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Water system · PWSID MO5010446

LAMAR PWS

LAMAR, MO · ~4,500 people served

Check your exact address → LAMAR overview
78
Good
PurityRadar safety score

PWSID

MO5010446

State

Missouri

City

LAMAR

Population served

4,500

Primary source

Surface water

Score history

▼ 22 points — the score moved from 100 to 78 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 78

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).

PFOA

Perfluorooctanoic acid

6.2 ppt

limit 4 ppt

Above EPA limit · 1.5×

Lithium

11,000 ppt

limit —

No federal limit

Violations & enforcement

30

Violations on record

0

Unaddressed

25

Health-based

100

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2021. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2019 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2019 Resolved
Treatment technique · Bromate health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2019 Resolved
Treatment technique · Bromate health-based began Apr 2019 Resolved
Treatment technique · Bromate health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2018 Resolved
Other · EPA contaminant 7500 began Sep 2017 Resolved

Recent enforcement actions

  • State action · SFO Jan 2021
  • State action · SIF Jul 2020
  • State action · SIE Jun 2020
  • State action · SFJ Jun 2020
  • State action · SIF Apr 2020
  • State action · SOX Apr 2020
  • State action · SIE Feb 2020
  • State action · SFJ Feb 2020

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 Nov 2020

0.01 · max 0.201 mg/L · 3

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 MO5010446 — 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.