What was found in Fort Huachuca'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 | 1905 µg/L 19% of the EPA limit 10000 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 1791 µg/L 18% of the EPA limit 10000 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2018 | 1/2 | SYR4 |
| Fluoride | 1330 µg/L 33% of the EPA limit 4000 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Copper | 213 µg/L 16% of the EPA limit 1300 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Barium | 135.5 µg/L 6.8% of the EPA limit 2000 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| TTHM | 18.02 µg/L 23% of the EPA limit 80 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Lithium | 13.5 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2024 | 1/2 | UCMR-5 |
| Dibromochloromethane | 6.35 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Selenium | 4.525 µg/L 9.1% of the EPA limit 50 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 4.32 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Lead | 4.275 µg/L 29% of the EPA limit 15 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Bromoform | 3.1 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.77 µg/L 4.6% of the EPA limit 60 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Chloroform | 2.35 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2 pCi/L 40% of the EPA limit 5 pCi/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2017 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2 pCi/L 13% of the EPA limit 15 pCi/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2017 | 1/2 | SYR4 |
| Arsenic | 1.755 µg/L 18% of the EPA limit 10 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Chromium | 1.385 µg/L 1.4% of the EPA limit 100 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 1.3 µg/L 4.3% of the EPA limit 30 µg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2017 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.3 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 1 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2019 | 1/2 | SYR4 |
| PFHXS | 0.0147 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2024 | 1/2 | UCMR-5 |
| PFOA | 0.0070 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2024 | 1/2 | UCMR-5 |
| PFOS | 0.0065 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0054 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0044 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2024 | 1/2 | UCMR-5 |
| Pfhpa | 0.0032 µg/L No EPA limit set Main supplier: US ARMY FORT HUACHUCA · 15,603 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: US ARMY FORT HUACHUCA · 15,603 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 Fort Huachuca
| Supplier | Population served |
|---|---|
| US ARMY FORT HUACHUCA | 15,603 |
| CS SANTA CRUZ WATER CO | 82 |
Frequently asked questions about Fort Huachuca tap water
Is Fort Huachuca tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Fort Huachuca. 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 Huachuca?
2 public water suppliers report drinking-water monitoring for Fort Huachuca, Arizona to the EPA. Each is listed above with its population served.
What contaminants are in Fort Huachuca's water?
The contaminants EPA monitoring detected in Fort Huachuca include Nitrate, Nitrate-Nitrite, Fluoride, 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.