Tap WaterIndex

← Ansonia, CT

Tap water quality report

ZIP 06483 — Ansonia, CT

EPA monitoring across the 2 water suppliers serving ZIP 06483 in Ansonia, CT detected 27 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

2
water suppliers
431,980
people served
27
contaminants found

What was found in ZIP 06483

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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
3227.6 µg/L 32%
of the EPA limit 10000 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Nitrate
3102 µg/L 31%
of the EPA limit 10000 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Fluoride
1020 µg/L 26%
of the EPA limit 4000 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Nitrite
442.2 µg/L 44%
of the EPA limit 1000 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
1/2 SYR4
Copper
270 µg/L 21%
of the EPA limit 1300 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
Highest in the ZIP: 348.5 µg/L — AQUARION-VALLEY · 13,080 people · 2019
2/2 SYR4
Barium
246.8 µg/L 12%
of the EPA limit 2000 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
TTHM
81.905 µg/L 102%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Chloroform
70.9 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
Highest in the ZIP: 74 µg/L — AQUARION-VALLEY · 13,080 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
57.575 µg/L 96%
of the EPA limit 60 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Lead
44.2 µg/L 295%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Trichloroacetic Acid
31.09 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Dichloroacetic Acid
21.85 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Bromodichloromethane
13.39 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
Highest in the ZIP: 14 µg/L — AQUARION-VALLEY · 13,080 people · 2019
2/2 SYR4
Gross Beta Particle Activity
8.5 pCi/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
1/2 SYR4
Monochloroacetic Acid
6.1 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.549 pCi/L 31%
of the EPA limit 5 pCi/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
Highest in the ZIP: 5.68 pCi/L — AQUARION-VALLEY · 13,080 people · 2019
2/2 SYR4
Dibromochloromethane
3.2 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
2/2 SYR4
Chromium
1.5 µg/L 1.5%
of the EPA limit 100 µg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
1/2 SYR4
Bromoform
0.7500 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
Highest in the ZIP: 1.35 µg/L — AQUARION-VALLEY · 13,080 people · 2019
2/2 SYR4
Dibromoacetic Acid
0.8000 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2019
Highest in the ZIP: 1 µg/L — AQUARION-VALLEY · 13,080 people · 2019
2/2 SYR4
PFOS
0.0107 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2024
2/2 UCMR-5
PFOA
0.0071 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2024
Highest in the ZIP: 0.0081 µg/L — AQUARION-VALLEY · 13,080 people · 2025
2/2 UCMR-5
Pfpea
0.0031 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2024
Highest in the ZIP: 0.0068 µg/L — AQUARION-VALLEY · 13,080 people · 2025
2/2 UCMR-5
Pfhxa
0.0049 µg/L
No EPA limit set
Highest in the ZIP: AQUARION-VALLEY · 13,080 people · 2025
1/2 UCMR-5
PFBS
0.0035 µg/L
No EPA limit set
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2024
Highest in the ZIP: 0.0046 µg/L — AQUARION-VALLEY · 13,080 people · 2025
2/2 UCMR-5
Pfhpa
0.0036 µg/L
No EPA limit set
Highest in the ZIP: AQUARION-VALLEY · 13,080 people · 2025
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: REGIONAL WATER AUTHORITY · 418,900 people · 2026
Highest in the ZIP: 0.0011 mg/L — AQUARION-VALLEY · 13,080 people · 2025
2/2 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 06483

SupplierStatePopulation served
REGIONAL WATER AUTHORITY CT 418,900
AQUARION-VALLEY CT 13,080

Frequently asked questions about ZIP 06483 tap water

Is the tap water in ZIP 06483 safe to drink?

EPA testing detected 27 contaminants across the water suppliers serving ZIP 06483. 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 06483?

2 public water suppliers report EPA drinking-water monitoring for ZIP 06483. Each is listed above with its population served.

What contaminants are in ZIP 06483's water?

EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Nitrite, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.