Benzo[a]pyrene
Aquarion Water Company of Connecticut - Valley System
NOTE: Aquarion Water Company of Connecticut - Valley System purchases water from Regional Water Authority which is required to test for benzo[a]pyrene. Sample information shown below was taken by Regional Water Authority.
Benzo[a]pyrene is a polycyclic aromatic hydrocarbon, or PAH, released from combustion of fossil fuels and waste incinerators. PAHs increase the risk of cancer; damage the immune, nervous and reproductive systems; and can harm developing fetuses.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 6 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 6 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.007 ppb
The EWG Health Guideline of 0.007 ppb for benzo[a]pyrene 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): 0.2 ppb
The legal limit for benzo[a]pyrene, established in 1992, 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 PAH exposure.
ppb = parts per billion
All test results
NOTE: Aquarion Water Company of Connecticut - Valley System purchases water from Regional Water Authority which is required to test for benzo[a]pyrene. Sample information shown below was taken by Regional Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2019-05-08 | SOC 200531300 | ND |
| 2019-05-28 | SOC 200533720 | ND |
| 2019-05-28 | SOC 200533719 | ND |
| 2019-05-28 | SOC 200533803 | ND |
| 2019-05-28 | SOC 200533804 | ND |
| 2019-05-28 | SOC 200533660 | ND |
| 2019-05-28 | SOC 200533659 | ND |
| 2019-05-29 | SOC 200533881 | ND |
| 2019-05-29 | SOC 200533880 | ND |
| 2019-05-29 | SOC 200533867 | ND |
| 2019-05-29 | SOC 200533868 | ND |
| 2019-08-26 | SOC 200546198 | ND |
| 2019-08-26 | SOC 200546200 | ND |
| 2019-08-26 | SOC 200546197 | ND |
| 2019-08-27 | SOC 200546267 | ND |
| 2019-08-27 | SOC 200546268 | ND |
| 2019-08-27 | SOC 200546302 | ND |
| 2019-08-27 | SOC 200546303 | ND |
| 2019-08-28 | SOC 200546738 | ND |
| 2019-08-28 | SOC 200546737 | ND |
| 2019-08-28 | SOC 200546736 | ND |
| 2019-08-28 | SOC 200546553 | ND |
| 2022-07-11 | S300210659 300210665 | ND |
| 2022-07-11 | S300210651 300210657 | ND |
| 2022-07-11 | S300210156 300210162 | ND |
| 2022-07-11 | S300210822 300210828 | ND |
| 2022-07-11 | S300210164 300210170 | ND |
| 2022-07-12 | S300211086 300211092 | ND |
| 2022-07-12 | S300211068 300211074 | ND |
| 2022-07-12 | S300211076 300211082 | ND |
| 2022-07-13 | S300212413 300212419 | ND |
| 2022-07-13 | S300212421 300212427 | ND |
| 2022-07-14 | S300212957 300212963 | ND |
| 2022-10-17 | S300258850 300258856 | ND |
| 2022-10-17 | 300258850 300258856B | ND |
| 2022-10-17 | 300258858 300258864B | ND |
| 2022-10-17 | S300258858 300258864 | ND |
| 2022-10-18 | S300258921 300258927 | ND |
| 2022-10-18 | 300258913 300258919B | ND |
| 2022-10-18 | 300258921 300258927B | ND |
| 2022-10-18 | 300259358 300259364B | ND |
| 2022-10-18 | S300259358 300259364 | ND |
| 2022-10-18 | S300259350 300259356 | ND |
| 2022-10-18 | 300259350 300259356B | ND |
| 2022-10-18 | S300258913 300258919 | ND |
| 2022-10-19 | S300259930 300259938 | ND |
| 2022-10-19 | 300259930 300259938B | ND |
| 2022-10-19 | 300259940 300259946B | ND |
| 2022-10-19 | S300259940 300259946 | ND |
| 2022-10-19 | S300260499 300260505 | ND |
| 2022-10-19 | 300260499 300260505B | ND |
| 2022-10-19 | 300260507 300260513B | ND |
| 2022-12-06 | S300281400 300281406 | ND |