are about five miles southeast of town where the aquifer passes under the Souris River. Traditionally, Minot used about 60% Sundre Aquifer water, 40% Minot Aquifer water in the year 2007. Minot’s water treatment plant is located beside the Souris River at 900 16th Street SW. Water treatment includes iron and manganese removal, lime softening, fluoridation and chlorination.
The City of Minot has been an active participant in the North Dakota Wellhead Protection Program. This program was set up by the North Dakota State Health Department to help preserve and protect the water quality of the Minot and Sundre Aquifers. The North Dakota Department of Health has also prepared a Source Water Assessment for the City of Minot and for North Prairie Rural Water District. Information regarding this program is available upon request.
Our public water system, in cooperation with the North Dakota Department of Health, has completed the delineation and contaminant/land use inventory elements of the North Dakota Source Water Protection Program. Based on the information from these elements, the North Dakota Department of Health has determined that our source water is moderately susceptible to potential contaminants.
If you have any questions about this report or concerning your water utility, please contact Ralph Packulak, Manager at 701-852-1886 or Toll Free at 1-800-536-3150. We want our customers to be informed about their water utility and the quality of water they supply. If you want to learn more, please attend any of our regularly scheduled board of directors meetings. They are held on the second Thursday of each month, at 7:00 a.m. in Minot, North Dakota. If you are aware of non-English speaking individuals who need help with the appropriate language translation, please call Ralph at the number listed above.
North Prairie Rural Water District would appreciate it if large volume water customers would please post copies of this Water Quality Report in conspicuous locations or distribute them to tenants, residents, patients, students, and/or employees, so individuals who consume the water, but do not receive a water bill, can learn about our water system.
North Prairie Rural Water District routinely monitors for contaminants in your drinking water according to Federal and State laws. The following tables show the results of our monitoring for the period of January 1st to December 31st, 2007. As authorized and approved by EPA, the state has reduced monitoring requirements for certain contaminants to less often than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year. Some of our data [e.g., for inorganic contaminants], though representative, is more than one year old.
Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential effects can be obtained by calling the EPA’s Safe Drinking Water Hotline (800-426-4791).
The sources of drinking water (both tap and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land, or through the ground, it dissolves naturally occurring minerals, and in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.
Contaminants That May Be Present in Source Water:
Microbial Contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
Inorganic Contaminants, such as salts and metals, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
Pesticides and Herbicides, which come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
Organic Chemical Contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
Radioactive Contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.
In order to ensure that tap water is safe to drink, the EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for public health.
In the following tables you will find many terms and abbreviations you might not be familiar with. To help you better understand these terms, we have provided the following definitions:
Uranium (pCi/L) -- Some people who drink water containing uranium in excess of the MCL over many years may have an increased risk of getting cancer and kidney toxicity.
Combined radium (pCi/L) -- Some people who drink water containing radium-226 or 228 in excess of the MCL over many years may have an increased risk of getting cancer.
Abbreviations: ppb – parts per billion or micrograms per liter; ppm – parts per million or milligrams per liter; ppt – parts per trillion or nanograms per liter; ppq – parts per quadrillion or picograms per liter; N/A – not applicable; N/D – none detected; pCi/L – picocuries per liter (a measure of radioactivity); umho/cm = micromhos per centimeter (a measure of conductivity); obsvns = obersvations/field at 100 Power; IDSE = Initial Distribution System Evaluation
Highest Compliance Level: The highest level of that contaminant used to determine compliance with a National Primacy Drinking Water Regulation.
Range of Detections: The lowest to the highest result value recorded during the required monitoring timeframe for systems with multiple entry points.
(NTU) Nephelometric Turbidity Unit - nephelometric turbidity unit is a measure of the clarity of water. Turbidity in excess of 5 NTU is just noticeable to the average person.
(AL) Action Level - the concentration of a contaminant, which if exceeded, triggers treatment or other requirements, which a water system must follow.
(TT) Treatment Technique - a treatment technique is a required process intended to reduce the level of a contaminant in drinking water.
(MCL) Maximum Contaminant Level - the “Maximum Allowed“ is the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible, using the best available treatment technology.
(MCLG) Maximum Contaminant Level Goal - the “Goal“ is the level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.
(MRDLG) Maximum Residual Disinfectant Level Goal - The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
(MRDL) Maximum Residual Disinfectant Level - The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
(mg/L) Milligram per liter - Or part per million; the parts of contaminant per million parts of water. Roughly equivalent to one drop for 10 gallons of water.
