JOHNSON COUNTY PWSD 2

HOLDEN, MO · ~12,490 people served

Check your exact address → HOLDEN overview

100

Excellent

PurityRadar safety score

PWSID

MO1024310

State

Missouri

City

HOLDEN

Population served

12,490

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

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

Lithium

27,800 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2020. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2019 Resolved

Monitoring & reporting · Gross alpha began Jul 2006 Resolved

Monitoring & reporting · Uranium began Jul 2006 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 2006 Resolved

Monitoring & reporting · Gross alpha began Apr 2006 Resolved

Monitoring & reporting · Uranium began Apr 2006 Resolved

Recent enforcement actions

State action · SOX Jul 2020
State action · SIF Dec 2019
State action · SIA Nov 2019
State action · SIE Nov 2019
State action · SOX Jan 2014
State action · SOX Aug 2011
State action · SIF Aug 2006
State action · SIA Jul 2006

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 2024

0.00675 · max 0.0335 mg/L · 14

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 MO1024310 — 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.