County · Arizona
La Paz County, Arizona: drinking water records
This overview covers 8 ZIP codes and 19 community water systems in La Paz County. It also stands in for 0 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 |
|---|---|---|---|---|---|
| Colorado River Regional Water System 090400051 | 3,476 | 60 | 0 | 1 | 2.3 ppb |
| Epcor - Lakeside AZ0415010 | 1,775 | 0 | 0 | 7 | 0 ppb |
| Epcor - Moovalya Keys AZ0415006 | 1,298 | 0 | 0 | 12 | 6.2 ppb |
| Epcor - Holiday Harbor AZ0415058 | 559 | 0 | 0 | 5 | 0 ppb |
| Epcor - Marina Village AZ0415011 | 528 | 0 | 0 | 8 | 0 ppb |
| Epcor - Parker Dam AZ0415027 | 429 | 0 | 0 | 9 | 0 ppb |
| Wenden Dwid AZ0415023 | 360 | 0 | 0 | 12 | 0 ppb |
| Salome Water Company AZ0415021 | 317 | 0 | 0 | 3 | 0 ppb |
| Bouse Dwid AZ0415038 | 284 | 0 | 0 | 19 | 0 ppb |
| Vicksburg Farm AZ0415801 | 220 | 0 | 0 | 1 | 0 ppb |
| Cibola Water Improvement District AZ0415123 | 197 | 0 | 0 | 30 | 0 ppb |
| Cienega Water Company INC AZ0415002 | 108 | 0 | 0 | 3 | 0 ppb |
| Epcor - Rio Lindo AZ0415040 | 79 | 0 | 0 | 6 | 0 ppb |
| Desert Sky Dwid AZ0415122 | 70 | 0 | 0 | 7 | 0 ppb |
| Quartzsite Town of AZ0415346 | 2,761 | 0 | 0 | 0 | 0 ppb |
| Ehrenberg Improvement District AZ0415497 | 989 | 0 | 0 | 0 | 1.5 ppb |
| Hillcrest Water Company AZ0415026 | 454 | 0 | 0 | 0 | 7 ppb |
| Q Mountain Vista MHP AZ0415509 | 440 | 0 | 0 | 0 | 2.9 ppb |
| 88 Shades RV Park AZ0415435 | 488 | 0 | 0 | 0 | not reported |
ZIP reports in La Paz County
No ZIP report in this county is published yet.
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.