MCL’s are set at very stringent levels. To understand the possible health effects described for many regulated contaminants, a person would have to drink 2 liters of water every day at the MCL level for a lifetime to have a one-in-a-million chance of having the described health effect.
|
TEST RESULTS FOR NPRWD DISTRIBUTION (SYSTEM II)
|
| Contaminant |
MCLG |
MCL |
Level Detected |
Unit Measurement |
Range |
Date |
Violation Yes/No |
Source of Contaminant |
|
Inorganic Contaminants
|
| Copper # of Samples = 10 |
0 |
AL=1.3 |
0.0272 90th % |
ppm |
N/A |
08/06 |
* |
Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives |
| Lead # of Samples = 10 |
0 |
AL=15 |
1.34 90th % |
ppb |
N/A |
08/06 |
* |
Corrosion of household plumbing systems, erosion of natural deposits |
- No sites exceeded the copper or lead action level.
| Table of Detected Regulated Contaminants (Test Results for the City of Minot) |
| CONTAMINANT |
MCLG |
MCL |
LEVEL OR RANGE |
DATE TESTED |
SOURCE OF CONTAMINANT |
| INORGANIC CONTAMINANTS |
| Arsenic (ppb) |
n/a |
10 |
1.63 |
10/07 |
Erosion of natural products; runoff from orchards; runoff from glass and electronics production wastes |
| Nitrate + Nitrite (ppm) |
10 |
10 |
0.36 |
2/07 |
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits |
| RADIOACTIVE CONTAMINANTS |
| Uranium combined (ppb) |
0 |
30 |
0.316 |
7/03 |
Erosion of natural products |
| DISINFECTION BYPRODUCTS |
| Total Haloacetic Acids (ppb) |
0 |
60 |
11 8.76 to 12.06 |
6/07 |
Byproduct of drinking water chlorination |
| Total Trihalo-methanes (ppb) |
0 |
80 |
49 42.96 to 52.78 |
12/07 |
Byproduct of drinking water chlorination |
| Disinfectants |
MRDLG |
MRDL |
Unit of Measure |
Range |
Date Tested |
Likely Source of Contamination |
| Chloramine Residual |
4 |
4.0 |
ppm |
1.5 1.25 to 1.73 |
9/07 |
Water additive used to control microbes |
EPA requires monitoring of over 80 drinking water contaminants. Those contaminants listed in the tables above are the only contaminants detected in your drinking water by the City of Minot who is our contract bulk supplier of drinking water for our System II consumers and by North Prairie Rural Water District.
As you can see by the tables above the system had no major violations. We are proud that your drinking water meets or exceeds all Federal and State requirements. We have learned through monitoring and testing that some contaminants have been detected. The EPA has determined that your water IS SAFE at these levels.
Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline (1-800-426-4791).
Thank you for allowing us to provide your family with clean, quality water this year. In order to maintain a safe and dependable water supply we sometimes need to make improvements that will benefit all of our customers. These improvements sometimes require rate structure adjustments, however, we do not anticipate any at this time. North Prairie Rural Water District’s Board of Directors routinely reviews the overall condition of the District’s water system. The board determines when appropriate improvements are necessary. If you have any questions or concerns about your water system, please feel free to contact the District’s office at 701-852-1886 or Toll Free at 1-800-536-3150.
North Prairie Rural Water District works diligently to provide quality water to every tap. This report is a yearly update on the quality of water that your District (System II) provided you in 2007. We ask that all our customers help us protect our water resources, which are the heart of our community, our way of life, and our children’s future.
North Prairie Rural Water District
System III -- 2007
Water Quality Report
We are pleased to present to you this year's Water Quality Report. This report is designed to inform you about the safe clean water we deliver to you every day. Our constant goal is to provide you with a safe and dependable supply of drinking water. We want you to understand the efforts we make to continually improve the water treatment process and protect our water resources. North Prairie Rural Water District (NPRWD) (System III) water source is the Voltaire Aquifer. We have two wells located east of Velva, North Dakota. One well is 106 feet deep, while the second well has a depth of 110 feet. Each well has a pumping rate of 265 gallons per minute. Water Treatment includes pre-chlorination at the wellhead, with the addition of potassium permanganate and forced aeration for iron and manganese removal. The process is completed with chlorination after treatment.
