1,1-Dichloroethylene
North Penn Water Authority
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
224
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 48 | 0 | ND |
| 2019 | ND | 45 | 0 | ND |
| 2020 | ND | 49 | 0 | ND |
| 2021 | ND | 38 | 0 | ND |
| 2022 | ND | 26 | 0 | ND |
| 2023 | ND | 18 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-22 | 20180293 | ND |
| 2018-01-22 | 20180294 | ND |
| 2018-01-22 | 20180295 | ND |
| 2018-01-22 | 20180296 | ND |
| 2018-02-05 | 20180455 | ND |
| 2018-02-05 | 20180456 | ND |
| 2018-02-05 | 20180452 | ND |
| 2018-02-05 | 20180453 | ND |
| 2018-02-05 | 20180454 | ND |
| 2018-02-05 | 20180457 | ND |
| 2018-03-20 | 20181073 | ND |
| 2018-03-20 | 20181074 | ND |
| 2018-03-20 | 20181075 | ND |
| 2018-03-20 | 20181076 | ND |
| 2018-04-16 | 20181445 | ND |
| 2018-04-16 | 20181446 | ND |
| 2018-04-16 | 20181448 | ND |
| 2018-04-16 | 20181447 | ND |
| 2018-05-02 | 20181740 | ND |
| 2018-05-02 | 20181741 | ND |
| 2018-05-02 | 20181744 | ND |
| 2018-05-02 | 20181742 | ND |
| 2018-05-02 | 20181743 | ND |
| 2018-06-18 | 20182322 | ND |
| 2018-06-18 | 20182324 | ND |
| 2018-06-18 | 20182325 | ND |
| 2018-06-18 | 20182323 | ND |
| 2018-06-18 | 20182326 | ND |
| 2018-06-18 | 20182327 | ND |
| 2018-07-16 | 20182699 | ND |
| 2018-07-16 | 20182700 | ND |
| 2018-07-16 | 20182701 | ND |
| 2018-08-01 | 20182922 | ND |
| 2018-08-01 | 20182923 | ND |
| 2018-08-01 | 20182920 | ND |
| 2018-08-01 | 20182921 | ND |
| 2018-08-01 | 20182924 | ND |
| 2018-09-05 | 20183429 | ND |
| 2018-09-05 | 20183431 | ND |
| 2018-09-05 | 20183430 | ND |
| 2018-09-05 | 20183432 | ND |
| 2018-10-15 | 20183924 | ND |
| 2018-10-15 | 20183926 | ND |
| 2018-10-15 | 20183925 | ND |
| 2018-12-03 | 8121626-01 | ND |
| 2018-12-03 | 8121626-03 | ND |
| 2018-12-03 | 8121626-02 | ND |
| 2018-12-10 | 8122542-01 | ND |
| 2019-01-21 | 20190220 | ND |
| 2019-02-04 | 20190410 | ND |
| 2019-02-04 | 20190411 | ND |
| 2019-02-04 | 20190409 | ND |
| 2019-02-04 | 20190412 | ND |
| 2019-02-07 | 20190528 | ND |
| 2019-03-04 | 20190828 | ND |
| 2019-03-04 | 20190829 | ND |
| 2019-03-04 | 20190830 | ND |
| 2019-04-17 | 20191516 | ND |
| 2019-04-17 | 20191518 | ND |
| 2019-04-17 | 20191517 | ND |
| 2019-05-02 | 20191674 | ND |
| 2019-05-02 | 20191675 | ND |
| 2019-05-02 | 20191678 | ND |
| 2019-05-02 | 20191676 | ND |
| 2019-05-02 | 20191677 | ND |
| 2019-07-15 | 20192723 | ND |
| 2019-07-15 | 20192724 | ND |
| 2019-07-15 | 20192727 | ND |
| 2019-07-15 | 20192728 | ND |
| 2019-07-15 | 20192725 | ND |
| 2019-07-15 | 20192726 | ND |
