County · California
Plumas County, California: drinking water records
This overview covers 16 ZIP codes and 30 community water systems in Plumas County. It also stands in for 5 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Lake Almanor Country Club Mwc CA3210006 | 6,000 | 300 | 0 | 1 | 0 ppb |
| American Valley CSD CA3210004 | 3,778 | 630 | 1 | 2 | 1.1 ppb |
| Chester Public U.D. CA3210009 | 2,187 | 0 | 0 | 1 | 0 ppb |
| Plumas Eureka CSD CA3210011 | 1,534 | 0 | 0 | 1 | 0 ppb |
| Grizzly Lake Csd-Delleker CA3200104 | 1,314 | 0 | 0 | 19 | 0 ppb |
| Feather River RV & MHP CA3200148 | 741 | 0 | 0 | 1 | 0 ppb |
| Blairsden Water Users Assn CA3200134 | 200 | 0 | 0 | 1 | 4 ppb |
| Gold Mountain CSD CA3205003 | 135 | 0 | 0 | 1 | 0 ppb |
| Clio Public Utility District CA3200509 | 79 | 0 | 0 | 1 | 0 ppb |
| Valivu Estates MHP CA3200189 | 54 | 0 | 0 | 1 | 0.6 ppb |
| Meadow Edge MHP CA3200138 | 53 | 0 | 0 | 1 | 0 ppb |
| Ryans Lot MT0004368 | 34 | 0 | 0 | 2 | 1 ppb |
| Frccsd Old Mill Ranch CA3200078 | 32 | 0 | 0 | 1 | 4.6 ppb |
| Frccsd Hot Springs CA3200155 | 25 | 0 | 0 | 1 | 0.6 ppb |
| City of Portola CA3210003 | 2,100 | 0 | 0 | 0 | 2 ppb |
| Hamilton Branch CSD CA3210010 | 1,874 | 0 | 0 | 0 | 0 ppb |
| West Almanor M.W.C. CA3210007 | 1,394 | 0 | 0 | 0 | 0 ppb |
| Whitehawk Ranch Mwc CA3200102 | 765 | 0 | 0 | 0 | 0 ppb |
| Graeagle Water Company CA3210005 | 737 | 0 | 0 | 0 | 0 ppb |
| Ivcsd-Greenville CA3210001 | 630 | 0 | 0 | 0 | 1.5 ppb |
| Brookview MHP WI6320316 | 300 | 0 | 0 | 0 | 2.0 ppb |
| Greenhorn Creek CSD CA3200188 | 280 | 0 | 0 | 0 | 0 ppb |
| Ivcsd Crescent Mills CA3200510 | 258 | 0 | 0 | 0 | 1.0 ppb |
| Grizzly Lake Csd-Crocker/Welch CA3200107 | 215 | 0 | 0 | 0 | 1 ppb |
| Walker Ranch CSD CA3205001 | 150 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Plumas County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 95915, 95923, 95956, 96129, 96135.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.