What was found in Eugene's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 8130 µg/L 81% of the EPA limit 10000 µg/L Highest in the city: KOUNTRY VILLAGE · 60 people · 2019 | 16/28 | SYR4 |
| Nitrate-Nitrite | 8130 µg/L 81% of the EPA limit 10000 µg/L Highest in the city: KOUNTRY VILLAGE · 60 people · 2019 | 10/28 | SYR4 |
| Copper | 87.5 µg/L 6.7% of the EPA limit 1300 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2018
Highest in the city: 1800 µg/L — HARWOODS MOBILE MANOR · 65 people · 2019 | 20/28 | SYR4 |
| Fluoride | 99.8 µg/L 2.5% of the EPA limit 4000 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2019
Highest in the city: 392 µg/L — EUGENE MOBILE VILLAGE · 260 people · 2019 | 6/28 | SYR4 |
| Arsenic | 1.87 µg/L 19% of the EPA limit 10 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2019
Highest in the city: 72.065 µg/L — LAKESIDE MOBILE HOME PARK · 28 people · 2019 | 10/28 | SYR4 |
| Barium | 1.949 µg/L 0.1% of the EPA limit 2000 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2019
Highest in the city: 64.3 µg/L — SAGINAW PARK WATER SYSTEM · 60 people · 2014 | 17/28 | SYR4 |
| TTHM | 38.12 µg/L 48% of the EPA limit 80 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2019
Highest in the city: 60.02 µg/L — ALDERWOOD WATER DEV CO · 34 people · 2019 | 16/28 | SYR4 |
| Total Haloacetic Acids (HAA5) | 40.365 µg/L 67% of the EPA limit 60 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2019
Highest in the city: 48.04 µg/L — ALDERWOOD WATER DEV CO · 34 people · 2019 | 6/28 | SYR4 |
| Lead | 6.182 µg/L 41% of the EPA limit 15 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2019
Highest in the city: 17.473 µg/L — ALDERWOOD WATER DEV CO · 34 people · 2019 | 22/28 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.6 pCi/L 44% of the EPA limit 15 pCi/L Highest in the city: HIDDEN MEADOWS SUBDIVISION · 40 people · 2016 | 6/28 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 4.399 µg/L 73% of the EPA limit 6 µg/L Highest in the city: WILLAMETTANS, THE · 60 people · 2019 | 3/28 | SYR4 |
| Combined Radium (-226 And -228) | 0.1900 pCi/L 3.8% of the EPA limit 5 pCi/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2017
Highest in the city: 4.24 pCi/L — GRANDVIEW MOBILE HOME PARK · 99 people · 2019 | 11/28 | SYR4 |
| Gross Beta Particle Activity | 3.8 pCi/L No EPA limit set Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2017 | 1/28 | SYR4 |
| Xylenes, Total | 2.7135 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: DIAMOND RIDGE WATER ASSOCIATION · 54 people · 2019 | 1/28 | SYR4 |
| Antimony, Total | 0.7050 µg/L 12% of the EPA limit 6 µg/L Highest in the city: TIVOLI MOBILE HOME PARK · 94 people · 2019 | 1/28 | SYR4 |
| Selenium | 0.6570 µg/L 1.3% of the EPA limit 50 µg/L Highest in the city: HIDDEN MEADOWS SUBDIVISION · 40 people · 2016 | 1/28 | SYR4 |
| Beryllium, Total | 0.6000 µg/L 15% of the EPA limit 4 µg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2019 | 1/28 | SYR4 |
| Lead | 0.0045 mg/L 30% of the EPA limit 0.0150 mg/L Main supplier: EUGENE WATER & ELECTRIC BOARD · 176,000 people · 2024
Highest in the city: 0.0259 mg/L — GRANDVIEW MOBILE HOME PARK · 99 people · 2027 | 28/28 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Eugene
Frequently asked questions about Eugene tap water
Is Eugene tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Eugene. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Eugene?
28 public water suppliers report drinking-water monitoring for Eugene, Oregon to the EPA. Each is listed above with its population served.
What contaminants are in Eugene's water?
The contaminants EPA monitoring detected in Eugene include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Arsenic. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.