Some homes in this community have elevated lead levels in their drinking water. Billings sent in January included a notice regarding how you can check for lead in your home. If you overlooked the notice or would like additional information, copies are available at the Water Company office or below.


January 2019
Este informe contiene información muy importante sobre su agua potable. Por favor hable con alguien que lo pueda tradúcir.


The California Department of Health Services (DHS), the U.S. Environmental Protection Agency, and Green Valley Mutual Water Company are concerned about lead in your drinking water. Although most homes have very low levels of lead in their drinking water, some homes in the community have lead levels above the state and federal action level of 15 parts per billion (ppb), or

0.015 milligrams of lead per liter of water (mg/L). Under state and federal law we are required to have a program in place to minimize lead in your drinking water by the end of a corrosion control study. This program includes corrosion control treatment, source water treatment, and public education. If you have any questions about how we are carrying out the requirements of the lead regulation please give us a call at (909) 867-2912. This brochure explains the simple steps you can take to protect you and your family by reducing your exposure to lead in drinking water.


Lead is a common metal found throughout the environment in lead-based paint, air, soil, household dust, food, certain types of pottery porcelain and pewter, and water. Lead can pose a significant risk to your health if too much of it enters your body. Lead builds up in the body over many years and can cause damage to the brain, red blood cells and kidneys. The greatest risk is to young children and pregnant women. Amounts of lead that won't hurt adults can slow down normal mental and physical development of growing bodies. In addition, a child at play often comes into contact with sources of lead contamination -- like dirt and dust -- that rarely affect an adult. It is important to wash children's hands and toys often, and to try to make sure they only put food in their mouths.


1. Lead in drinking water, although rarely the sole cause of lead poisoning, can significantly increase a person's total lead exposure, particularly the exposure of infants who drink baby formulas and concentrated juices that are mixed with water. The U.S. Environmental Protection Agency estimates that drinking water can make up 20 percent or more of a person's total exposure to lead.

2. Lead is unusual among drinking water contaminants in that it seldom occurs naturally in water supplies like rivers and lakes. Lead enters drinking water primarily as a result of the corrosion, or wearing away of materials containing lead in household

plumbing. These materials include lead-based solder used to join copper pipe, brass and chrome plated brass faucets. In 1986, Congress banned the use of lead solder containing greater than 0.2% lead, and restricted the lead content of faucets, pipes and other plumbing materials to 8.0%. In California, a similar law prohibiting the use of both lead solder and lead pipe was enacted in 1985.

3. When water stands in lead pipes or plumbing systems containing lead for several hours or more, the lead may dissolve into your drinking water. This means the first water drawn from the tap in the morning, or later in the afternoon after returning from work or school, can contain fairly high levels of lead.


1. Despite our best efforts mentioned earlier to control water corrosivity and remove lead from the water supply, lead levels in some homes or buildings can be high. To find out whether you need to take action in your own home, have your drinking water tested to determine if it contains excessive concentrations of lead. Testing the water is essential because you cannot see, taste, or smell lead in drinking water. Some local laboratories that can provide this service are listed at the end of this booklet. For more information on having your water tested, please call (909) 867-2912.

2. If a water test indicates that the drinking water drawn from a tap in your home contains lead above 15 ppb, then you should take the following precautions:

    A. Let the water run from the tap before using it for drinking or cooking any time the water in a faucet has gone unused for more than six hours.

        The longer water resides in your home's plumbing the more lead it may contain. Flushing the tap means running the cold water faucet until the

        water gets noticeably colder, usually about 15 to 30 seconds before drinking. Although toilet flushing or showering flushes water through a portion

        of your home's plumbing system, you still need to flush the water in each faucet before using it for drinking or cooking. Flushing tap water is a simple

        and inexpensive measure you can take to protect your family's health. It usually uses less than one or two gallons of water and costs less than 32

        cents per month. To conserve water, fill a couple of bottles for drinking water after flushing the tap, and whenever possible use the first flush water

         to wash the dishes or water the plants. If you live in a high-rise building, letting the water flow before using it may not work to lessen your risk from

         lead. The plumbing systems have more, and sometimes larger pipes than smaller buildings. Ask your landlord for help in locating the source of the

         lead and for advice on reducing the lead level.

   B. Try not to cook with, or drink water from the hot water tap. Hot water can dissolve more lead more quickly than cold water. If you need hot water,

        draw water from the cold tap and heat it on the stove.

   C. Remove loose lead solder and debris from the plumbing materials installed in newly constructed homes, or homes in which the plumbing has

        recently been replaced, by removing the faucet strainers from all taps and running the water from 3 to 5 minutes. Thereafter, periodically remove the

        strainers and flush out any debris that has accumulated over time.

