Westminster, CO water quality
Westminster, CO is served by 4 public water systems, serving 203,975 people combined. Across those systems, we count 1 health-based violation in the last 5 years. The worst Tap Grade among them is B.
Get alerted when Westminster's water gets a violation
We'll only email you about this water system. Unsubscribe anytime.
Worried about what's in your tap?
See which water filters are certified to remove the contaminants found in your area.
Find a filter that matches your waterFrequently asked questions
Is Westminster, CO tap water safe to drink?
4 public water systems serve Westminster, CO, with 1 health-based violation in the last 5 years across them. The worst Tap Grade among them is B.
Does Westminster's water have lead in it?
The most recent 90th-percentile lead sample is 1.3 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Westminster's water?
These systems were tested under UCMR5 and no PFAS was detected above the reporting limit in the analytes we track.
Source: EPA SDWIS/ECHO · Data as of 2026Q2