The Power of Information

National Drinking Water Database

Trichloroethylene in Pennsylvania

Trichloroethylene is used to remove grease from fabricated metal parts and in the production of some textiles; this pollutant comes from metal degreasing sites, metal finishing and rubber processing industries. [read more]

The Most Polluted Communities in Pennsylvania

83 water utilities reported detecting Trichloroethylene in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Trichloroethylene level

RankSystem Population Served Positive test results of total reported tests Average Level
1Whitehall Twp Authority
Whitehall, PA
13,06318 of 217.16 ppb
(0 to 13.1 ppb)
2Sellersville Boro Water Works
Sellersville, PA
4,90050 of 556.93 ppb
(0 to 12.94 ppb)
3Valley View Estates
Macungie, PA
675 of 53.26 ppb
(2.6 to 3.8 ppb)
4Pawc Homesite
Wilkes-barre, PA
5521 of 213.15 ppb
(1.35 to 4.6 ppb)
5Maxatawny Twp Muni Auth
Kutztown, PA
4255 of 52.96 ppb
(2.2 to 4.2 ppb)
6Red Hill Water Authority
East Greenville, PA
2,50010 of 142.47 ppb
(0 to 7 ppb)
7Perkasie Borough Authority
Perkasie, PA
11,10017 of 202.36 ppb
(0 to 5.35 ppb)
8Aspinwall Boro Water Dept
Pittsburgh, PA
2,9604 of 41.9 ppb
(1.6 to 2.2 ppb)
9Kipps Run Mobile Court
Barto, PA
233 of 41.9 ppb
(0 to 2.9 ppb)
10Quarryville Boro
Quarryville, PA
3,15014 of 201.73 ppb
(0 to 3.4 ppb)

Health Based Limits for Trichloroethylene

Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.0.03 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.1.7 ppb
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.3 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.5 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.200 ppb
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.300 ppb

Violation Summary for Trichloroethylene in Pennsylvania

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Pennsylvania since 2004

Violation TypeNumber of Violations
Failure to monitor regularly397
Over maximum contaminant level, Average3
Over maximum contaminant level, Single Sample2
Failure to monitor: Check/Repeat/Confirmation sampling2