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Water system · PWSID SD4600146

GRENVILLE

GRENVILLE, SD · ~48 people served

Check your exact address → GRENVILLE overview
100
Excellent
PurityRadar safety score

PWSID

SD4600146

State

South Dakota

City

GRENVILLE

Population served

48

Primary source

SWP

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

27

Violations on record

0

Unaddressed

2

Health-based

79

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2025. Official EPA record →

Monitoring · Lead & Copper Rule began Aug 2025 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2020 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2014 Resolved
Monitoring & reporting · Total coliform began Sep 2014 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2014 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2014 Resolved
Other · EPA contaminant 7000 began Jul 2003 Resolved
Other · EPA contaminant 7500 began Jun 2003 Resolved
Monitoring & reporting · Total coliform began Jun 2003 Resolved

Recent enforcement actions

  • State action · SOX Oct 2025
  • State action · SIE Aug 2025
  • State action · SOX Sep 2021
  • State action · SIF Jun 2021
  • State action · SIE Oct 2020
  • State action · SOX Sep 2018
  • State action · SIF Mar 2018
  • State action · SIE Oct 2017

This profile is built from EPA public records for system SD4600146 — 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.