COUNTY WATER-SYSTEM LEDGER
Madera, California
EPA’s September 2026 export lists 11 active community water systems serving Madera, California, with 2 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Madera, California
EPA associates 11 covered systems with Madera, California; their reported population-served values total 119,277 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| City Of MaderaCA2010002 | 66,560 | Ground water | No current violation flagged |
| Chowchilla City Water DeptCA2010001 | 13,916 | Ground water | No current violation flagged |
| Madera Valley Water CompanyCA2010010 | 6,494 | Ground water | No current violation flagged |
| Riverstone/Rootcreek Water DistrictCA2010016 | 5,507 | Ground water | Current health-based flag |
| Yosemite Spring Park Util CoCA2010005 | 5,300 | Ground water | Current health-based flag |
| Cal Am - Bass LakeCA2010003 | 4,527 | Surface water | No current violation flagged |
| Tesoro Viejo Master Mwc, Inc.CA2010017 | 3,885 | Surface water | No current violation flagged |
| Cal Am - OakhurstCA2010007 | 3,693 | Ground water | No current violation flagged |
| Valley State PrisonCA2010801 | 3,173 | Ground water | No current violation flagged |
| Madera Co Md10A-Madera RanchosCA2010008 | 3,172 | Ground water | No current violation flagged |
| Madera Co Csa 22C Gunner RanchCA2010019 | 3,050 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Madera, California
EPA classifies 11 systems serving Madera, California across 2 primary-source categories; Ground water is the largest category with 9 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.