What was found in ZIP 92373
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 |
|---|---|---|---|
| Nitrate-Nitrite | 993000 µg/L 9930% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2018 | 3/3 | SYR4 |
| Nitrate | 5198 µg/L 52% of the EPA limit 10000 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019
Highest in the ZIP: 9040 µg/L — LOMA LINDA, CITY OF · 25,129 people · 2019 | 3/3 | SYR4 |
| Fluoride | 1195.0000000000002 µg/L 30% of the EPA limit 4000 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019
Highest in the ZIP: 2600 µg/L — LOMA LINDA, CITY OF · 25,129 people · 2019 | 3/3 | SYR4 |
| TTHM | 73 µg/L 91% of the EPA limit 80 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019
Highest in the ZIP: 83.08999999999999 µg/L — WESTERN HEIGHTS WATER COMPANY · 7,705 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 56.45000000000002 µg/L 94% of the EPA limit 60 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 2/3 | SYR4 |
| Chloroform | 44.94999999999999 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 29.44999999999999 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019
Highest in the ZIP: 30.10999999999998 µg/L — WESTERN HEIGHTS WATER COMPANY · 7,705 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 26.299999999999983 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 24 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 2/3 | SYR4 |
| Combined Uranium | 23.9741 µg/L 80% of the EPA limit 30 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 20.44999999999999 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019
Highest in the ZIP: 23.75 µg/L — WESTERN HEIGHTS WATER COMPANY · 7,705 people · 2019 | 3/3 | SYR4 |
| Arsenic | 6.27 µg/L 63% of the EPA limit 10 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019
Highest in the ZIP: 20 µg/L — LOMA LINDA, CITY OF · 25,129 people · 2019 | 2/3 | SYR4 |
| Lithium | 20 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/3 | UCMR-5 |
| Bromoform | 14.200000000000017 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 3/3 | SYR4 |
| Trichloroethylene | 14 µg/L 280% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the ZIP: LOMA LINDA, CITY OF · 25,129 people · 2019 | 1/3 | SYR4 |
| Chromium | 13.35 µg/L 13% of the EPA limit 100 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 11.194999999999997 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 10.089000000000002 pCi/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 10 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 2/3 | SYR4 |
| Lead | 5.4 µg/L 36% of the EPA limit 15 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 4.2499999999999964 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| Mercury | 1.5 µg/L 75% of the EPA limit 2 µg/L Highest in the ZIP: LOMA LINDA, CITY OF · 25,129 people · 2019 | 1/3 | SYR4 |
| Styrene | 0.9875 µg/L 1% of the EPA limit 100 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| 1,1-Dichloroethylene | 0.7725 µg/L 11% of the EPA limit 7 µg/L Highest in the ZIP: LOMA LINDA, CITY OF · 25,129 people · 2019 | 1/3 | SYR4 |
| Dichloromethane | 0.6095 µg/L 12% of the EPA limit 5 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.0250 µg/L 13% of the EPA limit 0.2000 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019
Highest in the ZIP: 0.2910 µg/L — LOMA LINDA, CITY OF · 25,129 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.0799 pCi/L 1.6% of the EPA limit 5 pCi/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/3 | SYR4 |
| PFOS | 0.0058 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/3 | UCMR-5 |
| PFHXS | 0.0048 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/3 | UCMR-5 |
| PFOA | 0.0043 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0029 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 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 92373
| Supplier | State | Population served |
|---|---|---|
| REDLANDS CITY MUD-WATER DIV | CA | 78,025 |
| LOMA LINDA, CITY OF | CA | 25,129 |
| WESTERN HEIGHTS WATER COMPANY | CA | 7,705 |
Frequently asked questions about ZIP 92373 tap water
Is the tap water in ZIP 92373 safe to drink?
EPA testing detected 31 contaminants across the water suppliers serving ZIP 92373. 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 92373?
3 public water suppliers report EPA drinking-water monitoring for ZIP 92373. Each is listed above with its population served.
What contaminants are in ZIP 92373's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.