What was found in ZIP 97058
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 | 160 µg/L 1.6% of the EPA limit 10000 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2019
Highest in the ZIP: 3378.5 µg/L — CHENOWITH PUD · 4,500 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 160 µg/L 1.6% of the EPA limit 10000 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2019
Highest in the ZIP: 1840.5 µg/L — CHENOWITH PUD · 4,500 people · 2012 | 2/2 | SYR4 |
| Fluoride | 800 µg/L 20% of the EPA limit 4000 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2019
Highest in the ZIP: 1211 µg/L — CHENOWITH PUD · 4,500 people · 2012 | 2/2 | SYR4 |
| Copper | 120 µg/L 9.2% of the EPA limit 1300 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2018
Highest in the ZIP: 202 µg/L — CHENOWITH PUD · 4,500 people · 2019 | 2/2 | SYR4 |
| Lithium | 42.1 µg/L No EPA limit set Main supplier: THE DALLES, CITY OF · 13,010 people · 2024
Highest in the ZIP: 47 µg/L — CHENOWITH PUD · 4,500 people · 2024 | 2/2 | UCMR-5 |
| Barium | 40.35 µg/L 2% of the EPA limit 2000 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2019 | 1/2 | SYR4 |
| TTHM | 30 µg/L 38% of the EPA limit 80 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28.015 µg/L 47% of the EPA limit 60 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2019 | 2/2 | SYR4 |
| Lead | 5.28 µg/L 35% of the EPA limit 15 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2019
Highest in the ZIP: 6 µg/L — CHENOWITH PUD · 4,500 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.2 pCi/L 24% of the EPA limit 5 pCi/L Highest in the ZIP: CHENOWITH PUD · 4,500 people · 2012 | 1/2 | SYR4 |
| Picloram | 0.1000 µg/L 0% of the EPA limit 500 µg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2018 | 1/2 | SYR4 |
| Lead | 0.00021 mg/L 1.4% of the EPA limit 0.0150 mg/L Main supplier: THE DALLES, CITY OF · 13,010 people · 2026
Highest in the ZIP: 0.0029 mg/L — CHENOWITH PUD · 4,500 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 97058
| Supplier | State | Population served |
|---|---|---|
| THE DALLES, CITY OF | OR | 13,010 |
| CHENOWITH PUD | OR | 4,500 |
Frequently asked questions about ZIP 97058 tap water
Is the tap water in ZIP 97058 safe to drink?
EPA testing detected 12 contaminants across the water suppliers serving ZIP 97058. 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 97058?
2 public water suppliers report EPA drinking-water monitoring for ZIP 97058. Each is listed above with its population served.
What contaminants are in ZIP 97058's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.