North Prairie Rural Water District (NPRWD) (System III) is actively involved in North Dakota’s Wellhead Protection Program. The district’s Wellhead Protection Plans include a Wellhead Protection Area (delineated management zone), an overview of the district’s possible groundwater contaminant sources, some management options that could be considered by the district for protecting our water source, and an outline of the emergency actions the district would implement in the event we lose our well field to some problem. Copies of NPRWD’s Wellhead Protection Plans are available from Ralph Packulak, Manager, at the district’s office in Minot. The North Dakota Department of Health has prepared a Source Water Assessment for NPRWD (System III). Information regarding this program is available upon request.
Our public water system, in cooperation with the North Dakota Department of Health, has completed the delineation and contaminant/land use inventory elements of the North Dakota Source Water Protection Program. Based on the information from these elements, the North Dakota Department of Health has determined that our source water is moderately susceptible to potential contaminants.
If you have any questions about this report or concerning your water utility, please contact Ralph Packulak, Manager at 701-852-1886 or Toll Free at 1-800-536-3150. We want our customers to be informed about their water utility and the quality of water they supply. If you want to learn more, please attend any of our regularly scheduled board of directors meetings. They are held on the second Thursday of each month, at 7:00 a.m. in Minot, North Dakota. If you are aware of non-English speaking individuals who need help with the appropriate language translation, please call Ralph at the number listed above.
North Prairie Rural Water District would appreciate it if large volume water customers would please post copies of this Water Quality Report in conspicuous locations or distribute them to tenants, residents, patients, students, and/or employees, so individuals who consume the water, but do not receive a water bill, can learn about our water system.
North Prairie Rural Water District routinely monitors for contaminants in your drinking water according to Federal and State laws. The following tables show the results of our monitoring for the period of January 1st to December 31st, 2007. As authorized and approved by EPA, the state has reduced monitoring requirements for certain contaminants to less often than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year. Some of our data [e.g., for inorganic contaminants], though representative, is more than one year old.
Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential effects can be obtained by calling the EPA’s Safe Drinking Water Hotline (800-426-4791).
The sources of drinking water (both tap and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land, or through the ground, it dissolves naturally occurring minerals, and in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.
Contaminants That May Be Present in Source Water:
Microbial Contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
Inorganic Contaminants, such as salts and metals, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
Pesticides and Herbicides, which come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
Organic Chemical Contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
Radioactive Contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.
In order to ensure that tap water is safe to drink, the EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for public health.
In the following tables you will find many terms and abbreviations you might not be familiar with. To help you better understand these terms, we have provided the following definitions:
Uranium (pCi/L) -- Some people who drink water containing uranium in excess of the MCL over many years may have an increased risk of getting cancer and kidney toxicity.
Combined radium (pCi/L) -- Some people who drink water containing radium-226 or 228 in excess of the MCL over many years may have an increased risk of getting cancer.
Abbreviations: ppb – parts per billion or micrograms per liter; ppm – parts per million or milligrams per liter; ppt – parts per trillion or nanograms per liter; ppq – parts per quadrillion or picograms per liter; N/A – not applicable; N/D – none detected; pCi/L – picocuries per liter (a measure of radioactivity); umho/cm = micromhos per centimeter (a measure of conductivity); obsvns = obersvations/field at 100 Power; IDSE = Initial Distribution System Evaluation
(AL) Action Level - the concentration of a contaminant, which if exceeded, triggers treatment or other requirements, which a water system must follow.
(TT) Treatment Technique - a treatment technique is a required process intended to reduce the level of a contaminant in drinking water.
(NTU) Nephelometric Turbidity Unit - nephelometric turbidity unit is a measure of the clarity of water. Turbidity in excess of 5 NTU is just noticeable to the average person.
(MCL) Maximum Contaminant Level - the “Maximum Allowed“ is the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible, using the best available treatment technology.
(MCLG) Maximum Contaminant Level Goal - the “Goal“ is the level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.
(MRDLG) Maximum Residual Disinfectant Level Goal - The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
(MRDL) Maximum Residual Disinfectant Level - The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Highest Compliance Level: The highest level of that contaminant used to determine compliance with a National Primacy Drinking Water Regulation.
Range of Detections: The lowest to the highest result value recorded during the required monitoring timeframe for systems with multiple entry points.
