Know Your Environment. Protect Your Health.

Vinyl chloride

Windmill Ranch Subdivision

NOTE: Windmill Ranch Subdivision purchases water from Clwsc Canyon Lake Shores which is required to test for vinyl chloride. Sample information shown below was taken by Clwsc Canyon Lake Shores.

Vinyl chloride is a known human carcinogen used for production of polyvinyl chloride (PVC) plastics. Discharges from plastics manufacturing can contaminate drinking water with vinyl chloride. Read More.

Exposure to vinyl chloride increases the risk of cancer and can damage the liver and nervous system. The California public health goal of 0.05 parts per billion, set to protect against cancer, is 40 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 2 parts per billion.

Plastic pipes made of polyvinyl chloride (PVC) and chlorinated PVC (CPVC) are widely used for drinking water distribution lines and internal plumbing, raising concern about vinyl chloride contamination of drinking water. A study published in 2011 by Ryan Walter of Cornell University School of Civil and Environmental Engineering suggested that small amounts of vinyl chloride can leach from PVC pipes. Vinyl chloride can also form in the pipes as a result of water disinfection with chlorine.

In an assessment completed in 2000, California Office of Environmental Health Hazard Assessment stated that drinking water is not a significant source of exposure to vinyl chloride for the general population.

Click here to read more about carcinogenic VOCs.

 

81

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021ND20ND
2022ND20ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.05 ppb

The EWG Health Guideline of 0.05 ppb for vinyl chloride 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): 2 ppb

The legal limit for vinyl chloride, established in 1987, 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 due to vinyl chloride exposure.

ppb = parts per billion

All test results

NOTE: Windmill Ranch Subdivision purchases water from Clwsc Canyon Lake Shores which is required to test for vinyl chloride. Sample information shown below was taken by Clwsc Canyon Lake Shores.

Date Lab ID Result
2018-02-07AE12783ND
2018-02-07AE12781ND
2018-02-07AE12787ND
2018-05-16AE26612ND
2018-05-16AE26610ND
2018-05-16AE26608ND
2018-05-17AE26793ND
2018-05-17AE26813ND
2018-05-17AE26811ND
2018-05-17AE26809ND
2018-05-17AE26807ND
2018-05-17AE26795ND
2018-07-26AE34680ND
2018-07-26AE34682ND
2018-07-26AE34700ND
2018-11-06AE45425ND
2019-02-06AE53212ND
2019-02-06AE53214ND
2019-02-06AE53216ND
2019-04-23AE63384ND
2019-04-23AE63386ND
2019-08-20AE79904ND
2019-08-20AE79908ND
2019-10-30AE88002ND
2019-10-30AE88004ND
2019-10-30AE88006ND
2019-10-30AE88008ND
2020-01-15AE93761ND
2020-03-17AF03255ND
2020-03-17AF03267ND
2020-06-16AF15593ND
2020-07-23AF20446ND
2020-07-23AF20452ND
2020-09-03AF26472ND
2020-09-03AF26474ND
2020-09-03AF26476ND
2020-10-14AF30631ND
2020-10-14AF30633ND
2021-03-11AF46527ND
2021-04-21AF50935ND
2021-04-21AF50931ND
2021-04-21AF50929ND
2021-05-12AF53548ND
2021-05-12AF53562ND
2021-05-12AF53560ND
2021-05-12AF53556ND
2021-05-12AF53558ND
2021-08-24AF67704ND
2021-08-24AF67706ND
2021-08-24AF67708ND
2021-10-13AF73356ND
2021-10-13AF73350ND
2021-10-13AF73346ND
2021-10-13AF73344ND
2021-11-30AF77510ND
2021-11-30AF77524ND
2022-02-07AF83307ND
2022-02-07AF83309ND
2022-02-07AF83311ND
2022-04-11AF92707ND
2022-06-22AG01948ND
2022-06-22AG01946ND
2022-06-22AG01940ND
2022-08-23AG10532ND
2022-08-23AG10534ND
2022-08-23AG10536ND
2022-11-21AG19452ND
2022-11-21AG19454ND
2023-04-12AG36528ND
2023-04-12AG36548ND
2023-06-07AG43537ND
2023-06-07AG43533ND
2023-09-12AG55805ND
2023-09-12AG55819ND
2023-10-17AG60105ND
2023-10-17AG60107ND
2023-10-17AG60109ND
2023-11-09AG63073ND
2023-11-09AG63075ND
2023-12-20AG67185ND
2023-12-20AG67195ND