What was found in ZIP 85374
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 | 4970 µg/L 50% of the EPA limit 10000 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 4692.5 µg/L 47% of the EPA limit 10000 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019
Highest in the ZIP: 4773.5 µg/L — SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 3/3 | SYR4 |
| Fluoride | 1262.5 µg/L 32% of the EPA limit 4000 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019
Highest in the ZIP: 1537 µg/L — SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 2/3 | SYR4 |
| Copper | 278 µg/L 21% of the EPA limit 1300 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Barium | 130 µg/L 6.5% of the EPA limit 2000 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Nitrite | 100 µg/L 10% of the EPA limit 1000 µg/L Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Lithium | 95.7 µg/L No EPA limit set Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2024 | 3/3 | UCMR-5 |
| TTHM | 86.41 µg/L 108% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Chromium | 59.1 µg/L 59% of the EPA limit 100 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Lead | 49.2 µg/L 328% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28 µg/L 47% of the EPA limit 60 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Xylenes, Total | 19.44 µg/L 0.2% of the EPA limit 10000 µg/L Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Arsenic | 8.6 µg/L 86% of the EPA limit 10 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2019 | 3/3 | SYR4 |
| Ethylbenzene | 6.92 µg/L 1% of the EPA limit 700 µg/L Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 6.09 µg/L No EPA limit set Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Selenium | 5.05 µg/L 10% of the EPA limit 50 µg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2018
Highest in the ZIP: 6.055 µg/L — SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 2/3 | SYR4 |
| Bromoform | 5.6 µg/L No EPA limit set Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 4.69 pCi/L No EPA limit set Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.475 pCi/L 30% of the EPA limit 15 pCi/L Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Combined Uranium | 3.69 µg/L 12% of the EPA limit 30 µg/L Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Bromodichloromethane | 3.39 µg/L No EPA limit set Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Trichloroacetic Acid | 2.39 µg/L No EPA limit set Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.8700 pCi/L 17% of the EPA limit 5 pCi/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2017
Highest in the ZIP: 1.98 pCi/L — SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 1.4 µg/L No EPA limit set Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Chloroform | 0.9000 µg/L No EPA limit set Highest in the ZIP: SURPRISE CITY OF - MOUNTAIN VISTA · 40,007 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: EPCOR - AGUA FRIA · 127,718 people · 2024 | 3/3 | 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 85374
| Supplier | State | Population served |
|---|---|---|
| EPCOR - AGUA FRIA | AZ | 127,718 |
| SURPRISE CITY OF - MOUNTAIN VISTA | AZ | 40,007 |
| ADOC TUCSON | AZ | 4,500 |
Frequently asked questions about ZIP 85374 tap water
Is the tap water in ZIP 85374 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 85374. 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 85374?
3 public water suppliers report EPA drinking-water monitoring for ZIP 85374. Each is listed above with its population served.
What contaminants are in ZIP 85374's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.