Know Your Environment. Protect Your Health.

Mercury (inorganic)

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 mercury (inorganic). Sample information shown below was taken by Regional Water Authority.

Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.

 

136

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND270ND
2019ND30ND
2020ND250ND
2021ND290ND
2022ND30ND
2023ND140ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1.2 ppb

The EWG Health Guideline of 1.2 ppb for mercury (inorganic) 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 2 ppb

The legal limit for inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.

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 mercury (inorganic). Sample information shown below was taken by Regional Water Authority.

Date Lab ID Result
2018-03-12IOC1 200489766ND
2018-03-12IOCR 200489760ND
2018-03-12IOCR 200489758ND
2018-03-12IOCR 200489759ND
2018-03-12IOCR 200489767ND
2018-03-14IOCR 200489911ND
2018-03-14IOC1 200489867ND
2018-03-14IOC1 200489870ND
2018-03-14IOC1 200489868ND
2018-03-14IOC1 200489884ND
2018-03-14IOC1 200489885ND
2018-03-14IOC1 200489871ND
2018-03-14IOC1 200489913ND
2018-03-14IOC1 200489914ND
2018-03-14IOCR 200489898ND
2018-03-14IOCR 200489900ND
2018-03-14IOCR 200489896ND
2018-03-14IOCR 200489912ND
2018-03-14IOCR 200489886ND
2018-03-14IOCR 200489887ND
2018-03-14IOCR 200489872ND
2018-03-14IOCR 200489897ND
2018-03-15IOCR 200490062ND
2018-03-15IOCR 200490063ND
2018-12-20IOC1 200516694ND
2018-12-20IOCR 200516697ND
2018-12-26IOCR 200516801ND
2019-03-18IOC1 200524895ND
2019-03-18IOCR 200524896ND
2019-03-18IOCR 200524903ND
2019-03-18IOCR 200524901ND
2019-03-18IOCR 200524902ND
2019-03-18IOCR 200524905ND
2019-03-18IOCR 200524900ND
2019-03-19IOCR 200525095ND
2019-03-19IOC1 200525057ND
2019-03-19IOC1 200525060ND
2019-03-19IOC1 200525058ND
2019-03-19IOC1 200525059ND
2019-03-19IOC1 200525077ND
2019-03-19IOC1 200525078ND
2019-03-19IOC1 200525061ND
2019-03-19IOC1 200525097ND
2019-03-19IOC1 200525098ND
2019-03-19IOCR 200525065ND
2019-03-19IOCR 200525066ND
2019-03-19IOCR 200525064ND
2019-03-19IOCR 200525096ND
2019-03-19IOCR 200525079ND
2019-03-19IOCR 200525080ND
2019-03-19IOCR 200525062ND
2019-05-08IOC1 200531297ND
2019-05-08IOCR 200531303ND
2020-02-10IOC1 200565460ND
2020-02-10IOCR 200565461ND
2020-02-10IOCR 200565469ND
2020-02-10IOCR 200565466ND
2020-02-10IOCR 200565467ND
2020-02-10IOCR 200565470ND
2020-02-11IOC1 200565624ND
2020-02-11IOC1 200565627ND
2020-02-11IOC1 200565626ND
2020-02-11IOC1 200565593ND
2020-02-11IOC1 200565625ND
2020-02-11IOC1 200565594ND
2020-02-11IOC1 200565628AND
2020-02-11IOCR 200565632ND
2020-02-11IOCR 200565633ND
2020-02-11IOCR 200565631ND
2020-02-11IOC1 200565628ND
2020-02-11IOCR 200565595ND
2020-02-11IOCR 200565596ND
2020-02-11IOCR 200565629ND
2020-02-12IOCR 200565847ND
2020-02-12IOCR 200565848ND
2020-08-10IOCR 200585597ND
2020-08-11IOCR 200585735ND
2020-08-11IOCR 200585736ND
2021-02-08IOCR 200605858ND
2021-02-08IOCR 200605854ND
2021-02-08IOCR 200605856ND
2021-02-08IOCR 200605852ND
2021-02-08IOCR 200605855ND
2021-02-09IOC1 200606114ND
2021-02-09IOC1 200606111ND
2021-02-09IOC1 200606110ND
2021-02-09IOC1 200606109ND
2021-02-09IOC1 200605956ND
2021-02-09IOC1 200605886ND
2021-02-09IOC1 200605888ND
2021-02-09IOC1 200606116ND
2021-02-09IOC1 200605959ND
2021-02-09IOC1 200605933ND
2021-02-09IOCR 200606115ND
2021-02-09IOCR 200606112ND
2021-02-09IOCR 200606113ND
2021-02-09IOCR 200605957ND
2021-02-09IOCR 200605958ND
2021-02-09IOCR 200605931ND
2021-02-09IOCR 200605887ND
2021-02-09IOCR 200605960ND
2021-02-09IOCR 200605889ND
2021-02-09IOCR 200606117ND
2021-02-10IOCR 200606359ND
2021-02-10IOCR 200606356ND
2021-02-17IOCR 200606910ND
2021-02-17IOC1 200606909ND
2022-02-15E300145541 300145548ND
2022-02-15E300145532 300145539ND
2022-02-15E300145523 300145530ND
2022-02-15E300145514 300145521ND
2022-02-15E300146276 300146283ND
2022-02-15E300145647 300145654ND
2022-02-15E300145667 300145674ND
2022-02-15E300145550 300145557ND
2022-02-15E300145575 300145582ND
2022-02-15E300145699 300145706ND
2022-02-15E300145718 300145725ND
2022-02-15I300145657 300145665ND
2022-02-15I300145585 300145593ND
2022-02-15I300145677 300145685ND
2022-02-15I300145560 300145568ND
2023-02-06E300305466 300305499ND
2023-02-07E300305797 300305804ND
2023-02-07I300305807 300305815ND
2023-02-14E300309461 300309468ND
2023-02-14E300309762 300309769ND
2023-02-14E300309452 300309459ND
2023-02-14E300309097 300309104ND
2023-02-14E300309470 300309477ND
2023-02-14E300309495 300309502ND
2023-02-14E300309531 300309538ND
2023-02-14E300309550 300309557ND
2023-02-14I300309505 300309513ND
2023-02-14I300309107 300309115ND
2023-02-14I300309480 300309488ND