1,1,1-Trichloroethane
Status: National drinking water standard exists
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.
2015:
14
states detected
97
utilities detected
4.0 million
people served
0
states over legal limit
0
utilities over legal limit
0
people served over legal limit
Health concerns for 1,1,1-trichloroethane
Harm to the brain and nervous system
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 200 ppb
The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.
ppb = parts per billion.
EPA Maximum Contaminant
Level Goal (MCLG)200 ppb
A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.
ppb = parts per billion.
States reporting 1,1,1-trichloroethane in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| New York | 27 | 1,802,585 | |
| California | 17 | 1,274,816 | |
| Wisconsin | 6 | 262,186 | |
| New Jersey | 15 | 202,879 | |
| Illinois | 3 | 159,003 | |
| Indiana | 4 | 77,676 | |
| Connecticut | 3 | 69,359 | |
| Pennsylvania | 10 | 58,191 | |
| Massachusetts | 2 | 26,574 | |
| West Virginia | 3 | 23,440 | |
| Washington | 3 | 7,530 | |
| Ohio | 1 | 6,400 | |
| Alaska | 2 | 511 | |
| Nevada | 1 | 150 | |
Utilities with the highest amounts of 1,1,1-trichloroethane, 2015
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Bets Water System | Oak Harbor, WA | 1 of 1 | 14.2 ppb | 50 |
| Madisonburg Water Works | Madisonburg, PA | 1 of 1 | 8.55 ppb | 250 |
| Grafton Waterworks | Grafton, WI | 12 of 26 | 5.36 ppb | 11,490 |
| Umh Valley View Danboro Mobile Home Park | Doylestown, PA | 1 of 1 | 4.00 ppb | 920 |
| Hinsdale Town Water District | Hinsdale, NY | 1 of 1 | 3.10 ppb | 350 |
| Grafton Water District* | Grafton, MA | 1 of 10 | 2.00 ppb | 10,703 |
| Nikishka Bay | Anchorage, AK | 1 of 1 | 1.26 ppb | 470 |
| Edna Mahan Correctional | Clinton, NJ | 1 of 1 | 1.22 ppb | 1,700 |
| Coraopolis Water & Sewer Authority* | Coraopolis, PA | 1 of 2 | 1.19 ppb | 5,804 |
| Corning Manor Water District | Corning, NY | 1 of 1 | 1.10 ppb | 770 |
| Georgetown* | Georgetown, IL | 1 of 1 | 0.960 ppb | 3,678 |
| Holden Water Division, DPW | Holden, MA | 4 of 8 | 0.925 ppb | 15,871 |
| Rainier Terrace | Olympia, WA | 1 of 1 | 0.900 ppb | 125 |
| Mcconnellsburg Borough Municipal Authority | Mcconnellsburg, PA | 2 of 3 | 0.873 ppb | 2,000 |
| South Huntington Water Department | South Huntington, NY | 1 of 1 | 0.850 ppb | 81,760 |
| Birchview Properties | Fairbanks, AK | 1 of 1 | 0.800 ppb | 41 |
| Hicksville WD | Hicksville, NY | 33 of 170 | 0.780 ppb | 47,810 |
| Great Oaks Water Company Inc. | San Jose, CA | 1 of 2 | 0.750 ppb | 99,199 |
| Pompton Lakes Mua* | Pompton Lakes, NJ | 1 of 1 | 0.616 ppb | 11,435 |
| Painted Post Village* | Painted Post, NY | 1 of 1 | 0.600 ppb | 2,334 |
| Unadilla Village | Unadilla, NY | 1 of 1 | 0.560 ppb | 1,128 |
| Lomira Waterworks | Lomira, WI | 1 of 2 | 0.550 ppb | 2,461 |
| Aberdeen Pate Water Company Inc.* | Aurora, IN | 1 of 1 | 0.500 ppb | 4,688 |
