The City uses federal and state certified laboratories for bacteriological, physical, chemical and radiological water analysis. Samples from throughout the system are collected weekly and submitted for testing by specially trained water personnel to ensure the safety of the water supply and compliance with all applicable standards. A total of 13 sampling stations are located throughout the City of Indio and surrounding Riverside County locations at wells, on water distribution lines, at booster stations, and near reservoirs. The water was produced from twelve underground water wells, with all wells pumping into four aboveground reservoirs. The water from reservoir storage is pumped into the system Electric and natural gas engines power the distribution system.
Pressure is maintained in the distribution system by pressure-control variable speed motors.
No other treatment of City of Indio water occurs. The water system began the year with 9510 active customer service accounts and ended with 9921 customer service accounts. Average is average of City of Indio Wells. The above water analysis is based on 1998 averages.