Beryllium
California Water Service (CWS) - Los Altos Suburban
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 0.000300 ppb | 10 | 2 | ND - 0.00200 ppb |
2015 | ND | 12 | 0 | ND |
2016 | ND | 8 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | ND | 13 | 0 | ND |
2019 | ND | 6 | 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 |
---|---|---|
2014-09-09 | 5810-011-1250 | ND |
2014-09-10 | 5810-016-1125 | ND |
2014-09-10 | 5810-010-1019 | ND |
2014-10-02 | 5701-010-0925 | ND |
2014-10-02 | 5701-013-1125 | ND |
2014-10-02 | 5701-008-1400 | ND |
2014-11-05 | 5701-032-1455 | 0.001000 ppb |
2014-11-05 | 5701-021-1120 | ND |
2014-11-05 | 5701-020-1043 | 0.00200 ppb |
2014-11-05 | 5701-016-1153 | ND |
2015-02-03 | 5810-021-1002 | ND |
2015-02-03 | 5810-015-0916 | ND |
2015-02-03 | 5810-013-1115 | ND |
2015-03-05 | 5810-022-1100 | ND |
2015-04-09 | 5810-008-1100 | ND |
2015-04-09 | 5810-020-1201 | ND |
2015-05-13 | 5810-018-1347 | ND |
2015-08-04 | 5810-023-0948 | ND |
2015-08-04 | 5810-035-0915 | ND |
2015-09-15 | 5810-057-1240 | ND |
2015-09-15 | 5810-032-1220 | ND |
2015-10-06 | 5810-002-1300 | ND |
2016-03-08 | 5701-032-1100 | ND |
2016-03-23 | 5810-028-1120 | ND |
2016-03-23 | 5810-030-1140 | ND |
2016-06-15 | 5810-024-1245 | ND |
2016-08-09 | 5810-037-1310 | ND |
2016-09-07 | 5701-032-1341 | ND |
2016-09-07 | 5810-029-1322 | ND |
2016-12-05 | 5701-032-1311 | ND |
2017-01-11 | 5810-011-1300 | ND |
2017-01-11 | 5810-010-1245 | ND |
2017-06-07 | 5701-032-1300 | ND |
2017-09-12 | 5701-032-1233 | ND |
2017-10-11 | 5810-016-1215 | ND |
2017-12-06 | 5701-032-1226 | ND |
2018-02-12 | 5810-021-1415 | ND |
2018-02-12 | 5810-013-1230 | ND |
2018-03-20 | 5701-032-1340 | ND |
2018-05-08 | 5810-018-1335 | ND |
2018-05-16 | 5810-023-1020 | ND |
2018-07-10 | 5810-008-1305 | ND |
2018-08-08 | 5810-022-1335 | ND |
2018-09-18 | 5810-035-1347 | ND |
2018-09-18 | 5810-032-1320 | ND |
2018-09-18 | 5701-032-1315 | ND |
2018-09-18 | 5810-057-1225 | ND |
2018-10-10 | 5810-002-1431 | ND |
2018-12-26 | 5810-020-1420 | ND |
2019-03-05 | 5701-032-1223 | ND |
2019-03-19 | 5810-030-1343 | ND |
2019-03-19 | 5810-028-1357 | ND |
2019-06-18 | 5810-024-1336 | ND |
2019-08-20 | 5810-037-1125 | ND |
2019-09-11 | 5810-029-1418 | ND |