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Water system · PWSID MO1024118

CASS COUNTY PWSD 9

100
Excellent
PurityRadar safety score

PWSID

MO1024118

State

Missouri

City

HARRISONVILLE

Population served

6,063

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 Oct 2024). Levels in parts per trillion (ppt).

Lithium

36,000 ppt

limit —

No federal limit

Violations & enforcement

1

Violations on record

0

Unaddressed

1

Health-based

9

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2011. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Sep 2010 Resolved

Recent enforcement actions

  • State action · SOX Aug 2011
  • State action · SIF Nov 2010
  • State action · SIA Sep 2010
  • State action · SIE Sep 2010
  • State action · SFG May 1991
  • State action · SIA Sep 1990
  • State action · SIA Sep 1990
  • State action · SIA Sep 1986

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Aug 2023

0.0105 · max 0.771 mg/L · 11

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system MO1024118 — 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.