What was found in Brookfield'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-Nitrite | 580 µg/L 5.8% of the EPA limit 10000 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 9720 µg/L — 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 16/16 | SYR4 |
| Nitrate | 583 µg/L 5.8% of the EPA limit 10000 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 9720 µg/L — 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 16/16 | SYR4 |
| Fluoride | 887 µg/L 22% of the EPA limit 4000 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 1170 µg/L — BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS · 144 people · 2019 | 15/16 | SYR4 |
| Barium | 22.2 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 703.7 µg/L — 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 16/16 | SYR4 |
| Copper | 450 µg/L 35% of the EPA limit 1300 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 648 µg/L — AQUARION-NEW MILFORD REGIONAL · 13,331 people · 2019 | 16/16 | SYR4 |
| Nitrite | 21 µg/L 2.1% of the EPA limit 1000 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 190.5 µg/L — CANDLEWOOD SHORES TAX DISTRICT · 1,315 people · 2019 | 4/16 | SYR4 |
| TTHM | 69.98 µg/L 87% of the EPA limit 80 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019 | 7/16 | SYR4 |
| Chloroform | 54.25 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019 | 7/16 | SYR4 |
| Combined Uranium | 49.3235 µg/L 164% of the EPA limit, at the 95th percentile of samples — 30 µg/L Highest in the city: STONY HILL VILLAGE CONDOMINIUM ASSN · 392 people · 2019 | 15/16 | SYR4 |
| Lead | 5.4 µg/L 36% of the EPA limit 15 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 47.2 µg/L — AQUARION-BUTTERNUT · 124 people · 2018 | 16/16 | SYR4 |
| Total Haloacetic Acids (HAA5) | 38.502 µg/L 64% of the EPA limit 60 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019 | 7/16 | SYR4 |
| Gross Alpha, Excl. Radon And U | 31.579 pCi/L 211% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Highest in the city: STONY HILL VILLAGE CONDOMINIUM ASSN · 392 people · 2019 | 10/16 | SYR4 |
| Trichloroacetic Acid | 19 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019 | 7/16 | SYR4 |
| Dichloroacetic Acid | 18 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019 | 8/16 | SYR4 |
| Bromodichloromethane | 14 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019 | 7/16 | SYR4 |
| Cyanide | 8.3 µg/L 4.2% of the EPA limit 200 µg/L Highest in the city: CLC OWNERS CORPORATION · 736 people · 2018 | 2/16 | SYR4 |
| Dibromochloromethane | 3.712 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 6 µg/L — AQUARION-NEW MILFORD REGIONAL · 13,331 people · 2019 | 7/16 | SYR4 |
| Combined Radium (-226 And -228) | 5.603 pCi/L 112% of the EPA limit, at the 95th percentile of samples — 5 pCi/L Highest in the city: 39 HOP BROOK RD - APT COMPLEX · 36 people · 2014 | 11/16 | SYR4 |
| Monochloroacetic Acid | 4 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 5.1 µg/L — 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 2/16 | SYR4 |
| Arsenic | 4 µg/L 40% of the EPA limit 10 µg/L Highest in the city: 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 4/16 | SYR4 |
| Bromoform | 3.913 µg/L No EPA limit set Highest in the city: 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 6/16 | SYR4 |
| 1,1,1-Trichloroethane | 3.77 µg/L 1.9% of the EPA limit 200 µg/L Highest in the city: BROOKFIELD HOUSING AUTHORITY · 37 people · 2019 | 1/16 | SYR4 |
| Dibromoacetic Acid | 1.285 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 3.38 µg/L — CANDLEWOOD SHORES TAX DISTRICT · 1,315 people · 2019 | 7/16 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Highest in the city: CANDLEWOOD SHORES TAX DISTRICT · 1,315 people · 2019 | 4/16 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the city: LILLINONAH PARK ESTATES HOMEOWNERS ASSN · 128 people · 2019 | 2/16 | SYR4 |
| Monobromoacetic Acid | 1.53 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 1.9 µg/L — CANDLEWOOD ORCHARDS PROPERTY OWNERS CORP · 144 people · 2019 | 4/16 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.5 µg/L 25% of the EPA limit 6 µg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2019
Highest in the city: 1.8 µg/L — 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 2/16 | SYR4 |
| Antimony, Total | 1 µg/L 17% of the EPA limit 6 µg/L Highest in the city: BROOKFIELD HOUSING AUTHORITY · 37 people · 2017 | 1/16 | SYR4 |
| Beryllium, Total | 1 µg/L 25% of the EPA limit 4 µg/L Highest in the city: CANDLEWOOD SHORES TAX DISTRICT · 1,315 people · 2019 | 4/16 | SYR4 |
| Cadmium | 1 µg/L 20% of the EPA limit 5 µg/L Highest in the city: CANDLEWOOD SHORES TAX DISTRICT · 1,315 people · 2019 | 3/16 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.1700 µg/L 0% of the EPA limit 400 µg/L Highest in the city: 39 HOP BROOK RD - APT COMPLEX · 36 people · 2019 | 1/16 | SYR4 |
| Pfpea | 0.0034 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2025
Highest in the city: 0.0067 µg/L — AQUARION-NEW MILFORD REGIONAL · 13,331 people · 2024 | 2/16 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2026
Highest in the city: 0.0061 mg/L — CANDLEWOOD SHORES TAX DISTRICT · 1,315 people · 2024 | 16/16 | LCR |
| Pfhxa | 0.0036 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2025
Highest in the city: 0.0058 µg/L — AQUARION-NEW MILFORD REGIONAL · 13,331 people · 2024 | 2/16 | UCMR-5 |
| PFBS | 0.0043 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2025
Highest in the city: 0.0055 µg/L — AQUARION-NEW MILFORD REGIONAL · 13,331 people · 2024 | 2/16 | UCMR-5 |
| PFOA | 0.0054 µg/L No EPA limit set Main supplier: DANBURY WATER DEPARTMENT · 62,055 people · 2025 | 2/16 | UCMR-5 |
| PFOS | 0.0053 µg/L No EPA limit set Highest in the city: AQUARION-NEW MILFORD REGIONAL · 13,331 people · 2024 | 1/16 | UCMR-5 |
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 Brookfield
Frequently asked questions about Brookfield tap water
Is Brookfield tap water safe to drink?
EPA testing detected 37 contaminants in the water serving Brookfield. 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 Brookfield?
16 public water suppliers report drinking-water monitoring for Brookfield, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in Brookfield's water?
The contaminants EPA monitoring detected in Brookfield include Nitrate-Nitrite, Nitrate, Fluoride, Barium, Copper. 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.