Picloram
Red Rock Water Llc
Picloram is a herbicide that in studies of laboratory animals has been linked with reduced testicular size and damage to the liver and thyroid.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.441 ppb | 1 | 1 | 0.441 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 0.664 ppb | 1 | 1 | 0.664 ppb |
| 2022 | 0.478 ppb | 4 | 4 | 0.342 ppb - 0.559 ppb |
| 2023 | 0.493 ppb | 4 | 4 | 0.321 ppb - 0.611 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 166 ppb
The EWG Health Guideline of 166 ppb for picloram 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 change to internal organs.
EPA Maximum Contaminant
Level (MCL): 500 ppb
The legal limit for picloram, established in 1992, was based on toxicity studies in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-12-31 | S181231008-001 | 0.441 ppb |
| 2020-10-15 | SMAJ0438-01 | ND |
| 2021-12-16 | SMBL0609-01 | 0.664 ppb |
| 2022-03-23 | SMCC0777-01 | 0.456 ppb |
| 2022-06-24 | SMCF0860-01 | 0.559 ppb |
| 2022-09-22 | SMCI0769-01 | 0.556 ppb |
| 2022-12-22 | SMCL0718-01 | 0.342 ppb |
| 2023-03-29 | SMDC0890-01 | 0.321 ppb |
| 2023-06-26 | SMDF0975-01 | 0.584 ppb |
| 2023-09-22 | SMDI0819-01 | 0.611 ppb |
| 2023-12-19 | SMDL0632-01 | 0.457 ppb |