What was found in Coarsegold's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 2400 µg/L 60% of the EPA limit 4000 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 4/4 | SYR4 |
| Nitrate | 2100 µg/L 21% of the EPA limit 10000 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 3/4 | SYR4 |
| Copper | 18.395 µg/L 1.4% of the EPA limit 1300 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019
Highest in the city: 1230 µg/L — THE VILLAGE · 40 people · 2019 | 3/4 | SYR4 |
| Lithium | 106 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2025 | 1/4 | UCMR-5 |
| Lead | 2.2 µg/L 15% of the EPA limit 15 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019
Highest in the city: 75 µg/L — THE VILLAGE · 40 people · 2019 | 2/4 | SYR4 |
| TTHM | 36.8 µg/L 46% of the EPA limit 80 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Combined Uranium | 20.6648 µg/L 69% of the EPA limit 30 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 1/4 | SYR4 |
| Barium | 19.3 µg/L 1% of the EPA limit 2000 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 2/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 17.6 µg/L 29% of the EPA limit 60 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Chloroform | 14 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Chromium | 13.55 µg/L 14% of the EPA limit 100 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 1/4 | SYR4 |
| Bromodichloromethane | 11.9 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Cyanide | 10.88 µg/L 5.4% of the EPA limit 200 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 9 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Arsenic | 7.09 µg/L 71% of the EPA limit 10 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 3/4 | SYR4 |
| Dichloroacetic Acid | 7.03 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Asbestos | 6.665 MFL 95% of the EPA limit 7 MFL Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 1/4 | SYR4 |
| Diquat | 5 µg/L 25% of the EPA limit 20 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 4.3 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Trichloroacetic Acid | 4.08 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Monobromoacetic Acid | 2.65 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 1/4 | SYR4 |
| Bromoform | 1.88 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2018 | 2/4 | SYR4 |
| Selenium | 1.6 µg/L 3.2% of the EPA limit 50 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 1/4 | SYR4 |
| Styrene | 1 µg/L 1% of the EPA limit 100 µg/L Highest in the city: OAK CREEK MOBILE HOME PARK · 370 people · 2016 | 1/4 | SYR4 |
| Toluene | 1 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 1/4 | SYR4 |
| Nitrite | 0.5935 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2019 | 1/4 | SYR4 |
| PFHXS | 0.0138 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2025 | 1/4 | UCMR-5 |
| PFBS | 0.0131 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2025 | 1/4 | UCMR-5 |
| Lead | 0.0084 mg/L 56% of the EPA limit 0.0150 mg/L Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2022 | 4/4 | LCR |
| PFOS | 0.0079 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2025 | 1/4 | UCMR-5 |
| PFOA | 0.0075 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2025 | 1/4 | UCMR-5 |
| Pfpea | 0.0037 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2025 | 1/4 | UCMR-5 |
| Pfhxa | 0.0033 µg/L No EPA limit set Main supplier: YOSEMITE SPRING PARK UTIL CO · 5,300 people · 2025 | 1/4 | UCMR-5 |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Coarsegold
| Supplier | Population served |
|---|---|
| YOSEMITE SPRING PARK UTIL CO | 5,300 |
| SKP PARK OF THE SIERRAS INC | 450 |
| OAK CREEK MOBILE HOME PARK | 370 |
| THE VILLAGE | 40 |
Frequently asked questions about Coarsegold tap water
Is Coarsegold tap water safe to drink?
EPA testing detected 33 contaminants in the water serving Coarsegold. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Coarsegold?
4 public water suppliers report drinking-water monitoring for Coarsegold, California to the EPA. Each is listed above with its population served.
What contaminants are in Coarsegold's water?
The contaminants EPA monitoring detected in Coarsegold include Fluoride, Nitrate, Copper, Lithium, Lead. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.