What was found in ZIP 85140
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 | 8400 µg/L 84% of the EPA limit 10000 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019
Highest in the ZIP: 10200 µg/L — EPCOR - SAN TAN · 87,435 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 8313.5 µg/L 83% of the EPA limit 10000 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019
Highest in the ZIP: 9760 µg/L — EPCOR - SAN TAN · 87,435 people · 2019 | 2/2 | SYR4 |
| Fluoride | 551 µg/L 14% of the EPA limit 4000 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019
Highest in the ZIP: 1300 µg/L — EPCOR - SAN TAN · 87,435 people · 2018 | 2/2 | SYR4 |
| Lithium | 152 µg/L No EPA limit set Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2025
Highest in the ZIP: 185 µg/L — EPCOR - SAN TAN · 87,435 people · 2025 | 2/2 | UCMR-5 |
| Copper | 178.75 µg/L 14% of the EPA limit 1300 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019 | 2/2 | SYR4 |
| Barium | 66.85 µg/L 3.3% of the EPA limit 2000 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019 | 2/2 | SYR4 |
| TTHM | 10.075 µg/L 13% of the EPA limit 80 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019
Highest in the ZIP: 11.2 µg/L — EPCOR - SAN TAN · 87,435 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 2.275 µg/L 7.6% of the EPA limit 30 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2017
Highest in the ZIP: 9.805 µg/L — EPCOR - SAN TAN · 87,435 people · 2016 | 2/2 | SYR4 |
| Selenium | 8 µg/L 16% of the EPA limit 50 µg/L Highest in the ZIP: EPCOR - SAN TAN · 87,435 people · 2018 | 1/2 | SYR4 |
| Chromium | 7.625 µg/L 7.6% of the EPA limit 100 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019 | 2/2 | SYR4 |
| Lead | 7.206 µg/L 48% of the EPA limit 15 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019
Highest in the ZIP: 7.52 µg/L — EPCOR - SAN TAN · 87,435 people · 2018 | 2/2 | SYR4 |
| Arsenic | 6.73 µg/L 67% of the EPA limit 10 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019
Highest in the ZIP: 6.8 µg/L — EPCOR - SAN TAN · 87,435 people · 2018 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.56 pCi/L 10% of the EPA limit 15 pCi/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2018
Highest in the ZIP: 6.475 pCi/L — EPCOR - SAN TAN · 87,435 people · 2016 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.36 pCi/L 27% of the EPA limit 5 pCi/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019
Highest in the ZIP: 4.875 pCi/L — EPCOR - SAN TAN · 87,435 people · 2018 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.6 µg/L 7.7% of the EPA limit 60 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7500 µg/L 13% of the EPA limit 6 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019 | 1/2 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.0120 µg/L 6% of the EPA limit 0.2000 µg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: QUEEN CREEK TOWN OF · 95,502 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.
Water suppliers serving ZIP 85140
| Supplier | State | Population served |
|---|---|---|
| QUEEN CREEK TOWN OF | AZ | 95,502 |
| EPCOR - SAN TAN | AZ | 87,435 |
Frequently asked questions about ZIP 85140 tap water
Is the tap water in ZIP 85140 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 85140. 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 85140?
2 public water suppliers report EPA drinking-water monitoring for ZIP 85140. Each is listed above with its population served.
What contaminants are in ZIP 85140's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Lithium, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.