Caffeine
California Water Service Company Oak Hills
Caffeine, from coffee and other beverages, is a key indicator of water contamination from wastewater effluent.
5
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 2 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-06-22 | 9590-008-0931 | ND |
| 2016-09-19 | 9590-003-0959 | ND |
| 2018-05-03 | 9590-001-1433 | ND |
| 2019-06-19 | 9590-008-1316 | ND |
| 2019-09-12 | 9590-003-1404 | ND |