- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- PFOA (a PFAS): found in 1 of 4 samples, average 1.2 ppt, highest 4.8 ppt (EPA UCMR 5 testing, Nov 2023–Aug 2024)
Public EPA test results
What EPA records show for Little Thompson WD
EPA CO0135477 · serves Larimer County, CO · about 25,654 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Little Thompson WD (EPA CO0135477)
What EPA records show for Little Thompson WD, as of October 14, 2026
We found no health-based violations in EPA's records for this system (CO0135477) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Little Thompson WD (SDWIS). Data as of October 14, 2026.
This system buys water from FT Collins Loveland WD (CO0135292), Carter Lake Filter Plant (CO0135476), Loveland City of (CO0135485) and 1 more; see those systems' records.
Source: FT Collins Loveland WD (CO0135292) report, Carter Lake Filter Plant (CO0135476) report, Loveland City of (CO0135485) report, Milliken Town of (CO0162511) report. Data as of October 14, 2026.
EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Little Thompson WD use chloramine?
We didn't find chloramine in Little Thompson WD's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.