What was found in Redlands'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 | 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 | 1/1 | SYR4 |
| Nitrate | 5198 µg/L 52% of the EPA limit 10000 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | 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 | 1/1 | SYR4 |
| TTHM | 73 µg/L 91% of the EPA limit 80 µg/L Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | 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 | 1/1 | SYR4 |
| Chloroform | 44.94999999999999 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 29.44999999999999 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 26.299999999999983 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 24 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | 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 | 1/1 | SYR4 |
| Bromodichloromethane | 20.44999999999999 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | SYR4 |
| Lithium | 20 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/1 | UCMR-5 |
| Bromoform | 14.200000000000017 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | 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 | 1/1 | SYR4 |
| Monochloroacetic Acid | 11.194999999999997 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 10.089000000000002 pCi/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 10 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | 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 | 1/1 | 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 | 1/1 | SYR4 |
| Monobromoacetic Acid | 4.2499999999999964 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2019 | 1/1 | 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 | 1/1 | 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 | 1/1 | 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 | 1/1 | 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 | 1/1 | SYR4 |
| PFOS | 0.0058 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/1 | UCMR-5 |
| PFHXS | 0.0048 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/1 | UCMR-5 |
| PFOA | 0.0043 µg/L No EPA limit set Main supplier: REDLANDS CITY MUD-WATER DIV · 78,025 people · 2024 | 1/1 | 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 | 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.
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 Redlands
| Supplier | Population served |
|---|---|
| REDLANDS CITY MUD-WATER DIV | 78,025 |
Frequently asked questions about Redlands tap water
Is Redlands tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Redlands. 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 Redlands?
1 public water supplier report drinking-water monitoring for Redlands, California to the EPA. Each is listed above with its population served.
What contaminants are in Redlands's water?
The contaminants EPA monitoring detected in Redlands include Nitrate-Nitrite, Nitrate, Fluoride, TTHM, Total Haloacetic Acids (HAA5). 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.