JEFFERSON

JEFFERSON, SD · ~475 people served

Check your exact address → JEFFERSON overview

100

Excellent

PurityRadar safety score

PWSID

SD4600060

State

South Dakota

City

JEFFERSON

Population served

475

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 Apr 2016. Official EPA record →

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

Max contaminant level (MCL) · Total coliform health-based began Sep 2010 Resolved

Treatment technique · EPA contaminant 0400 health-based began Dec 2004 Resolved

Max contaminant level (MCL) · Total coliform health-based began May 2000 Resolved

Monitoring & reporting · EPA contaminant 2992 began Jul 1994 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jul 1994 Resolved

Monitoring & reporting · EPA contaminant 2378 began Jul 1994 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jul 1994 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jul 1994 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jul 1994 Resolved

Monitoring & reporting · EPA contaminant 2987 began Jul 1994 Resolved

Monitoring & reporting · EPA contaminant 2985 began Jul 1994 Resolved

Recent enforcement actions

State action · SOX Apr 2016
State action · SIA Feb 2014
State action · SOX Apr 2011
State action · SIF Sep 2010
State action · SIE Sep 2010
State action · SOX May 2005
State action · SO6 May 2005
State action · SOX Dec 2000

This profile is built from EPA public records for system SD4600060 — 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.