Water quality in Pleasanton, California
Pleasanton is in Alameda County. 27 active public water systems serve the county; 4 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 Alameda County
13 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Sfpuc-Pleasanton Wells |
1 | 0 | 1.3 mi | |
| City of Pleasanton Pleasanton |
76,689 | 0 | 3.3 mi | |
| California Water Service Livermore |
60,414 | 0 | 7.7 mi | |
| Dublin San Ramon Services District |
98,776 | 0 | 8.2 mi | |
| Zone 7 Water Agency |
40 | 0 | 8.6 mi | |
| Alameda County Water District |
344,000 | 0 | 8.8 mi | |
| City of Livermore Livermore |
38,892 | 0 | 8.8 mi | |
| City of Hayward Hayward |
162,954 | 0 | 10.5 mi | |
| Norris Canyon Property Owners Assn |
50 | 1 | 11.2 mi | |
| Trailer Haven Mobile Home Park |
459 | 0 | 15.6 mi | |
| Castlewood Domestic Water System |
524 | 1 | 16.9 mi | |
| East Bay MUD |
1,468,000 | 0 | 22.9 mi | |
| Alameda Point |
600 | 0 | 25.8 mi |
Non-community systems in Alameda County (13: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sunol Super Stop |
155 | 0 | 0 | |
|
Alameda County Fairgrounds |
82 | 1 | 1 | |
|
Chp Mission Grade Scales Pleasanton |
1,800 | 1 | 0 | |
|
Ebrpd Sunol Regional Wilderness |
91 | 0 | 0 | |
|
Ebrpd del Valle Regional Park |
9,024 | 0 | 0 | |
|
Lawrence Livermore National Lab Site 200 Livermore |
10,735 | 0 | 0 | |
|
Purple Orchid Resort Spa Livermore |
52 | 0 | 0 | |
|
Rancho los Mochos-Bsa Camp |
38 | 0 | 0 | |
|
Mountain House Bar |
25 | 0 | 0 | |
|
Ebrpd Piedmont Stables |
45 | 0 | 0 | |
|
Mountain House School |
50 | 0 | 0 | |
|
Usbr-Sldmwa Cvp Jones Pumping Plant |
90 | 0 | 0 | |
|
Rivers End Marina |
32 | 0 | 0 |
About this data
Water systems are matched to Alameda County, nearest to Pleasanton 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.