GREEN SHORES SUBD

SHELL KNOB, MO · ~120 people served

Check your exact address → SHELL KNOB overview

100

Excellent

PurityRadar safety score

PWSID

MO5036102

State

Missouri

City

SHELL KNOB

Population served

120

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 Oct 2025. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2025 Unaddressed

Reporting · EPA contaminant 5200 began Oct 2024 Resolved

Other · EPA contaminant 7000 began Jul 2013 Resolved

Monitoring & reporting · Thallium began Jan 1999 Resolved

Recent enforcement actions

State action · SIA Oct 2025
State action · SIE Oct 2025
State action · SIF Oct 2025
State action · SOX Nov 2024
State action · SIA Jan 2016
State action · SOX Sep 2014
State action · SOX Oct 2000
State action · SIA Sep 1989

This profile is built from EPA public records for system MO5036102 — 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.