# Yosemite Spring Park Util Co — Coarsegold, Ca, CA — Drinking Water Quality (2023)

> Contaminant levels for the Yosemite Spring Park Util Co — Coarsegold, Ca, CA public water system from its 2023 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/yosemite-spring-park-util-co-coarsegold-ca/2023
- JSON API: https://www.thewatermap.com/api/water/ca/yosemite-spring-park-util-co-coarsegold-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: 42
- Contaminants with a federal limit: 13
- 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 |
|---|---|---|---|---|---|
| Perchlorate | Disinfection byproducts | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| TTHM | Disinfection byproducts | 31–36 ug/L (Range) | System-wide | No federal limit | Within the limit |
| Asbestos | Inorganic chemicals | Not detected MFL (Reported level) | System-wide | 7 MFL (MCL) | None detected |
| Cyanide | Inorganic chemicals | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Fluoride | Inorganic chemicals | 0–0.29 mg/L (Range) | System-wide | 4 mg/L (MCL) | Within the limit |
| Nitrate | Inorganic chemicals | 0–0.27 mg/L (Range) | System-wide | 10 mg/L (MCL) | Within the limit |
| Nitrite | Inorganic chemicals | Not detected mg/L (Range) | System-wide | 1 mg/L (MCL) | None detected |
| Aluminum | Metals | 0–0.06 mg/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Antimony | Metals | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Arsenic | Metals | 0–7.9 ug/L (Range) | System-wide | No federal limit | Within the limit |
| Barium | Metals | Not detected mg/L (Range) | System-wide | 2 mg/L (MCL) | None detected |
| Beryllium | Metals | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Cadmium | Metals | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Copper | Metals | 0.236 mg/L (90th percentile) | At the tap | 1.3 mg/L (Action level) | Within the limit |
| Lead | Metals | 0.0084 ug/L (90th percentile) | At the tap | No federal limit | Within the limit |
| Mercury | Metals | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Nickel | Metals | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Escherichia coli (E. coli) | Microbial | 0 (Highest single sample) | No. of Detections | 0 (MCLG) | None detected |
| Chlordane | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Chromium | Other | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Deha | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Dehp | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Dinoseb | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Diquat | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Edb | Other | Not detected ug/L (Reported level) | System-wide | 5000 ug/L (MCL) | None detected |
| Endothall | Other | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Endrin | Other | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Heptachlor | Other | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Heptachlor Epoxide | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Hexachlorobenzene | Other | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Hexachlorocyclopentadiene | Other | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Methoxychlor | Other | Not detected ug/L (Range) | System-wide | No federal limit | None detected |
| Oxamyl | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Pcb Total | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Tce | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Vinyl Chloride | Other | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Gross Alpha | Radionuclides | 1.67–23.5 pCi/L (Range) | System-wide | 15 pCi/L (MCL) | At or above the limit |
| Uranium | Radionuclides | 2.9–17 pCi/L (Range) | System-wide | 20 pCi/L (MCL) | Detected — no federal limit |
| Dalapon | VOCs & pesticides | Not detected ug/L (Reported level) | System-wide | 200 ug/L (MCL) | None detected |
| DBCP | VOCs & pesticides | Not detected ug/L (Reported level) | System-wide | 0.2 ug/L (MCL) | None detected |
| Toluene | VOCs & pesticides | Not detected ug/L (Reported level) | System-wide | No federal limit | None detected |
| Xylenes | VOCs & pesticides | Not detected ug/L (Range) | System-wide | 10000 ug/L (MCL) | None detected |

## What these contaminants are

- **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.
- **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.
- **Nitrite** — A compound from fertilizer runoff, sewage, and erosion of natural deposits. Like nitrate, elevated levels can cause 'blue baby syndrome' in infants.
- **Aluminum** — A common element sometimes used as a treatment coagulant. Regulated only as a secondary (cosmetic) standard; high levels can discolor water.
- **Arsenic** — A naturally occurring element that also enters water from industry and agriculture. A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.
- **Barium** — A metal from erosion of natural deposits and industrial discharge. Long-term exposure above the federal limit can raise blood pressure.
- **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.
- **Mercury** — A toxic metal from erosion of natural deposits and industrial runoff. Long-term exposure above the federal limit can damage the kidneys.
- **Nickel** — A metal from natural deposits and industrial discharge. Long-term exposure can cause skin and other effects; monitored under EPA rules.
- **Escherichia coli (E. coli)** — Escherichia coli — bacteria found in the gut of humans and animals. Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.
- **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.
- **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.
- **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 2026-06-04 from thewatermap.com._