What was found in ZIP 97741
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 | 220 µg/L 2.2% of the EPA limit 10000 µg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 people · 2019
Highest in the ZIP: 690 µg/L — MADRAS, CITY OF · 3,940 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 220 µg/L 2.2% of the EPA limit 10000 µg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 people · 2019
Highest in the ZIP: 690 µg/L — MADRAS, CITY OF · 3,940 people · 2018 | 2/2 | SYR4 |
| Fluoride | 280 µg/L 7% of the EPA limit 4000 µg/L Highest in the ZIP: MADRAS, CITY OF · 3,940 people · 2018 | 1/2 | SYR4 |
| Copper | 36.2 µg/L 2.8% of the EPA limit 1300 µg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 people · 2019
Highest in the ZIP: 48.5 µg/L — MADRAS, CITY OF · 3,940 people · 2018 | 2/2 | SYR4 |
| Lead | 1.95 µg/L 13% of the EPA limit 15 µg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 people · 2019
Highest in the ZIP: 15.36 µg/L — MADRAS, CITY OF · 3,940 people · 2018 | 2/2 | SYR4 |
| Lithium | 12 µg/L No EPA limit set Highest in the ZIP: MADRAS, CITY OF · 3,940 people · 2024 | 1/2 | UCMR-5 |
| Barium | 1.5 µg/L 0.1% of the EPA limit 2000 µg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 people · 2019
Highest in the ZIP: 10 µg/L — MADRAS, CITY OF · 3,940 people · 2018 | 2/2 | SYR4 |
| Arsenic | 2.6 µg/L 26% of the EPA limit 10 µg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 people · 2019
Highest in the ZIP: 6.975 µg/L — MADRAS, CITY OF · 3,940 people · 2018 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.1 pCi/L 21% of the EPA limit 15 pCi/L Highest in the ZIP: MADRAS, CITY OF · 3,940 people · 2018 | 1/2 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 people · 2019
Highest in the ZIP: 2 µg/L — MADRAS, CITY OF · 3,940 people · 2018 | 2/2 | SYR4 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: DESCHUTES VALLEY WATER DIST · 11,700 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 97741
| Supplier | State | Population served |
|---|---|---|
| DESCHUTES VALLEY WATER DIST | OR | 11,700 |
| MADRAS, CITY OF | OR | 3,940 |
Frequently asked questions about ZIP 97741 tap water
Is the tap water in ZIP 97741 safe to drink?
EPA testing detected 11 contaminants across the water suppliers serving ZIP 97741. 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 97741?
2 public water suppliers report EPA drinking-water monitoring for ZIP 97741. Each is listed above with its population served.
What contaminants are in ZIP 97741's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.