MARVIN

SOUTH SHORE, SD · ~19 people served

Check your exact address → SOUTH SHORE overview

100

Excellent

PurityRadar safety score

PWSID

SD4600203

State

South Dakota

City

SOUTH SHORE

Population served

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

220

Violations on record

Unaddressed

Health-based

630

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2024. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Apr 2023 Resolved

Monitoring & reporting · Combined radium-226/228 began Jan 2020 Resolved

Monitoring & reporting · Gross alpha began Jan 2020 Resolved

Monitoring & reporting · Nitrate began Jan 2020 Resolved

Monitoring & reporting · Uranium began Jan 2020 Resolved

Monitoring & reporting · EPA contaminant 1094 began Jan 2020 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2019 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2015 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2015 Resolved

Monitoring & reporting · Nitrite began Jan 2015 Resolved

Monitoring & reporting · Total coliform began May 2014 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2014 Resolved

Recent enforcement actions

State action · SOX Apr 2024
State action · SIE Jul 2023
State action · SOX Mar 2021
State action · SOX Jan 2021
State action · SOX Jan 2021
State action · SOX Jan 2021
State action · SOX Jan 2021
State action · SIE Jan 2021

This profile is built from EPA public records for system SD4600203 — 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.