What was found in San Andreas'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 | 92000 µg/L 920% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 223000 µg/L — CCWD - JENNY LIND · 9,861 people · 2019 | 5/8 | SYR4 |
| Nitrate | 164.98 µg/L 1.6% of the EPA limit 10000 µg/L Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 490 µg/L — CCWD - JENNY LIND · 9,861 people · 2019 | 5/8 | SYR4 |
| Fluoride | 307.49999999999994 µg/L 7.7% of the EPA limit 4000 µg/L Highest in the city: RITE OF PASSAGE/SIERRA RIDGE · 150 people · 2019 | 6/8 | SYR4 |
| Barium | 11 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 195 µg/L — CCWD - WALLACE · 255 people · 2019 | 3/8 | SYR4 |
| TTHM | 86.94999999999999 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019 | 7/8 | SYR4 |
| Chloroform | 80.94999999999999 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019 | 7/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 58.19999999999999 µg/L 97% of the EPA limit 60 µg/L Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019 | 7/8 | SYR4 |
| Dichloroacetic Acid | 26.099999999999994 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 35.75 µg/L — CCWD - COPPER COVE · 5,187 people · 2019 | 6/8 | SYR4 |
| Trichloroacetic Acid | 33.05 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019 | 6/8 | SYR4 |
| Copper | 2.5 µg/L 0.2% of the EPA limit 1300 µg/L Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 22 µg/L — CALAVERAS PUD · 6,286 people · 2019 | 2/8 | SYR4 |
| Bromoform | 8 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 14.899999999999999 µg/L — CCWD - JENNY LIND · 9,861 people · 2019 | 6/8 | SYR4 |
| Bromodichloromethane | 9 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 11.75 µg/L — CCWD - COPPER COVE · 5,187 people · 2019 | 7/8 | SYR4 |
| Monochloroacetic Acid | 5.045 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019 | 6/8 | SYR4 |
| Bromate | 3.545 µg/L 35% of the EPA limit 10 µg/L Highest in the city: CCWD - COPPER COVE · 5,187 people · 2019 | 1/8 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 3 µg/L — CCWD - JENNY LIND · 9,861 people · 2019 | 4/8 | SYR4 |
| Dibromochloromethane | 2.6499999999999995 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 3 µg/L — CCWD - JENNY LIND · 9,861 people · 2019 | 6/8 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L Highest in the city: CCWD - WEST POINT · 1,043 people · 2019 | 1/8 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2019
Highest in the city: 2 µg/L — CCWD - SHEEP RANCH · 89 people · 2019 | 6/8 | SYR4 |
| Tetrachloroethylene | 0.7800 µg/L 16% of the EPA limit 5 µg/L Highest in the city: CCWD - SHEEP RANCH · 89 people · 2019 | 1/8 | SYR4 |
| Toluene | 0.5500 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: CCWD - WEST POINT · 1,043 people · 2018 | 1/8 | SYR4 |
| Asbestos | 0.1900 MFL 2.7% of the EPA limit 7 MFL Highest in the city: CCWD - COPPER COVE · 5,187 people · 2017 | 1/8 | SYR4 |
| Lead | 0.0019 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: CCWD - EBBETTS PASS · 11,545 people · 2025
Highest in the city: 0.0040 mg/L — CCWD - WEST POINT · 1,043 people · 2024 | 8/8 | 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 San Andreas
| Supplier | Population served |
|---|---|
| CCWD - EBBETTS PASS | 11,545 |
| CCWD - JENNY LIND | 9,861 |
| CALAVERAS PUD | 6,286 |
| CCWD - COPPER COVE | 5,187 |
| CCWD - WEST POINT | 1,043 |
| CCWD - WALLACE | 255 |
| RITE OF PASSAGE/SIERRA RIDGE | 150 |
| CCWD - SHEEP RANCH | 89 |
Frequently asked questions about San Andreas tap water
Is San Andreas tap water safe to drink?
EPA testing detected 22 contaminants in the water serving San Andreas. 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 San Andreas?
8 public water suppliers report drinking-water monitoring for San Andreas, California to the EPA. Each is listed above with its population served.
What contaminants are in San Andreas's water?
The contaminants EPA monitoring detected in San Andreas 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.