What was found in Logan'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 |
|---|---|---|---|
| Fluoride | 1090 µg/L 27% of the EPA limit 4000 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019 | 2/4 | SYR4 |
| Nitrate | 470 µg/L 4.7% of the EPA limit 10000 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019 | 1/4 | SYR4 |
| Nitrate-Nitrite | 459.5 µg/L 4.6% of the EPA limit 10000 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019 | 1/4 | SYR4 |
| Copper | 145.90000000000003 µg/L 11% of the EPA limit 1300 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019 | 4/4 | SYR4 |
| Barium | 61.30499999999999 µg/L 3.1% of the EPA limit 2000 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2018
Highest in the city: 89.75 µg/L — PONDEROSA ESTATES PWS · 35 people · 2018 | 3/4 | SYR4 |
| TTHM | 40.91999999999999 µg/L 51% of the EPA limit 80 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 61.3 µg/L — OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 3/4 | SYR4 |
| Lead | 49.459999999999994 µg/L 330% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019 | 3/4 | SYR4 |
| Dibromochloromethane | 17.849999999999998 µg/L No EPA limit set Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 26.069999999999997 µg/L — OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 3/4 | SYR4 |
| Bromoform | 15.809999999999999 µg/L No EPA limit set Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 22.299999999999997 µg/L — OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 2/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.645 µg/L 13% of the EPA limit 60 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 12.829999999999997 µg/L — OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 2/4 | SYR4 |
| Bromodichloromethane | 6.089999999999996 µg/L No EPA limit set Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 10.92 µg/L — OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 3/4 | SYR4 |
| Dibromoacetic Acid | 6.284999999999999 µg/L No EPA limit set Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 10.389999999999997 µg/L — OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 2/4 | SYR4 |
| Arsenic | 7.6 µg/L 76% of the EPA limit 10 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2019 | 1/4 | SYR4 |
| Chloroform | 1.67 µg/L No EPA limit set Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 7.165 µg/L — PONDEROSA ESTATES PWS · 35 people · 2019 | 3/4 | SYR4 |
| Dichloroacetic Acid | 1.9 µg/L No EPA limit set Main supplier: LOGAN, CITY OF · 6,704 people · 2019
Highest in the city: 1.9099999999999997 µg/L — OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 3/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.9 pCi/L 38% of the EPA limit 5 pCi/L Highest in the city: SCENIC HILLS ESTATES · 32 people · 2018 | 1/4 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Highest in the city: OLD STRAITSVILLE-ROCKBRIDGE · 361 people · 2019 | 1/4 | SYR4 |
| Mercury | 0.5950 µg/L 30% of the EPA limit 2 µg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2018 | 1/4 | SYR4 |
| Lead | 0.0015 mg/L 10% of the EPA limit 0.0150 mg/L Main supplier: LOGAN, CITY OF · 6,704 people · 2025
Highest in the city: 0.0080 mg/L — PONDEROSA ESTATES PWS · 35 people · 2025 | 4/4 | 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 Logan
| Supplier | Population served |
|---|---|
| LOGAN, CITY OF | 6,704 |
| OLD STRAITSVILLE-ROCKBRIDGE | 361 |
| PONDEROSA ESTATES PWS | 35 |
| SCENIC HILLS ESTATES | 32 |
Frequently asked questions about Logan tap water
Is Logan tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Logan. 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 Logan?
4 public water suppliers report drinking-water monitoring for Logan, Ohio to the EPA. Each is listed above with its population served.
What contaminants are in Logan's water?
The contaminants EPA monitoring detected in Logan include Fluoride, Nitrate, Nitrate-Nitrite, Copper, Barium. 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.