Is Thornton, Colorado tap water safe?
6 water systems report serving Thornton. Your water depends on which one serves your address. Check your bill if unsure.
A
Woodland Hills MHC
Serves 1,740 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A
Redwood Estates
Serves 1,500 people · Surface water · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
C
The Grove at Alta Ridge
Serves 1,300 people · Surface water · Full report →
1 health-based violation in the last 5 years; 14 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).
C
Avilla Eastlake
Serves 410 people · Surface water · Full report →
1 health-based violation in the last 5 years; 22 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
A
Chaparral Village MHP
Serves 303 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A
Thornton Estates
Serves 300 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).