What was found in Corte Madera'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 | 508000 µg/L 5080% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Fluoride | 950 µg/L 24% of the EPA limit 4000 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Nitrate | 700.27 µg/L 7% of the EPA limit 10000 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Nitrite | 400 µg/L 40% of the EPA limit 1000 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Barium | 100 µg/L 5% of the EPA limit 2000 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| TTHM | 56.095 µg/L 70% of the EPA limit 80 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Copper | 50 µg/L 3.8% of the EPA limit 1300 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Chloroform | 41.214 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 41 µg/L 68% of the EPA limit 60 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 24.51 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 15.715 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 13.676 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Chromium | 10 µg/L 10% of the EPA limit 100 µg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 5.5 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 3.74 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.45 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Bromoform | 2.225 µg/L No EPA limit set Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: MARIN MUNICIPAL WATER DISTRICT · 186,895 people · 2021 | 1/1 | LCR |
Water suppliers serving Corte Madera
| Supplier | Population served |
|---|---|
| MARIN MUNICIPAL WATER DISTRICT | 186,895 |
Frequently asked questions about Corte Madera tap water
Is Corte Madera tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Corte Madera. 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 Corte Madera?
1 public water supplier report drinking-water monitoring for Corte Madera, California to the EPA. Each is listed above with its population served.
What contaminants are in Corte Madera's water?
The contaminants EPA monitoring detected in Corte Madera include Nitrate-Nitrite, Fluoride, Nitrate, Nitrite, 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.