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Water system · PWSID CA3410018

RIO LINDA/ELVERTA COMMUNITY WATER DIST

RIO LINDA, CA · ~15,460 people served

Check your exact address → RIO LINDA overview
100
Excellent
PurityRadar safety score

PWSID

CA3410018

State

California

City

RIO LINDA

Population served

15,460

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 Nov 2024). Levels in parts per trillion (ppt).

PFHxS

Perfluorohexanesulfonic acid

4 ppt

limit 10 ppt

Below EPA limit

Lithium

12,900 ppt

limit —

No federal limit

PFHxA

4.8 ppt

limit —

No federal limit

Violations & enforcement

15

Violations on record

0

Unaddressed

2

Health-based

6

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Monitoring & reporting · Total coliform began Apr 2010 Resolved
Monitoring & reporting · Total coliform began Mar 2010 Resolved
Monitoring & reporting · Total coliform began Feb 2010 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2010 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2010 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2009 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2009 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2009 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2009 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2008 Resolved
Monitoring & reporting · Nitrate began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2990 began Jan 2008 Resolved

Recent enforcement actions

  • State action · SOX Jan 2019
  • State action · SOX May 2010
  • State action · SOX Aug 2000
  • State action · SIA Aug 2000
  • State action · SOX Apr 1993
  • State action · SIA Mar 1993

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 Jun 2020

1.64 · max 1.64 mg/l as N · 2

Arsenic

1 station · latest Jun 2020

4.6 · max 4.6 ug/l · 1

Copper

1 station · latest Jun 2020

0.44 · max 0.44 ug/l · 1

Fluoride

1 station · latest Jun 2020

0.15 · max 0.15 mg/l · 1

Lead

1 station · latest Jun 2020

0.027 · max 0.027 ug/l · 1

Uranium

1 station · latest Jun 2020

0.174 · max 0.174 ug/l · 1

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 CA3410018 — 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.