Lithium
City of Tigard
NOTE: City of Tigard purchases water from Lake Oswego - Tigard Water Supply which is required to test for lithium. Sample information shown below was taken by Lake Oswego - Tigard Water Supply.
Lithium occurs naturally in soil and rock. It is a pollutant from mining and industrial manufacturing of metals, ceramics and batteries. Ingesting too much lithium can lead to symptoms like abdominal pain, diarrhea, nausea and vomiting.
Samples
Samples exceeding legal limit (MCL)
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 | 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 |
| 2024 | ND | 7 | 0 | ND |
ppb = parts per billion
All test results
NOTE: City of Tigard purchases water from Lake Oswego - Tigard Water Supply which is required to test for lithium. Sample information shown below was taken by Lake Oswego - Tigard Water Supply.
| Date | Lab ID | Result |
|---|