Tap Water Quality Report
Tap water quality in LODI, California
Tap water in LODI, California receives a grade of F (47/100) from TapWaterSafety.org. It's served by LODI, CITY OF. 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. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LODI's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LODI.
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.
Recommended filters for LODI
Filters matched to the specific contaminants in LODI's water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in LODI's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. 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, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from LODI, CITY OF.