COUNTY WATER-SYSTEM LEDGER
Merced, California
EPA’s September 2026 export lists 11 active community water systems serving Merced, California, with 7 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 Merced, California
EPA associates 11 covered systems with Merced, California; their reported population-served values total 231,899 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 MercedCA2410009 | 93,692 | Ground water | No current violation flagged |
| City Of Los BanosCA2410005 | 47,419 | Ground water | Current health-based flag |
| City Of AtwaterCA2410001 | 29,479 | Ground water | No current violation flagged |
| City Of LivingstonCA2410004 | 14,894 | Ground water | Current health-based flag |
| Winton Water & Sanitary DistCA2410010 | 9,745 | Ground water | Current health-based flag |
| Delhi CwdCA2410006 | 7,784 | Ground water | Current monitoring/reporting flag |
| City Of Dos PalosCA2410002 | 7,452 | Surface water | Current monitoring/reporting flag |
| City Of GustineCA2410003 | 6,110 | Ground water | Current health-based flag |
| Cal Am - MeadowbrookCA2410008 | 5,656 | Ground water | No current violation flagged |
| Hilmar County Water DistrictCA2410012 | 5,504 | Ground water | No current violation flagged |
| Planada CsdCA2410007 | 4,164 | Ground water | Current health-based flag |
02 / SOURCE MIX
Primary water sources for Merced, California
EPA classifies 11 systems serving Merced, California across 2 primary-source categories; Ground water is the largest category with 10 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.