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Contaminant guide

1,1,2-Trichloroethane in drinking water

The EPA limit for 1,1,2-Trichloroethane in drinking water is 5 µg/L. Of the 34,528 water suppliers tested, 63 had it detected.

5 µg/L
EPA limit (MCL)
0.2%
of suppliers detected it
(63/34,528)

What the EPA limit means

⚖️

5 µg/L

Maximum Contaminant Level — the enforceable ceiling a supplier must stay under.

🎯

3 µg/L

Health goal (MCLG) — the level with no known health effect. It is a goal, not a legal limit, and is often zero for carcinogens.

🧪

SYR4

Where these measurements come from. Hover the tag for the EPA programme and years.

Where 1,1,2-Trichloroethane was found

The water suppliers reporting the highest levels, worst first. For lead and copper that is the 90th-percentile result the action level is written against; for Six-Year Review data, the 95th percentile of each system's samples.

SupplierCityStateLevel vs EPA limit
Hicksville Wd Oyster Bay NY
10.34 µg/L 207%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Town of Hempstead Water Department Hempstead NY
6.77 µg/L 135%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Glendale-City, Water Dept. Glendale CA
5.71 µg/L 114%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Magna Water District Magna UT
5.6 µg/L 112%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Jericho Wd Oyster Bay NY
4.353 µg/L 87%
of the EPA limit 5 µg/L
Moses Lake City of Moses Lake WA
3.9 µg/L 78%
of the EPA limit 5 µg/L
San Gabriel Valley Water Co.-El Monte El Monte CA
3.775 µg/L 76%
of the EPA limit 5 µg/L
Garden City Park Wd New Hyde Park NY
3.61 µg/L 72%
of the EPA limit 5 µg/L
Hornell City North Hornell NY
3.1 µg/L 62%
of the EPA limit 5 µg/L
Albertson Wd North Hempstead NY
3 µg/L 60%
of the EPA limit 5 µg/L
Holden Water Division, Dpw Holden MA
2.261 µg/L 45%
of the EPA limit 5 µg/L
Burbank-City, Water Dept. Burbank CA
1.48 µg/L 30%
of the EPA limit 5 µg/L
New Philadelphia City Pws New Philadelphia OH
1.462 µg/L 29%
of the EPA limit 5 µg/L
Tract 349 Mutual Water Co. Cudahy CA
1.2665 µg/L 25%
of the EPA limit 5 µg/L
Garden City Garden City NY
1.2 µg/L 24%
of the EPA limit 5 µg/L
Port Washington Wd North Hempstead NY
1.2 µg/L 24%
of the EPA limit 5 µg/L
Hempstead Hempstead NY
1.1 µg/L 22%
of the EPA limit 5 µg/L
Bethpage Wd — —
0.8100 µg/L 16%
of the EPA limit 5 µg/L
Veolia Water New York Clarkstown NY
0.7000 µg/L 14%
of the EPA limit 5 µg/L
Manhasset Lakeville Wd North Hempstead NY
0.6990 µg/L 14%
of the EPA limit 5 µg/L
Mountain Gate Estates Mhp Globe CA
0.6700 µg/L 13%
of the EPA limit 5 µg/L
Wa of Great Neck North Thomaston NY
0.6685 µg/L 13%
of the EPA limit 5 µg/L
Aquarion-Plainville Regional Southington CT
0.6300 µg/L 13%
of the EPA limit 5 µg/L
Stuart, City of - Water Plant Stuart FL
0.6110 µg/L 12%
of the EPA limit 5 µg/L
Cedarpines Park Mwc Cedarpines Park CA
0.6000 µg/L 12%
of the EPA limit 5 µg/L

Frequently asked questions about 1,1,2-Trichloroethane

What is 1,1,2-Trichloroethane in drinking water?

1,1,2-Trichloroethane is monitored in US public drinking water under EPA rules. Each supplier's result is reported to the EPA and published here with its source and period.

What is the EPA limit for 1,1,2-Trichloroethane?

The EPA's Maximum Contaminant Level for 1,1,2-Trichloroethane is 5 µg/L, and its health goal (MCLG) is 3 µg/L. A result above the limit means the supplier must act; the goal is the level at which no health effects are expected.

How common is 1,1,2-Trichloroethane in US tap water?

Of the 34,528 water suppliers with results on file, 63 detected 1,1,2-Trichloroethane — 0.2% of those tested.