TapGraded
A

SANTOS RANCH PWS #5-CSA #35

Stockton, CA · 320 served

SANTOS RANCH PWS #5-CSA #35 serves 320 people in Stockton, CA. It has 0 health-based violations in the last 5 years. TapGraded gives this system an A.

Score breakdown

Health-based violations (5y)

0

Monitoring violations (5y)

0

Currently unaddressed

0

Overall score

100/100

Violation history (last 5 years)

No violations on record.

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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)

This system was not required to sample under UCMR5 (systems serving fewer than 3,300 people are mostly exempt).

System details

System type
Community water system
Water source
Ground water
Ownership
Local government
Service connections
97

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Frequently asked questions

Is Stockton, CA tap water safe to drink?

SANTOS RANCH PWS #5-CSA #35 has 0 health-based violations in the last 5 years. TapGraded gives this system an A.

Does SANTOS RANCH PWS #5-CSA #35 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 SANTOS RANCH PWS #5-CSA #35's water?

This system was not required to sample under UCMR5 (systems serving fewer than 3,300 people are mostly exempt).

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