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EWG's Tap Water Database — 2021 UPDATE

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1,2-Dichloropropane

Signal Hill - City, Water Department

1,2-Dichloropropane is a volatile carcinogenic solvent discharged from chemical factories and landfills. It also contaminates farmland due to its former use as a soil fumigant. Read More.

The insecticide and fumigant uses of 1,2-dichloropropane were discontinued in the 1980s, but it is still used as an industrial solvent. The California public health goal of 0.5 parts per billion, set to protect against cancer, is 10 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 5 parts per billion. 1,2-Dichloropropane can also damage the nervous system, liver, kidneys, and digestive and respiratory systems.

Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

276

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016ND20ND
2017ND330ND
2018ND1000ND
2019ND1370ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for 1,2-dichloropropane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 5 ppb

The legal limit for 1,2-dichloropropane, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-04-219588-006-1035ND
2014-10-239588-005-0940ND
2015-04-219588-006-0943ND
2015-10-229588-005-1005ND
2016-04-209588-006-1000ND
2016-10-209588-005-1110ND
2017-07-054790-017-1047ND
2017-07-054790-021-1049ND
2017-07-054790-022-1052ND
2017-08-014790-017-1317ND
2017-08-014790-021-1320ND
2017-08-014790-022-1322ND
2017-08-221805-023-1335ND
2017-08-291805-023-1042ND
2017-09-051805-021-1226ND
2017-09-051805-023-1235ND
2017-09-111805-023-1220ND
2017-09-181805-023-1250ND
2017-09-251805-023-1457ND
2017-10-021805-016-1110ND
2017-10-021805-021-1116ND
2017-10-021805-023-1123ND
2017-10-091805-023-1405ND
2017-10-161805-023-1150ND
2017-10-199588-005-1023ND
2017-10-231805-023-1400ND
2017-10-301805-023-0800ND
2017-11-061805-016-0944ND
2017-11-061805-021-0939ND
2017-11-061805-023-0952ND
2017-11-131805-023-0815ND
2017-11-201805-023-1151ND
2017-11-271805-023-0825ND
2017-12-041805-016-0803ND
2017-12-041805-021-0806ND
2017-12-041805-023-0830ND
2017-12-111805-023-0805ND
2017-12-181805-023-1310ND
2017-12-261805-023-0930ND
2018-01-021805-016-0945ND
2018-01-021805-017-0944ND
2018-01-021805-021-0949ND
2018-01-021805-022-0948ND
2018-01-021805-023-0955ND
2018-01-081805-023-0850ND
2018-01-161805-023-1215ND
2018-01-221805-023-0905ND
2018-01-291805-023-0755ND
2018-02-051805-016-1212ND
2018-02-051805-017-1210ND
2018-02-051805-021-1216ND
2018-02-051805-022-1214ND
2018-02-051805-023-1220ND
2018-02-121805-023-0830ND
2018-02-201805-023-0800ND
2018-02-261805-023-0838ND
2018-03-051805-016-0840ND
2018-03-051805-017-0842ND
2018-03-051805-021-0844ND
2018-03-051805-022-0846ND
2018-03-051805-023-0850ND
2018-03-051805-023-1220ND
2018-03-121805-023-1228ND
2018-03-191805-023-0918ND
2018-03-261805-023-0835ND
2018-04-021805-016-0756ND
2018-04-021805-017-0758ND
2018-04-021805-021-0801ND
2018-04-021805-022-0804ND
2018-04-021805-023-0807ND
2018-04-091805-023-0805ND
2018-04-161805-023-0740ND
2018-04-231805-023-0755ND
2018-04-301805-023-0735ND
2018-05-071805-016-0922ND
2018-05-071805-017-0925ND
2018-05-071805-021-0928ND
2018-05-071805-022-0930ND
2018-05-071805-023-0915ND
2018-05-141805-023-0745ND
2018-05-211805-023-0748ND
2018-05-291805-023-0745ND
2018-06-041805-016-0840ND
2018-06-041805-017-0842ND
2018-06-041805-021-0844ND
2018-06-041805-022-0846ND
2018-06-041805-023-0857ND
2018-06-111805-023-0920ND
2018-06-181805-023-0740ND
2018-06-251805-023-0727ND
2018-07-021805-016-0823ND
2018-07-021805-017-0825ND
2018-07-021805-021-0828ND
2018-07-021805-022-0832ND
2018-07-021805-023-0835ND
2018-07-091805-023-0745ND
2018-07-161805-023-0718ND
2018-07-231805-023-0745ND
2018-07-301805-023-1155ND
2018-08-061805-016-0826ND
2018-08-061805-021-0830ND
2018-08-061805-023-0836ND
2018-08-151805-023-0730ND
2018-08-201805-023-1325ND
2018-08-271805-023-0740ND
2018-09-041805-016-0805ND
2018-09-041805-017-0807ND
2018-09-041805-021-0809ND
2018-09-041805-022-0811ND
2018-09-041805-023-0815ND
2018-09-101805-023-0945ND
2018-09-171805-023-0735ND
2018-09-241805-023-0745ND
2018-10-011805-016-0813ND
2018-10-011805-017-0816ND
