SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1
California — Community Water System — PWSID: CA1910189
System Information
| PWSID | CA1910189 |
| System Name | SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1 |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | EL MONTE |
| ZIP Code | 91734-2010 |
| Address | P.O.BOX 6010 |
| Organization | NGUYEN, HAI-VAN |
| Phone | 626-448-6183 |
Population & Service
| Population Served | 9,630 |
| Service Connections | 1,623 |
Drinking Water Violations (9)
This water system has 9 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2009 | Sep 30, 2009 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Sep 30, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2009 | Sep 30, 2009 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Sep 30, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2009 | Sep 30, 2009 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Sep 30, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2009 | Sep 30, 2009 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Sep 30, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Dec 1, 2007 | Sep 30, 2008 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Sep 30, 2008 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Dec 1, 2007 | Sep 30, 2008 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Sep 30, 2008 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Dec 1, 2007 | Sep 30, 2008 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Sep 30, 2008 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Dec 1, 2007 | Sep 30, 2008 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Sep 30, 2008 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 1987 | Aug 31, 1987 | Other | No | No | — | — | — | Archived | Aug 31, 1987 | Miscellaneous Other Rules |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.