# Wasco, City of — Wasco, Ca, CA — Drinking Water Quality (2023)

> Contaminant levels for the Wasco, City of — Wasco, Ca, CA public water system from its 2023 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/wasco-wasco-ca/2023
- JSON API: https://www.thewatermap.com/api/water/ca/wasco-wasco-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: 10
- Contaminants with a federal limit: 2
- Contaminants at or above the federal limit: 2
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Sampling context | Federal limit | Status |
|---|---|---|---|---|---|
| Chlorine | Disinfectants | 0.2–1.76 mg/L (Range) | System-wide | No federal limit | Within the limit |
| Bromodichloromethane | Disinfection byproducts | 0–0.6 ug/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Bromoform | Disinfection byproducts | 2.2–7.4 ug/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Dibromochloromethane | Disinfection byproducts | 0.92–1.3 ug/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| TTHM | Disinfection byproducts | 3.6–7.4 ug/L (Range) | System-wide | No federal limit | Within the limit |
| Nitrate | Inorganic chemicals | 0.45–21 mg/L (Range) | System-wide | 10 mg/L (MCL) | At or above the limit |
| Chromium, Hexavalent | Metals | 3–7.8 ug/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Copper | Metals | 0.017 mg/L (90th percentile) | At the tap | 1.3 mg/L (Action level) | Within the limit |
| 1,2,3-TCP | VOCs & pesticides | 0–110 ng/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| DBCP | VOCs & pesticides | 0–340 ng/L (Range) | System-wide | No federal limit | At or above the limit |

## What these contaminants are

- **Chlorine** — A disinfectant added to drinking water to kill bacteria and viruses. Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
- **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.
- **Dibromochloromethane** — A trihalomethane disinfection byproduct. Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.
- **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.
- **Nitrate** — A compound from fertilizer runoff, septic systems, and erosion of natural deposits. Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.
- **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.
- **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.
- **DBCP** — 1,2-dibromo-3-chloropropane — a banned soil fumigant pesticide. A probable human carcinogen; long-term exposure above the federal limit can cause reproductive harm.

## 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._