What was found in La Crescenta'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 |
|---|---|---|---|
| TTHM | 82.9 µg/L 104% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Copper | 59.75 µg/L 4.6% of the EPA limit 1300 µg/L Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Lithium | 45 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | UCMR-5 |
| Dibromochloromethane | 30 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 27 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 25 µg/L 42% of the EPA limit 60 µg/L Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Chloroform | 24.55 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Bromoform | 14.9 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 10 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 9.9 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 9 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 6.225 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Lead | 5.75 µg/L 38% of the EPA limit 15 µg/L Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2019 | 1/1 | SYR4 |
| Pfhxa | 0.0080 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0080 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | UCMR-5 |
| PFBS | 0.0068 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | UCMR-5 |
| PFOA | 0.0051 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | UCMR-5 |
| PFHXS | 0.0049 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | UCMR-5 |
| Pfhpa | 0.0031 µg/L No EPA limit set Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CRESCENTA VALLEY CWD · 35,841 people · 2023 | 1/1 | LCR |
Water suppliers serving La Crescenta
| Supplier | Population served |
|---|---|
| CRESCENTA VALLEY CWD | 35,841 |
Frequently asked questions about La Crescenta tap water
Is La Crescenta tap water safe to drink?
EPA testing detected 20 contaminants in the water serving La Crescenta. 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 La Crescenta?
1 public water supplier report drinking-water monitoring for La Crescenta, California to the EPA. Each is listed above with its population served.
What contaminants are in La Crescenta's water?
The contaminants EPA monitoring detected in La Crescenta include TTHM, Copper, Lithium, Dibromochloromethane, Bromodichloromethane. 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.