Annual Water Quality Report   


Water Testing Performed in Calendar Year 2005




IS MY WATER SAFE?   Water quality is the most important part of our job.   Our employees and water treatment specialists conduct and supervise ninety to a hundred tests on water samples each year.  We are proud to be able to say that last year your tap water met all U.S. Environmental Protection Agency (EPA) and state drinking water health standards.   Our groundwater supplies are generally clean, so we don’t have to worry as much as many other communities about how to treat our water supplies.   We are continually observant of past, present and future land uses in and around our area and we implement all reasonable measures to vigilantly safeguard our water supplies.

     This report is a snapshot of last year’s water quality.   It includes details about where your water comes from, what it contains and how it compares to the standards set by the regulatory agencies.   We are providing this information because informed customers are our best allies.   Please take a few minutes to look at the information; we think you will find a lot of reasons to feel good about the quality of your water, and about using it with confidence.


WHERE DOES MY WATER COME FROM?   CHCID has two wells, well #5 is located on Power Road South of Riggs Rd. and well #6 is located on Riggs Rd. east of Valencia .   The wells are drilled in excess of 1000 feet.   The water table runs from 260 to 300 feet below the surface and we are currently pumping from 560-600 feet.

     The system consists of two source wells, a 350,000 and 100,000 gallon water storage tanks, a hydro-pneumatic pressure tank, booster pump station, distribution system and a chlorination system.   Chlorination is accomplished by using a 2-4% liquid solution and maintaining the level of chlorine at 0.5-1.0 ppm.   The pressure in the system is maintained at a constant 60 psi.   The distribution system is a series of looped lines providing water.   A looped system insures that the maximum volume of water is available in case of fire or emergency.  



How Will I Know If There Is A Problem With My Water?


We will let you know of any problems that could affect your health or the health of your family.   We are well prepared to alert consumers if a neighborhood water-quality problem occurs.   We will use written notices, telephones, and enlist the help of television, radio, and local newspapers to advise consumers promptly of any water-quality problems.   Maintaining the highest drinking water standards while protecting you and your family are our top priorities.






Naturally Occurring Bacteria


The simple fact is, bacteria and other microorganisms inhabit our world.   They can be found all around us: in our bodies; and, in the air, soil and water.   Some are harmful to us and some are not.   Coliform bacteria are common in the environment and are generally not harmful themselves.   The presence of this bacterial form in drinking water is a concern because it indicates that the water may be contaminated with other organisms that cause disease.   Throughout the year, we tested fifty-four samples (at least 4 samples each month) for coliform bacteria.   In that time, none of the samples came back positive for the bacteria. Federal regulations now require that public water testing positive for coliform bacteria must be further analyzed for fecal coliform bacteria.   Fecal coliform are present only in human and animal waste.   Because these bacteria can cause illness; it is unacceptable for fecal coliform to be present in water at any concentration.   Our tests indicate no fecal coliform is present in our water.

IMPROVEMENTS DURING 2005 - OUR CONTINUING COMMITMENT:  We developed valve identification, tagging and mapping program of our system to improve the ability to isolate and work on small pieces of the system.  This minimizes the numbers of customers without water should a line break occur.   To maintain the efficient, productive system, we continue to update lines and install fire hydrants. Installation of these fire hydrants can cut the cost of your homeowners insurance.   Both storage tanks were sandblasted and their interiors re-coated.    A third pump was added to the booster station and a new tablet feed chlorination system installed.   The chlorine solution fed from this system is more evenly distributed, dissipates slower and provides a longer lasting well balanced residual.  


DO I NEED TO TAKE SPECIAL PRECAUTIONS?   Some people may be more vulnerable to contaminants in drinking water than the general population.   Immuno-compromised persons, such as a person with cancer under going chemotherapy or undergone organ transplants, HIV/AIDS and other immune system disorders, some elderly and infants may be particularly at risk from infections.   These people should seek advice about drinking water from their health care providers.   The U.S. EPA and CDC (Center for Disease Control) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial containments are available from the Safe Drinking Water Hotline at (800) 426-4791.


