Water Quality Report · Updated October 07, 2026
LODI, CITY OF
LODI, CITY OF delivers tap water graded F (50/100) by TapWaterSafety.org. The utility serves approximately 68,272 residents in LODI, California using surface water. The most significant water quality concerns are: PFAS contamination; Arsenic significantly above health guideline; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. For questions, the utility can be reached at 209-333-6878.
Is LODI tap water safe to drink?
LODI, CITY OF delivers tap water that earns a grade of F (50/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 68,272 residents in LODI, drawing from surface water.
Public testing data identifies 18 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Perfluorohexane sulfonate (PFHXS), Haloacetic acids (HAA5), Haloacetic acids (HAA9), Chromium (hexavalent), Total trihalomethanes (TTHMs), Trichloroacetic acid, Chloroform, Nitrate, Dichloroacetic acid, Bromodichloromethane, Uranium, 1,2-Dibromo-3-chloropropane (DBCP), Perfluorooctanoic acid (PFOA), Tetrachloroethylene (perchloroethylene), Dibromochloromethane, Dibromoacetic acid, Vanadium. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for LODI, CITY OF (system ID CA3910004) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for LODI residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for LODI, CITY OF.
PFAS contamination
Severe concernPerfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.62 ppb, 654x above the EWG health guideline of 0.004 ppb.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.369 ppt, 369x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 36.2 ppb, 362x above the EWG health guideline of 0.1 ppb.
Contact LODI, CITY OF
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for LODI
Filters matched to the specific contaminants in this water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 50/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
2.62 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 654× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.369 ppt | 0.001 | 10.0 | — | — | — | — | 369× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
8.58 ppb | 0.06 | — | — | — | — | — | 143× over |
| Chromium (hexavalent) Heavy metal |
1.74 ppb | 0.02 | — | — | — | — | — | 87× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
11.6 ppb | 0.15 | 80.0 | 100 | — | — | — | 77× over |
| Trichloroacetic acid Disinfection byproduct |
3.2 ppb | 0.1 | — | — | — | — | — | 32× over |
| Chloroform Disinfection byproduct |
10.1 ppb | 0.4 | — | — | — | — | — | 25× over |
| Nitrate Inorganic |
3.45 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 25× over |
| Dichloroacetic acid Disinfection byproduct |
3.93 ppb | 0.2 | — | — | — | — | — | 20× over |
| Bromodichloromethane Disinfection byproduct |
1.04 ppb | 0.06 | — | — | — | — | — | 17× over |
| Uranium Radiological |
3.13 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 7.3× over |
| 1,2-Dibromo-3-chloropropane (DBCP) Other |
0.00723 ppb | 0.0017 | 0.2 | — | — | — | — | 4.3× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.302 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 3.4× over |
| Tetrachloroethylene (perchloroethylene) Volatile organic compound |
0.207 ppb | 0.06 | 5.0 | — | — | — | — | 3.4× over |
| Dibromochloromethane Disinfection byproduct |
0.279 ppb | 0.1 | — | — | — | — | — | 2.8× over |
| Dibromoacetic acid Disinfection byproduct |
0.0792 ppb | 0.03 | — | — | — | — | — | 2.6× over |
| Vanadium Other |
24.3 ppb | 21.0 | — | — | — | — | — | 1.2× over |
| Chlorate Disinfection byproduct |
146.5 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.2 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | Below guideline |
| Bromoform Disinfection byproduct |
0.0524 ppb | 0.5 | — | — | — | — | — | Below guideline |
| 1,2,3-Trichloropropane Other |
6.5e-05 ppb | 0.0007 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
43.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
2.38 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Aluminum Heavy metal |
10.3 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Molybdenum Other |
0.613 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0115 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.824 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.365 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.337 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.333 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
0.127 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.000298 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.0213 ppb | — | — | — | — | — | — | Below guideline |
| Permethrin Other |
0.000889 ppb | — | — | — | — | — | — | Below guideline |
| Tebuconazole Other |
0.00467 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
LODI, CITY OF service area
This water system serves 1 community in San Joaquin County, California. Click any city for its dedicated tap water quality page.
Find the right filter for LODI water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.