Home/ Directory/ CA/ SOUTH GATE-CITY, WATER DEPT.

Water system · PWSID CA1910152

SOUTH GATE-CITY, WATER DEPT.

SOUTH GATE, CA · ~76,443 people served

Check your exact address → SOUTH GATE overview

Action needed

PurityRadar safety score

PWSID

CA1910152

State

California

City

SOUTH GATE

Population served

76,443

Primary source

SWP

Score history

▼ 63 points — the score moved from 100 to 37 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 37

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

PFOS

Perfluorooctanesulfonic acid

19 ppt

limit 4 ppt

Above EPA limit · 4.8×

PFOA

Perfluorooctanoic acid

7.5 ppt

limit 4 ppt

Above EPA limit · 1.9×

PFHxS

Perfluorohexanesulfonic acid

4.3 ppt

limit 10 ppt

Below EPA limit

PFPeA

3.6 ppt

limit —

No federal limit

PFBS

3.5 ppt

limit —

No federal limit

PFHxA

3.2 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring & reporting · EPA contaminant 2033 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2037 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2015 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2032 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2035 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2036 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2005 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2010 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2020 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2031 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2034 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 2039 began Apr 2018 Resolved

Recent enforcement actions

State action · SOX Oct 2019
State action · SFL Sep 2018
State action · SOX Jan 2014
State action · SIA Mar 2012
State action · SIA Mar 2008
State action · SOX Mar 2008
State action · SIA Nov 2007
State action · SOX Nov 2007

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 2021

2.19 · max 2.19 mg/l as N · 2

Arsenic

1 station · latest Jun 2021

3.1 · max 3.1 ug/l · 1

Atrazine

1 station · latest Jun 2021

0.059 · max 0.059 ug/l · 1

Copper

1 station · latest Jun 2021

0.64 · max 0.64 ug/l · 1

Fluoride

1 station · latest Jun 2021

0.33 · max 0.33 mg/l · 1

Lead

1 station · latest Jun 2021

0.098 · max 0.098 ug/l · 1

Manganese

1 station · latest Jun 2021

3.27 · max 3.27 ug/l · 1

Uranium

1 station · latest Jun 2021

3.87 · max 3.87 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 CA1910152 — 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.