County · Idaho
Boundary County, Idaho: drinking water records
This overview covers 4 ZIP codes and 14 community water systems in Boundary 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 |
|---|---|---|---|---|---|
| Bee Line Water Assn INC ID1110001 | 533 | 0 | 0 | 4 | 2 ppb |
| Mission Creek Water Assn ID1110019 | 263 | 0 | 0 | 79 | 1 ppb |
| Paradise Valley Water Assn ID1110023 | 250 | 0 | 0 | 1 | 2 ppb |
| Twenty Mile Creek Water Assn ID1110030 | 225 | 0 | 0 | 4 | 5 ppb |
| Trow Creek Water Assn ID1110029 | 98 | 0 | 0 | 2 | 1 ppb |
| Moravia Water Assn ID1110020 | 80 | 0 | 0 | 1 | 1 ppb |
| Curley Creek Water Assn ID1110008 | 50 | 0 | 0 | 1 | 0 ppb |
| Deep Creek Water Company ID1110011 | 30 | 0 | 0 | 1 | 2 ppb |
| Bonners Ferry City of ID1110003 | 3,367 | 0 | 0 | 0 | 2 ppb |
| Three Mile Water Dist ID1110028 | 2,458 | 0 | 0 | 0 | 11 ppb |
| Cabinet Mountains Water Dist ID1110042 | 2,335 | 0 | 0 | 0 | 1 ppb |
| Moyie Springs City of ID1110021 | 1,123 | 0 | 0 | 0 | 2 ppb |
| Skin Creek Water Assn ID1110025 | 200 | 0 | 0 | 0 | 2 ppb |
| Cow Creek Water Assn ID1110007 | 28 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Boundary 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.