DARBOY SANITARY DIST 1

APPLETON, WI · ~13,024 people served

Check your exact address → APPLETON overview

100

Excellent

PurityRadar safety score

PWSID

WI4450117

State

Wisconsin

City

APPLETON

Population served

13,024

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 Mar 2025). Levels in parts per trillion (ppt).

Lithium

14,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2025. Official EPA record →

Other · EPA contaminant 7500 began Oct 2024 Resolved

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

Max contaminant level (MCL) · Uranium health-based began Jun 1986 Resolved

Recent enforcement actions

State action · SIE Feb 2025
State action · SOX Feb 2025
State action · SOX May 1996
State action · SOX Sep 1986
State action · SIF Sep 1986
State action · SIA Sep 1986
State action · SIA Sep 1985

This profile is built from EPA public records for system WI4450117 — 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.