What was found in Barkhamsted'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 | 15 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 3400 µg/L — FOXRIDGE APARTMENTS-WELL 2 · 25 people · 2018 | 5/5 | SYR4 |
| Nitrate-Nitrite | 36.17 µg/L 0.4% of the EPA limit 10000 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 3360 µg/L — FOXRIDGE APARTMENTS-WELL 2 · 25 people · 2018 | 5/5 | SYR4 |
| Fluoride | 1119.5 µg/L 28% of the EPA limit 4000 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 3/5 | SYR4 |
| Copper | 243.75 µg/L 19% of the EPA limit 1300 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 607.65 µg/L — BARKHAMSTED HILLS LLC · 50 people · 2019 | 5/5 | SYR4 |
| Barium | 12.22 µg/L 0.6% of the EPA limit 2000 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 109 µg/L — FOXRIDGE APARTMENTS-WELL 2 · 25 people · 2018 | 5/5 | SYR4 |
| TTHM | 89.1 µg/L 111% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Chloroform | 81.8 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 48 µg/L 80% of the EPA limit 60 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Lead | 44.685 µg/L 298% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 3/5 | SYR4 |
| Trichloroacetic Acid | 28.36 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Dichloroacetic Acid | 20.54 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Nitrite | 13 µg/L 1.3% of the EPA limit 1000 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 20 µg/L — ROCKTREE APARTMENTS · 60 people · 2019 | 2/5 | SYR4 |
| Combined Uranium | 14.9975 µg/L 50% of the EPA limit 30 µg/L Highest in the city: ROCKTREE APARTMENTS · 60 people · 2018 | 2/5 | SYR4 |
| Bromodichloromethane | 6.2 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.2920 pCi/L 1.9% of the EPA limit 15 pCi/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 5.99 pCi/L — BARKHAMSTED HILLS LLC · 50 people · 2018 | 2/5 | SYR4 |
| Dibromoacetic Acid | 5.379 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Chromium | 3.677 µg/L 3.7% of the EPA limit 100 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Monochloroacetic Acid | 3.44 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Highest in the city: FOXRIDGE APARTMENTS-WELL 1 · 25 people · 2018 | 1/5 | SYR4 |
| Combined Radium (-226 And -228) | 0.5470 pCi/L 11% of the EPA limit 5 pCi/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 1 pCi/L — BARKHAMSTED HILLS LLC · 50 people · 2018 | 2/5 | SYR4 |
| Monobromoacetic Acid | 0.8900 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Beryllium, Total | 0.3100 µg/L 7.8% of the EPA limit 4 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019
Highest in the city: 0.8000 µg/L — FOXRIDGE APARTMENTS-WELL 1 · 25 people · 2018 | 2/5 | SYR4 |
| Dibromochloromethane | 0.6000 µg/L No EPA limit set Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Cadmium | 0.2300 µg/L 4.6% of the EPA limit 5 µg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2019 | 1/5 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: WINSTED WATER WORKS · 7,784 people · 2025
Highest in the city: 0.0070 mg/L — ROCKTREE APARTMENTS · 60 people · 2023 | 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 Barkhamsted
| Supplier | Population served |
|---|---|
| WINSTED WATER WORKS | 7,784 |
| ROCKTREE APARTMENTS | 60 |
| BARKHAMSTED HILLS LLC | 50 |
| FOXRIDGE APARTMENTS-WELL 1 | 25 |
| FOXRIDGE APARTMENTS-WELL 2 | 25 |
Frequently asked questions about Barkhamsted tap water
Is Barkhamsted tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Barkhamsted. 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 Barkhamsted?
5 public water suppliers report drinking-water monitoring for Barkhamsted, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in Barkhamsted's water?
The contaminants EPA monitoring detected in Barkhamsted 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.