2018-10-011805-021-0820ND
2018-10-011805-022-0823ND
2018-10-011805-023-0810ND
2018-10-081805-023-0900ND
2018-10-151805-023-0740ND
2018-10-189588-005-1015ND
2018-10-221805-023-0958ND
2018-10-291805-023-0745ND
2018-11-051805-016-0820ND
2018-11-051805-017-0822ND
2018-11-051805-021-0824ND
2018-11-051805-022-0826ND
2018-11-051805-023-0830ND
2018-11-131805-023-0805ND
2018-11-191805-023-0912ND
2018-11-261805-023-0730ND
2018-12-031805-016-0847ND
2018-12-031805-017-0845ND
2018-12-031805-021-0851ND
2018-12-031805-022-0849ND
2018-12-031805-023-0854ND
2018-12-101805-023-0745ND
2018-12-171805-023-0911ND
2018-12-261805-023-0805ND
2019-01-021805-016-0820ND
2019-01-021805-017-0823ND
2019-01-021805-021-0828ND
2019-01-021805-022-0831ND
2019-01-021805-023-0836ND
2019-01-071805-023-0815ND
2019-01-141805-023-0802ND
2019-01-221805-023-0820ND
2019-01-281805-023-0740ND
2019-02-041805-016-0837ND
2019-02-041805-017-0829ND
2019-02-041805-021-0832ND
2019-02-041805-022-0834ND
2019-02-041805-023-0850ND
2019-02-111805-023-0900ND
2019-02-191805-023-0850ND
2019-02-251805-023-0735ND
2019-03-041805-016-1400ND
2019-03-041805-017-1403ND
2019-03-041805-021-1406ND
2019-03-041805-022-1409ND
2019-03-041805-023-1412ND
2019-03-111805-023-0820ND
2019-03-181805-023-0838ND
2019-03-251805-023-0832ND
2019-04-011805-016-1323ND
2019-04-011805-017-1325ND
2019-04-011805-021-1328ND
2019-04-011805-022-1332ND
2019-04-011805-023-1315ND
2019-04-081805-023-0810ND
2019-04-151805-023-0825ND
2019-04-221805-023-0740ND
2019-04-291805-023-0815ND
2019-05-061805-016-0720ND
2019-05-061805-017-0723ND
2019-05-061805-021-0727ND
2019-05-061805-022-0730ND
2019-05-061805-023-0735ND
2019-05-131805-023-0740ND
2019-05-201805-023-1036ND
2019-05-281805-017-0908ND
2019-05-281805-022-0912ND
2019-05-281805-023-0905ND
2019-06-031805-017-0910ND
2019-06-031805-022-0915ND
2019-06-031805-023-0920ND
2019-06-101805-017-0830ND
2019-06-101805-022-0832ND
2019-06-101805-023-0835ND
2019-06-171805-017-0822ND
2019-06-171805-022-0825ND
2019-06-171805-023-0820ND
2019-06-241805-017-0927ND
2019-06-241805-022-0930ND
2019-06-241805-023-0924ND
2019-07-011805-017-0933ND
2019-07-011805-022-0936ND
2019-07-011805-023-0940ND
2019-07-081805-017-0820ND
2019-07-081805-022-0823ND
2019-07-081805-023-0827ND
2019-07-151805-017-0753ND
2019-07-151805-022-0757ND
2019-07-151805-023-0750ND
2019-07-221805-017-0805ND
2019-07-221805-022-0810ND
2019-07-221805-023-0815ND
2019-07-291805-017-0830ND
2019-07-291805-022-0835ND
2019-07-291805-023-0840ND
2019-08-051805-017-0845ND
2019-08-051805-022-0848ND
2019-08-121805-017-1205ND
2019-08-121805-022-1205ND
2019-08-121805-023-1205ND
2019-08-191805-017-0830ND
2019-08-191805-022-0832ND
2019-08-191805-023-0834ND
2019-08-261805-017-1115ND
2019-08-261805-022-1118ND
2019-08-261805-023-1123ND
2019-09-031805-017-0935ND
2019-09-031805-022-0940ND
2019-09-031805-023-0945ND
2019-09-091805-017-0820ND
2019-09-091805-022-0820ND
2019-09-091805-023-0815ND
2019-09-161805-017-0815ND
2019-09-161805-022-0818ND
2019-09-161805-023-0823ND
2019-09-231805-017-0820ND
2019-09-231805-022-0822ND
2019-09-231805-023-0825ND
2019-09-301805-017-0855ND
2019-09-301805-022-0858ND
2019-09-301805-023-0900ND
2019-10-071805-017-0905ND
2019-10-071805-022-0907ND
2019-10-071805-023-0910ND
2019-10-141805-017-0918ND
2019-10-141805-022-0920ND
2019-10-141805-023-0915ND
2019-10-211805-017-0855ND
2019-10-211805-022-0858ND
2019-10-211805-023-0902ND
2019-10-249588-005-0924ND
2019-10-281805-017-0915ND
2019-10-281805-022-0918ND
2019-10-281805-023-0922ND
2019-11-041805-017-0942ND
2019-11-041805-022-0945ND
2019-11-041805-023-0947ND
2019-11-121805-017-0845ND
2019-11-121805-022-0847ND
2019-11-121805-023-0850ND
2019-11-181805-017-0835ND
2019-11-181805-022-0838ND
2019-11-181805-023-0842ND
2019-11-251805-017-0815ND
2019-11-251805-022-0818ND
2019-11-251805-023-0810ND
2019-12-021805-017-1215ND
2019-12-021805-022-1218ND
2019-12-021805-023-1222ND
2019-12-091805-017-0810ND
2019-12-091805-022-0813ND
2019-12-091805-023-0816ND
2019-12-161805-017-0842ND
2019-12-161805-022-0845ND
2019-12-161805-023-0839ND
2019-12-231805-017-0903ND
2019-12-231805-022-0905ND
2019-12-231805-023-0908ND
2019-12-301805-017-0950ND
2019-12-301805-022-0958ND
2019-12-301805-023-1000ND