Know Your Environment. Protect Your Health.

Beryllium

CTWC - Unionville System

NOTE: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for beryllium. Sample information shown below was taken by Metropolitan District Commission.

Beryllium is a toxic metal that is both naturally occurring and released into the environment from industrial pollution and incineration. Beryllium can damage lungs, bones and the digestive system.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppb

The EWG Health Guideline of 1 ppb for beryllium 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 the stomach and intestines.

EPA Maximum Contaminant
Level (MCL): 4 ppb

The legal limit for beryllium, established in 1992, was based on a toxicity study in laboratory animals published in 1970. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

NOTE: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for beryllium. Sample information shown below was taken by Metropolitan District Commission.

Date Lab ID Result
2018-07-18AE01630GEND
2018-07-18AE01632GEND
2018-07-18AE01631GEND
2019-12-03CE70740ND
2019-12-03CE70739ND
2019-12-03CE70741ND
2020-12-08IOC1 200600637ND
2020-12-08IOC1 200600611ND
2020-12-09IOC1 200600603ND
2021-11-23E300107450 300107454ND
2021-11-23E300107451 300107460ND
2021-11-29E300109635 300109640ND
2022-12-15E300287053 300287057ND
2022-12-15E300287072 300287076ND
2022-12-15E300287100 300287104ND
2023-12-05E300456248 300456251ND
2023-12-06E300456222 300456225ND
2023-12-06E300456228 300456231ND