Food × analyte
Dieldrin on winter squash
1997–2021 · 11 tested years
4,738samples tested
for this analyte
for this analyte
368samples with
a detection
a detection
7.8%of analyte-tested samples
Testing detected Dieldrin in 368 of 4,738 winter squash samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 5,178 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
11 tested years between 1997 and 2021. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1997 | 81 | 20 | 24.7% |
| 1998 | 464 | 48 | 10.3% |
| 1999 | 231 | 18 | 7.8% |
| 2000 | Not tested | — | — |
| 2001 | Not tested | — | — |
| 2002 | Not tested | — | — |
| 2003 | Not tested | — | — |
| 2004 | 364 | 26 | 7.1% |
| 2005 | 731 | 48 | 6.6% |
| 2006 | 369 | 6 | 1.6% |
| 2007 | Not tested | — | — |
| 2008 | Not tested | — | — |
| 2009 | Not tested | — | — |
| 2010 | Not tested | — | — |
| 2011 | 186 | 19 | 10.2% |
| 2012 | 742 | 47 | 6.3% |
| 2013 | 187 | 2 | 1.1% |
| 2014 | Not tested | — | — |
| 2015 | Not tested | — | — |
| 2016 | Not tested | — | — |
| 2017 | Not tested | — | — |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | 677 | 63 | 9.3% |
| 2021 | 706 | 71 | 10.1% |
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: 1997, 1998, 1999, 2004, 2005, 2006, 2011, 2012, 2013, 2020, 2021.