# Rancho Estates Mutual Water Co., CA — Drinking Water Quality (2023)

> Contaminant levels for the Rancho Estates Mutual Water Co., CA public water system from its 2023 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/rancho-estates-mutual-water-co/2023
- JSON API: https://www.thewatermap.com/api/water/ca/rancho-estates-mutual-water-co/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: 65
- Contaminants with a federal limit: 52
- 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 |
|---|---|---|---|---|---|
| Bromodichloromethane | Disinfection byproducts | 1.55 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Bromoform | Disinfection byproducts | 1.75 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Chloroform | Disinfection byproducts | 1.55 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Dibromochloromethane | Disinfection byproducts | 1.1 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| HAA5 | Disinfection byproducts | Not detected UG/L (Highest single sample) | Distribution | 60 UG/L (MCL) | None detected |
| Perchlorate | Disinfection byproducts | Not detected UG/L (Highest single sample) | Source water | 6 UG/L (MCL) | None detected |
| TTHM | Disinfection byproducts | 5.95 UG/L (Average) | Distribution | 80 UG/L (MCL) | Within the limit |
| Asbestos | Inorganic chemicals | Not detected MFL (Highest single sample) | Source water | 7 MFL (MCL) | None detected |
| Nitrate | Inorganic chemicals | 5.5775 MG/L (Average) | Source water | 10 MG/L (MCL) | Within the limit |
| Copper | Metals | 110 UG/L (90th percentile) | Distribution | 1300 UG/L (Al) | Within the limit |
| Lead | Metals | Not detected UG/L (Highest single sample) | Distribution | No federal limit | None detected |
| Carbofuran | Other | Not detected UG/L (Highest single sample) | Source water | 18 UG/L (MCL) | None detected |
| Carbon Tetrachloride | Other | Not detected UG/L (Highest single sample) | Source water | 0.5 UG/L (MCL) | None detected |
| Chlordane | Other | Not detected UG/L (Highest single sample) | Source water | 0.1 UG/L (MCL) | None detected |
| Chlorobenzene | Other | Not detected UG/L (Highest single sample) | Source water | 70 UG/L (MCL) | None detected |
| Cis Dichloroethylene 12 | Other | Not detected UG/L (Highest single sample) | Source water | 6 UG/L (MCL) | None detected |
| Dbaa | Other | 0.8 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Dcaa | Other | 0.8 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Deha | Other | Not detected UG/L (Highest single sample) | Source water | 400 UG/L (MCL) | None detected |
| Dehp | Other | Not detected UG/L (Highest single sample) | Source water | 4 UG/L (MCL) | None detected |
| Dichloroethane 12 | Other | Not detected UG/L (Highest single sample) | Source water | 0.5 UG/L (MCL) | None detected |
| Dichloroethylene 11 | Other | Not detected UG/L (Highest single sample) | Source water | 6 UG/L (MCL) | None detected |
| Dichloropropane 12 | Other | Not detected UG/L (Highest single sample) | Source water | 5 UG/L (MCL) | None detected |
| Dinoseb | Other | Not detected UG/L (Highest single sample) | Source water | 7 UG/L (MCL) | None detected |
| Diquat | Other | Not detected UG/L (Highest single sample) | Source water | 20 UG/L (MCL) | None detected |
| Edb | Other | Not detected UG/L (Highest single sample) | Source water | 0.05 UG/L (MCL) | None detected |
| Endothall | Other | Not detected UG/L (Highest single sample) | Source water | 100 UG/L (MCL) | None detected |
| Endrin | Other | Not detected UG/L (Highest single sample) | Source water | 2 UG/L (MCL) | None detected |
| Glyphosate | Other | Not detected UG/L (Highest single sample) | Source water | 700 UG/L (MCL) | None detected |
| Heptachlor | Other | Not detected UG/L (Highest single sample) | Source water | 0.01 UG/L (MCL) | None detected |
| Heptachlor Epoxide | Other | Not detected UG/L (Highest single sample) | Source water | 0.01 UG/L (MCL) | None detected |
| Hexachlorobenzene | Other | Not detected UG/L (Highest single sample) | Source water | 1 UG/L (MCL) | None detected |
| Hexachlorocyclopentadiene | Other | Not detected UG/L (Highest single sample) | Source water | 50 UG/L (MCL) | None detected |
| Mbaa | Other | Not detected UG/L (Highest single sample) | Distribution | No federal limit | None detected |
| Mcaa | Other | Not detected UG/L (Highest single sample) | Distribution | No federal limit | None detected |
