Is Middlefield, CT Tap Water Safe? Quality & Contaminants

What was found in Middlefield'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	3590 µg/L 36% of the EPA limit 10000 µg/L	6/6	SYR4
Nitrate-Nitrite	3590 µg/L 36% of the EPA limit 10000 µg/L	6/6	SYR4
Fluoride	1090 µg/L 27% of the EPA limit 4000 µg/L	4/6	SYR4
Copper	280 µg/L 22% of the EPA limit 1300 µg/L	5/6	SYR4
Barium	156 µg/L 7.8% of the EPA limit 2000 µg/L	6/6	SYR4
TTHM	119.7 µg/L 150% of the EPA limit, in the worst sample — 80 µg/L	1/6	SYR4
Chloroform	103.4 µg/L No EPA limit set	1/6	SYR4
Total Haloacetic Acids (HAA5)	61.8 µg/L 103% of the EPA limit, in the worst sample — 60 µg/L	1/6	SYR4
Lead	59 µg/L 393% of the EPA limit, in the worst sample — 15 µg/L	6/6	SYR4
Dichloroacetic Acid	34.6 µg/L No EPA limit set	1/6	SYR4
Trichloroacetic Acid	25.3 µg/L No EPA limit set	1/6	SYR4
Bromodichloromethane	14.6 µg/L No EPA limit set	1/6	SYR4
Gross Alpha, Excl. Radon And U	5.7428 pCi/L 38% of the EPA limit 15 pCi/L	2/6	SYR4
Arsenic	5 µg/L 50% of the EPA limit 10 µg/L	3/6	SYR4
Combined Uranium	4.2 µg/L 14% of the EPA limit 30 µg/L	2/6	SYR4
Dibromochloromethane	3.2 µg/L No EPA limit set	1/6	SYR4
Monochloroacetic Acid	3.1 µg/L No EPA limit set	1/6	SYR4
Combined Radium (-226 And -228)	2.13 pCi/L 43% of the EPA limit 5 pCi/L	3/6	SYR4
Antimony, Total	1.1 µg/L 18% of the EPA limit 6 µg/L	1/6	SYR4
Bromoform	1 µg/L No EPA limit set	1/6	SYR4
Dibromoacetic Acid	1 µg/L No EPA limit set	1/6	SYR4
Monobromoacetic Acid	0.7000 µg/L No EPA limit set	1/6	SYR4
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	6/6	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 Middlefield

Supplier	Population served
MIDDLETOWN WATER DEPARTMENT	41,019
LAKEVIEW ESTATES - MIDDLEFIELD	85
SYLVAN RIDGE CONDOMINIUMS	84
MIDDLEFIELD HOUSING AUTHORITY	62
BITTERSWEET RIDGE WATER ASSOCIATION	40
OLD INDIAN TRAIL	32

Frequently asked questions about Middlefield tap water

Is Middlefield tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Middlefield. 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 Middlefield?

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

What contaminants are in Middlefield's water?

The contaminants EPA monitoring detected in Middlefield 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.