Cobalt
CTWC - Unionville System
NOTE: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for cobalt. Sample information shown below was taken by Metropolitan District Commission.
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 | 8 | 0 | ND |
| 2014 | ND | 8 | 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: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for cobalt. Sample information shown below was taken by Metropolitan District Commission.
| Date | Lab ID | Result |
|---|---|---|
| 2013-07-17 | 201307180553AM | ND |
| 2013-07-17 | 201307180815AM | ND |
| 2013-07-17 | 201307180544AM | ND |
| 2013-07-17 | 201307180750AM | ND |
| 2013-07-17 | 201307180742AM | ND |
| 2013-10-09 | 201310100652AM | ND |
| 2013-10-09 | 201310100586AM | ND |
| 2013-10-09 | 201310100650AM | ND |
| 2013-10-09 | 201310100588AM | ND |
| 2013-10-09 | 201310100524AM | ND |
| 2014-01-07 | 201401080426AM | ND |
| 2014-01-07 | 201401080361AM | ND |
| 2014-01-07 | 201401080380AM | ND |
| 2014-01-07 | 201401080365AM | ND |
| 2014-01-08 | 201401090269AM | ND |
| 2014-04-08 | 201404090495AM | ND |
| 2014-04-08 | 201404090429AM | ND |
| 2014-04-08 | 201404090545AM | ND |
| 2014-04-08 | 201404090441AM | ND |
| 2014-04-09 | 201404100634AM | ND |