What was found in Lynwood'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 | 730000 µg/L 7300% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2012 | 1/1 | SYR4 |
| Nitrate | 2000 µg/L 20% of the EPA limit 10000 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Fluoride | 400 µg/L 10% of the EPA limit 4000 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Copper | 210 µg/L 16% of the EPA limit 1300 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Barium | 143.5 µg/L 7.2% of the EPA limit 2000 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Lithium | 49 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2025 | 1/1 | UCMR-5 |
| TTHM | 37.64 µg/L 47% of the EPA limit 80 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 13.25 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 13.21 µg/L 22% of the EPA limit 60 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Chromium | 12 µg/L 12% of the EPA limit 100 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 11.6 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Chloroform | 10.835 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 6.96 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Bromoform | 6.94 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 6.42935 µg/L 21% of the EPA limit 30 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2018 | 1/1 | SYR4 |
| Trichloroethylene | 6.24 µg/L 125% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Arsenic | 4.87 µg/L 49% of the EPA limit 10 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 4.725 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 4.255 µg/L 85% of the EPA limit 5 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 4.1 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 0.6200 µg/L 8.9% of the EPA limit 7 µg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0230 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0078 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0061 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0033 µg/L No EPA limit set Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LYNWOOD-CITY, WATER DEPT. · 66,967 people · 2024 | 1/1 | 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 Lynwood
| Supplier | Population served |
|---|---|
| LYNWOOD-CITY, WATER DEPT. | 66,967 |
Frequently asked questions about Lynwood tap water
Is Lynwood tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Lynwood. 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 Lynwood?
1 public water supplier report drinking-water monitoring for Lynwood, California to the EPA. Each is listed above with its population served.
What contaminants are in Lynwood's water?
The contaminants EPA monitoring detected in Lynwood include Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium. 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.