# Sleepy Valley Water Company — Santa Clarita, Ca, CA — Drinking Water Quality (2021)

> Contaminant levels for the Sleepy Valley Water Company — Santa Clarita, Ca, CA public water system from its 2021 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/sleepy-valley-water-company-santa-clarita-ca/2021
- JSON API: https://www.thewatermap.com/api/water/ca/sleepy-valley-water-company-santa-clarita-ca/2021
- 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: 2021
- Contaminants measured: 12
- Contaminants with a federal limit: 7
- Contaminants at or above the federal limit: 1
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Sampling context | Federal limit | Status |
|---|---|---|---|---|---|
| HAA5 | Disinfection byproducts | 5 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Fluoride | Inorganic chemicals | 0.3 mg/L (Average) | System-wide | 4 mg/L (MCL) | Within the limit |
| Nitrate | Inorganic chemicals | 10.2 mg/L (Average) | System-wide | 10 mg/L (MCL) | At or above the limit |
| Barium | Metals | Not detected mg/L (Average) | System-wide | 2 mg/L (MCLG) | Within the limit |
| Boron | Metals | 0.2 mg/L (Average) | System-wide | 1 mg/L (NL) | Detected — no federal limit |
| Copper | Metals | 0.15 mg/L (90th percentile) | At the tap | No federal limit | Within the limit |
| Selenium | Metals | 5 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Chromium | Other | 20 ug/L (Average) | System-wide | No federal limit | Within the limit |
| Deha | Other | Not detected ug/L (Average) | System-wide | No federal limit | None detected |
| Nitrate Nitrite | Other | 9.1 mg/L (Average) | System-wide | 10 mg/L (MCL) | Approaching the limit |
| Gross Alpha | Radionuclides | 5.24 pCi/L (Average) | System-wide | 15 pCi/L (MCL) | Within the limit |
| Uranium | Radionuclides | 5 pCi/L (Average) | System-wide | 20 pCi/L (MCL) | Detected — no federal limit |

## What these contaminants are

- **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.
- **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.
- **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.
- **Barium** — A metal from erosion of natural deposits and industrial discharge. Long-term exposure above the federal limit can raise blood pressure.
- **Boron** — A naturally occurring element from rock and soil. No enforceable federal limit; the EPA has issued a health advisory level.
- **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.
- **Selenium** — A trace element from natural deposits and industrial discharge. Essential in tiny amounts, but long-term exposure above the federal limit can cause hair and fingernail loss and circulatory problems.
- **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._