| 2019-08-05 | 20192977 | ND |
| 2019-08-05 | 20192978 | ND |
| 2019-08-05 | 20192976 | ND |
| 2019-08-05 | 20192979 | ND |
| 2019-09-04 | 20193493 | ND |
| 2019-09-04 | 20193494 | ND |
| 2019-09-04 | 20193495 | ND |
| 2019-09-04 | 20193496 | ND |
| 2019-10-21 | 20194146 | ND |
| 2019-10-21 | 20194147 | ND |
| 2019-10-21 | 20194148 | ND |
| 2019-11-04 | 20194264 | ND |
| 2019-11-04 | 20194265 | ND |
| 2019-11-04 | 20194267 | ND |
| 2019-11-04 | 20194266 | ND |
| 2019-11-04 | 20194268 | ND |
| 2019-11-04 | 20194269 | ND |
| 2019-12-02 | 20194693 | ND |
| 2019-12-02 | 20194694 | ND |
| 2019-12-02 | 20194696 | ND |
| 2019-12-02 | 20194697 | ND |
| 2019-12-02 | 20194695 | ND |
| 2020-01-20 | 21503058.00 | ND |
| 2020-01-20 | 21503079.00 | ND |
| 2020-01-20 | 21502995.00 | ND |
| 2020-01-20 | 21503016.00 | ND |
| 2020-01-20 | 21503037.00 | ND |
| 2020-02-03 | 21667082.00 | ND |
| 2020-02-03 | 21667103.00 | ND |
| 2020-02-03 | 21667124.00 | ND |
| 2020-03-02 | 21847019.00 | ND |
| 2020-03-02 | 21847040.00 | ND |
| 2020-03-02 | 21847061.00 | ND |
| 2020-03-02 | 21847082.00 | ND |
| 2020-05-05 | 22215272.00 | ND |
| 2020-05-05 | 22215293.00 | ND |
| 2020-05-05 | 22215335.00 | ND |
| 2020-05-05 | 22215356.00 | ND |
| 2020-05-05 | 22215314.00 | ND |
| 2020-06-01 | 22416283.00 | ND |
| 2020-06-01 | 22416304.00 | ND |
| 2020-06-01 | 22416346.00 | ND |
| 2020-06-01 | 22416367.00 | ND |
| 2020-06-01 | 22416325.00 | ND |
| 2020-06-01 | 22416388.00 | ND |
| 2020-07-20 | 22607576.00 | ND |
| 2020-07-20 | 22607597.00 | ND |
| 2020-07-20 | 22607513.00 | ND |
| 2020-07-20 | 22607534.00 | ND |
| 2020-07-20 | 22607555.00 | ND |
| 2020-08-03 | 22608153.00 | ND |
| 2020-08-03 | 22608174.00 | ND |
| 2020-08-03 | 22608195.00 | ND |
| 2020-08-03 | 22608216.00 | ND |
| 2020-09-02 | 22999417.00 | ND |
| 2020-09-02 | 22999438.00 | ND |
| 2020-09-02 | 22999480.00 | ND |
| 2020-09-02 | 22999501.00 | ND |
| 2020-09-02 | 22999459.00 | ND |
| 2020-09-02 | 22999522.00 | ND |
| 2020-10-19 | 23183100.00 | ND |
| 2020-10-19 | 23183121.00 | ND |
| 2020-10-19 | 23183142.00 | ND |
| 2020-11-02 | 23362139.00 | ND |
| 2020-11-02 | 23362160.00 | ND |
| 2020-11-02 | 23362181.00 | ND |
| 2020-11-02 | 23362202.00 | ND |
| 2020-12-02 | 23537601.00 | ND |
| 2020-12-02 | 23537622.00 | ND |
| 2020-12-02 | 23537643.00 | ND |
| 2020-12-02 | 23537664.00 | ND |
| 2021-01-18 | 23712798.00 | ND |
| 2021-01-18 | 23712819.00 | ND |
| 2021-01-18 | 23712777.00 | ND |
| 2021-02-05 | 23888813.00 | ND |
| 2021-02-05 | 23888855.00 | ND |
| 2021-02-05 | 23888834.00 | ND |
| 2021-03-01 | 24060131.00 | ND |
