# San Fernando-city, Water Dept. — San Fernando, Ca, CA — Drinking Water Quality (2023)

> Contaminant levels for the San Fernando-city, Water Dept. — San Fernando, Ca, CA public water system from its 2023 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/san-fernando-city-water-dept-san-fernando-ca/2023
- JSON API: https://www.thewatermap.com/api/water/ca/san-fernando-city-water-dept-san-fernando-ca/2023
- Source: the utility's annual Consumer Confidence Report (CCR)
- Verification: transcribed by a model, cross-checked by a second model, approved before publishing
- Reporting year: 2023
- Contaminants measured: 22
- Contaminants with a federal limit: 6
- Contaminants at or above the federal limit: 0
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Sampling context | Federal limit | Status |
|---|---|---|---|---|---|
| Chloramine | Disinfectants | 1.6–3 mg/L (Range) | Metropolitan Water District of Southern California | No federal limit | Within the limit |
| Bromodichloromethane | Disinfection byproducts | 0.84–11 ug/L (Range) | San Fernando | No federal limit | Detected — no federal limit |
| Bromoform | Disinfection byproducts | 0.81–11 ug/L (Range) | San Fernando | No federal limit | Detected — no federal limit |
| Chloroform | Disinfection byproducts | 0.63 ug/L (Reported level) | San Fernando | No federal limit | Detected — no federal limit |
| HAA5 | Disinfection byproducts | 0–23 ug/L (Range) | San Fernando | No federal limit | Within the limit |
| TTHM | Disinfection byproducts | 5.1–49 ug/L (Range) | San Fernando | No federal limit | Within the limit |
| Fluoride | Inorganic chemicals | 0.3–0.8 mg/L (Range) | Metropolitan Water District of Southern California | 4 mg/L (MCL) | Within the limit |
| Aluminum | Metals | 0–0.15 mg/L (Range) | Metropolitan Water District of Southern California | No federal limit | Detected — no federal limit |
| Barium | Metals | 0–0.16 mg/L (Range) | Metropolitan Water District of Southern California | 2 mg/L (MCL) | Within the limit |
| Chromium, Hexavalent | Metals | 0–15 ug/L (Range) | Metropolitan Water District of Southern California | No federal limit | Detected — no federal limit |
| Chromium, Total | Metals | 3.6–5 ug/L (Range) | San Fernando | No federal limit | Within the limit |
| Copper | Metals | 0.051 mg/L (90th percentile) | At the tap | 1.3 mg/L (Action level) | Within the limit |
| Lead | Metals | 2.3 ug/L (90th percentile) | At the tap | No federal limit | Within the limit |
| Sodium | Metals | 100 mg/L (Reported level) | Metropolitan Water District of Southern California | No federal limit | Detected — no federal limit |
| Chlorine Free | Other | 0.5–2.5 mg/L (Range) | San Fernando | No federal limit | Within the limit |
| Pce | Other | 0–0.91 ug/L (Range) | San Fernando | No federal limit | Within the limit |
| Hardness | Physical & aggregate | 220–250 mg/L (Range) | San Fernando | No federal limit | Detected — no federal limit |
| TOC | Physical & aggregate | 2.1–2.6 mg/L (Range) | Metropolitan Water District of Southern California | No federal limit | Detected — no federal limit |
| Turbidity | Physical & aggregate | 0.2 NTU (Reported level) | San Fernando | No federal limit | Within the limit |
| Combined Radium | Radionuclides | 0–0.29 pCi/L (Range) | San Fernando | 5 pCi/L (MCL) | Within the limit |
| Gross Alpha | Radionuclides | 0–1.9 pCi/L (Range) | San Fernando | 15 pCi/L (MCL) | Within the limit |
| Uranium | Radionuclides | 0–3 ug/L (Range) | Metropolitan Water District of Southern California | 30 ug/L (MCL) | Within the limit |

## What these contaminants are

- **Chloramine** — A longer-lasting disinfectant made by combining chlorine with ammonia. Holds disinfection further into the pipe network, but is regulated under the same residual-disinfectant cap as chlorine.
- **Bromodichloromethane** — A trihalomethane disinfection byproduct. Counted within regulated total trihalomethanes; long-term exposure is associated with cancer and reproductive effects.
- **Bromoform** — A trihalomethane disinfection byproduct. Counted within regulated total trihalomethanes; long-term exposure is associated with liver and kidney effects.
- **Chloroform** — A trihalomethane formed when chlorine reacts with organic matter in water. A component of regulated total trihalomethanes; long-term exposure is linked to liver and kidney effects.
- **HAA5** — Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. Long-term exposure above the federal limit is associated with an increased cancer risk.
- **TTHM** — Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.
- **Fluoride** — A mineral often added to drinking water to help prevent tooth decay. Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.
- **Aluminum** — A common element sometimes used as a treatment coagulant. Regulated only as a secondary (cosmetic) standard; high levels can discolor water.
- **Barium** — A metal from erosion of natural deposits and industrial discharge. Long-term exposure above the federal limit can raise blood pressure.
- **Chromium, Hexavalent** — Hexavalent chromium ('chromium-6') — the more toxic form of chromium. A known carcinogen by inhalation; regulated nationally only within the total-chromium limit, with stricter limits in some states.
- **Chromium, Total** — Total chromium — the sum of all chromium forms, from natural deposits and industrial discharge. Long-term exposure above the federal limit can cause allergic dermatitis; includes hexavalent chromium.
- **Copper** — A metal that enters water from corroding household plumbing. Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
- **Lead** — A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.
- **Sodium** — A naturally occurring salt component. Not federally regulated for health; relevant for people on sodium-restricted diets.
- **Hardness** — A measure of dissolved calcium and magnesium minerals. Not federally regulated for health; affects scaling, soap use, and taste.
- **TOC** — Total organic carbon — a measure of organic material dissolved in the water. Not harmful itself, but it is the raw material that forms disinfection byproducts; removal is a treatment requirement.
- **Turbidity** — A measure of cloudiness from suspended particles in the water. High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.
- **Combined Radium** — Combined radium-226 and radium-228 — naturally occurring radioactive elements. Long-term exposure above the federal limit increases the risk of bone cancer.
- **Gross Alpha** — Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances. Long-term exposure above the federal limit increases cancer risk.
- **Uranium** — A naturally occurring radioactive metal from erosion of natural deposits. Long-term exposure above the federal limit can damage the kidneys and increase cancer risk.

## How to read this

- A water-quality report covers an entire service area, not a single address.
- 'Federal limit' is the EPA standard (MCL, action level, treatment technique, etc.) that the measured level is compared against.
- 'At or above the federal limit' means the utility's own reported figure met or exceeded that standard.

_Figures are the utility's own published numbers. Generated 2026-06-04 from thewatermap.com._