DELAFIELD LAKES 402

MADISON, WI · ~50 people served

Check your exact address → MADISON overview

100

Excellent

PurityRadar safety score

PWSID

WI2686101

State

Wisconsin

City

MADISON

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2023. Official EPA record →

Monitoring & reporting · EPA contaminant 2039 began Apr 2023 Resolved

Monitoring & reporting · EPA contaminant 2039 began Jan 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Jun 2021 Resolved

Monitoring · Lead & Copper Rule began Jun 2020 Resolved

Monitoring & reporting · Nitrate began Jan 2020 Resolved

Monitoring & reporting · Total coliform began Nov 2015 Resolved

Monitoring & reporting · Total coliform began Aug 2013 Resolved

Monitoring & reporting · Total coliform began Jun 2013 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2013 Resolved

Other · EPA contaminant 7000 began Oct 2011 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2011 Resolved

Other · EPA contaminant 7000 began Jul 2011 Resolved

Recent enforcement actions

State action · SIF Sep 2023
State action · SIA Sep 2023
State action · SIA Sep 2023
State action · SIF Sep 2023
State action · SIE Sep 2023
State action · SIE Sep 2023
State action · SOX Aug 2023
State action · SOX Aug 2023

This profile is built from EPA public records for system WI2686101 — 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.