An 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 fifteen wells, five main booster pumping plants, nine water storage reservoirs, two pressure reducing facilities, and over 120 miles of water transmission and distribution pipelines.
The 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.
| Community Involvement Information for City of Colton Efforts to Assess Perchlorate, Trichloroethylene and other Hazardous Substances within the Rialto-Colton Groundwater Basin. |
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| Rialto-Colton Basin Preliminary Assessment Information |
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Draft Preliminary Assessment (Nov 15 2006) |
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Joint Defense Group Comments to Draft Preliminary Assessment (Jan 12 2007) |
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Continued Wellhead Perchlorate Treatment Assessment (Dec 06 2007) |
| Monitoring Well Installation Information |
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Workplan for Installation and Sampling of Groundwater Monitoring Wells (Jul 19 2006) |
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Regional Water Quality Control Board Comments |
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DPRA Response to RWQCB Comments (Aug 14 2006) |
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Regional Water Quality Control Board Review of Responses (Aug 22 2006) |
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DPRA Response to Regional Water Quality Control Board Review (Aug 29 2006) |
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Revised Workplan for Installation and Sampling of Groundwater Monitoring Wells (Nov 15 2006) |
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Addendum to Revised Workplan (Aug 28 2007) |
| Rialto-Colton Basin Site Inspection Information |
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Site Inspection Report Perchlorate, Trichloroethylene and Other Hazardous Substances Within the Rialto-Colton Groundwater Basin County of San Bernardino, California (Apr 23 2008) |
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Figure 1 Site Location Map |
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Figure 2 Map of Rialto-Colton Basin with Well Locations, Suspected Source Areas and Lines of Cross Section |
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Figure 3A Colton A-A' Cross Section |
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Figure 3B Colton B-B' Cross Section |
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Figure 3C Colton C-C' Cross Section |
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Figure 4A Groundwater Elevation Contours Colton-Rialto Basin, November 2007 |
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Updated Site Evaluation of Perchlorate Contamination in Groundwater Within the Rialto-Colton Groundwater Basin and Assessment of the Need to Continue Wellhead Treatment at Impacted City of Colton Drinking Water Wells (Apr 23 2010) |
| Community Involvement Information |
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Community Involvement Plan (May 4 2006) |
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Revised Community Involvement Plan (Nov 15 2006) |
| Notices and Upcoming Events |
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Notice of Publication of Draft Work Plan for Monitoring Well Installation (Nov 20 2006) |
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Notice of Closing Date for Comments on Work Plan for Monitoring Well Installation (Aug 10 2006) |
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Notice of Publication of Draft Preliminary Assessment - Comment Period Open |
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Notice of Publication and City Council Information Presentation on Wellhead Treatment of Perchlorate (Dec 05 2007) |
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Notice of Public Meeting (April 29 2008) |
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In Addition to the Web Site, the Above Listed Reports and Related Information Can Also be Viewed at:
- San Bernardino Public Library, 555 West 6th Street, San Bernardino CA
- City of Colton Public Library, 656 North 9th Street, Colton CA
- City of Colton City Hall, 650 North La Cadena Drive, Colton CA
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| Submit Comments or Questions |
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All Items Listed Above Remain Open for Comment. Send Comments, Questions or Requests for Additional Information on Any of the Above Listed or Related Items to water@ci.colton.ca.us |
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