TapGraded
D

PORTERVILLE, CITY OF

Porterville, CA · 63,487 served

PORTERVILLE, CITY OF serves 63,487 people in Porterville, CA. It has 1 health-based violation in the last 5 years. TapGraded gives this system a D.

Score breakdown

Health-based violations (5y)

1

Monitoring violations (5y)

1

Currently unaddressed

1

Overall score

53/100

Violation history (last 5 years)

2024
Health-based Monitoring / reporting

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Lead (Lead and Copper Rule)

EPA's current lead action level is 15 ppb (dropping to 10 ppb in 2027 under the Lead and Copper Rule Improvements).

90th-percentile lead sample 0 ppb
0 ppb EPA action level: 15 ppb

PFAS (UCMR5 occurrence data)

PFOA 22 ppt over limit
0 ppt EPA MCL: 4 ppt
HFPO-DA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFHxS 3.6 ppt
0 ppt EPA MCL: 10 ppt
PFNA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFOS 23 ppt over limit
0 ppt EPA MCL: 4 ppt

System details

System type
Community water system
Water source
Ground water
Ownership
Local government
Service connections
17,666

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Frequently asked questions

Is Porterville, CA tap water safe to drink?

PORTERVILLE, CITY OF has 1 health-based violation in the last 5 years. TapGraded gives this system a D.

Does PORTERVILLE, CITY OF have lead in its water?

The most recent 90th-percentile lead sample is 0 ppb, versus the EPA action level of 15 ppb.

Has PFAS been detected in PORTERVILLE, CITY OF's water?

Yes — PFAS was detected at or above the EPA MCL for 2 of the tracked analytes.

Source: EPA SDWIS/ECHO · Data as of 2026Q2