 Substances that might be in Drinking Water:


To ensure that tap water is safe to drink, the United States Environmental Protection Agency prescribes regulations that limit the amount of certain contaminants in water provided by public water systems.   The United States Food and Drug Administration regulations establish limits for contaminants in bottled water.   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 in tap water and potential health effects can be obtained by called the EPA’s safe drinking water hotline 800-426-4719.   Information on bottled water can be obtained from the United States Food and Drug Administration.  


New Arsenic Regulation:

    In January 2001, the U.S. Environmental Protection Agency lowered the Maximum Contaminant (MCL) Level from 50 to 10 parts per billion (ppb) in response to new and compelling research linking high arsenic levels in drinking water to certain forms of cancer.   All water utilities are required to implement this new MCL starting in 2006.

    Removing arsenic from drinking water is a costly procedure, but well worth the expenditure considering the health benefits.   For a complete discussion visit the U.S. EPA’s arsenic web site at

    The source wells CHCID are using are below the new 10 ppb MCL.   While your drinking water meets EPA’s standard for arsenic, it does contain low levels of arsenic.  


Results of Radon Monitoring:

    Radon is a radioactive gas that you cannot see, taste, or smell.   It is found throughout the U.S. in the earth’s crust, in rocks and soil.   Radon can move up through the ground and into a home through cracks and holes in the foundation.   Radon can build up to high levels in all types of homes.   Radon can also get into indoor air when released from tap water during routine household activities such as showering or washing dishes.

    Compared to Radon entering the home through the soil, Radon entering a home through tap water will, in most cases, be a small source of Radon in indoor air.

    Radon is a known human carcinogen.   Breathing air containing Radon can lead to lung cancer.   Drinking water containing Radon may also cause increased risk of stomach cancer.

    If you are concerned about Radon in your home, test the air quality.   Testing is inexpensive and easy.   If the level of Radon in your air is 4 Pico curies per liter of air (pCi/L) or higher, you should take steps to lower the Radon.   There are simple ways to do this that are not too costly.   For additional information, call your state Radon program or call EPA’s Radon Hotline 800-SOS-RADON.



    Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six months of age.   High nitrate levels in drinking water can cause blue baby syndrome.   Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity.   If you are caring for an infant, you should ask for advice from your health care provider.   Both CHCID wells are under 10 ppm.

    Every year, the U.S. EPA requires that water providers notify customers about the quality of the water we provide to our customers.   We look forward to this opportunity to notify you of our progress in improving the water we supply to you and how our water exceeds health and safety standards.   The table in this report lists only the controlled contaminants detected.



      CHCIDworks to ensure water quality by performing numerous tests throughout the year.  The major tests fall under the following categories:

Most of these constituents are measured in parts per million or parts per billion; an indication of how exact we have to be when talking about water quality.   If you would like more information about CHCID’s water quality, or operations in general, please call us at 480-988-2731.


Water Quality Data Table


The table below lists all the controlled drinking water contaminants that were detected during the calendar year of this report.   The presence of contaminants in the water does not necessarily indicate that water poses a health risk and unless otherwise noted, the data presented in this table is from the testing done in the calendar year of the report.



highest level

allowed (MCL)





major sources of contaminants


10 ppm

3.11 - 4.02 ppm


Runoff from septic tanks, sewage, natural deposit erosion


10 ppb

5.0 - 6.0  ppb


Mining, naturally occurring


15 ppb


2 - 9 ppb


Leaching from copper & lead pipes and household plumbing reacting with water.



1.3 ppm

0.01-.10 ppm


Leaching from copper & lead pipes and household plumbing reacting with water.


MCL: Maximum Contaminant Level: The highest level of a contaminant that is allowed in drinking water.

ppm: Parts per million, or milligrams per liter (mg/l)

ppb: Parts per billion, or micrograms per liter (ug/l)

1 mg/l: Parts per million







Is It Safe To Drink From A Garden Hose?


No.   Substances used in vinyl garden hoses to keep them flexible can get into the water as it passes through the hose.   These chemicals are not good for you nor are they good for your pets.   Allow the water to run for a short time in order to flush the hose before drinking or filling your pet’s drinking containers.   There are hoses made with ‘food-grade’ plastic that will not contaminate the water.   Check with local hardware stores for this type of hose.

                P.O. Box 9038

                   Chandler Heights , AZ   85227


              Office 480-988-2731

              Fax 480-988-4015


                  Jerry Beeler Operator

                    Nancy Lopez Office Manager