PWSID
CO0101833
State
Colorado
City
THORNTON
Population served
1,740
Primary source
SWP
Score history
No change since tracking began Jun 18, 2026.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.
Violations & enforcement
2
Violations on record
0
Unaddressed
0
Health-based
7
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Oct 2023. Official EPA record →
Recent enforcement actions
- State action · SFH Oct 2023
- State action · SFH Dec 2022
- State action · SIA Jun 2022
- State action · SIE Jun 2022
- State action · SIE May 2022
- State action · SIA May 2022
- State action · SOX May 2022
This profile is built from EPA public records for system CO0101833 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.