The basic goal of the Management and Staff of Riverside Highland Water Company is to provide our customers/shareholders with safe and reliable drinking water at their tap. We are committed to excellent customer service and will respond 24 hours per day, seven days a week, for both our domestic and irrigation water users.

If at any time you notice any unusual activity, damage or graffiti at a Riverside Highland Water Company’s facility, please call us at 909-825-4128.


During the year 2021, the Company will continue the system enhancements by the additional replacement of the transmission mains, as well as water main replacement throughout the City of Grand Terrace. We are continuing to work with developers in Riverside County to expand our water system.