Food × analyte
DDT p,p' on fish, salmon
2013–2024 · 3 tested years
882samples tested
for this analyte
for this analyte
12samples with
a detection
a detection
1.4%of analyte-tested samples
Testing detected DDT p,p' in 12 of 882 fish, salmon samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 882 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
3 tested years between 2013 and 2024. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 2013 | 352 | 2 | 0.6% |
| 2014 | 354 | 7 | 2.0% |
| 2015 | Not tested | — | — |
| 2016 | Not tested | — | — |
| 2017 | Not tested | — | — |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | Not tested | — | — |
| 2021 | Not tested | — | — |
| 2022 | Not tested | — | — |
| 2023 | Not tested | — | — |
| 2024 | 176 | 3 | 1.7% |
Testing panels and detection limits change. These observations do not establish a causal trend.
About these results
Source: USDA Pesticide Data Program. Included annual releases: 2013, 2014, 2024.