Community Water System routinely monitor for constituents in your drinking water according to Federal and State laws. This table shows the results of our monitoring for the period of January 1 st to December 31 st , 2003 . In this table you will find many terms and abbreviations you might not be familiar with. To help you better understand these terms we've provided the following definitions:
Parts per million (ppm) or Milligrams per liter (mg/l) - One part per million corresponds to one minute in two years or a single penny in $10,000.
Parts per billion (ppb) or Micrograms per liter - One part per billion corresponds to one minute in 2,000 years, or a single penny in $10,000,000.
Action Level - the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
Maximum Contaminant Level - The "Maximum Allowed" (MCL) 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.
Maximum Contaminant Level Goal - The "Goal"(MCLG) 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.
Nephelometric Turbidity Unit (NTU) - Nephelometric turbidity unit is a measure of the clarity of water. Turbidity in excess of 5 NTU is just noticeable to the average person.
Treatment Technique (TT) - A treatment technique is a required process intended to reduce the level of a contaminant in drinking water.
Maximum Residual Disinfectant Level (MRDL) - 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.
Maximum Residual Disinfectant Level Goal (MRDLG) - 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.
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TEST RESULTS | ||||||||||||
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MICROBIOLOGICAL CONTAMINANTS | ||||||||||||
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Contaminant |
Violation Y/N |
Level Detected |
Unit of Measurement |
MCLG |
MCL |
Major Sources in Drinking Water | ||||||
| Total Coliform Bacteria |
Y |
3 |
Present |
0 |
> 1 positive monthly sample |
Naturally present in the environment | ||||||
| • Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially harmful, bacteria may be present. Coliforms were found in more samples than allowed and this was a warning of potential problems. | ||||||||||||
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Fecal coliform & Escherichia coli |
N |
1 |
Present |
0 |
a routine sample and repeat sample are total coliform positive, and one is also fecal coliform or E. coli positive | Human and animal fecal waste | ||||||
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Turbidity |
N |
Highest yearly sample result: 0.24 |
NTU |
NA |
> .3NTU in > 5% of samples or any 1 sample > 1 NTU |
Soil runoff | ||||||
| Lowest monthly % of samples meeting the turbidity limit: 100% | ||||||||||||
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• Turbidity is a measure of the cloudiness of the water. We monitor it because it is a good indicator of the effectiveness of our filtration system | ||||||||||||
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INORGANIC CONTAMINANTS | ||||||||||||
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Contaminant |
Violation Y/N |
Level Detected |
Unit of Measurement |
MCLG |
MCL |
Major Sources in Drinking Water | ||||||
|
Nitrate [as Nitrogen] |
N |
0.21 |
ppm |
10 |
10 |
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits | ||||||
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LEAD AND COPPER TAP MONITORING | ||||||||||||
| Contaminant | Number of Sites Over Action Level |
90 th Percentile Result |
95 th Percentile Result |
Unit of Measurement |
Action Level |
Major Sources in Drinking Water | ||||||
| Lead | 3 | 0.006 | 0.018 | mg/L | 0.015 | Corrosion from household plumbing systems; erosion of natural deposits | ||||||
| Copper | 0 | 0.2 | 0.2 | mg/L | 1.3 | |||||||
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• Community Water System is on a reduced monitoring schedule and required to sample once per year for lead and copper at the customers' taps. Our last monitoring period was in 2003. Our next required monitoring period is the year 2004. • Infants and children who drink water containing lead in excess of the action level could experience delays in their physical or mental development. Children could show slight deficits in attention span and learning abilities. Adults who drink this water over many years could develop kidney problems or high blood pressure • Infants and young children are typically more vulnerable to lead in drinking water than the general population. It is possible that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home’s plumbing. If you are concerned about elevated lead levels in your home’s water, you may wish to have your water tested and flush your tap for 30 seconds to 2 minutes before using tap water. Additional information is available from the Safe Drinking Water Hotline (1-800-426-4791). | ||||||||||||
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DISINFECTION BY-PROCUCT PRECURSORS | ||||||||||||||
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• The percentage of Total Organic Carbon (TOC) removal was routinely monitored in 2004, and our water system met all TOC removal requirements set by USEPA. Total organic carbon (TOC) has no health effects. However, total organic carbon provides a medium for the formation of disinfection by-products. These by-products include trihalomethanes (THMs) and haloacetic acids (HAAs). | ||||||||||||||
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REGULATED DISINFECTANTS | ||||||||||||||
|
Disinfectant |
Violation Y/N |
Level
Detected |
Unit of Measurement |
MRDLG |
MRDL |
Major Sources in Drinking Water | ||||||||
|
Not applicable for wholesaler
|
ppm |
4 |
4 |
Water additive used to control microbes | ||||||||||
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VOLATILE ORGANIC CONTAMINANTS | ||||||||||||||
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Contaminant |
Violation Y/N |
Level Detected |
Unit of Measurement |
MCLG |
MCL |
Major Sources in Drinking Water | ||||||||
|
HAA5 [Haloacetic Acids] |
N |
Highest running annual average: 40.4 |
ppb |
0 |
60 |
By-products of drinking water disinfection | ||||||||
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TTHM [Total trihalomethanes] |
N |
Highest running annual average: 39.1 Range: 17- 54.7 |
ppb |
NA |
80 | |||||||||
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UNREGULATED CONTAMINANTS | ||||||||||||||
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Contaminant |
Level Detected |
Unit of Measurement |
MCLG |
Major Sources in Drinking Water | ||||||||||
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Chloroform |
9.57 |
ppb |
N/A |
By-products of drinking water disinfection | ||||||||||
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Bromodichloromethane |
1.79 |
ppb |
0 | |||||||||||
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• Unregulated contaminants are those for which EPA has not established drinking water standards. The purpose of unregulated contaminant monitoring is to assist EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is warranted. MCLs (Maximum Contaminant Levels) and MCLGs (Maximum Contaminant Level Goals) have not been established for all unregulated contaminants. | ||||||||||||||
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VIOLATIONS | ||||||||||||||
| Type | From | To | Corrective Action | |||||||||||
| Exceeded the Maximum Contaminant Level (MCL) for coliform bacteria | 5/1/04 | 5/31/04 | Adjusted the level of disinfectant and submitted the appropriate number of valid bacteriological samples to the Arkansas Department of Health | |||||||||||
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