What was found in Troy'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 | 1213 µg/L 30% of the EPA limit 4000 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 1978 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Nitrate | 473.25 µg/L 4.7% of the EPA limit 10000 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 2/2 | SYR4 |
| Copper | 150.5 µg/L 12% of the EPA limit 1300 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 140 µg/L 1.4% of the EPA limit 10000 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 2/2 | SYR4 |
| Barium | 70.15 µg/L 3.5% of the EPA limit 2000 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 90.27 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Nitrite | 46.8 µg/L 4.7% of the EPA limit 1000 µg/L Highest in the city: PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 1/2 | SYR4 |
| TTHM | 12.37 µg/L 15% of the EPA limit 80 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 13.3 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Lithium | 13.1 µg/L No EPA limit set Highest in the city: PIKE COUNTY WATER AUTHORITY · 12,021 people · 2024 | 1/2 | UCMR-5 |
| Chloroform | 1.3 µg/L No EPA limit set Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 6.92 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.874 µg/L 6.5% of the EPA limit 60 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 5.725 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Bromoform | 5.3 µg/L No EPA limit set Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 1/2 | SYR4 |
| Cyanide | 5.2715 µg/L 2.6% of the EPA limit 200 µg/L Highest in the city: PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 4.2 pCi/L No EPA limit set Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2012 | 1/2 | SYR4 |
| Selenium | 0.3180 µg/L 0.6% of the EPA limit 50 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 4.1205 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Chromium | 3.715 µg/L 3.7% of the EPA limit 100 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 1.6 µg/L No EPA limit set Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 3.2075 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 3.2 µg/L No EPA limit set Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 2/2 | SYR4 |
| Lead | 3.2 µg/L 21% of the EPA limit 15 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.545 pCi/L 17% of the EPA limit 15 pCi/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2016
Highest in the city: 3 pCi/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Arsenic | 0.2800 µg/L 2.8% of the EPA limit 10 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 1.654 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Antimony, Total | 0.5080 µg/L 8.5% of the EPA limit 6 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019
Highest in the city: 0.7260 µg/L — PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 2/2 | SYR4 |
| Trichloroethylene | 0.6000 µg/L 12% of the EPA limit 5 µg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 0.2760 µg/L 14% of the EPA limit 2 µg/L Highest in the city: PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 1/2 | SYR4 |
| Ethylbenzene | 0.2700 µg/L 0% of the EPA limit 700 µg/L Highest in the city: PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.2000 pCi/L 4% of the EPA limit 5 pCi/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2012 | 2/2 | SYR4 |
| Endrin | 0.1300 µg/L 6.5% of the EPA limit 2 µg/L Highest in the city: PIKE COUNTY WATER AUTHORITY · 12,021 people · 2019 | 1/2 | SYR4 |
| 6:2 Fts | 0.0084 µg/L No EPA limit set Highest in the city: PIKE COUNTY WATER AUTHORITY · 12,021 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: TROY UTILITIES, CITY OF · 23,523 people · 2025 | 2/2 | 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 Troy
| Supplier | Population served |
|---|---|
| TROY UTILITIES, CITY OF | 23,523 |
| PIKE COUNTY WATER AUTHORITY | 12,021 |
Frequently asked questions about Troy tap water
Is Troy tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Troy. 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 Troy?
2 public water suppliers report drinking-water monitoring for Troy, Alabama to the EPA. Each is listed above with its population served.
What contaminants are in Troy's water?
The contaminants EPA monitoring detected in Troy include Fluoride, Nitrate, Copper, Nitrate-Nitrite, 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.