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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Grafton Waterworks

1,1,1-Trichloroethane is a solvent and a degreasing agent used for manufacturing metal products and as ingredient in cleaners and aerosols. Exposure to 1,1,1-trichloroethane can harm the nervous system, liver and circulatory system.

MORE ABOUT THIS CONTAMINANT

 

155

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20147.04 ppb2613ND - 56.0 ppb
20155.36 ppb2612ND - 40.0 ppb
20167.65 ppb2512ND - 63.0 ppb
20174.81 ppb2411ND - 37.0 ppb
20186.85 ppb2412ND - 46.0 ppb
20194.47 ppb3017ND - 36.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 200 ppb

The legal limit for 1,1,1-trichloroethane, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-10773674ND
2014-03-10773656ND
2014-03-10773659ND
2014-03-107736710.190 ppb
2014-03-107736680.240 ppb
2014-03-1077366733.0 ppb
2014-04-07778332ND
2014-04-07778325ND
2014-04-07778326ND
2014-04-077783310.300 ppb
2014-04-077783290.690 ppb
2014-04-0777833053.0 ppb
2014-07-29806739ND
2014-07-29806744ND
2014-07-29806738ND
2014-07-29806745ND
2014-07-298067420.590 ppb
2014-07-298067461.10 ppb
2014-07-298067472.40 ppb
2014-07-2980674356.0 ppb
2014-12-15835979ND
2014-12-15835978ND
2014-12-15835985ND
2014-12-158359820.230 ppb
2014-12-158359840.260 ppb
2014-12-1583598335.0 ppb
2015-03-04846466ND
2015-03-04846461ND
2015-03-04846449ND
2015-03-04846464ND
2015-03-04846451ND
2015-03-0484646317.0 ppb
2015-05-26861799ND
2015-05-26861792ND
2015-05-26861793ND
2015-05-268617970.420 ppb
2015-05-268617983.10 ppb
2015-05-2686179636.0 ppb
2015-09-08881969ND
2015-09-08881962ND
2015-09-08881963ND
2015-09-088819680.420 ppb
2015-09-098819670.460 ppb
2015-09-098819700.490 ppb
2015-09-098819710.930 ppb
2015-09-0988196640.0 ppb
2015-12-28899820ND
2015-12-28899813ND
2015-12-28899814ND
2015-12-288998180.390 ppb
2015-12-288998191.10 ppb
2015-12-2889981739.0 ppb
2016-03-16910611ND
2016-03-16910599ND
2016-03-16910601ND
2016-03-169106070.590 ppb
2016-03-169106090.840 ppb
2016-03-1691060663.0 ppb
2016-05-16921438ND
2016-05-16921431ND
2016-05-16921432ND
2016-05-169214360.490 ppb
2016-05-169214370.840 ppb
2016-05-1692143545.0 ppb
2016-08-31942867ND
2016-08-31942860ND
2016-08-31942861ND
2016-08-319428650.410 ppb
2016-08-3194286444.0 ppb
2016-09-019428660.390 ppb
2016-09-019428700.410 ppb
2016-11-17960029ND
2016-11-17960022ND
2016-11-17960028ND
2016-11-17960023ND
2016-11-179600270.360 ppb
2016-11-1796002635.0 ppb
2017-03-15978080ND
2017-03-15978083ND
2017-03-15978086ND
2017-03-16978073ND
2017-03-169780770.380 ppb
2017-03-1697807637.0 ppb
2017-06-281001051ND
2017-06-281001048ND
2017-06-281001043ND
2017-06-2810010500.800 ppb
2017-06-28100104725.0 ppb
2017-09-201019870ND
2017-09-201019863ND
2017-09-201019869ND
2017-09-2010198680.380 ppb
2017-09-2010198710.910 ppb
2017-09-2010198722.20 ppb
2017-09-20101986733.0 ppb
2017-12-191034429ND
2017-12-191034422ND
2017-12-191034423ND
2017-12-1910344270.400 ppb
2017-12-1910344285.40 ppb
2017-12-19103442610.00 ppb
2018-03-141045110ND
2018-03-141045103ND
2018-03-141045104ND
2018-03-1410451090.460 ppb
2018-03-1410451080.470 ppb
2018-03-14104510746.0 ppb
2018-06-191062396ND
2018-06-191062389ND
2018-06-191062390ND
2018-06-1910623940.650 ppb
2018-06-1910623952.10 ppb
2018-09-171080756ND
2018-09-171080752ND
2018-09-171080753ND
2018-09-17108075811.0 ppb
2018-09-2610836080.470 ppb
2018-09-2610836109.30 ppb
2018-09-26108360946.0 ppb
2018-11-261094376ND
2018-11-261094369ND
2018-11-261094370ND
2018-11-2710943740.460 ppb
2018-11-2710943752.40 ppb
2018-11-27109437345.0 ppb
2019-03-181110136ND
2019-03-181110128ND
2019-03-1811101340.220 ppb
2019-03-1811101320.390 ppb
2019-03-1811101300.400 ppb
2019-03-18111013136.0 ppb
2019-04-171116388ND
2019-06-171128507ND
2019-06-171128501ND
2019-06-171128503ND
2019-06-1711285060.380 ppb
2019-06-1711285020.390 ppb
2019-06-1711285050.450 ppb
2019-06-17112850434.0 ppb
2019-09-241151017ND
2019-09-241151011ND
2019-09-241151013ND
2019-09-2411510150.300 ppb
2019-09-2411510120.370 ppb
2019-09-2411510180.860 ppb
2019-09-2411510162.40 ppb
2019-09-2411510193.20 ppb
2019-09-24115101425.0 ppb
2019-12-101164883ND
2019-12-101164877ND
2019-12-101164879ND
2019-12-101164878ND
2019-12-1011648810.330 ppb
2019-12-1011648820.520 ppb
2019-12-10116488029.0 ppb