What was found in Fort Riley'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 | 830 µg/L 21% of the EPA limit 4000 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Nitrate | 520 µg/L 5.2% of the EPA limit 10000 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| TTHM | 95.7 µg/L 120% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Barium | 47.7 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| Chloroform | 41.1 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Copper | 31.5 µg/L 2.4% of the EPA limit 1300 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| Lithium | 30.9 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 30 µg/L 50% of the EPA limit 60 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 28.4 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 23 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 16 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 12 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 8.17 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Bromoform | 6.57 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 6.08 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Chromium | 2.3 µg/L 2.3% of the EPA limit 100 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| Monobromoacetic Acid | 2.3 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2019 | 1/1 | SYR4 |
| Lead | 2.2 µg/L 15% of the EPA limit 15 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| Selenium | 1.86 µg/L 3.7% of the EPA limit 50 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| Xylenes, Total | 0.5200 µg/L 0% of the EPA limit 10000 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.3000 pCi/L 6% of the EPA limit 5 pCi/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2015 | 1/1 | SYR4 |
| Ethylbenzene | 0.2506 µg/L 0% of the EPA limit 700 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| Atrazine | 0.1390 µg/L 4.6% of the EPA limit 3 µg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2017 | 1/1 | SYR4 |
| PFOA | 0.0211 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| PFHXS | 0.0201 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0165 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0092 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| PFOS | 0.0088 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0069 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| Pfpes | 0.0044 µg/L No EPA limit set Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: FRUSI WATER TREATMENT PLANT · 35,784 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 Fort Riley
| Supplier | Population served |
|---|---|
| FRUSI WATER TREATMENT PLANT | 35,784 |
Frequently asked questions about Fort Riley tap water
Is Fort Riley tap water safe to drink?
EPA testing detected 31 contaminants in the water serving Fort Riley. 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 Fort Riley?
1 public water supplier report drinking-water monitoring for Fort Riley, Kansas to the EPA. Each is listed above with its population served.
What contaminants are in Fort Riley's water?
The contaminants EPA monitoring detected in Fort Riley include Fluoride, Nitrate, TTHM, Barium, Chloroform. 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.