Drinking water quality · 2023
· Verified
What's in Dublin San Ramon Services District — Pleasanton, Ca, CA tap water
15 contaminants were measured in the Dublin San Ramon Services District — Pleasanton, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 15
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
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.
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChloramineA longer-lasting disinfectant made by combining chlorine with ammonia. | 1.6–2.5 mg/LReported levelDsrsd Distribution System | 4 mg/LMCL | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.59 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 152 ug/LAverageGroundwater | None set | Within the limit |
+By source (2)— Groundwater, Surface Water
| |||
| SeleniumA trace element from natural deposits and industrial discharge. | Not detected ug/LAverageSurface Water | None set | Within the limit |
+By source (2)— Groundwater, Surface Water
| |||
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 4.6 ug/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
| ManganeseA naturally occurring metal from soil and rock. | 0.45 ug/LAverageSystem-wide | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.3 NTUReported levelSurface Water | None set | Within the limit |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 1.1Reported levelSurface Water | 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. | 2.8 mg/LAverageGroundwater | 10 mg/LMCL | Within the limit |
+By source (2)— Groundwater, Surface Water
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | Not detected mg/LAverageSurface Water | 4 mg/LMCL | Within the limit |
+By source (3)— Dsrsd Distribution System, Groundwater, Surface Water
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 7.6 ug/LAverageSystem-wide | None set | Within the limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | Not detected ng/LAverageSurface Water | 10 ng/LMCL | Within the limit |
+By source (2)— Groundwater, Surface Water
| |||
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | Not detected ng/LAverageSurface Water | 4 ng/LMCL | Within the limit |
+By source (2)— Groundwater, Surface Water
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | Not detected pCi/LAverageSurface Water | 15 pCi/LMCL | Within the limit |
+By source (2)— Groundwater, Surface Water
| |||
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | Not detected pCi/LAverageSurface Water | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
People also ask about Dublin San Ramon Services District — Pleasanton, Ca, CA's water
+Is Dublin San Ramon Services District — Pleasanton, Ca, CA tap water safe to drink in 2023?
Every one of the 15 contaminants measured in Dublin San Ramon Services District — Pleasanton, Ca, CA's 2023 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 Dublin San Ramon Services District — Pleasanton, Ca, CA tap water?
15 contaminants were measured in Dublin San Ramon Services District — Pleasanton, Ca, CA's 2023 Consumer Confidence Report, spanning metals, inorganic chemicals, and pfas ("forever chemicals"). 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.
+Where does the data on this page come from?
Every value is transcribed from Dublin San Ramon Services District — Pleasanton, 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 Dublin San Ramon Services District — Pleasanton, 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.