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Tap water quality report

Manchester, CT

EPA monitoring detected 46 contaminants across the 4 water suppliers serving Manchester. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

4
water suppliers
543,822
people served
46
contaminants found
Connecticut rankings Lead in Connecticut PFAS in Connecticut

What was found in Manchester's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
7650 µg/L 77%
of the EPA limit 10000 µg/L
 4/4 SYR4
Nitrate-Nitrite
7650 µg/L 77%
of the EPA limit 10000 µg/L
 4/4 SYR4
Fluoride
1640 µg/L 41%
of the EPA limit 4000 µg/L
 4/4 SYR4
Copper
1117 µg/L 86%
of the EPA limit 1300 µg/L
 4/4 SYR4
Barium
425 µg/L 21%
of the EPA limit 2000 µg/L
 4/4 SYR4
Lead
227 µg/L 1513%
of the EPA limit, in the worst sample — 15 µg/L
 4/4 SYR4
TTHM
160 µg/L 200%
of the EPA limit, in the worst sample — 80 µg/L
 4/4 SYR4
Chloroform
150 µg/L
No EPA limit set
 4/4 SYR4
Total Haloacetic Acids (HAA5)
76.21 µg/L 127%
of the EPA limit, in the worst sample — 60 µg/L
 4/4 SYR4
Nitrite
76 µg/L 7.6%
of the EPA limit 1000 µg/L
 2/4 SYR4
Monobromoacetic Acid
63.179 µg/L
No EPA limit set
 2/4 SYR4
Trichloroacetic Acid
58.366 µg/L
No EPA limit set
 4/4 SYR4
Dichloroacetic Acid
26.8 µg/L
No EPA limit set
 4/4 SYR4
Lithium
19.8 µg/L
No EPA limit set
 1/4 UCMR-5
Bromodichloromethane
18.3 µg/L
No EPA limit set
 4/4 SYR4
Monochloroacetic Acid
15 µg/L
No EPA limit set
 3/4 SYR4
Bromate
12 µg/L 120%
of the EPA limit, in the worst sample — 10 µg/L
 1/4 SYR4
Dibromochloromethane
9.2 µg/L
No EPA limit set
 4/4 SYR4
Dibromoacetic Acid
7.6 µg/L
No EPA limit set
 3/4 SYR4
Combined Uranium
5.7 µg/L 19%
of the EPA limit 30 µg/L
 2/4 SYR4
Arsenic
5.5 µg/L 55%
of the EPA limit 10 µg/L
 1/4 SYR4
Gross Alpha, Excl. Radon And U
5.45 pCi/L 36%
of the EPA limit 15 pCi/L
 1/4 SYR4
Gross Beta Particle Activity
5.4 pCi/L
No EPA limit set
 1/4 SYR4
Cyanide
5 µg/L 2.5%
of the EPA limit 200 µg/L
 1/4 SYR4
Bromoform
3.9 µg/L
No EPA limit set
 3/4 SYR4
Combined Radium (-226 And -228)
3.1 pCi/L 62%
of the EPA limit 5 pCi/L
 3/4 SYR4
Trichloroethylene
3.1 µg/L 62%
of the EPA limit 5 µg/L
 2/4 SYR4
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
 1/4 SYR4
1,1-Dichloroethylene
1.5 µg/L 21%
of the EPA limit 7 µg/L
 1/4 SYR4
Tetrachloroethylene
1.2 µg/L 24%
of the EPA limit 5 µg/L
 2/4 SYR4
1,1,1-Trichloroethane
1.1 µg/L 0.6%
of the EPA limit 200 µg/L
 1/4 SYR4
Chromium
1.1 µg/L 1.1%
of the EPA limit 100 µg/L
 2/4 SYR4
Beryllium, Total
0.6340 µg/L 16%
of the EPA limit 4 µg/L
 1/4 SYR4
Mercury
0.2000 µg/L 10%
of the EPA limit 2 µg/L
 1/4 SYR4
Benzo(A)Pyrene
0.0630 µg/L 32%
of the EPA limit 0.2000 µg/L
 1/4 SYR4
Hexachlorocyclopentadiene
0.0170 µg/L 0%
of the EPA limit 50 µg/L
 1/4 SYR4
PFOS
0.0160 µg/L
No EPA limit set
 2/4 UCMR-5
PFBS
0.0150 µg/L
No EPA limit set
 2/4 UCMR-5
PFOA
0.0130 µg/L
No EPA limit set
 2/4 UCMR-5
Heptachlor Epoxide
0.0063 µg/L 3.2%
of the EPA limit 0.2000 µg/L
 1/4 SYR4
Pfba
0.0050 µg/L
No EPA limit set
 1/4 UCMR-5
Pfhxa
0.0047 µg/L
No EPA limit set
 2/4 UCMR-5
Pfpea
0.0047 µg/L
No EPA limit set
 2/4 UCMR-5
PFHXS
0.0038 µg/L
No EPA limit set
 2/4 UCMR-5
Pfhpa
0.0035 µg/L
No EPA limit set
 1/4 UCMR-5
Lead
0.0012 mg/L 8%
of the EPA limit 0.0150 mg/L
 4/4 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 single worst sample on record — 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 Manchester

SupplierPopulation served
METROPOLITAN DISTRICT COMMISSION 390,887
CTWC - NORTHERN REG-WESTERN SYSTEM 101,313
MANCHESTER WATER DEPARTMENT 51,198
CTWC - REDWOOD FARMS DIVISION 424

Frequently asked questions about Manchester tap water

Is Manchester tap water safe to drink?

EPA testing detected 46 contaminants in the water serving Manchester. 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 Manchester?

4 public water suppliers report drinking-water monitoring for Manchester, Connecticut to the EPA. Each is listed above with its population served.

What contaminants are in Manchester's water?

The contaminants EPA monitoring detected in Manchester include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.