What was found in Ogden'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 |
|---|---|---|---|
| Barium | 629.2 µg/L 31% of the EPA limit 2000 µg/L Highest in the city: TAYLOR-WEST WEBER WID · 9,900 people · 2019 | 2/5 | SYR4 |
| Copper | 330.815 µg/L 25% of the EPA limit 1300 µg/L Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019
Highest in the city: 568.592 µg/L — TAYLOR-WEST WEBER WID · 9,900 people · 2017 | 5/5 | SYR4 |
| Nitrate | 431 µg/L 4.3% of the EPA limit 10000 µg/L Highest in the city: UINTAH HIGHLANDS IMPROVEMENT DISTRICT · 2,480 people · 2019 | 2/5 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L Highest in the city: TAYLOR-WEST WEBER WID · 9,900 people · 2019 | 2/5 | SYR4 |
| Lithium | 12 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2024
Highest in the city: 110 µg/L — TAYLOR-WEST WEBER WID · 9,900 people · 2024 | 2/5 | UCMR-5 |
| TTHM | 94.05 µg/L 118% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019 | 5/5 | SYR4 |
| Chloroform | 78.025 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019 | 5/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 44.3 µg/L 74% of the EPA limit 60 µg/L Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019 | 4/5 | SYR4 |
| Trichloroacetic Acid | 21.6 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019
Highest in the city: 24.595 µg/L — UINTAH HIGHLANDS IMPROVEMENT DISTRICT · 2,480 people · 2019 | 4/5 | SYR4 |
| Lead | 3.7136 µg/L 25% of the EPA limit 15 µg/L Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019
Highest in the city: 17.92 µg/L — WILDWOOD WATER LLC · 32 people · 2019 | 5/5 | SYR4 |
| Dichloroacetic Acid | 16.49 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019 | 4/5 | SYR4 |
| Bromodichloromethane | 13.925 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019 | 4/5 | SYR4 |
| Gross Beta Particle Activity | 10.065 pCi/L No EPA limit set Highest in the city: TAYLOR-WEST WEBER WID · 9,900 people · 2019 | 2/5 | SYR4 |
| Dibromoacetic Acid | 6.14 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019 | 1/5 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.16 pCi/L 34% of the EPA limit 15 pCi/L Highest in the city: UINTAH HIGHLANDS IMPROVEMENT DISTRICT · 2,480 people · 2019 | 2/5 | SYR4 |
| Dibromochloromethane | 3.675 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019
Highest in the city: 4.95 µg/L — WEST WARREN -WARREN IMPROVEMENT DISTRICT · 1,375 people · 2019 | 4/5 | SYR4 |
| Arsenic | 3.9 µg/L 39% of the EPA limit 10 µg/L Highest in the city: TAYLOR-WEST WEBER WID · 9,900 people · 2019 | 1/5 | SYR4 |
| Bromoform | 1.36 µg/L No EPA limit set Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2019
Highest in the city: 2.02 µg/L — WEST WARREN -WARREN IMPROVEMENT DISTRICT · 1,375 people · 2019 | 3/5 | SYR4 |
| Cyanide | 2 µg/L 1% of the EPA limit 200 µg/L Highest in the city: UINTAH HIGHLANDS IMPROVEMENT DISTRICT · 2,480 people · 2019 | 1/5 | SYR4 |
| Selenium | 0.7550 µg/L 1.5% of the EPA limit 50 µg/L Highest in the city: TAYLOR-WEST WEBER WID · 9,900 people · 2019 | 2/5 | SYR4 |
| Combined Radium (-226 And -228) | 0.3900 pCi/L 7.8% of the EPA limit 5 pCi/L Highest in the city: UINTAH HIGHLANDS IMPROVEMENT DISTRICT · 2,480 people · 2019 | 1/5 | SYR4 |
| Cadmium | 0.2000 µg/L 4% of the EPA limit 5 µg/L Highest in the city: TAYLOR-WEST WEBER WID · 9,900 people · 2019 | 1/5 | SYR4 |
| Lead | 0.0024 mg/L 16% of the EPA limit 0.0150 mg/L Main supplier: SOUTH OGDEN CITY WATER SYSTEM · 17,500 people · 2025
Highest in the city: 0.0170 mg/L — WILDWOOD WATER LLC · 32 people · 2019 | 5/5 | 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 Ogden
| Supplier | Population served |
|---|---|
| SOUTH OGDEN CITY WATER SYSTEM | 17,500 |
| TAYLOR-WEST WEBER WID | 9,900 |
| UINTAH HIGHLANDS IMPROVEMENT DISTRICT | 2,480 |
| WEST WARREN -WARREN IMPROVEMENT DISTRICT | 1,375 |
| WILDWOOD WATER LLC | 32 |
Frequently asked questions about Ogden tap water
Is Ogden tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Ogden. 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 Ogden?
5 public water suppliers report drinking-water monitoring for Ogden, Utah to the EPA. Each is listed above with its population served.
What contaminants are in Ogden's water?
The contaminants EPA monitoring detected in Ogden include Barium, Copper, Nitrate, Fluoride, Lithium. 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.