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Water system · PWSID MO1010320

GRAIN VALLEY PWS

GRAIN VALLEY, MO · ~16,000 people served

Check your exact address → GRAIN VALLEY overview
100
Excellent
PurityRadar safety score

PWSID

MO1010320

State

Missouri

City

GRAIN VALLEY

Population served

16,000

Primary source

GWP

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

Latest detections from EPA’s UCMR5 monitoring (through Nov 2024). Levels in parts per trillion (ppt).

Lithium

30,800 ppt

limit —

No federal limit

Violations & enforcement

10

Violations on record

0

Unaddressed

1

Health-based

24

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2015. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jul 2015 Resolved
Monitoring & reporting · Total coliform began Jul 2007 Resolved
Monitoring & reporting · Total coliform began Feb 2003 Resolved
Monitoring & reporting · Total coliform began Oct 2001 Resolved
Other · EPA contaminant 7000 began Jul 2001 Resolved
Monitoring & reporting · Total coliform began Nov 1996 Resolved
Monitoring & reporting · Total coliform began Jul 1994 Resolved
Monitoring & reporting · Total coliform began Aug 1993 Resolved
Monitoring & reporting · Total coliform began Apr 1993 Resolved
Monitoring & reporting · Total coliform began Sep 1992 Resolved

Recent enforcement actions

  • State action · SOX Oct 2015
  • State action · SIF Aug 2015
  • State action · SIE Jul 2015
  • State action · SFJ Jul 2015
  • State action · SOX Jan 2014
  • State action · SOX Jan 2014
  • State action · SIF Oct 2007
  • State action · SIE Aug 2007

This profile is built from EPA public records for system MO1010320 — 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.