The City of Chino Hills detected and corrected coliform bacteria levels in the drinking water. On March 8, 2017 the Water Distribution system HAD levels of coliform bacteria above the drinking water standard. Coliform bacteria are not harmful and there was no public health emergency. The system was flushed and new tests on March 9th detected NO coliform bacteria. To learn more, read the press release and notice to residents.
To learn more about Chino Hills water quality, we urge you to read the annual Water Quality Consumer Confidence Report. Any questions referencing this report, can be made to our Water Quality Technician at (909) 364-2808. You can also download a PDF of the 2016 Water Quality Consumer Confidence Report.
Urban Water Management Plan
The City updates the Urban Water Management Plan (UWMP) every five years. See the 2015 UWMP Errata Sheet for Minor Corrections.