# Windsor, Town of — Windsor, Ca, CA — Drinking Water Quality (2023)

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

- Page: https://www.thewatermap.com/water/ca/windsor-windsor-ca/2023
- JSON API: https://www.thewatermap.com/api/water/ca/windsor-windsor-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: 12
- Contaminants with a federal limit: 2
- 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 |
|---|---|---|---|---|---|
| Bromodichloroacetic acid | Disinfection byproducts | 0.785 ug/L (Average) | System-wide | No federal limit | Detected — no federal limit |
| TTHM | Disinfection byproducts | 17 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Bromide | Inorganic chemicals | 42.3 ug/L (Average) | System-wide | No federal limit | Detected — no federal limit |
| Bromochloroacetic acid | Inorganic chemicals | 0.823 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Chlorodibromoacetic acid | Inorganic chemicals | 0.635 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Dibromoacetic acid | Inorganic chemicals | 0.854 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Dichloroacetic acid | Inorganic chemicals | 0.587 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Trichloroacetic acid | Inorganic chemicals | 0.746 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Barium | Metals | 0.03 mg/L (Average) | Nivel Promedio Detectado | 2 mg/L (MCL) | Within the limit |
| Chromium, Hexavalent | Metals | 0.41 ug/L (Average) | System-wide | No federal limit | Detected — no federal limit |
| Copper | Metals | 0.798 mg/L (90th percentile) | At the tap | 1.3 mg/L (Action level) | Within the limit |
| Lead | Metals | Not detected ug/L (90th percentile) | At the tap | No federal limit | Within the limit |

## What these contaminants are

- **Bromodichloroacetic acid** — A brominated haloacetic acid disinfection byproduct. Part of the broader HAA9 group; monitored but without its own enforceable federal limit.
- **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.
- **Bromide** — A naturally occurring salt found in source water. Not directly regulated, but a precursor that increases formation of brominated disinfection byproducts.
- **Bromochloroacetic acid** — A mixed-halogen haloacetic acid disinfection byproduct. Part of the broader HAA9 group; monitored without its own enforceable limit.
- **Chlorodibromoacetic acid** — A brominated haloacetic acid disinfection byproduct. Part of the broader HAA9 group; monitored but without its own enforceable federal limit.
- **Dibromoacetic acid** — A brominated haloacetic acid disinfection byproduct. Part of the broader HAA9 group; monitored without its own enforceable limit.
- **Dichloroacetic acid** — A haloacetic acid disinfection byproduct. One of the five haloacetic acids regulated together as HAA5 for cancer risk.
- **Trichloroacetic acid** — A haloacetic acid disinfection byproduct. One of the five haloacetic acids regulated together as HAA5.
- **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.
- **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.

## 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._