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Water system · PWSID CA3910004

LODI, CITY OF

LODI, CA · ~68,272 people served

Check your exact address → LODI overview

Good

PurityRadar safety score

PWSID

CA3910004

State

California

City

LODI

Population served

68,272

Primary source

Surface water

Score history

▼ 27 points — the score moved from 100 to 73 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 73

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

PFOS

Perfluorooctanesulfonic acid

5.6 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFOA

Perfluorooctanoic acid

4.1 ppt

limit 4 ppt

Above EPA limit · 1.0×

PFHxS

Perfluorohexanesulfonic acid

4 ppt

limit 10 ppt

Below EPA limit

PFBS

3.6 ppt

limit —

No federal limit

PFHxA

3.4 ppt

limit —

No federal limit

PFHpA

3.3 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Max contaminant level (MCL) · Total coliform health-based began Jan 2004 Resolved

Monitoring & reporting · Total coliform began Jul 2000 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 1998 Resolved

Monitoring & reporting · Total coliform began Feb 1997 Resolved

Max contaminant level (MCL) · Total coliform health-based began Nov 1994 Resolved

Recent enforcement actions

State action · SOX Jul 2019
State action · SFL Feb 2005
State action · SOX Feb 2004
State action · SFL Feb 2004
State action · SFL Oct 2001
State action · SFJ Aug 2001
State action · SOX Aug 2000
EPA/federal action · EOX Mar 2000

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 Mar 2020

3.02 · max 3.02 mg/l as N · 2

Arsenic

1 station · latest Mar 2020

4.4 · max 4.4 ug/l · 1

Copper

1 station · latest Mar 2020

0.68 · max 0.68 ug/l · 1

Fluoride

1 station · latest Mar 2020

0.11 · max 0.11 mg/l · 1

Lead

1 station · latest Mar 2020

0.345 · max 0.345 ug/l · 1

Uranium

1 station · latest Mar 2020

5.02 · max 5.02 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 CA3910004 — 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.