What was found in ZIP 86004
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 1400 µg/L 14% of the EPA limit 10000 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2018
Highest in the ZIP: 2440 µg/L — DONEY PARK WATER · 8,996 people · 2015 | 2/2 | SYR4 |
| Nitrate | 1500 µg/L 15% of the EPA limit 10000 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019
Highest in the ZIP: 2375 µg/L — DONEY PARK WATER · 8,996 people · 2019 | 2/2 | SYR4 |
| Barium | 709 µg/L 35% of the EPA limit 2000 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019
Highest in the ZIP: 1610 µg/L — DONEY PARK WATER · 8,996 people · 2018 | 2/2 | SYR4 |
| Chlorite | 354 µg/L 35% of the EPA limit 1000 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019 | 1/2 | SYR4 |
| Copper | 300 µg/L 23% of the EPA limit 1300 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2017 | 2/2 | SYR4 |
| Fluoride | 193 µg/L 4.8% of the EPA limit 4000 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019 | 2/2 | SYR4 |
| TTHM | 65.35 µg/L 82% of the EPA limit 80 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 55.8 µg/L 93% of the EPA limit 60 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019 | 1/2 | SYR4 |
| Selenium | 31 µg/L 62% of the EPA limit 50 µg/L Highest in the ZIP: DONEY PARK WATER · 8,996 people · 2018 | 1/2 | SYR4 |
| Lead | 4.64 µg/L 31% of the EPA limit 15 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2017
Highest in the ZIP: 7.685 µg/L — DONEY PARK WATER · 8,996 people · 2018 | 2/2 | SYR4 |
| Arsenic | 6.055 µg/L 61% of the EPA limit 10 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.61 pCi/L 17% of the EPA limit 15 pCi/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2017 | 1/2 | SYR4 |
| Chromium | 2.465 µg/L 2.5% of the EPA limit 100 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2019
Highest in the ZIP: 2.6 µg/L — DONEY PARK WATER · 8,996 people · 2018 | 2/2 | SYR4 |
| Combined Uranium | 2.574 µg/L 8.6% of the EPA limit 30 µg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2017 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.025 pCi/L 21% of the EPA limit 5 pCi/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2017
Highest in the ZIP: 1.36 pCi/L — DONEY PARK WATER · 8,996 people · 2018 | 2/2 | SYR4 |
| Trichloroethylene | 1.2 µg/L 24% of the EPA limit 5 µg/L Highest in the ZIP: DONEY PARK WATER · 8,996 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0061 µg/L No EPA limit set Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0036 mg/L 24% of the EPA limit 0.0150 mg/L Main supplier: FLAGSTAFF CITY OF · 79,796 people · 2023 | 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.
Water suppliers serving ZIP 86004
| Supplier | State | Population served |
|---|---|---|
| FLAGSTAFF CITY OF | AZ | 79,796 |
| DONEY PARK WATER | AZ | 8,996 |
Frequently asked questions about ZIP 86004 tap water
Is the tap water in ZIP 86004 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 86004. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 86004?
2 public water suppliers report EPA drinking-water monitoring for ZIP 86004. Each is listed above with its population served.
What contaminants are in ZIP 86004's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Barium, Chlorite, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.