What was found in ZIP 93604
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 347 µg/L 8.7% of the EPA limit 4000 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 339.422 µg/L 1131% of the EPA limit, at the 95th percentile of samples — 30 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Lithium | 51.2 µg/L No EPA limit set Main supplier: CAL AM - BASS LAKE · 4,527 people · 2025 | 1/1 | UCMR-5 |
| TTHM | 36.8 µg/L 46% of the EPA limit 80 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Chloroform | 34 µg/L No EPA limit set Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Copper | 32.6 µg/L 2.5% of the EPA limit 1300 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Cyanide | 31 µg/L 16% of the EPA limit 200 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 31 µg/L 52% of the EPA limit 60 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 19.3 µg/L No EPA limit set Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Barium | 13.5 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 13.3 µg/L No EPA limit set Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Arsenic | 6.45 µg/L 65% of the EPA limit 10 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 4.736 pCi/L 95% of the EPA limit 5 pCi/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2015 | 1/1 | SYR4 |
| Lead | 3.27 µg/L 22% of the EPA limit 15 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 2.975 µg/L No EPA limit set Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.265 µg/L 1.3% of the EPA limit 100 µg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.1 µg/L No EPA limit set Main supplier: CAL AM - BASS LAKE · 4,527 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0075 µg/L No EPA limit set Main supplier: CAL AM - BASS LAKE · 4,527 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: CAL AM - BASS LAKE · 4,527 people · 2025 | 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.
Water suppliers serving ZIP 93604
| Supplier | State | Population served |
|---|---|---|
| CAL AM - BASS LAKE | CA | 4,527 |
Frequently asked questions about ZIP 93604 tap water
Is the tap water in ZIP 93604 safe to drink?
EPA testing detected 19 contaminants across the water suppliers serving ZIP 93604. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 93604?
1 public water supplier report EPA drinking-water monitoring for ZIP 93604. Each is listed above with its population served.
What contaminants are in ZIP 93604's water?
EPA monitoring detected Fluoride, Combined Uranium, Lithium, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.