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  1998 Water Quality Report

The North Liberty Water Department is proud to provide a safe, good-tasting supply of water. This 1998 water quality report is intended to let our customers know what is in their drinking water. We want our customers to be informed about their drinking water. If you have questions about North Liberty's drinking water or this report, please call the Water Plant at 626-5719.

The City of North Liberty is our governing body. City Council meetings are held the second and fourth Tuesdays of each month. The Council chambers are located at 25 W. Cherry Street. Your input is welcome.

If you have questions about your water bill or water and sewer rates, contact the Billing Department at 626-5700

1998 Annual Quality Report
We are pleased to present to you this year's 1998 Annual Quality Report. This report is designed to inform you about the quality water and services we deliver to you everyday. 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. We are committed to ensuring the quality of your water. Our water source is the Silurian and the Jordan aquifers. The City of North Liberty has a total of five (5) wells to draw from. Four wells draw from the Silurian aquifer and the other draws from the Jordan aquifer. North Liberty will be adding another well in the Jordan aquifer in 2000.

I am pleased to report that our drinking water is safe and meets Federal and State requirements.

If you have any questions about this report or concerning your water utility, please contact Mike Keating, North Liberty 'Water Superintendent. We want our customers to be informed about their water utility. If you want to learn more, please contact the North Liberty Water Department at 626-5719.

The North Liberty Water Department routinely monitors for contaminants in your drinking water according to Federal and State laws. This table shows the results of our monitoring for the period of January 1 to December 31" 1998. All drinking water, including bottled drinking water, may be reasonably expected to contain at least small amounts of some contaminants. It's important to remember that the presence of these contaminants does not necessarily pose a health risk.

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:

Non-Detects (ND)- laboratory analysis indicates that, the constituent is not present.

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.

Action Level - the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

PCi/L - picoluries per liter (a measure of radiation)

Maximum Contaminant Level - The "Maximum Allowed" (MCL) is the highest level of a contaminant that is allowed in the 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.

Contaminants Violation Level Detect Unit Measurement MCLG MCL Source of Contamination
Y/N
Inorganic Contaminates
Fluoride (ppm) N 1.0 4 4 Erosion of natural deposits
Nitrate (ppm) N 0.14 10 10 Runoff from fertilizer use
Sodium (ppm) N 100 na na Erosion of natural deposits
Sulfate (ppm) N 470 na na Erosion of natural deposits
Copper (ppm) N 1.0 1.3 1.3 corrosion of plumbing system
Radionuclides
Combined Radium (pCi/L) N 4.4 5 5 Erosion of natural deposits
Gross Alpha (pCi/L) N 10.6 15 15 Erosion of natural deposits

What does this mean?

We had no violations detected in 1998. We continue to monitor for various constituents in the water supply to meet all regulatory requirements.

All 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 the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency's safe Drinking Water Hotline at 1-800·426-4791.

In our continuing efforts to maintain a safe and dependable water supply it may be necessary to make improvements in your water system. The cost of these improvements may be reflected in the rate structure. Rate adjustments may be necessary in order to address these improvements.

Some people may be more vulnerable to contaminants in drinking water than the general population. Immune-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 the advice about drinking 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 (800-426-4791)

Please call our office if you have any questions.

The North Liberty Water Department will continue to provide top quality water to every tap. We ask that all our customers help protect our water sources, which are the heart of our community, our way of life and our children's future. If you have any questions, comments or suggestions please contact the North Liberty Water Department.