What was found in ZIP 06820
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 2830 µg/L 28% of the EPA limit 10000 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2018 | 1/1 | SYR4 |
| Nitrate-Nitrite | 2744.8 µg/L 27% of the EPA limit 10000 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2018 | 1/1 | SYR4 |
| Fluoride | 970 µg/L 24% of the EPA limit 4000 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2015 | 1/1 | SYR4 |
| Copper | 329.5 µg/L 25% of the EPA limit 1300 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2017 | 1/1 | SYR4 |
| TTHM | 71.45 µg/L 89% of the EPA limit 80 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Chloroform | 56.6 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Barium | 51.9 µg/L 2.6% of the EPA limit 2000 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2015 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 49.9 µg/L 83% of the EPA limit 60 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 26.6 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 22 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Lead | 15.35 µg/L 102% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2017 | 1/1 | SYR4 |
| Bromodichloromethane | 14 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 6 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Bromoform | 3 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2019 | 1/1 | SYR4 |
| PFOA | 0.0058 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2023 | 1/1 | UCMR-5 |
| Pfba | 0.0055 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2023 | 1/1 | UCMR-5 |
| Pfhxa | 0.0037 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0033 µg/L No EPA limit set Main supplier: AQUARION-DARIEN · 18,737 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: AQUARION-DARIEN · 18,737 people · 2023 | 1/1 | 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.
Water suppliers serving ZIP 06820
| Supplier | State | Population served |
|---|---|---|
| AQUARION-DARIEN | CT | 18,737 |
Frequently asked questions about ZIP 06820 tap water
Is the tap water in ZIP 06820 safe to drink?
EPA testing detected 21 contaminants across the water suppliers serving ZIP 06820. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 06820?
1 public water supplier report EPA drinking-water monitoring for ZIP 06820. Each is listed above with its population served.
What contaminants are in ZIP 06820's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.