| Milford City Public Water System | Milford, OH | 2 of 4 | 0.453 ppb | 6,400 |
| Cassadaga Village | Cassadaga, NY | 3 of 6 | 0.415 ppb | 760 |
| Quimper | Port Hadlock, WA | 1 of 1 | 0.400 ppb | 7,355 |
| Riverbelle Properties LLC Mobile Home Park | Reno, NV | 1 of 2 | 0.345 ppb | 150 |
| Ashwood Apartments | Chester Springs, PA | 2 of 4 | 0.325 ppb | 75 |
| Franklin Square WD | Franklin Square, NY | 20 of 71 | 0.296 ppb | 20,000 |
| Pequannock Twp Water Department* | Pompton Plains, NJ | 1 of 3 | 0.267 ppb | 14,002 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report 1,1,1-Trichloroethane, but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Grafton Waterworks | Grafton, WI | 12 of 26 | 5.36 ppb | 11,490 |
| Grafton Water District* | Grafton, MA | 1 of 10 | 2.00 ppb | 10,703 |
| Holden Water Division, DPW | Holden, MA | 4 of 8 | 0.925 ppb | 15,871 |
| South Huntington Water Department | South Huntington, NY | 1 of 1 | 0.850 ppb | 81,760 |
| Hicksville WD | Hicksville, NY | 33 of 170 | 0.780 ppb | 47,810 |
| Great Oaks Water Company Inc. | San Jose, CA | 1 of 2 | 0.750 ppb | 99,199 |
| Pompton Lakes Mua* | Pompton Lakes, NJ | 1 of 1 | 0.616 ppb | 11,435 |
| Franklin Square WD | Franklin Square, NY | 20 of 71 | 0.296 ppb | 20,000 |
| Pequannock Twp Water Department* | Pompton Plains, NJ | 1 of 3 | 0.267 ppb | 14,002 |
| Garfield Water Department | Garfield City, NJ | 6 of 15 | 0.251 ppb | 30,487 |
| Lafayette Water Works* | Lafayette, IN | 1 of 2 | 0.250 ppb | 67,140 |
| Garden City | Garden City, NY | 15 of 132 | 0.219 ppb | 25,000 |
| Bethpage WD | Bethpage, NY | 23 of 162 | 0.181 ppb | 33,000 |
| Hempstead | Hempstead, NY | 5 of 60 | 0.179 ppb | 56,000 |
| Rockford | Rockford, IL | 3 of 17 | 0.174 ppb | 155,000 |
| Weirton Area Water Board* | Weirton, WV | 1 of 3 | 0.167 ppb | 22,694 |
| Westbury WD | Westbury, NY | 7 of 30 | 0.160 ppb | 20,500 |
| Parsippany-Troy Hills Water Department | Parsippany, NJ | 4 of 24 | 0.158 ppb | 50,400 |
| Plainview WD | Plainview, NY | 7 of 67 | 0.151 ppb | 35,000 |
| Swta - Main System* | Allentown, PA | 1 of 5 | 0.128 ppb | 16,000 |
| Mineola | Mineola, NY | 7 of 93 | 0.126 ppb | 20,600 |
| Perkasie Regional Authority* | Perkasie, PA | 1 of 11 | 0.1000 ppb | 11,100 |
| Jericho Water District | Syosset, NY | 14 of 187 | 0.0864 ppb | 58,000 |
| San Jose Water Company* | San Jose, CA | 5 of 63 | 0.0825 ppb | 998,000 |
| Port Washington WD | 38 Sqndy Hollow Rd, NY | 7 of 89 | 0.0643 ppb | 34,000 |
| Valley Water Systems, Inc. | Plainville, CT | 1 of 8 | 0.0638 ppb | 18,231 |
| Manchester Water Department* | Manchester, CT | 1 of 16 | 0.0563 ppb | 51,066 |
| Morris County MUA* | Randolph Twp, NJ | 3 of 8 | 0.0525 ppb | 32,980 |
| Moorestown Water Department | Morrestown, NJ | 2 of 5 | 0.0400 ppb | 19,000 |
| Elmira Water Board* | Elmira, NY | 1 of 19 | 0.0300 ppb | 66,529 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report 1,1,1-Trichloroethane, but it likely has the contaminant in its water supply.