General Information
The District is proud to declare that its water surpasses even the most stringent state and federal water quality regulations. Your drinking water has passed rigorous sampling and testing procedures before it reaches your tap. Most of the water you receive originates in the Colorado River and is treated extensively by Metropolitan Water District (MWD). In addition to MWD’s testing, the District also conducts its own water sampling to ensure the quality of your water.
In fact, this year alone, the District had a certified lab run over 17,000 analyses in addition to the already thorough testing conducted by MWD before even a drop of water reaches your home or business.
Testing & Measuring Water Quality
Several steps are taken to ensure your water quality. Each week District staff collect water samples from special sampling locations that provide a representative analysis of water being supplied throughout the District. The water samples are collected in special sampling containers, refrigerated, and taken to a state-certified laboratory soon after the sample is collected. The laboratory uses state-of-the-art testing equipment and sophisticated measuring techniques to measure water quality down to the ppb (parts per billion) level. One part per billion is equivalent to the following:
- One cent in 10 million dollars
- One second in 32 years
- One inch in 16,000 miles
Water Quality You Can Trust
Safe and Reliable Drinking Water for Your Home, School & Business
Per- and Polyfluoroalkyl Substances (PFAS) are a family of more than 4,500 chemicals, including PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate), which are prevalent in the environment and were once commonly used in many consumer products that resist heat, oils, stains, and water. They are man-made chemicals that have been used extensively in consumer products such as carpets, clothing, fabrics for furniture, paper packaging for food, fire-fighting foams, and other materials (e.g., cookware) designed to be waterproof, stain-resistant or non-stick. These chemicals can get into drinking water when products containing them are used or spilled onto the ground or into lakes, rivers, and private wells.
Walnut Valley Water District does not import water from groundwater sources or other sources that contain PFAS or PFOA/PFOS. The drinking water provided to homes, businesses, and schools is safe and exceeds all quality standards set by both the state and federal government. WVWD water quality experts continuously monitor the water supply and conduct thousands of laboratory tests each year. The test results are published by WVWD in the annual Water Quality Consumer Confidence Report. The District continues to ensure that our customers have a safe and reliable water supply amid growing concerns over the presence of PFAS. The District is committed to ensuring that the community is knowledgeable and has the resources available to understand local water quality. We invite you to learn more through the resources below:
U.S. Environmental Protection Agency’s website
California State Water Resources Control Board website
