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Water system · PWSID CA4210020

SANTA YNEZ RIVER WATER CONS. DIST. ID#1

SANTA YNEZ, CA · ~7,022 people served

Check your exact address → SANTA YNEZ overview
100
Excellent
PurityRadar safety score

PWSID

CA4210020

State

California

City

SANTA YNEZ

Population served

7,022

Primary source

SWP

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 2025). Levels in parts per trillion (ppt).

Lithium

22,500 ppt

limit —

No federal limit

Violations & enforcement

10

Violations on record

0

Unaddressed

10

Health-based

23

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2012. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Apr 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Feb 2008 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1996 Resolved
Treatment technique · EPA contaminant 0200 health-based began Oct 1994 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jun 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1993 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jul 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 1992 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jan 1992 Resolved

Recent enforcement actions

  • State action · SFL Jun 2012
  • State action · SOX May 2012
  • State action · SOX Mar 2008
  • State action · SFL Mar 2008
  • State action · SOX Aug 1996
  • State action · SFJ Aug 1996
  • State action · SFL Nov 1995
  • State action · SFM Nov 1994

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

4 stations · latest Jul 2025

6.7 · max 54.7 mg/L · 74

Fluoride

4 stations · latest Jul 2025

0.111 · max 0.216 mg/L · 38

Arsenic

4 stations · latest Jul 2025

2 · max 3 ug/L · 36

Manganese

4 stations · latest Jul 2025

62.1 · max 1,110 ug/L · 33

Lead

4 stations · latest Feb 2024

0.00195 · max 0.00659 mg/L · 16

Copper

4 stations · latest Jul 2025

12.1 · max 14.7 ug/L · 15

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 CA4210020 — 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.