Beryllium
CTWC - Shoreline Region-Guilford System
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 11 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | 0.0667 ppb | 6 | 1 | ND - 0.400 ppb |
2017 | ND | 2 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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
Date | Lab ID | Result |
---|---|---|
2014-01-29 | 140130CWCEIOC1 | ND |
2014-03-05 | 2669IOC1 | ND |
2014-03-05 | 2673IOC1 | ND |
2014-03-05 | 2674IOC1 | ND |
2014-03-05 | 2676IOC1 | ND |
2014-06-12 | 8366IOC1 | ND |
2014-06-12 | 8367IOC1 | ND |
2014-08-13 | 140915-0115IOC1 | ND |
2014-08-13 | 141007-0044IOC1 | ND |
2014-08-13 | BG93593IOC1 | ND |
2014-08-13 | BG93595IOC1 | ND |
2015-02-12 | BH73177IOC1 | ND |
2016-01-11 | BK50862IOC1 | ND |
2016-01-11 | BK50864IOC1 | 0.400 ppb |
2016-01-19 | BK54777IOC1 | ND |
2016-01-27 | BK58354IOC1 | ND |
2016-03-14 | BK78126IOC1 | ND |
2016-06-01 | BN44892IOC1 | ND |
2017-01-18 | BX31347IOC1 | ND |
2017-03-08 | BX82062IOC1 | ND |
2018-03-30 | CA11466IOC1 | ND |
2019-01-30 | IOC1 200520057 | ND |
2019-06-24 | IOC1 200537625 | ND |
2019-07-10 | IOC1 200539998 | ND |