What was found in ZIP 97140
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 3500 µg/L 35% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Nitrate | 3400 µg/L 34% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Copper | 941 µg/L 72% of the EPA limit 1300 µg/L | 2/2 | SYR4 |
| Lead | 648 µg/L 4320% of the EPA limit, in the worst sample — 15 µg/L | 2/2 | SYR4 |
| Nitrite | 170 µg/L 17% of the EPA limit 1000 µg/L | 1/2 | SYR4 |
| TTHM | 58 µg/L 73% of the EPA limit 80 µg/L | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 57.3 µg/L 96% of the EPA limit 60 µg/L | 2/2 | SYR4 |
| Barium | 4.82 µg/L 0.2% of the EPA limit 2000 µg/L | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.7 µg/L 28% of the EPA limit 6 µg/L | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.11 pCi/L 22% of the EPA limit 5 pCi/L | 1/2 | SYR4 |
| 6:2 Fts | 0.0413 µg/L No EPA limit set | 1/2 | UCMR-5 |
| 8:2 Fts | 0.0080 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 97140
| Supplier | State | Population served |
|---|---|---|
| TIGARD, CITY OF | OR | 62,500 |
| SHERWOOD, CITY OF | OR | 19,885 |
Frequently asked questions about ZIP 97140 tap water
Is the tap water in ZIP 97140 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 97140. 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 97140?
2 public water suppliers report EPA drinking-water monitoring for ZIP 97140. Each is listed above with its population served.
What contaminants are in ZIP 97140's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Copper, Lead, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.