CRESCENT WATER SUPPLY

MARSHALLTOWN, IA · ~778 people served

Check your exact address → MARSHALLTOWN overview

100

Excellent

PurityRadar safety score

PWSID

IA7822086

State

Iowa

City

MARSHALLTOWN

Population served

778

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 May 2025. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2024 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2024 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2015 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved

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

Max contaminant level (MCL) · Total coliform health-based began Jul 2009 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2004 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2004 Resolved

Monitoring & reporting · Total coliform began Apr 2000 Resolved

Recent enforcement actions

State action · SIF May 2025
State action · SIE Jun 2024
State action · SIE Jun 2024
State action · SFJ Jun 2024
State action · SFJ Jun 2024
State action · SOX Apr 2024
State action · SOX Apr 2024
State action · SIF Sep 2015

This profile is built from EPA public records for system IA7822086 — 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.