MISSION HILLS CSD

LOMPOC, CA · ~3,600 people served

Check your exact address → LOMPOC overview

100

Excellent

PurityRadar safety score

PWSID

CA4210019

State

California

City

LOMPOC

Population served

3,600

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 Jul 2023). Levels in parts per trillion (ppt).

Lithium

61,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2017. Official EPA record →

Monitoring · Lead & Copper Rule began Apr 2017 Resolved

Monitoring & reporting · Total coliform began Nov 2011 Resolved

Monitoring & reporting · Total coliform began Oct 2011 Resolved

Recent enforcement actions

State action · SFL Jun 2017
State action · SOX May 2017
State action · SOX Dec 2011
State action · SFL Dec 2011
State action · SOX Nov 2011
State action · SFL Nov 2011

This profile is built from EPA public records for system CA4210019 — 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.