County · Idaho
Benewah County, Idaho: drinking water records
This overview covers 6 ZIP codes and 13 community water systems in Benewah 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 |
|---|---|---|---|---|---|
| Plummer City of ID1050021 | 1,034 | 0 | 0 | 2 | 1 ppb |
| Plummer Tribal Community 101612110 | 515 | 0 | 0 | 1 | 3.1 ppb |
| Fernwood Water Dist ID1050011 | 514 | 0 | 0 | 1 | 1 ppb |
| Desmet 101600001 | 355 | 0 | 0 | 1 | 6.1 ppb |
| Tensed City of ID1050026 | 146 | 0 | 0 | 1 | 2 ppb |
| Cassandra Hills Owners Assn ID1050004 | 57 | 0 | 0 | 7 | 1 ppb |
| Coeur D'Alene Sub-Agency 101600002 | 50 | 0 | 0 | 1 | 0.5 ppb |
| St Maries City of ID1050024 | 4,173 | 0 | 0 | 0 | 1 ppb |
| Santa Water and Sewer Dist ID1050023 | 160 | 0 | 0 | 0 | 1 ppb |
| Cottonwood Point Water Assn ID1050008 | 151 | 0 | 0 | 0 | 4 ppb |
| Sunland Shores WA5385257 | 143 | 0 | 0 | 0 | 0 ppb |
| Emida Water and Sewer Association ID1050009 | 120 | 0 | 0 | 0 | 0 ppb |
| Evergreen Terrace Water Association ID1050010 | 85 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Benewah 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.