SENECA

SENECA, SD · ~25 people served

Check your exact address → SENECA overview

100

Excellent

PurityRadar safety score

PWSID

SD4600292

State

South Dakota

City

SENECA

Population served

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2018. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Feb 2018 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2016 Resolved

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

Other · EPA contaminant 7500 began Sep 2011 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2011 Resolved

Other began Aug 2010 Resolved

Monitoring & reporting · Total coliform began Aug 2010 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2010 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1995 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 1994 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1994 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1994 Resolved

Recent enforcement actions

State action · SOX Jun 2018
State action · SIA Apr 2018
State action · SOX May 2016
State action · SIA Mar 2016
State action · SOX Jun 2014
State action · SIA Mar 2014
State action · SIF Jan 2014
State action · SOX Jan 2014

This profile is built from EPA public records for system SD4600292 — 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.