What was found in ZIP 92691
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 |
|---|---|---|---|
| TTHM | 64.77 µg/L 81% of the EPA limit 80 µg/L Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 68.51 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019 | 3/3 | SYR4 |
| Lithium | 43 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2024
Highest in the ZIP: 50.1 µg/L — SANTA MARGARITA WATER DISTRICT · 168,289 people · 2025 | 3/3 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 27.225 µg/L 45% of the EPA limit 60 µg/L Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 25.64 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019 | 3/3 | SYR4 |
| Chloroform | 19.885 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 23.31 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 18.755 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 22.42 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 14.66 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 8.0155 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 12.5 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019 | 3/3 | SYR4 |
| Bromoform | 10.4 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 9.411 µg/L No EPA limit set Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 1.8 µg/L No EPA limit set Highest in the ZIP: SANTA MARGARITA WATER DISTRICT · 168,289 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0067 µg/L No EPA limit set Highest in the ZIP: EL TORO WATER DISTRICT · 51,800 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2024
Highest in the ZIP: 0.00080 mg/L — EL TORO WATER DISTRICT · 51,800 people · 2023 | 3/3 | 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 92691
| Supplier | State | Population served |
|---|---|---|
| MOULTON NIGUEL WATER DISTRICT | CA | 170,236 |
| SANTA MARGARITA WATER DISTRICT | CA | 168,289 |
| EL TORO WATER DISTRICT | CA | 51,800 |
Frequently asked questions about ZIP 92691 tap water
Is the tap water in ZIP 92691 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 92691. 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 92691?
3 public water suppliers report EPA drinking-water monitoring for ZIP 92691. Each is listed above with its population served.
What contaminants are in ZIP 92691's water?
EPA monitoring detected TTHM, Lithium, Total Haloacetic Acids (HAA5), Dibromochloromethane, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.