   D. If your copper pipes are joined with lead solder that has been installed illegally since it was banned in 1986, notify the plumber who did the work and

        request that he or she replace the lead solder with lead-free solder. Lead solder looks dull gray, and when scratched with a key looks shiny. In

        addition, notify the California Department of Health Services and your local environmental health department about the violation.

   E. Determine whether or not the service line that connects your home or apartment to the water meter is made of lead. The best way to determine if

       your service line is made of lead is by either hiring a licensed plumber to inspect the line or by contacting the plumbing contractor who installed the

       line. You can identify the plumbing contractor by checking the record of building permits which should be maintained in the files of the San

       Bernardino Building & Safety. A licensed plumber can at the same time check to see if your home's plumbing contains lead solder, lead pipes, or pipe

       fittings that contain lead. The public water system that delivers water to your home should also maintain records of the materials located in the

       distribution system. Green Valley Mutual Water Company does not have any lead service lines, however, If the service line that connects your dwelling

       to the water meter contributes more than 15 ppb to drinking water, after our comprehensive treatment program is in place, we are required to

       provide the owner of the privately-owned portion of the service line with information on how to replace the privately-owned portion of the service

       line, and offer to replace that portion of the line at the owner’s expense. Acceptable replacement alternatives include copper, stainless steel, and

       plastic pipes. Partial replacement should avoid the creation of mixed piping systems and include the installation of approved dielectric couplings at all

       dissimilar metal interfaces.

   F. Have an electrician check your wiring. If grounding wires from the electrical system are attached to your pipes, corrosion may be greater. Check with

       a licensed electrician or your local electrical code to determine if your wiring can be grounded elsewhere. DO NOT attempt to change the wiring

       yourself because improper grounding can cause electrical shock and fire hazards.

3. The steps described above will reduce the lead concentrations in your drinking water. However, if a water test indicates that the drinking water coming from your tap contains lead concentrations in excess of 15 ppb after flushing, or after we have completed our actions to minimize lead levels, then you may want to take the following additional measures:

   A. Purchase or lease a home treatment device. Home treatment devices are limited in that each unit treats only the water that flows from the faucet to

       which it is connected, and all of the devices require periodic maintenance and replacement. Devices such as reverse osmosis systems or distillers can

       effectively remove lead from your drinking water. Since these treatments remove dissolved minerals, water treated by these devices will have a

       greater tendency to leach lead from brass faucets or fittings which the water contacts after treatment. Some activated carbon filters may reduce lead

       levels at the tap, however all lead reduction claims should be investigated. Be sure to check the actual performance of a specific home treatment

       device before and after installing the unit. The California Department of Health Services certifies the effectiveness of home treatment devices. Only

       devices certified by the California Department of Health Services to remove lead should be used for this purpose.

   B. Purchase bottled water for drinking and cooking.


4. You can consult a variety of sources for additional information. Your family doctor or pediatrician can perform a blood test for lead and provide you with information about the health effects of lead. State and local government agencies that can be contacted include:

   A. Green Valley Mutual Water Company at (909) 867-2912 can provide you with information about your community's water supply, and a list of local

       laboratories that have been certified by the California Department of Health Services for testing water quality;

   B. San Bernardino Building & Safety at (909) 387-8311 can provide you with information about building permit records that should contain the names of        plumbing contractors that plumbed your home; and

   C. California Department of Health Services, Childhood Lead Poisoning Prevention Branch at (916) 558-1784 or the County of San Bernardino

       Department of Public Health at (800) 722-4777 can provide you with information about the health effects of lead and how you can have your child's

       blood tested.

5. The following is a list of some state approved laboratories in your area that you can call to have your water tested for lead. Clinical Laboratory of San Bernardino (909) 825-7693 and Babcock Laboratories (951) 653-3351.

   A. Why should everyone want to know the facts about lead and drinking water? Because unhealthy amounts of lead can enter drinking water through

       the plumbing in your home. That's why I urge you to do what I did. I had my water tested for $20. You can contact the Green Valley Mutual Water

       Company for information on testing and on simple ways to reduce your exposure to lead in drinking water.

B. To have your water tested for lead, or to get more information about this public health concern, please call (909) 867-2912.

Green Valley Mutual Water Company

33274 Green Valley Lake Road

P.O. Box 8300

Green Valley Lake, CA  92341

Telephone: (909) 867-2912   Fax: (909) 867-9603

© 2019 by Green Valley Mutual Water Company - All Rights Reserved