What was found in Caribou'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 | 3875 µg/L 39% of the EPA limit 10000 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2019 | 5/5 | SYR4 |
| Nitrate-Nitrite | 3450 µg/L 35% of the EPA limit 10000 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2018 | 2/5 | SYR4 |
| Fluoride | 800 µg/L 20% of the EPA limit 4000 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2019 | 1/5 | SYR4 |
| Copper | 240 µg/L 18% of the EPA limit 1300 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2018
Highest in the city: 768.5 µg/L — DEL-WOOD TRAILER PARK · 90 people · 2017 | 5/5 | SYR4 |
| Barium | 33.25 µg/L 1.7% of the EPA limit 2000 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2018
Highest in the city: 91.6 µg/L — A PLACE FOR ALL SEASONS · 90 people · 2019 | 5/5 | SYR4 |
| TTHM | 11.98 µg/L 15% of the EPA limit 80 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2019 | 1/5 | SYR4 |
| Lead | 2.31 µg/L 15% of the EPA limit 15 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2018
Highest in the city: 5.81 µg/L — A PLACE FOR ALL SEASONS · 90 people · 2019 | 5/5 | SYR4 |
| Chloroform | 4.46 µg/L No EPA limit set Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2019 | 1/5 | SYR4 |
| Bromodichloromethane | 3.94 µg/L No EPA limit set Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2019 | 1/5 | SYR4 |
| Dibromochloromethane | 3.675 µg/L No EPA limit set Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2019 | 1/5 | SYR4 |
| Chromium | 3.325 µg/L 3.3% of the EPA limit 100 µg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2018
Highest in the city: 3.45 µg/L — CARIBOU STREAM MOBILE HOME PK · 95 people · 2018 | 5/5 | SYR4 |
| Bromoform | 1.77 µg/L No EPA limit set Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2019 | 1/5 | SYR4 |
| Combined Radium (-226 And -228) | 0.2000 pCi/L 4% of the EPA limit 5 pCi/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2016
Highest in the city: 0.5940 pCi/L — CARIBOU STREAM MOBILE HOME PK · 95 people · 2015 | 2/5 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CARIBOU UTILITIES DISTRICT · 3,943 people · 2024
Highest in the city: 0.0022 mg/L — DEL-WOOD TRAILER PARK · 90 people · 2023 | 5/5 | LCR |
Water suppliers serving Caribou
| Supplier | Population served |
|---|---|
| CARIBOU UTILITIES DISTRICT | 3,943 |
| RIVERSIDE COURT | 100 |
| CARIBOU STREAM MOBILE HOME PK | 95 |
| DEL-WOOD TRAILER PARK | 90 |
| A PLACE FOR ALL SEASONS | 90 |
Frequently asked questions about Caribou tap water
Is Caribou tap water safe to drink?
EPA testing detected 14 contaminants in the water serving Caribou. 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 Caribou?
5 public water suppliers report drinking-water monitoring for Caribou, Maine to the EPA. Each is listed above with its population served.
What contaminants are in Caribou's water?
The contaminants EPA monitoring detected in Caribou include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.