BROWN-DAY-MARSHALL RWS

BRITTON, SD · ~5,673 people served

Check your exact address → BRITTON overview

100

Excellent

PurityRadar safety score

PWSID

SD4600882

State

South Dakota

City

BRITTON

Population served

5,673

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

Latest detections from EPA’s UCMR5 monitoring (through Aug 2023). Levels in parts per trillion (ppt).

Lithium

135,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2012. Official EPA record →

Monitoring & reporting · EPA contaminant 3014 began Jul 2011 Resolved

Other · EPA contaminant 7000 began Jul 2003 Resolved

Recent enforcement actions

State action · SIF Jun 2012
State action · SOX Aug 2011
State action · SIE Jul 2011
State action · SOX Jul 2003
State action · SO6 Jul 2003
State action · SIA Sep 1987

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

5 stations · latest Aug 2024

0.175 · max 0.89 mg/L · 34

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system SD4600882 — 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.