MCL’s are set at very stringent levels. To understand the possible health effects described for many regulated contaminants, a person would have to drink 2 liters of water every day at the MCL level for a lifetime to have a one-in-a-million chance of having the described health effect.
| TEST RESULTS FOR NPRWD DISTRIBUTION (SYSTEM III) |
| Contaminant |
MCLG |
MCL |
Level Detected |
Unit Measurement |
Range |
Date (year) |
Violation Yes/No |
Source of Contaminant |
| Microbiological Contaminants |
| Copper # of Samples = 10 |
0 |
AL=1.3 |
0.57390th % |
ppm |
N/A |
08/06 |
* |
Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives |
| Lead # of Samples = 10 |
0 |
AL=15 |
5.2590th % |
ppb |
N/A |
08/06 |
* |
Corrosion of household plumbing systems, erosion of natural deposits |
- No sites exceeded the copper or lead action level.
| Radioactive Contaminants |
MCLG |
MCL |
Highest Compliance Level |
Unit of Measure |
Range |
Date (year) |
Violation Yes/No |
Likely Source of Contamination |
| Uranium, Combined |
N/A |
30 |
0.499 |
ppb |
N/A |
8/03 |
No |
Erosion of natural deposits |
| Radium, (226,228) Combined |
N/A |
5 |
1.24 |
pCi/l |
N/A |
8/03 |
No |
Erosion of natural deposits |
EPA requires monitoring of over 80 drinking water contaminants. Those contaminants listed in the tables above are the only contaminants detected in your drinking water.
| Disinfection Byproducts |
MCLG |
MCL |
Highest Compliance Level |
Unit of Measure |
Range |
Date (year) |
Violation Yes/No |
Likely Source of Contamination |
| Total Trihalo-Methanes(TTHM) |
N/A |
80 |
N/A |
ppb |
ND to 0 |
7/07 |
No |
By-product of drinking water chlorination |
| HAA5 |
N/A |
60 |
N/A |
ppb |
ND to 0 |
7/07 |
|
By-product of drinking water disinfection |
| Disinfectants |
MRDL |
MRDL |
Highest Compliance Level |
Unit of Measure |
Range |
Date (year) |
Violation Yes/No |
Likely Source of Contamination |
| Chlorine |
4.0 |
4.0 |
1.2 |
ppm |
.33 to 1.64 |
10/07 |
No |
Water additive used to control microbes |
| Total Organic Carbon Removal |
Date |
High Comp. |
Units |
Range |
| Alkalinity, Total |
5/07 |
304 |
ppm |
N/A |
| Unregulated Contaminants |
Date |
High Comp. |
Units |
Range |
| Bicarbonate As HCO3 |
5/07 |
371 |
ppm |
N/A |
| Calcium |
5/07 |
118 |
ppm |
N/A |
| Chloride |
5/07 |
14.7 |
ppm |
N/A |
| Hardness, Total (As CACO3) |
5/07 |
470 |
ppm |
N/A |
| Iron |
5/07 |
0.097 |
ppm |
N/A |
| Magnesium |
5/07 |
42.5 |
ppm |
N/A |
| Manganese |
5/07 |
0.09 |
ppm |
N/A |
| Nickel |
5/07 |
0.00642 |
ppm |
N/A |
| PH |
5/07 |
7.98 |
PH |
N/A |
| Potassium |
5/07 |
9.7 |
ppm |
N/A |
| Sodium |
5/07 |
141 |
ppm |
N/A |
| Sodium Adsorption Ratio |
5/07 |
2.83 |
obsvns |
N/A |
| Sulfate |
5/07 |
455 |
ppm |
N/A |
| TDS |
5/07 |
966 |
ppm |
N/A |
| Zinc |
5/07 |
0.0128 |
ppm |
N/A |
Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline (1-800-426-4791).
Thank you for allowing us to provide your family with clean, quality water this year. In order to maintain a safe and dependable water supply we sometimes need to make improvements that will benefit all of our customers. These improvements sometimes require rate structure adjustments, however, we do not anticipate any at this time. North Prairie Rural Water District’s Board of Directors routinely reviews the overall condition of the District’s water system. The board determines when appropriate improvements are necessary. If you have any questions or concerns about your water system, please feel free to contact the District’s office at 701-852-1886 or Toll Free at 1-800-536-3150.
North Prairie Rural Water District works diligently to provide quality water to every tap. This report is a yearly update on the quality of water that your District (System III) provided you in 2007. We ask that all our customers help us protect our water resources, which are the heart of our community, our way of life, and our children’s future.