What was found in Topsham'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 | 2137.5 µg/L 21% of the EPA limit 10000 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2019
Highest in the city: 5180 µg/L — HAPPY TRAILS MHP · 33 people · 2019 | 4/5 | SYR4 |
| Nitrate-Nitrite | 1286 µg/L 13% of the EPA limit 10000 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2017 | 4/5 | SYR4 |
| Fluoride | 726.5 µg/L 18% of the EPA limit 4000 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2019
Highest in the city: 1263 µg/L — HAPPY TRAILS MHP · 33 people · 2018 | 5/5 | SYR4 |
| Copper | 479 µg/L 37% of the EPA limit 1300 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2018
Highest in the city: 945 µg/L — HAPPY TRAILS MHP · 33 people · 2019 | 5/5 | SYR4 |
| Toluene | 447.45 µg/L 45% of the EPA limit 1000 µg/L Highest in the city: HAPPY TRAILS MHP · 33 people · 2019 | 1/5 | SYR4 |
| TTHM | 84 µg/L 105% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2019 | 3/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 61.8 µg/L 103% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2019 | 2/5 | SYR4 |
| Chloroform | 59.2 µg/L No EPA limit set Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2016 | 1/5 | SYR4 |
| Trichloroacetic Acid | 36.9 µg/L No EPA limit set Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2016 | 1/5 | SYR4 |
| Lead | 1.47 µg/L 9.8% of the EPA limit 15 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2018
Highest in the city: 24.25 µg/L — HAPPY TRAILS MHP · 33 people · 2019 | 5/5 | SYR4 |
| Barium | 6.855 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2017
Highest in the city: 23.95 µg/L — MEADOWVIEW APARTMENTS · 40 people · 2018 | 5/5 | SYR4 |
| Dichloroacetic Acid | 22.6 µg/L No EPA limit set Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2016 | 1/5 | SYR4 |
| Combined Uranium | 1.19 µg/L 4% of the EPA limit 30 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2017
Highest in the city: 15.85 µg/L — HAPPY TRAILS MHP · 33 people · 2019 | 3/5 | SYR4 |
| Bromodichloromethane | 15.65 µg/L No EPA limit set Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2016 | 1/5 | SYR4 |
| Lithium | 11 µg/L No EPA limit set Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2023 | 1/5 | UCMR-5 |
| Gross Alpha, Excl. Radon And U | 9 pCi/L 60% of the EPA limit 15 pCi/L Highest in the city: HAPPY TRAILS MHP · 33 people · 2019 | 2/5 | SYR4 |
| Arsenic | 2.9 µg/L 29% of the EPA limit 10 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2017
Highest in the city: 4.88 µg/L — HAPPY TRAILS MHP · 33 people · 2018 | 4/5 | SYR4 |
| Dibromochloromethane | 4.08 µg/L No EPA limit set Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2016 | 2/5 | SYR4 |
| Bromoform | 3.955 µg/L No EPA limit set Highest in the city: TOPSHAM MOBILE HOME PARK INC · 243 people · 2019 | 1/5 | SYR4 |
| Chromium | 1.96 µg/L 2% of the EPA limit 100 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2017
Highest in the city: 2.14 µg/L — HAPPY TRAILS MHP · 33 people · 2018 | 5/5 | SYR4 |
| Combined Radium (-226 And -228) | 1.9765 pCi/L 40% of the EPA limit 5 pCi/L Highest in the city: HAPPY TRAILS MHP · 33 people · 2019 | 2/5 | SYR4 |
| Selenium | 1.4 µg/L 2.8% of the EPA limit 50 µg/L Highest in the city: HAPPY TRAILS MHP · 33 people · 2018 | 1/5 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.2 µg/L 20% of the EPA limit 6 µg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2017 | 1/5 | SYR4 |
| Mercury | 0.0500 µg/L 2.5% of the EPA limit 2 µg/L Highest in the city: CATHANCE TRAILER PARK · 135 people · 2017 | 1/5 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: BRUNSWICK/TOPSHAM WATER DISTRICT · 18,863 people · 2025
Highest in the city: 0.00043 mg/L — CATHANCE TRAILER PARK · 135 people · 2025 | 5/5 | 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 Topsham
| Supplier | Population served |
|---|---|
| BRUNSWICK/TOPSHAM WATER DISTRICT | 18,863 |
| TOPSHAM MOBILE HOME PARK INC | 243 |
| CATHANCE TRAILER PARK | 135 |
| MEADOWVIEW APARTMENTS | 40 |
| HAPPY TRAILS MHP | 33 |
Frequently asked questions about Topsham tap water
Is Topsham tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Topsham. 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 Topsham?
5 public water suppliers report drinking-water monitoring for Topsham, Maine to the EPA. Each is listed above with its population served.
What contaminants are in Topsham's water?
The contaminants EPA monitoring detected in Topsham include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Toluene. 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.