Water quality in Madison, California
Madison is in Yolo County. 88 active public water systems serve the county; 32 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Yolo County
15 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Esparto C.s.d. |
3,572 | 0 | 3.0 mi | |
| Wild Wings Golf Community |
1,115 | 0 | 4.8 mi | |
| Woodland-Davis Clean Water Agency Woodland |
0 | 0 | 8.4 mi | |
| Cacheville Service Dist |
239 | 8 | 9.5 mi | |
| Rolling Acres Mutual Water Company |
40 | 0 | 9.8 mi | |
| Yolo CO Housing Authority-El Rio Villa |
432 | 0 | 9.9 mi | |
| City of Winters Winters |
7,115 | 0 | 10.2 mi | |
| City of Woodland Woodland |
61,462 | 0 | 12.0 mi | |
| Bonfire Village Hotel |
25 | 1 | 13.4 mi | |
| UC Davis |
13,177 | 1 | 14.3 mi | |
| Cal AM Dunnigan |
602 | 0 | 14.4 mi | |
| City of Davis Davis |
67,826 | 0 | 15.3 mi | |
| Knights Landing Svc. Dist. |
1,099 | 1 | 15.8 mi | |
| Campers Inn RV & Golf Course |
95 | 1 | 15.9 mi | |
| City of West Sacramento West Sacramento |
55,991 | 1 | 23.9 mi |
Non-community systems in Yolo County (72: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Yolo County, nearest to Madison 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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.