Drinking water quality · 2023
· Verified
What's in Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA tap water
16 contaminants were measured in the Golden State Water Company - Simi Valley — Rancho Cordova, 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
- 16
- Over federal limit
- 1
- Approaching the limit
- 1
- Worst contaminant
- Nitrate
- Service area
- CA
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 13 mg/LAverageSystem-wide | 10 mg/LMCL | At or above the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| SeleniumA trace element from natural deposits and industrial discharge. | 45 ug/LAverageSystem-wide | None set | Approaching the limit |
| CopperA metal that enters water from corroding household plumbing. | 0.48 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | Not detected ug/L90th percentileAt the tap | None set | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 0.06 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| LithiumA naturally occurring element found in some groundwater. | 0.01 ug/LAverageSystem-wide | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 10 pCi/LAverageSystem-wide | 15 pCi/LMCL | Within the limit |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 8 pCi/LAverageSystem-wide | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 15 pCi/LAverageSystem-wide | 20 pCi/LMCL | Detected — no federal limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChloramineA longer-lasting disinfectant made by combining chlorine with ammonia. | 1.8 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 3.1 ug/LAverageSystem-wide | None set | Within the limit |
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 15.5 ug/LAverageSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 5.1 ug/LAverageSystem-wide | None set | Within the limit |
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | 4.1 ug/LAverageSystem-wide | None set | Detected — no federal limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing. | Not detected ug/LAverageSystem-wide | 5 ug/LMCL | Within the limit |
People also ask about Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA's water
+Is Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA water utility lists 1 contaminant at or above the federal limit: Nitrate. 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 Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA tap water?
16 contaminants were measured in Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA's 2023 Consumer Confidence Report, spanning metals, disinfection byproducts, and radionuclides. 7 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 Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA tap water?
One contaminant in Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA's 2023 report sits at or above the federal limit: Nitrate (1.3× 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 Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2023 report is Nitrate, at 1.3× the federal threshold. It belongs to the inorganic chemicals family of contaminants.
+Are any contaminants in Golden State Water Company - Simi Valley — Rancho Cordova, Ca, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: Selenium. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from Golden State Water Company - Simi Valley — Rancho Cordova, 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 Golden State Water Company - Simi Valley — Rancho Cordova, 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.