Drinking water quality · 2023
· Verified
What's in San Joaquin County-mokelumne Acres — Stockton, Ca, CA tap water
14 contaminants were measured in the San Joaquin County-mokelumne Acres — Stockton, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2023
- Contaminants measured
- 14
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Tetrachloroethylene
- Service area
- CA
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing. | 0–15.5 ug/LRangeSystem-wide | 5 ug/LMCL | At or above the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0–3.4 mg/LRangeSystem-wide | 10 mg/LMCL | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 266 ug/L90th percentileAt the tap | None set | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0–239 ug/LRangeSystem-wide | None set | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0 ug/L90th percentileAt the tap | None set | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 3–4RangeSystem-wide | None set | Detected — no federal limit |
| Vanadium | 18.5 ug/LRangeSystem-wide | 50 ug/LNL | Detected — no federal limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.15–0.73 mg/LRangeSystem-wide | 4 mg/LMCL | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 2.56 pCi/LReported levelSystem-wide | 15 pCi/LMCL | Within the limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1.86 pCi/LReported levelSystem-wide | 20 pCi/LMCL | Detected — no federal limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 4–5 ug/LRangeSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | Not detected ug/LReported levelSystem-wide | None set | None detected |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0Highest single sampleNo. Of Detections | 0MCLG | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0Highest single sampleNo. Of Detections | 0MCLG | None detected |
People also ask about San Joaquin County-mokelumne Acres — Stockton, Ca, CA's water
+Is San Joaquin County-mokelumne Acres — Stockton, Ca, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the San Joaquin County-mokelumne Acres — Stockton, Ca, CA water utility lists 1 contaminant at or above the federal limit: Tetrachloroethylene. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in San Joaquin County-mokelumne Acres — Stockton, Ca, CA tap water?
14 contaminants were measured in San Joaquin County-mokelumne Acres — Stockton, Ca, CA's 2023 Consumer Confidence Report, spanning metals, disinfection byproducts, and microbial. 8 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in San Joaquin County-mokelumne Acres — Stockton, Ca, CA tap water?
One contaminant in San Joaquin County-mokelumne Acres — Stockton, Ca, CA's 2023 report sits at or above the federal limit: Tetrachloroethylene (3.1× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in San Joaquin County-mokelumne Acres — Stockton, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2023 report is Tetrachloroethylene, at 3.1× the federal threshold. It belongs to the vocs & pesticides family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from San Joaquin County-mokelumne Acres — Stockton, Ca, CA's 2023 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 San Joaquin County-mokelumne Acres — Stockton, Ca, 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 2023 report; a new report will replace it once the utility publishes its next annual update.