1,1-Dichloroethylene
City of Idalou
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
49
Samples
18
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 | 5.12 ppb | 7 | 6 | ND - 15.6 ppb |
| 2019 | 8.21 ppb | 7 | 5 | ND - 17.4 ppb |
| 2020 | 4.71 ppb | 8 | 5 | ND - 14.8 ppb |
| 2021 | 5.99 ppb | 7 | 4 | ND - 17.0 ppb |
| 2022 | 4.40 ppb | 10 | 8 | ND - 11.5 ppb |
| 2023 | 6.52 ppb | 10 | 9 | ND - 12.4 ppb |
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 |
|---|---|---|
| 2018-03-21 | Q1811486005 | 3.77 ppb |
| 2018-03-21 | Q1811486001 | 3.01 ppb |
| 2018-04-26 | Q1816940005 | 2.76 ppb |
| 2018-04-26 | Q1816940004 | 6.74 ppb |
| 2018-08-02 | Q1830692001 | 3.95 ppb |
| 2018-10-25 | Q1842795003 | ND |
| 2018-11-29 | Q1848727002 | 15.6 ppb |
| 2019-01-30 | Q1904476005 | 17.4 ppb |
| 2019-04-10 | Q1914418002 | ND |
| 2019-04-10 | Q1914418004 | ND |
| 2019-04-10 | Q1914418007 | 13.8 ppb |
| 2019-09-11 | Q1963950002 | 13.2 ppb |
| 2019-09-11 | Q1963950005 | 1.07 ppb |
| 2019-10-31 | Q1974682001 | 12.0 ppb |
| 2020-03-11 | Q2010310003 | ND |
| 2020-03-11 | Q2010310005 | 0.880 ppb |
| 2020-03-11 | Q2010310007 | ND |
| 2020-06-09 | Q2023125005 | 10.3 ppb |
| 2020-06-09 | Q2023125007 | 0.860 ppb |
| 2020-08-12 | Q2032147003 | 14.8 ppb |
| 2020-08-12 | Q2032147009 | ND |
| 2020-11-16 | Q2044877001 | 10.8 ppb |
| 2021-02-23 | Q2104560001 | 8.29 ppb |
| 2021-02-23 | Q2104560003 | ND |
| 2021-06-03 | Q2114442002 | ND |
| 2021-06-03 | Q2114442004 | 17.0 ppb |
| 2021-08-30 | Q2123495001 | ND |
| 2021-08-30 | Q2123495003 | 8.50 ppb |
| 2021-11-18 | Q2132365001 | 8.12 ppb |
| 2022-02-16 | Q2205704005 | 6.66 ppb |
| 2022-02-16 | Q2205704007 | 1.60 ppb |
| 2022-04-28 | Q2212815004 | 1.82 ppb |
| 2022-04-28 | Q2212815006 | ND |
| 2022-04-28 | Q2212815008 | ND |
| 2022-04-28 | Q2212815010 | 6.63 ppb |
| 2022-08-24 | Q2225163003 | 2.64 ppb |
| 2022-08-24 | Q2225163005 | 11.5 ppb |
| 2022-12-05 | Q2236043003 | 10.1 ppb |
| 2022-12-05 | Q2236043005 | 3.00 ppb |
| 2023-02-15 | Q2306278004 | 10.3 ppb |
| 2023-02-15 | Q2306278006 | 3.24 ppb |
| 2023-04-25 | Q2315530007 | 0.840 ppb |
| 2023-04-25 | Q2315530009 | 11.3 ppb |
| 2023-04-25 | Q2315530011 | 4.09 ppb |
| 2023-07-26 | Q2329823002 | ND |
| 2023-07-26 | Q2329823004 | 12.4 ppb |
| 2023-07-26 | Q2329823006 | 6.37 ppb |
| 2023-12-06 | Q2352155001 | 5.51 ppb |
| 2023-12-06 | Q2352155003 | 11.1 ppb |