| 2021-03-01 | 24060152.00 | ND |
| 2021-03-01 | 24060173.00 | ND |
| 2021-03-09 | 24060110.00 | ND |
| 2021-04-19 | 24247771.00 | ND |
| 2021-04-19 | 24247792.00 | ND |
| 2021-05-17 | 24438764.00 | ND |
| 2021-05-17 | 24438785.00 | ND |
| 2021-05-17 | 24438806.00 | ND |
| 2021-06-02 | 24638235.00 | ND |
| 2021-06-02 | 24638256.00 | ND |
| 2021-06-02 | 24638277.00 | ND |
| 2021-06-02 | 24638298.00 | ND |
| 2021-07-21 | 24829607.00 | ND |
| 2021-07-21 | 24829628.00 | ND |
| 2021-07-21 | 24829545.00 | ND |
| 2021-07-21 | 24829566.00 | ND |
| 2021-07-21 | 24829586.00 | ND |
| 2021-08-03 | 24829650.00 | ND |
| 2021-08-03 | 24829671.00 | ND |
| 2021-08-03 | 24829692.00 | ND |
| 2021-08-03 | 24829734.00 | ND |
| 2021-08-03 | 24829713.00 | ND |
| 2021-09-08 | 25220384.00 | ND |
| 2021-09-08 | 25220405.00 | ND |
| 2021-09-08 | 25220426.00 | ND |
| 2021-10-18 | 25405351.00 | ND |
| 2021-10-19 | 25405330.00 | ND |
| 2021-10-19 | 25405372.00 | ND |
| 2021-10-19 | 25405393.00 | ND |
| 2021-11-01 | 25588161.00 | ND |
| 2021-12-06 | 25764727.00 | ND |
| 2022-01-17 | 25942747.00 | ND |
| 2022-01-17 | 25942768.00 | ND |
| 2022-01-17 | 25942726.00 | ND |
| 2022-01-17 | 25942789.00 | ND |
| 2022-02-09 | 26117638.00 | ND |
| 2022-02-09 | 26117659.00 | ND |
| 2022-02-09 | 26117680.00 | ND |
| 2022-02-09 | 26117701.00 | ND |
| 2022-03-02 | 26287450.00 | ND |
| 2022-05-04 | 26648502.00 | ND |
| 2022-05-04 | 26648523.00 | ND |
| 2022-05-04 | 26648544.00 | ND |
| 2022-05-16 | 26649188.00 | ND |
| 2022-05-16 | 26649209.00 | ND |
| 2022-05-16 | 26649230.00 | ND |
| 2022-06-06 | 26842863.00 | ND |
| 2022-07-20 | 27037772.00 | ND |
| 2022-08-03 | 27234063.00 | ND |
| 2022-08-03 | 27234084.00 | ND |
| 2022-08-03 | 27234042.00 | ND |
| 2022-08-03 | 27234105.00 | ND |
| 2022-10-17 | 27641622.00 | ND |
| 2022-10-17 | 27641643.00 | ND |
| 2022-10-17 | 27641664.00 | ND |
| 2022-11-02 | 27823012.00 | ND |
| 2022-12-05 | 27998849.00 | ND |
| 2023-01-18 | 28172960.00 | ND |
| 2023-01-18 | 28172981.00 | ND |
| 2023-01-18 | 28172939.00 | ND |
| 2023-01-19 | 28173002.00 | ND |
| 2023-02-02 | 28349544.00 | ND |
| 2023-03-06 | 28521266.00 | ND |
| 2023-03-06 | 28521287.00 | ND |
| 2023-04-12 | 28702331.00 | ND |
| 2023-06-21 | 29108542.00 | ND |
| 2023-07-19 | 29302135.00 | ND |
| 2023-07-19 | 29302156.00 | ND |
| 2023-07-19 | 29302114.00 | ND |
| 2023-08-02 | 29497561.00 | ND |
| 2023-09-13 | 29700123.00 | ND |
| 2023-09-13 | 29700144.00 | ND |
| 2023-10-12 | 29886776.00 | ND |
| 2023-11-01 | 30071595.00 | ND |
| 2023-12-04 | 30245965.00 | ND |