Drinking water quality · 2023
· Verified
What's in City of Roseville — Roseville, Ca, CA tap water
25 contaminants were measured in the City of Roseville — Roseville, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit — 2 sit at or above that limit.
- Reporting year
- 2023
- Contaminants measured
- 25
- Over federal limit
- 2
- Approaching the limit
- 0
- Worst contaminant
- TTHM
- Service area
- CA
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 35.3 mg/LAverageDistance | None set | At or above the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 23.1 mg/LAverageDistance | None set | At or above the limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.3 NTUAverageGroundwater | None set | Within the limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| AlkalinityA measure of the water's capacity to neutralize acids. | 55.8 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| Bicarbonate | 55.8 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| HardnessA measure of dissolved calcium and magnesium minerals. | 80.6 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| OdorA measure of detectable smell in the water. | 3AverageFolsom Lake | None set | Detected — no federal limit |
+By source (2)— Folsom Lake, Groundwater
| |||
| pHA measure of how acidic or basic the water is. | 8.41AverageFolsom Lake | None set | Detected — no federal limit |
+By source (2)— Folsom Lake, Groundwater
| |||
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 233AverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 0.86 mg/LAverageFolsom Lake | None set | Detected — no federal limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 194.2 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.81 mg/LAverageDistance | 4 mg/LMCL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.63 mg/LAverageDistance | 4 mg/LMCL | Within the limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.57 mg/LAverageGroundwater | 10 mg/LMCL | Within the limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| ChlorideA naturally occurring salt compound. | 40 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| SulfateA naturally occurring mineral from rock and soil. | 13AverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 64 ug/LAverageFolsom Lake | None set | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | Not detected ug/LAverageFolsom Lake | None set | Within the limit |
| CalciumA naturally occurring mineral that contributes to water hardness. | 21.6 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| GermaniumA trace metalloid found in some source water. | 0.14AverageSystem-wide | None set | Detected — no federal limit |
| LithiumA naturally occurring element found in some groundwater. | 7.3AverageSystem-wide | None set | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 6.1 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
| ManganeseA naturally occurring metal from soil and rock. | 3.9AverageSystem-wide | 300Public health goal | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 17.8 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium | 2.86AverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Folsom Lake
| |||
People also ask about City of Roseville — Roseville, Ca, CA's water
+Is City of Roseville — Roseville, Ca, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the City of Roseville — Roseville, Ca, CA water utility lists 2 contaminants at or above the federal limit: TTHM and HAA5. 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 City of Roseville — Roseville, Ca, CA tap water?
25 contaminants were measured in City of Roseville — Roseville, Ca, CA's 2023 Consumer Confidence Report, spanning physical & aggregate, metals, and inorganic chemicals. 4 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 City of Roseville — Roseville, Ca, CA tap water?
2 contaminants in City of Roseville — Roseville, Ca, CA's 2023 report sit at or above the federal limit: TTHM (441.2× the limit); HAA5 (385.0× 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 City of Roseville — Roseville, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2023 report is TTHM, at 441.2× the federal threshold. It belongs to the disinfection byproducts family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from City of Roseville — Roseville, 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 City of Roseville — Roseville, 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.