WAIKOLOA

WAIKOLOA, HI · ~12,100 people served

Check your exact address → WAIKOLOA overview

100

Excellent

PurityRadar safety score

PWSID

HI0000135

State

Hawaii

City

WAIKOLOA

Population served

12,100

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 Apr 2011. Official EPA record →

Monitoring & reporting · EPA contaminant 3014 began Mar 2010 Resolved

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

Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Recent enforcement actions

State action · SIF Apr 2011
State action · SOX Jun 2010
State action · SIA Jun 2010
State action · SOX Mar 2010
State action · SIF Feb 2010
State action · SIA Feb 2010
EPA/federal action · EOX Dec 1993
EPA/federal action · EOX May 1993

This profile is built from EPA public records for system HI0000135 — 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.