Cobalt
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 cobalt. Sample information shown below was taken by Regional Water Authority.
Cobalt is a metal found throughout the environment; people may be exposed to cobalt in air, food and drinking water.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 14 | 0 | ND |
| 2014 | ND | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 70 ppb
The EWG Health Guideline of 70 ppb for cobalt was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against change in blood chemistry.
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 cobalt. Sample information shown below was taken by Regional Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-21 | 35123679019AM | ND |
| 2014-01-21 | 35123679025AM | ND |
| 2014-01-21 | 35123679023AM | ND |
| 2014-01-21 | 35123679013AM | ND |
| 2014-01-21 | 35123679011AM | ND |
| 2014-01-21 | 35123679016AM | ND |
| 2014-01-21 | 35123679033AM | ND |
| 2014-01-21 | 35123679039AM | ND |
| 2014-01-21 | 35123679035AM | ND |
| 2014-01-21 | 35123679037AM | ND |
| 2014-01-21 | 35123679001AM | ND |
| 2014-01-21 | 35123679029AM | ND |
| 2014-01-21 | 35123679017AM | ND |
| 2014-01-21 | 35123679021AM | ND |
| 2014-01-21 | 35123679007AM | ND |
| 2014-01-21 | 35123679027AM | ND |
| 2014-01-21 | 35123679005AM | ND |
| 2014-01-21 | 35123679009AM | ND |
| 2014-01-21 | 35123679031AM | ND |
| 2014-01-21 | 35123679003AM | ND |
| 2014-04-28 | 35135837001AM | ND |
| 2014-04-28 | 35135837011AM | ND |
| 2014-04-28 | 35135837003AM | ND |
| 2014-04-28 | 35135837007AM | ND |
| 2014-04-28 | 35135837005AM | ND |
| 2014-04-28 | 35135837009AM | ND |
| 2014-04-29 | 35136068001AM | ND |
| 2014-04-29 | 35136068003AM | ND |
| 2014-10-21 | 2036262004 | ND |
| 2014-10-21 | 2036262001 | ND |
| 2014-10-21 | 2036262005 | ND |
| 2014-10-21 | 2036262006 | ND |
| 2014-10-21 | 2036262007 | ND |
| 2014-10-21 | 2036262003 | ND |
| 2014-10-21 | 2036262008 | ND |
| 2014-10-21 | 2036262002 | ND |