What was found in Oakhurst'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 |
|---|---|---|---|
| Nitrate | 3220.5 µg/L 32% of the EPA limit 10000 µg/L Highest in the city: WHISPERING PINES MHP · 38 people · 2019 | 7/10 | SYR4 |
| Nitrate-Nitrite | 2345 µg/L 23% of the EPA limit 10000 µg/L Highest in the city: WHISPERING PINES MHP · 38 people · 2018 | 4/10 | SYR4 |
| Fluoride | 2300 µg/L 57% of the EPA limit 4000 µg/L Highest in the city: WHISPERING PINES MHP · 38 people · 2018 | 9/10 | SYR4 |
| Nitrite | 500 µg/L 50% of the EPA limit 1000 µg/L Highest in the city: SUGAR PINE HOMEOWNERS ASSOC · 120 people · 2017 | 1/10 | SYR4 |
| Combined Uranium | 228.715 µg/L 762% of the EPA limit, at the 95th percentile of samples — 30 µg/L Highest in the city: PIKE RANCH MUTUAL WATER CO · 74 people · 2019 | 6/10 | SYR4 |
| Copper | 139.595 µg/L 11% of the EPA limit 1300 µg/L Highest in the city: SKY ACRES MUTUAL WATER CORP · 175 people · 2019 | 5/10 | SYR4 |
| Barium | 86.3825 µg/L 4.3% of the EPA limit 2000 µg/L Highest in the city: SKY ACRES MUTUAL WATER CORP · 175 people · 2019 | 5/10 | SYR4 |
| Arsenic | 26.765 µg/L 268% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: SKY ACRES MUTUAL WATER CORP · 175 people · 2019 | 7/10 | SYR4 |
| Lead | 6.64 µg/L 44% of the EPA limit 15 µg/L Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2015
Highest in the city: 15 µg/L — BASS LAKE HEIGHTS MUTUAL WATER · 250 people · 2019 | 5/10 | SYR4 |
| TTHM | 7.75 µg/L 9.7% of the EPA limit 80 µg/L Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2019 | 2/10 | SYR4 |
| Beryllium, Total | 6.6 µg/L 165% of the EPA limit, at the 95th percentile of samples — 4 µg/L Highest in the city: ECCO · 100 people · 2019 | 1/10 | SYR4 |
| Dibromochloromethane | 2.9 µg/L No EPA limit set Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2019
Highest in the city: 2.905 µg/L — PIKE RANCH MUTUAL WATER CO · 74 people · 2019 | 2/10 | SYR4 |
| Bromodichloromethane | 2.8 µg/L No EPA limit set Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2019 | 2/10 | SYR4 |
| Chromium | 2.64 µg/L 2.6% of the EPA limit 100 µg/L Highest in the city: SKY ACRES MUTUAL WATER CORP · 175 people · 2019 | 2/10 | SYR4 |
| Chloroform | 2.425 µg/L No EPA limit set Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2019 | 2/10 | SYR4 |
| Dibromoacetic Acid | 1.2 µg/L No EPA limit set Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2019
Highest in the city: 2.3 µg/L — PIKE RANCH MUTUAL WATER CO · 74 people · 2019 | 2/10 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.2 µg/L 2% of the EPA limit 60 µg/L Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2019
Highest in the city: 2.3 µg/L — PIKE RANCH MUTUAL WATER CO · 74 people · 2019 | 2/10 | SYR4 |
| Dichloromethane | 2.1 µg/L 42% of the EPA limit 5 µg/L Highest in the city: SKY ACRES MUTUAL WATER CORP · 175 people · 2019 | 1/10 | SYR4 |
| Bromoform | 1.3175 µg/L No EPA limit set Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2019
Highest in the city: 2 µg/L — PIKE RANCH MUTUAL WATER CO · 74 people · 2019 | 2/10 | SYR4 |
| Selenium | 1.75125 µg/L 3.5% of the EPA limit 50 µg/L Highest in the city: SKY ACRES MUTUAL WATER CORP · 175 people · 2019 | 1/10 | SYR4 |
| Antimony, Total | 1.092 µg/L 18% of the EPA limit 6 µg/L Highest in the city: CEDAR VALLEY MUTUAL WATER CO · 137 people · 2019 | 1/10 | SYR4 |
| Styrene | 0.8100 µg/L 0.8% of the EPA limit 100 µg/L Highest in the city: YOSEMITE FORKS EST MUTUAL · 110 people · 2019 | 1/10 | SYR4 |
| Toluene | 0.6000 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: SKY ACRES MUTUAL WATER CORP · 175 people · 2019 | 2/10 | SYR4 |
| Mercury | 0.5500 µg/L 28% of the EPA limit 2 µg/L Highest in the city: ECCO · 100 people · 2019 | 1/10 | SYR4 |
| Lead | 0.0029 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: BROADVIEW TERRACE MUTUAL WATER COMPANY · 498 people · 2025
Highest in the city: 0.0146 mg/L — CRASS MUTUAL WATER COMPANY · 80 people · 2020 | 10/10 | LCR |
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 Oakhurst
| Supplier | Population served |
|---|---|
| BROADVIEW TERRACE MUTUAL WATER COMPANY | 498 |
| BASS LAKE HEIGHTS MUTUAL WATER | 250 |
| SKY ACRES MUTUAL WATER CORP | 175 |
| CEDAR VALLEY MUTUAL WATER CO | 137 |
| SUGAR PINE HOMEOWNERS ASSOC | 120 |
| YOSEMITE FORKS EST MUTUAL | 110 |
| ECCO | 100 |
| CRASS MUTUAL WATER COMPANY | 80 |
| PIKE RANCH MUTUAL WATER CO | 74 |
| WHISPERING PINES MHP | 38 |
Frequently asked questions about Oakhurst tap water
Is Oakhurst tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Oakhurst. 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 Oakhurst?
10 public water suppliers report drinking-water monitoring for Oakhurst, California to the EPA. Each is listed above with its population served.
What contaminants are in Oakhurst's water?
The contaminants EPA monitoring detected in Oakhurst include Nitrate, Nitrate-Nitrite, Fluoride, Nitrite, Combined Uranium. 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.