ROLLING HILLS COMMUNITY, LLC

COSTA MESA, CA · ~200 people served

Check your exact address → COSTA MESA overview

100

Excellent

PurityRadar safety score

PWSID

NY3300992

State

California

City

COSTA MESA

Population served

200

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 Jan 2025. Official EPA record →

Monitoring & reporting · Nitrate began Apr 2024 Resolved

Monitoring & reporting · Nitrate began Oct 2023 Resolved

Monitoring & reporting · Nitrate began Jul 2023 Resolved

Monitoring & reporting · Nitrate began Oct 2022 Resolved

Monitoring & reporting · Nitrate began Apr 2022 Resolved

Monitoring & reporting · Nitrate began Jan 2022 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2021 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2021 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2017 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2017 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2016 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2016 Resolved

Recent enforcement actions

State action · SOX Jan 2025
State action · SFG Jan 2025
State action · SFJ Jan 2025
State action · SOX Mar 2024
State action · SOX Feb 2024
State action · SFJ Feb 2024
State action · SFG Feb 2024
State action · SFG Jan 2024

This profile is built from EPA public records for system NY3300992 — 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.