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Water system · PWSID CA5410010

PORTERVILLE, CITY OF

PORTERVILLE, CA · ~63,487 people served

Check your exact address → PORTERVILLE overview
19
Action needed
PurityRadar safety score

PWSID

CA5410010

State

California

City

PORTERVILLE

Population served

63,487

Primary source

Groundwater

Score history

▼ 66 points — the score moved from 85 to 19 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 19

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

PFOA

Perfluorooctanoic acid

22 ppt

limit 4 ppt

Above EPA limit · 5.5×

PFOS

Perfluorooctanesulfonic acid

5.5 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFHxS

Perfluorohexanesulfonic acid

3.6 ppt

limit 10 ppt

Below EPA limit

Lithium

10,300 ppt

limit —

No federal limit

PFPeA

9 ppt

limit —

No federal limit

PFHxA

8.5 ppt

limit —

No federal limit

PFHpA

6.5 ppt

limit —

No federal limit

PFBA

5.1 ppt

limit —

No federal limit

PFBS

4.7 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

2

Unaddressed

1

Health-based

2

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2013. Official EPA record →

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2012 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2012 Resolved

Recent enforcement actions

  • State action · SOX Oct 2013
  • State action · SIA Mar 2013

This profile is built from EPA public records for system CA5410010 — 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.