Food × analyte
DDT p,p' on summer squash
2006–2022 · 9 tested years
1,815samples tested
for this analyte
for this analyte
41samples with
a detection
a detection
2.3%of analyte-tested samples
Testing detected DDT p,p' in 41 of 1,815 summer squash samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 4,312 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
9 tested years between 2006 and 2022. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 2006 | 54 | 1 | 1.9% |
| 2007 | 214 | 2 | 0.9% |
| 2008 | 158 | 2 | 1.3% |
| 2009 | Not tested | — | — |
| 2010 | Not tested | — | — |
| 2011 | Not tested | — | — |
| 2012 | 94 | 0 | 0.0% |
| 2013 | 363 | 8 | 2.2% |
| 2014 | 270 | 13 | 4.8% |
| 2015 | Not tested | — | — |
| 2016 | Not tested | — | — |
| 2017 | Not tested | — | — |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | 89 | 1 | 1.1% |
| 2021 | 365 | 7 | 1.9% |
| 2022 | 208 | 7 | 3.4% |
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: 2006, 2007, 2008, 2012, 2013, 2014, 2020, 2021, 2022.