What was found in Orono'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 | 170 µg/L 1.7% of the EPA limit 10000 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019
Highest in the city: 6600 µg/L — HAVASU PINES MHP · 75 people · 2019 | 4/4 | SYR4 |
| Nitrate-Nitrite | 169 µg/L 1.7% of the EPA limit 10000 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2018
Highest in the city: 5405 µg/L — HAVASU PINES MHP · 75 people · 2018 | 4/4 | SYR4 |
| Fluoride | 700 µg/L 18% of the EPA limit 4000 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 3/4 | SYR4 |
| Copper | 169 µg/L 13% of the EPA limit 1300 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019
Highest in the city: 404 µg/L — HAVASU PINES MHP · 75 people · 2018 | 4/4 | SYR4 |
| TTHM | 81.925 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 1/4 | SYR4 |
| Chloroform | 78.75 µg/L No EPA limit set Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 50 µg/L 83% of the EPA limit 60 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 1/4 | SYR4 |
| Trichloroacetic Acid | 31.45 µg/L No EPA limit set Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 1/4 | SYR4 |
| Dichloroacetic Acid | 26 µg/L No EPA limit set Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 1/4 | SYR4 |
| Barium | 22.9 µg/L 1.1% of the EPA limit 2000 µg/L Highest in the city: HAVASU PINES MHP #1 · 65 people · 2018 | 3/4 | SYR4 |
| Lead | 8.78 µg/L 59% of the EPA limit 15 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019
Highest in the city: 11.8 µg/L — HAVASU PINES MHP · 75 people · 2018 | 3/4 | SYR4 |
| Arsenic | 0.7700 µg/L 7.7% of the EPA limit 10 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2018
Highest in the city: 5.34 µg/L — STILLWATER MOBILE HOME PARK · 70 people · 2018 | 3/4 | SYR4 |
| Bromodichloromethane | 5.06 µg/L No EPA limit set Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 1/4 | SYR4 |
| Chromium | 0.8755 µg/L 0.9% of the EPA limit 100 µg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2018
Highest in the city: 4 µg/L — HAVASU PINES MHP #1 · 65 people · 2018 | 4/4 | SYR4 |
| Combined Uranium | 2.89 µg/L 9.6% of the EPA limit 30 µg/L Highest in the city: STILLWATER MOBILE HOME PARK · 70 people · 2018 | 2/4 | SYR4 |
| Monochloroacetic Acid | 2.86 µg/L No EPA limit set Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2019 | 1/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.38 pCi/L 9.2% of the EPA limit 15 pCi/L Highest in the city: STILLWATER MOBILE HOME PARK · 70 people · 2017 | 1/4 | SYR4 |
| Antimony, Total | 0.6100 µg/L 10% of the EPA limit 6 µg/L Highest in the city: STILLWATER MOBILE HOME PARK · 70 people · 2018 | 1/4 | SYR4 |
| Toluene | 0.5900 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: HAVASU PINES MHP #1 · 65 people · 2018 | 1/4 | SYR4 |
| Mercury | 0.1200 µg/L 6% of the EPA limit 2 µg/L Highest in the city: STILLWATER MOBILE HOME PARK · 70 people · 2018 | 1/4 | SYR4 |
| Lead | 0.0100 mg/L 67% of the EPA limit 0.0150 mg/L Main supplier: ORONO-VEAZIE WATER DISTRICT · 5,793 people · 2025 | 4/4 | 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 Orono
| Supplier | Population served |
|---|---|
| ORONO-VEAZIE WATER DISTRICT | 5,793 |
| HAVASU PINES MHP | 75 |
| STILLWATER MOBILE HOME PARK | 70 |
| HAVASU PINES MHP #1 | 65 |
Frequently asked questions about Orono tap water
Is Orono tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Orono. 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 Orono?
4 public water suppliers report drinking-water monitoring for Orono, Maine to the EPA. Each is listed above with its population served.
What contaminants are in Orono's water?
The contaminants EPA monitoring detected in Orono include Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM. 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.