Drinking water quality · 2023
What's in Uc - Davis — Davis, Ca, CA tap water
18 contaminants were measured in the Uc - Davis — Davis, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 18
- 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.
- Maximum contaminant level exceededHealth-based3 violations on record · most recent Jan 2010resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 4.6 ug/LAverageUC Davis Groundwater | None set | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
| CopperA metal that enters water from corroding household plumbing. | 0.15 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | Not detected mg/LAverageUC Davis Groundwater | 2 mg/LMCL | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
| 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 |
| SeleniumA trace element from natural deposits and industrial discharge. | Not detected ug/LAverageUC Davis Groundwater | None set | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
| AluminumA common element sometimes used as a treatment coagulant. | Not detected mg/LAverageUC Davis Groundwater | None set | Detected — no federal limit |
+By source (2)— WDCWA Surface Water, UC Davis Groundwater
| |||
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.75 mg/LAverageSystem-wide | 4 mg/LMCL | Within the 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. | 14 ug/LAverageSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 6 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. | 0.752 pCi/LAverageWDCWA Surface Water | 15 pCi/LMCL | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected pCi/LAverageUC Davis Groundwater | 5 pCi/LMCL | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 8.95 pCi/LAverageWDCWA Surface Water | None set | Detected — no federal limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | Not detected pCi/LAverageUC Davis Groundwater | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium | 4.9 ug/LAverageUC Davis Groundwater | None set | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.13 mg/LAverageUC Davis Groundwater | 4 mg/LMCL | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.28 mg/LAverageUC Davis Groundwater | 10 mg/LMCL | Within the limit |
+By source (2)— UC Davis Groundwater, WDCWA Surface Water
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0.1 %AverageSystem-wide | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 2 mg/LAverageWDCWA Surface Water | None set | Detected — no federal limit |
+By source (2)— WDCWA Surface Water, UC Davis Groundwater
| |||
People also ask about Uc - Davis — Davis, Ca, CA's water
+Is Uc - Davis — Davis, Ca, CA tap water safe to drink in 2023?
Every one of the 18 contaminants measured in Uc - Davis — Davis, 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 Uc - Davis — Davis, Ca, CA tap water?
18 contaminants were measured in Uc - Davis — Davis, Ca, CA's 2023 Consumer Confidence Report, spanning metals, radionuclides, and disinfection byproducts. 9 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 Uc - Davis — Davis, 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 Uc - Davis — Davis, 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.