What was found in Avon's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 4670 µg/L 47% of the EPA limit 10000 µg/L | 3/3 | SYR4 |
| Nitrate-Nitrite | 4200 µg/L 42% of the EPA limit 10000 µg/L | 3/3 | SYR4 |
| Barium | 1258.7 µg/L 63% of the EPA limit 2000 µg/L | 3/3 | SYR4 |
| Copper | 1120 µg/L 86% of the EPA limit 1300 µg/L | 3/3 | SYR4 |
| Fluoride | 197 µg/L 4.9% of the EPA limit 4000 µg/L | 2/3 | SYR4 |
| TTHM | 94.5 µg/L 118% of the EPA limit, in the worst sample — 80 µg/L | 3/3 | SYR4 |
| Chloroform | 89 µg/L No EPA limit set | 3/3 | SYR4 |
| Lead | 49 µg/L 327% of the EPA limit, in the worst sample — 15 µg/L | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 48.6 µg/L 81% of the EPA limit 60 µg/L | 3/3 | SYR4 |
| Trichloroacetic Acid | 36 µg/L No EPA limit set | 3/3 | SYR4 |
| Dichloroacetic Acid | 19.5 µg/L No EPA limit set | 3/3 | SYR4 |
| Bromodichloromethane | 11.1 µg/L No EPA limit set | 3/3 | SYR4 |
| Dibromochloromethane | 7.9 µg/L No EPA limit set | 3/3 | SYR4 |
| Monochloroacetic Acid | 7.8 µg/L No EPA limit set | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.2 pCi/L 28% of the EPA limit 15 pCi/L | 2/3 | SYR4 |
| Bromoform | 4 µg/L No EPA limit set | 2/3 | SYR4 |
| Arsenic | 3.2 µg/L 32% of the EPA limit 10 µg/L | 1/3 | SYR4 |
| Dibromoacetic Acid | 3.2 µg/L No EPA limit set | 2/3 | SYR4 |
| Tetrachloroethylene | 3.2 µg/L 64% of the EPA limit 5 µg/L | 1/3 | SYR4 |
| Chromium | 2.4 µg/L 2.4% of the EPA limit 100 µg/L | 1/3 | SYR4 |
| Combined Uranium | 2.2 µg/L 7.3% of the EPA limit 30 µg/L | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L | 3/3 | SYR4 |
| cis-1,2-Dichloroethylene | 1.4 µg/L 2% of the EPA limit 70 µg/L | 1/3 | SYR4 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L | 1/3 | SYR4 |
| Monobromoacetic Acid | 0.7300 µg/L No EPA limit set | 1/3 | SYR4 |
| 1,1,1-Trichloroethane | 0.6200 µg/L 0.3% of the EPA limit 200 µg/L | 1/3 | SYR4 |
| Chlordane | 0.3000 µg/L 15% of the EPA limit 2 µg/L | 1/3 | SYR4 |
| PFOS | 0.0080 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Pfba | 0.0070 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFOA | 0.0070 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Pfhxa | 0.0040 µg/L No EPA limit set | 2/3 | UCMR-5 |
| Pfpea | 0.0040 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFHXS | 0.0030 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Lead | 0.0024 mg/L 16% of the EPA limit 0.0150 mg/L | 3/3 | LCR |
Water suppliers serving Avon
| Supplier | Population served |
|---|---|
| CTWC - UNIONVILLE SYSTEM | 14,693 |
| AVON WATER CO | 11,590 |
| CTWC - NAUGATUCK REG-COLLINSVILLE SYS | 6,324 |
Frequently asked questions about Avon tap water
Is Avon tap water safe to drink?
EPA testing detected 35 contaminants in the water serving Avon. 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 Avon?
3 public water suppliers report drinking-water monitoring for Avon, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in Avon's water?
The contaminants EPA monitoring detected in Avon include Nitrate, Nitrate-Nitrite, Barium, Copper, Fluoride. The full list, with the highest level found 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.