KNOB NOSTER PWS

KNOB NOSTER, MO · ~2,863 people served

Check your exact address → KNOB NOSTER overview

100

Excellent

PurityRadar safety score

PWSID

MO1010432

State

Missouri

City

KNOB NOSTER

Population served

2,863

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2023. Official EPA record →

Monitoring · Lead & Copper Rule began Mar 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2004 Resolved

Monitoring & reporting · Thallium began Jan 2004 Resolved

Monitoring & reporting · EPA contaminant 2982 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2969 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2983 began Jan 1994 Resolved

Monitoring & reporting · EPA contaminant 2984 began Jan 1994 Resolved

Recent enforcement actions

State action · SIF May 2023
State action · SIE Apr 2023
State action · SIA Apr 2023
State action · SOX Apr 2023
State action · SOX Aug 2006
State action · SOX Nov 2005
State action · SOX Mar 1995
State action · SIA Sep 1989

This profile is built from EPA public records for system MO1010432 — 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.