County · California
Madera County, California: drinking water records
This overview covers 13 ZIP codes and 69 community water systems in Madera County. It also stands in for 1 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 |
|---|---|---|---|---|---|
| Yosemite Spring Park Util Co CA2010005 | 5,300 | 540 | 6 | 13 | 8.4 ppb |
| Cal Am - Oakhurst CA2010007 | 3,693 | 240 | 0 | 20 | 5 ppb |
| Bakman Water-Rolling Hills CA2010009 | 1,107 | 180 | 0 | 2 | 4.2 ppb |
| City of Madera CA2010002 | 66,560 | 540 | 0 | 0 | 3 ppb |
| Chowchilla City Water Dept CA2010001 | 13,916 | 360 | 1 | 0 | 0 ppb |
| Madera Valley Water Company CA2010010 | 6,494 | 300 | 0 | 0 | 0 ppb |
| Riverstone/Rootcreek Water District CA2010016 | 5,507 | 0 | 0 | 1 | 0 ppb |
| Cal Am - Bass Lake CA2010003 | 4,527 | 300 | 1 | 0 | 2 ppb |
| Pearland Acres MHP TX0200353 | 501 | 0 | 0 | 1 | 0 ppb |
| Broadview Terrace Mutual Water Company CA2000521 | 498 | 0 | 0 | 1 | 2.9 ppb |
| Skp Park of the Sierras INC CA2000832 | 450 | 0 | 0 | 1 | 0 ppb |
| Cal Am - Raymond CA2010012 | 343 | 0 | 0 | 28 | 1 ppb |
| Md 46 Ahwahnee Resorts CA2000293 | 300 | 0 | 0 | 5 | 1 ppb |
| Md 08 North Fork Water System CA2000561 | 264 | 0 | 0 | 32 | 0 ppb |
| Bass Lake Heights Mutual Water CA2000502 | 250 | 0 | 0 | 2 | 3.9 ppb |
| East Acres Mutual Water Company CA2000512 | 250 | 0 | 0 | 1 | 0 ppb |
| Md 05 Mountain Ranches CA2000549 | 239 | 0 | 0 | 1 | 0 ppb |
| Md 07 Marina View Heights CA2000551 | 200 | 0 | 0 | 29 | 2.4 ppb |
| Sierra Linda Mutual Water Co CA2000506 | 200 | 0 | 0 | 52 | 3.1 ppb |
| Sky Acres Mutual Water Corp CA2000524 | 175 | 0 | 0 | 2 | 12 ppb |
| Madera Co MD1-HIDDEN Lake Estates CA2000544 | 162 | 0 | 0 | 73 | 0.8 ppb |
| Md 24 Teaford Meadow Lakes CA2000552 | 150 | 0 | 0 | 47 | 5.5 ppb |
| Cedar Valley Mutual Water Co CA2000538 | 137 | 0 | 0 | 28 | 0.8 ppb |
| Madera Co SA16 Sumner Hill CA2000729 | 135 | 0 | 0 | 58 | 3.1 ppb |
| Sugar Pine Homeowners Assoc CA2000533 | 120 | 0 | 0 | 1 | 2 ppb |
ZIP reports in Madera 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: 93645.
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.