DIAGONAL WATER DEPARTMENT

DIAGONAL, IA · ~338 people served

Check your exact address → DIAGONAL overview

100

Excellent

PurityRadar safety score

PWSID

IA8018040

State

Iowa

City

DIAGONAL

Population served

338

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 Jun 2025. Official EPA record →

Other · EPA contaminant 7500 began Mar 2025 Unaddressed

Other · EPA contaminant 7500 began Oct 2024 Unaddressed

Monitoring · Lead & Copper Rule began Oct 2024 Resolved

Monitoring & reporting · Nitrite began Oct 2024 Resolved

Monitoring & reporting · Nitrite began Apr 2024 Resolved

Monitoring & reporting · Nitrite began Jan 2024 Resolved

Monitoring · Lead & Copper Rule began Apr 2023 Resolved

Monitoring · Lead & Copper Rule began Aug 2021 Resolved

Monitoring & reporting · Lead & Copper Rule began Nov 2019 Resolved

Monitoring · Lead & Copper Rule began Oct 2019 Resolved

Monitoring & reporting · Lead & Copper Rule began Jun 2018 Resolved

Other · EPA contaminant 7500 began Nov 2015 Resolved

Recent enforcement actions

State action · SO6 Jun 2025
State action · SIA Jun 2025
State action · SFJ Jun 2025
State action · SFJ Jun 2025
State action · SIA Jun 2025
State action · SO6 Jun 2025
State action · SIF Mar 2025
State action · SIE Feb 2025

This profile is built from EPA public records for system IA8018040 — 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.