Water / Wastewater

Automated Metering Infrastructure (AMI) Project

The City of Colton Public Works and Utility Services Department will be starting the installation of the Automated Metering Infrastructure (AMI) Project.

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Capital Improvement Projects (CIP)

The City of Colton Public Works and Utility Services Department will be starting the construction of Well 32 and 33. 

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City of Colton Water Department Public Hearing Notice Water Shortage Contingency Plan

Notice is hereby given that on June 15, 2021, at 6 pm in the City of Colton Water Departments virtual meeting, the City of Colton Water Department (CWD) and Colton City Council will conduct a public hearing to receive public comments and consider the adoption of the Draft Water Shortage Contingency Plan (WSCP).

Link Draft Water shortage contingency plan (PDF)

Wild Canyon Reservoir stores 2,000,000 gallons of waterView current water restrictions.

Abundant local water supply is one of Colton's greatest assets. The city sits on one of the largest potable aquifers in the State of California, therefore, 100% of the city's water comes from deep water wells. Colton's existing potable water system facilities consist of 10 wells, 4 main booster pumping plants, 6 water storage reservoirs, 2 pressure reducing facilities, and over 120 miles of water transmission and distribution pipelines.


A water treatment facility on a gravel roadThe City owns, operates and maintains a wastewater collection, pumping and treatment system. The wastewater treatment plant also serves the City of Grand Terrace and unincorporated County areas. The plant utilizes a conventional and extended aeration secondary treatment process to product treated effluent in compliance with Regional Water Quality Control Board regulations. In addition, a regional tertiary treatment plant serving both the Cities of Colton and San Bernardino treats the effluent from our wastewater treatment plant and returns the water to the Santa Ana River.

Amended 2015 Regional Urban Water Management Plan