County · Colorado
Larimer County, Colorado: drinking water records
This overview covers 18 ZIP codes and 48 community water systems in Larimer County. It also stands in for 3 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 |
|---|---|---|---|---|---|
| Ft Collins City of CO0135291 | 179,901 | 120 | 0 | 1 | 2.8 ppb |
| Estes Park Town of CO0135257 | 16,722 | 240 | 0 | 1 | 1.4 ppb |
| Berthoud Town of CO0135138 | 14,211 | 120 | 0 | 1 | 10 ppb |
| Wellington Town of CO0135838 | 11,720 | 180 | 0 | 2 | 1 ppb |
| Ymca Rockies Wind River CO0135883 | 3,730 | 120 | 0 | 17 | 2 ppb |
| Loveland City of CO0135485 | 91,077 | 150 | 0 | 0 | 3.3 ppb |
| Ft Collins Loveland WD CO0135292 | 63,532 | 240 | 0 | 0 | 2 ppb |
| East Larimer County WD CO0135233 | 27,944 | 120 | 0 | 0 | 3.9 ppb |
| Csu Main and West Housing Campus CO0235184 | 27,375 | 120 | 0 | 0 | 8 ppb |
| Little Thompson WD CO0135477 | 25,654 | 120 | 1 | 0 | 9 ppb |
| Northern Colorado Wa CO0135554 | 4,675 | 300 | 0 | 0 | 1 ppb |
| West Fort Collins WD CO0135290 | 4,000 | 120 | 0 | 0 | 5.1 ppb |
| Pinewood Springs WD CO0135610 | 745 | 0 | 0 | 26 | 3 ppb |
| Riverview Cg CO0235676 | 450 | 0 | 0 | 9 | 0.5 ppb |
| Big Elk Meadows Wa CO0135143 | 405 | 0 | 0 | 8 | 3 ppb |
| Consolidated Glacier View Meadows Assoc CO0135315 | 395 | 0 | 0 | 1 | 0 ppb |
| Apple & Cherry Ridge Village CO0135119 | 350 | 0 | 0 | 1 | 2 ppb |
| Nueva Vida Mobile Home Park CO0135600 | 266 | 0 | 0 | 2 | 0 ppb |
| Annunciation Heights CO0235185 | 260 | 0 | 0 | 5 | 15 ppb |
| Newell Warnock Wa CO0135538 | 160 | 0 | 0 | 1 | 2.5 ppb |
| Meadowlark Mobile Home Park CO0135505 | 125 | 0 | 0 | 1 | 0 ppb |
| Shambhala Mountain Center CO0235685 | 90 | 0 | 0 | 15 | 1.5 ppb |
| Eden Valley Institute CO0135237 | 80 | 0 | 0 | 6 | 0.8 ppb |
| Spring Canyon WSD CO0135721 | 2,320 | 0 | 0 | 0 | 15 ppb |
| Timber Ridge MHP CO0135742 | 1,736 | 0 | 0 | 0 | 1.9 ppb |
ZIP reports in Larimer 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: 80515, 80532, 82063.
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.