What was found in Crestline'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-Nitrite | 924000 µg/L 9240% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2018 | 2/5 | SYR4 |
| Nitrate | 6554 µg/L 66% of the EPA limit 10000 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 12430 µg/L — VALLEY VIEW PARK MWC · 499 people · 2019 | 5/5 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2018
Highest in the city: 3145 µg/L — CDF - PILOT ROCK CONSERVATION CAMP · 65 people · 2018 | 5/5 | SYR4 |
| Copper | 87.4 µg/L 6.7% of the EPA limit 1300 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2018
Highest in the city: 240 µg/L — VALLEY OF ENCHANTMENT MWC · 2,471 people · 2019 | 2/5 | SYR4 |
| TTHM | 50.11 µg/L 63% of the EPA limit 80 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 68.525 µg/L — CLAWA · 2,320 people · 2019 | 5/5 | SYR4 |
| Combined Uranium | 35.76 µg/L 119% of the EPA limit, at the 95th percentile of samples — 30 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 46.7562 µg/L — CDF - PILOT ROCK CONSERVATION CAMP · 65 people · 2017 | 3/5 | SYR4 |
| Bromoform | 29.28 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 38.6 µg/L — CLAWA · 2,320 people · 2019 | 5/5 | SYR4 |
| Dibromochloromethane | 17.19 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 22.3 µg/L — CLAWA · 2,320 people · 2019 | 5/5 | SYR4 |
| Lithium | 22.2 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | UCMR-5 |
| Barium | 20 µg/L 1% of the EPA limit 2000 µg/L Highest in the city: VALLEY OF ENCHANTMENT MWC · 2,471 people · 2018 | 1/5 | SYR4 |
| Lead | 17 µg/L 113% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the city: VALLEY VIEW PARK MWC · 499 people · 2017 | 1/5 | SYR4 |
| Chloroform | 6.435 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 14.74 µg/L — CLAWA · 2,320 people · 2019 | 5/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 10.77 µg/L 18% of the EPA limit 60 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 12.075 µg/L — VALLEY OF ENCHANTMENT MWC · 2,471 people · 2019 | 4/5 | SYR4 |
| Bromodichloromethane | 6.555 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 11.36 µg/L — CLAWA · 2,320 people · 2019 | 5/5 | SYR4 |
| Dibromoacetic Acid | 9.34 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019 | 3/5 | SYR4 |
| Monochloroacetic Acid | 8.185 µg/L No EPA limit set Highest in the city: CDF - PILOT ROCK CONSERVATION CAMP · 65 people · 2018 | 2/5 | SYR4 |
| Arsenic | 6.51 µg/L 65% of the EPA limit 10 µg/L Highest in the city: VALLEY VIEW PARK MWC · 499 people · 2017 | 2/5 | SYR4 |
| Trichloroacetic Acid | 6.1 µg/L No EPA limit set Highest in the city: VALLEY OF ENCHANTMENT MWC · 2,471 people · 2019 | 1/5 | SYR4 |
| Toluene | 5.8 µg/L 0.6% of the EPA limit 1000 µg/L Highest in the city: VALLEY OF ENCHANTMENT MWC · 2,471 people · 2019 | 2/5 | SYR4 |
| Chromium | 4.4 µg/L 4.4% of the EPA limit 100 µg/L Highest in the city: CDF - PILOT ROCK CONSERVATION CAMP · 65 people · 2017 | 2/5 | SYR4 |
| Nitrite | 4.3 µg/L 0.4% of the EPA limit 1000 µg/L Highest in the city: VALLEY VIEW PARK MWC · 499 people · 2017 | 1/5 | SYR4 |
| Dichloroacetic Acid | 1.46 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 3.9 µg/L — VALLEY OF ENCHANTMENT MWC · 2,471 people · 2019 | 3/5 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019
Highest in the city: 2.18 µg/L — VALLEY OF ENCHANTMENT MWC · 2,471 people · 2019 | 3/5 | SYR4 |
| Carbon Tetrachloride | 1.27 µg/L 25% of the EPA limit 5 µg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2019 | 1/5 | SYR4 |
| PFHXS | 0.0183 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | UCMR-5 |
| PFBS | 0.0122 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2023
Highest in the city: 0.0098 mg/L — VALLEY OF ENCHANTMENT MWC · 2,471 people · 2023 | 5/5 | LCR |
| PFNA | 0.0071 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | UCMR-5 |
| PFOS | 0.0052 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | UCMR-5 |
| Pfhxa | 0.0045 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | UCMR-5 |
| PFOA | 0.0045 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | UCMR-5 |
| Pfpea | 0.0044 µg/L No EPA limit set Main supplier: CRESTLINE VILLAGE CWD - DIVISION 10 · 11,650 people · 2025 | 1/5 | 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 Crestline
| Supplier | Population served |
|---|---|
| CRESTLINE VILLAGE CWD - DIVISION 10 | 11,650 |
| VALLEY OF ENCHANTMENT MWC | 2,471 |
| CLAWA | 2,320 |
| VALLEY VIEW PARK MWC | 499 |
| CDF - PILOT ROCK CONSERVATION CAMP | 65 |
Frequently asked questions about Crestline tap water
Is Crestline tap water safe to drink?
EPA testing detected 32 contaminants in the water serving Crestline. 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 Crestline?
5 public water suppliers report drinking-water monitoring for Crestline, California to the EPA. Each is listed above with its population served.
What contaminants are in Crestline's water?
The contaminants EPA monitoring detected in Crestline include Nitrate-Nitrite, Nitrate, Fluoride, Copper, TTHM. 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.