Water quality in El Granada, California
El Granada is in San Mateo County. 51 active public water systems serve the county; 15 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in San Mateo County
35 systems, nearest firstNon-community systems in San Mateo County (15: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Skylawn Memorial Park (skylawn Inc) |
50 | 1 | 1 | |
|
UC Elkus Ranch |
34 | 0 | 0 | |
|
Martins Beach Water System |
49 | 1 | 0 | |
|
San Gregorio Company |
32 | 1 | 0 | |
|
Optimists Volunteers for Youth |
205 | 1 | 0 | |
|
LA Honda Center |
33 | 0 | 0 | |
|
Harley Farms Goat Dairy |
113 | 0 | 0 | |
|
San Mateo County Memorial Park |
1,790 | 0 | 0 | |
|
Butano Girl Scout Camp |
154 | 0 | 0 | |
|
Butano State Park Csp |
121 | 0 | 0 | |
|
Csp Portola State Park |
172 | 0 | 0 | |
|
Pigeon Point Hostel |
67 | 1 | 1 | |
|
Gazos Creek Beach House |
33 | 0 | 0 | |
|
Costanoa Campground |
33 | 1 | 0 | |
|
Csp Ano Nuevo State Park |
709 | 0 | 0 |
About this data
Water systems are matched to San Mateo County, nearest to El Granada 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.