Zone 7 operates two surface water treatment plants (Del Valle Water Treatment Plant and Patterson Pass Water Treatment Plant), the Mocho Groundwater Demineralization Plant, 10 groundwater supply wells and a state-of-the-art water quality testing laboratory. Water treatment facilities are staffed by talented and committed experts in their fields who make a world of difference when it comes to bringing safe water to the Tri-Valley community.
The world of water quality is often filled with complex terms and scientific language – from parts per trillion to turbidity. Luckily the technicians at Zone 7’s state-of-the-art lab conduct the science to ensure customers have safe and clean water. In order to provide full transparency, the Wondrous World of Water campaign helps answer the question, “what in the world does all this mean?”
All water supplied to our customers meets the regulatory standards set by the state and federal governments and, in almost all cases, the quality was significantly better than required. We are committed to delivering a safe and reliable water supply to our customers. Zone 7 continues to deliver all water below the California Division of Drinking Water’s response levels for PFOA and PFOS.