Drinking water quality · 2024
What's in Tracy, CA tap water
53 contaminants were measured in the Tracy, CA water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 53
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
state-level CCR
Where your water comes from · EPA SDWIS
Tracy, CA's drinking water comes from ground water, drawn from 10 sources.
Source
10ground water
- PRODUCTION · 8
- WELL 04R - NEW LINCOLN PARK WELL
- DMC - RAW
Treatment
9treatment plants
- PRODUCTION WELL 01 - TREATED
- PRODUCTION WELL 05 - TREATED
- PRODUCTION WELL 06 - TREATED
- + 6 more
Distribution
0storage units
Also buys water from SOUTH SAN JOAQUIN IRRIGATION DISTRICT.
Source: EPA SDWIS facilities inventory. Methodology.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Treatment technique violationHealth-based1 violation on record · most recent May 1997resolved
- Maximum contaminant level exceededHealth-based1 violation on record · most recent Sep 1992resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.73 NTUAverageSystem-wide | 1 NTUMCL | Within the limit |
| ColorA measure of visible tint in the water. | 2.67AverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
| HardnessA measure of dissolved calcium and magnesium minerals. | 264 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| OdorA measure of detectable smell in the water. | 0.11AverageSystem-wide | None set | Detected — no federal limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 1039 uS/cmAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 668 mg/LAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 40 ug/LRunning annual avgSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 21 ug/LRunning annual avgSystem-wide | None set | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.396 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 0.6 ug/LAverageSystem-wide | None set | Within the limit |
+By source (2)— South San Joaquin Irrigation District, John Jones Water Treatment Plant
| |||
| Chromium, TotalTotal chromium — the sum of all chromium forms, from natural deposits and industrial discharge. | 1.11 ug/LAverageSystem-wide | None set | Within the limit |
+By source (2)— South San Joaquin Irrigation District, John Jones Water Treatment Plant
| |||
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.0 mg/L90th percentileAt the tap | 0.015 mg/LAction level | None detected |
| BoronA naturally occurring element from rock and soil. | 1.6 mg/LAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
| IronA naturally occurring metal common in groundwater. | 45 ug/LAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— South San Joaquin Irrigation District, John Jones Water Treatment Plant
| |||
| LithiumA naturally occurring element found in some groundwater. | 8Running annual avgSystem-wide | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 13 ug/LAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
| SodiumA naturally occurring salt component. | 119 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 2 mg/LAverageSystem-wide | 10 mg/LMCL | Within the limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.11 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
+By source (2)— South San Joaquin Irrigation District, John Jones Water Treatment Plant
| |||
| ChlorideA naturally occurring salt compound. | 114 mg/LAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
| SulfateA naturally occurring mineral from rock and soil. | 221 mg/LAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— John Jones Water Treatment Plant, South San Joaquin Irrigation District
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium | 3.55 ug/LAverageSystem-wide | None set | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0.33 pCi/LAverageSystem-wide | 15 pCi/LMCL | Within the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | Not detectedRunning annual avgSystem-wide | None set | None detected |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid, a chlorinated PFAS compound. | Not detectedRangeSystem-wide | None set | None detected |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)ADONA, a newer-generation PFAS replacement compound. | Not detectedRangeSystem-wide | None set | None detected |
| 4:2 Fluorotelomer sulfonic acid (4:2 FTS)4:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detectedRunning annual avgSystem-wide | None set | None detected |
| 6:2 Fluorotelomer sulfonic acid (6:2 FTS)6:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detectedRangeSystem-wide | None set | None detected |
| 8:2 Fluorotelomer sulfonic acid (8:2 FTS)8:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detectedRunning annual avgSystem-wide | None set | None detected |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid, a chlorinated PFAS compound. | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | Not detected ng/LRunning annual avgSystem-wide | None set | None detected |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)N-ethyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | Not detectedRangeSystem-wide | None set | None detected |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)N-methyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | Not detectedRangeSystem-wide | None set | None detected |
| Nonafluoro-3,6-dioxaheptanoic acidNonafluoro-3,6-dioxaheptanoic acid, a PFAS-related compound. | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluoro-3-methoxypropanoic acid (PFMPA)Perfluoro-3-methoxypropanoic acid, a PFAS-related compound. | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluoro-4-methoxybutanoic acid (PFMBA)Perfluoro-4-methoxybutanoic acid, a PFAS-related compound. | Not detectedRangeSystem-wide | None set | None detected |
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)Perfluoro(2-ethoxyethane)sulfonic acid, a PFAS-related compound. | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' | Not detectedRangeSystem-wide | None set | None detected |
| Perfluorodecanoic acid (PFDA)Perfluorodecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluorododecanoic acid (PFDoA)Perfluorododecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluoroheptanesulfonic acid (PFHpS)Perfluoroheptanesulfonic acid, a PFAS 'forever chemical.' | Not detectedRangeSystem-wide | None set | None detected |
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | Not detected ng/LRunning annual avgSystem-wide | None set | None detected |
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | Not detected ng/LRunning annual avgSystem-wide | None set | None detected |
| Perfluoropentanesulfonic acid (PFPeS)Perfluoropentanesulfonic acid, a PFAS 'forever chemical.' | Not detectedRangeSystem-wide | None set | None detected |
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detectedRangeSystem-wide | None set | None detected |
| Perfluorotetradecanoic acid (PFTeDA)Perfluorotetradecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedRunning annual avgSystem-wide | None set | None detected |
| Perfluorotridecanoic acid (PFTrDA)Perfluorotridecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedRangeSystem-wide | None set | None detected |
| Perfluoroundecanoic acid (PFUnA)Perfluoroundecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedRunning annual avgSystem-wide | None set | None detected |
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detectedRunning annual avgSystem-wide | None set | None detected |
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | Not detected ng/LRunning annual avgSystem-wide | None set | None detected |
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | Not detected ng/LRunning annual avgSystem-wide | None set | None detected |
Source: Tracy, CA's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
People also ask about Tracy, CA's water
+Is Tracy, CA tap water safe to drink in 2024?
Every one of the 53 contaminants measured in Tracy, CA's 2024 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Tracy, CA tap water?
53 contaminants were measured in Tracy, CA's 2024 Consumer Confidence Report, spanning pfas ("forever chemicals"), metals, and physical & aggregate. 6 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Tracy, CA's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Tracy, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.
More water systems in CA
Buehner Water SystemDynatect Ro-lab, Inc.Fc Tracy Holdings, LlcBuehner HousesCarmelo Industrial ParkChargin-sossamon Water SystemCurrier Estates Water CorpGlassfab Tempering Services Inc.Jefferson Esd-jefferson SchoolLodi HomesMaze Blvd Mobilehome ParkMusco Family Olive CoNew Jerusalem SchoolSan Joaquin River Club IncSan-i-pak IncTracy Matrl Recvry/sld Waste WsVacaville Seventh Day Adventist ChurchValpico Industrial ParkWestern Pallet Supply & LogisticsLa Torres ParkNorthwest Pipe CompanyOwens-brockway Glass Container Inc132 Investments Water SystemCity of LathropAll water systems →