County · Washington
Franklin County, Washington: drinking water records
This overview covers 5 ZIP codes and 32 community water systems in Franklin 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 |
|---|---|---|---|---|---|
| Pasco Water Department WA5366400 | 115,102 | 240 | 0 | 0 | 1.9 ppb |
| Connell City of WA5314600 | 5,150 | 180 | 0 | 0 | 1 ppb |
| Basin City Water Sewer District WA5304461 | 1,740 | 0 | 0 | 3 | 0 ppb |
| Rangeview WA53AD017 | 122 | 0 | 0 | 1 | 0 ppb |
| North Slope Estates Property WA5310761 | 97 | 0 | 0 | 2 | 0 ppb |
| I 94 Mobile Home Park MT0000410 | 90 | 0 | 0 | 1 | 2 ppb |
| Lakeview WA53AD018 | 50 | 0 | 0 | 1 | 0 ppb |
| Sunrise Estates Water System WA5313451 | 33 | 0 | 0 | 7 | 0 ppb |
| Mesa Water Department WA5354100 | 495 | 0 | 0 | 0 | 4.5 ppb |
| White Bluff Water Association WA5396100 | 386 | 0 | 0 | 0 | 0.2 ppb |
| Ringold Domestic Water Corp WA5372500 | 340 | 0 | 0 | 0 | 0 ppb |
| West Mesa Domestic Water Assn WA5394830 | 316 | 0 | 0 | 0 | 0 ppb |
| Kahlotus City of WA5337400 | 262 | 0 | 0 | 0 | 0 ppb |
| Cypress Country Estates WA5315461 | 253 | 0 | 0 | 0 | 0 ppb |
| Clark Addition Water System WA53AB809 | 189 | 0 | 0 | 0 | 0 ppb |
| West 15 Domestic Water Assn WA5394650 | 150 | 0 | 0 | 0 | 1.3 ppb |
| Pasco Heights Domestic Water Assn WA5366350 | 135 | 0 | 0 | 0 | 1 ppb |
| Radar Hill Water System WA5311901 | 128 | 0 | 0 | 0 | 0 ppb |
| Scootenay Water Assn INC WA5376750 | 120 | 0 | 0 | 0 | 0 ppb |
| Eltopia Water Association WA5323240 | 100 | 0 | 0 | 0 | 0.5 ppb |
| Canyon Farm Camp WA53AD564 | 96 | 0 | 0 | 0 | 1 ppb |
| Hi-Point Housing WA53AD259 | 96 | 0 | 0 | 0 | 0 ppb |
| Graystone Ws WA53AD688 | 94 | 0 | 0 | 0 | 0 ppb |
| Clearwater Domestic Water Assn WA5313550 | 78 | 0 | 0 | 0 | 0.6 ppb |
| River Ridge Estates WA5338792 | 77 | 0 | 0 | 0 | 2.1 ppb |
ZIP reports in Franklin 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.