| Methoxychlor | Other | Not detected UG/L (Highest single sample) | Source water | 30 UG/L (MCL) | None detected |
| O Dichlorobenzene | Other | Not detected UG/L (Highest single sample) | Source water | 600 UG/L (MCL) | None detected |
| Oxamyl | Other | Not detected UG/L (Highest single sample) | Source water | 50 UG/L (MCL) | None detected |
| P Dichlorobenzene | Other | Not detected UG/L (Highest single sample) | Source water | 5 UG/L (MCL) | None detected |
| Pcb Total | Other | Not detected UG/L (Highest single sample) | Source water | 0.5 UG/L (MCL) | None detected |
| Pce | Other | Not detected UG/L (Highest single sample) | Source water | 5 UG/L (MCL) | None detected |
| Pentachlorophenol | Other | Not detected UG/L (Highest single sample) | Source water | 1 UG/L (MCL) | None detected |
| Picloram | Other | Not detected UG/L (Highest single sample) | Source water | 500 UG/L (MCL) | None detected |
| Styrene | Other | Not detected UG/L (Highest single sample) | Source water | 100 UG/L (MCL) | None detected |
| Tcaa | Other | Not detected UG/L (Highest single sample) | Distribution | No federal limit | None detected |
| Tce | Other | Not detected UG/L (Highest single sample) | Source water | 5 UG/L (MCL) | None detected |
| Toxaphene | Other | Not detected UG/L (Highest single sample) | Source water | 3 UG/L (MCL) | None detected |
| Trans Dichloroethylene 12 | Other | Not detected UG/L (Highest single sample) | Source water | 10 UG/L (MCL) | None detected |
| Trichlorobenzene 124 | Other | Not detected UG/L (Highest single sample) | Source water | 5 UG/L (MCL) | None detected |
| Trichloroethane 111 | Other | Not detected UG/L (Highest single sample) | Source water | 200 UG/L (MCL) | None detected |
| Trichloroethane 112 | Other | Not detected UG/L (Highest single sample) | Source water | 5 UG/L (MCL) | None detected |
| Twofourd | Other | Not detected UG/L (Highest single sample) | Source water | 70 UG/L (MCL) | None detected |
| Vinyl Chloride | Other | Not detected UG/L (Highest single sample) | Source water | 0.5 UG/L (MCL) | None detected |
| Atrazine | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 1 UG/L (MCL) | None detected |
| Benzene | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 1 UG/L (MCL) | None detected |
| Benzo(a)pyrene | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 0.2 UG/L (MCL) | None detected |
| Chloroethane | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | No federal limit | None detected |
| Chloromethane | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | No federal limit | None detected |
| Dalapon | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 200 UG/L (MCL) | None detected |
| Dichlorodifluoromethane | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | No federal limit | None detected |
| Dichloromethane | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 5 UG/L (MCL) | None detected |
| Ethylbenzene | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 300 UG/L (MCL) | None detected |
| Simazine | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 4 UG/L (MCL) | None detected |
| Toluene | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 150 UG/L (MCL) | None detected |
| Xylenes | VOCs & pesticides | Not detected UG/L (Highest single sample) | Source water | 1750 UG/L (MCL) | None detected |

## What these contaminants are

- **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.
- **Dibromochloromethane** — A trihalomethane disinfection byproduct. Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, 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.
- **Perchlorate** — A chemical used in rocket fuel and fireworks that can also form during disinfection. Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.
- **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.
- **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.
- **Atrazine** — A widely used agricultural herbicide that reaches water through runoff. Long-term exposure above the federal limit can affect the cardiovascular and reproductive systems.
- **Chloroethane** — A volatile organic compound used in some industrial processes. Monitored under EPA rules; without its own enforceable national limit.
- **Xylenes** — A group of industrial solvents found in gasoline and paint. Long-term exposure above the federal limit can damage the nervous system.

## 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 2026-05-26 from thewatermap.com._