LITTLEROCK CREEK IRRIGATION DIST.

LITTLEROCK, CA · ~3,040 people served

Check your exact address → LITTLEROCK overview

100

Excellent

PurityRadar safety score

PWSID

CA1910064

State

California

City

LITTLEROCK

Population served

3,040

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 Oct 2025. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2024 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2023 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2023 Resolved

Monitoring & reporting · EPA contaminant 0700 began Sep 2022 Resolved

Monitoring & reporting · Nitrate began Jul 2022 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2020 Resolved

Monitoring & reporting · Total coliform began Jul 2008 Resolved

Recent enforcement actions

State action · SFL Oct 2025
State action · SOX Aug 2025
State action · SOX Oct 2024
State action · SOX Jul 2023
State action · SFL Jun 2023
State action · SFL Jan 2023
State action · SFL Nov 2022
State action · SOX Oct 2022

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Aug 2023

1.12 · max 1.42 mg/l as N · 4

Arsenic

1 station · latest Aug 2023

0.16 · max 0.19 ug/l · 2

Fluoride

1 station · latest Aug 2023

0.135 · max 0.15 mg/l · 2

Manganese

1 station · latest Aug 2023

0.375 · max 0.45 ug/l · 2

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA1910064 — 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.