Water quality in Monterey, California
Monterey is in Monterey County. 311 active public water systems serve the county; 127 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Monterey County
156 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Merrill Gardens Iris Canyon WS |
136 | 1 | 1.3 mi | |
| Seaside Municipal Water System |
2,800 | 0 | 3.2 mi | |
| Canada Woods WC |
356 | 0 | 3.6 mi | |
| Marina Coast Water District |
38,918 | 0 | 6.5 mi | |
| Cal AM Water Company Hidden Hills |
1,521 | 0 | 7.2 mi | |
| Tierra Vista Mwc |
54 | 1 | 7.4 mi | |
| Laguna Seca WC |
162 | 1 | 7.8 mi | |
| Outlook WA |
35 | 0 | 8.2 mi | |
| Robley Property Mws |
92 | 1 | 8.4 mi | |
| Tierra Meadows HOA WS |
58 | 0 | 8.5 mi | |
| Carmel Riviera Mwc |
584 | 0 | 8.6 mi | |
| Tierra Verde Mwc |
48 | 1 | 8.7 mi | |
| Woodside WA |
45 | 1 | 8.8 mi | |
| Cal AM Water Company Toro |
1,442 | 0 | 8.9 mi | |
| Calera Canyon Heights HOA |
40 | 0 | 9.2 mi | |
| Cal AM Water Company Ambler Park |
1,370 | 0 | 9.7 mi | |
| Santa Lucia Preserve WS |
524 | 1 | 9.9 mi | |
| Bluffs WS |
120 | 0 | 10.4 mi | |
| Hitchcock RD WS #01 |
35 | 0 | 11.2 mi | |
| Jost Post WA |
56 | 0 | 11.5 mi | |
| Vista del Toro WS |
92 | 2 | 11.5 mi | |
| Mesa del Toro Mwc |
90 | 0 | 11.8 mi | |
| Cwsc Salinas Hills |
7,733 | 0 | 12.2 mi | |
| Mount Toro Ranchos Mwa |
35 | 0 | 12.5 mi | |
| Tasco Spreckels Water Company |
672 | 0 | 13.1 mi |
Non-community systems in Monterey County (154: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Monterey County, nearest to Monterey first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.