What was found in La Verne'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 | 905899.9999999999 µg/L 9059% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Highest in the city: METROPOLITAN WATER DIST. OF SO. CAL. · 0 people · 2019 | 1/2 | SYR4 |
| Nitrate | 21000 µg/L 210% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Fluoride | 800 µg/L 20% of the EPA limit 4000 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019
Highest in the city: 900 µg/L — METROPOLITAN WATER DIST. OF SO. CAL. · 0 people · 2019 | 2/2 | SYR4 |
| Barium | 96.39999999999999 µg/L 4.8% of the EPA limit 2000 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019
Highest in the city: 140.15 µg/L — METROPOLITAN WATER DIST. OF SO. CAL. · 0 people · 2019 | 2/2 | SYR4 |
| TTHM | 58 µg/L 73% of the EPA limit 80 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 27.549999999999997 µg/L 46% of the EPA limit 60 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 22.25 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 20.700000000000003 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Chloroform | 19.299999999999997 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 18 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Trichloroethylene | 16 µg/L 320% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 1/2 | SYR4 |
| Bromoform | 15.944999999999999 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 11 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 8.289999999999994 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 7.777799999999998 µg/L 26% of the EPA limit 30 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2018 | 2/2 | SYR4 |
| Dibromoacetic Acid | 7.1 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| Chromium | 6.119999999999982 µg/L 6.1% of the EPA limit 100 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 6.059999999999997 pCi/L No EPA limit set Highest in the city: METROPOLITAN WATER DIST. OF SO. CAL. · 0 people · 2017 | 1/2 | SYR4 |
| Bromate | 5.4 µg/L 54% of the EPA limit 10 µg/L Highest in the city: METROPOLITAN WATER DIST. OF SO. CAL. · 0 people · 2017 | 1/2 | SYR4 |
| Arsenic | 3.36 µg/L 34% of the EPA limit 10 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019
Highest in the city: 4.8 µg/L — METROPOLITAN WATER DIST. OF SO. CAL. · 0 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 4.539999999999999 µg/L No EPA limit set Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 2/2 | SYR4 |
| 1,1-Dichloroethylene | 1.1100000000000003 µg/L 16% of the EPA limit 7 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 1/2 | SYR4 |
| Tetrachloroethylene | 0.8675 µg/L 17% of the EPA limit 5 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 1/2 | SYR4 |
| Dichloromethane | 0.7700 µg/L 15% of the EPA limit 5 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 1/2 | SYR4 |
| Toluene | 0.6000 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: METROPOLITAN WATER DIST. OF SO. CAL. · 0 people · 2019 | 1/2 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.0503 µg/L 25% of the EPA limit 0.2000 µg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0090 mg/L 60% of the EPA limit 0.0150 mg/L Main supplier: LA VERNE, CITY WD · 31,334 people · 2024 | 1/2 | 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 La Verne
| Supplier | Population served |
|---|---|
| LA VERNE, CITY WD | 31,334 |
| METROPOLITAN WATER DIST. OF SO. CAL. | 0 |
Frequently asked questions about La Verne tap water
Is La Verne tap water safe to drink?
EPA testing detected 27 contaminants in the water serving La Verne. 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 Verne?
2 public water suppliers report drinking-water monitoring for La Verne, California to the EPA. Each is listed above with its population served.
What contaminants are in La Verne's water?
The contaminants EPA monitoring detected in La Verne include Nitrate-Nitrite, Nitrate, Fluoride, Barium, 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.