500 samples, standard-grown
2022 · United States · USDA Pesticide Data Program · Calendar year
Pesticide residues found on summer squash
78% of standard-grown samples had at least one detected residue. Standard-grown means samples not identified as organic (called conventional in the source data). Detection does not, by itself, mean the food was unsafe.
All reported results below quantification
Two or more residues detected
Highest observed count: 9
Compared with the recorded EPA tolerance
30 samples, interpret cautiously
Annual context
How monitored results changed
Each row is a separate targeted survey. Samples can differ by retailer, origin and season, so this is context rather than a trend claim.
| Year | Standard-grown samples | Any residue | Multiple residues | Organic samples | Organic any residue |
|---|---|---|---|---|---|
| 2022 ↗Calendar year | 500 | 78% | 53% | 30 | 26.7% |
| 2021 ↗Calendar year | 650 | 75.5% | 55.4% | 48 | 20.8% |
| 2020 ↗Calendar year | 163 | 87.1% | 69.3% | 13 | 30.8% |
| 2014 ↗Calendar year | 511 | 55.8% | 29.5% | 20 | 30% |
| 2013 ↗Calendar year | 692 | 57.2% | 33.2% | 17 | 17.6% |
| 2012 ↗Calendar year | 180 | 65.6% | 44.4% | 6 | 50% |
| 2008 ↗Calendar year | 543 | 81.6% | 58.7% | 11 | 18.2% |
| 2007 ↗Calendar year | 728 | 80.5% | 58.2% | 14 | 42.9% |
| 2006 ↗Calendar year | 183 | 94.5% | 80.3% | 3 | Withheld |
Residue detail
What was found on summer squash?
The most frequently detected residues across all 530 samples. This is the complete available table for this monitoring entry.
530samples checked
Detection does not establish harm. Health risk depends on both toxicity and the amount a person is exposed to.
What do these types mean?
- FungicideControls fungal diseases such as moulds and mildews.
- InsecticideControls insects that damage crops or stored food.
- HerbicideControls weeds competing with a crop.
- Growth regulatorChanges plant growth, development or ripening.
- Other / mixedCovers multiple substances or a role that cannot be reliably assigned from the published name.
These labels describe agricultural function, not a toxicity ranking.
| Residue | Type | Samples | Median | Higher result | Typical published limit |
|---|---|---|---|---|---|
| Imidacloprid | Insecticide | 162 (30.6%) | 0.015 mg/kg | 0.062 mg/kg | 0.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Thiamethoxam | Other / mixed | 106 (20%) | 0.007 mg/kg | 0.049 mg/kg | 0.2 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Pyraclostrobin | Fungicide | 66 (12.5%) | 0.004 mg/kg | 0.019 mg/kg | 0.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Flutriafol | Other / mixed | 55 (10.4%) | 0.009 mg/kg | 0.023 mg/kg | 0.3 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Fluopyram | Fungicide | 48 (9.1%) | 0.004 mg/kg | 0.042 mg/kg | 0.6 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Acetamiprid | Insecticide | 43 (8.1%) | 0.005 mg/kg | 0.021 mg/kg | 0.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Metalaxyl/Mefenoxam | Other / mixed | 43 (8.1%) | 0.011 mg/kg | 0.067 mg/kg | 1 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Dinotefuran | Other / mixed | 39 (7.4%) | 0.017 mg/kg | 0.25 mg/kg | 0.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Azoxystrobin | Fungicide | 33 (6.2%) | 0.003 mg/kg | 0.005 mg/kg | 0.3 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Bifenthrin | Insecticide | 31 (5.8%) | 0.006 mg/kg | 0.025 mg/kg | 0.4 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Pydiflumetofen | Other / mixed | 29 (5.5%) | 0.017 mg/kg | 0.038 mg/kg | 0.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Flupyradifurone | Insecticide | 27 (5.1%) | 0.007 mg/kg | 0.084 mg/kg | 0.4 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Tetraconazole | Other / mixed | 26 (4.9%) | 0.003 mg/kg | 0.019 mg/kg | 0.15 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Propamocarb hydrochloride | Other / mixed | 25 (4.7%) | 0.007 mg/kg | 0.16 mg/kg | 1.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Fluopicolide | Other / mixed | 20 (3.8%) | 0.005 mg/kg | 0.025 mg/kg | 0.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Cyflufenamid | Other / mixed | 19 (3.6%) | 0.005 mg/kg | 0.017 mg/kg | 0.1 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Propamocarb | Other / mixed | 18 (3.4%) | 0.008 mg/kg | 0.17 mg/kg | 1.5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Chlorothalonil | Other / mixed | 17 (3.2%) | 0.09 mg/kg | 0.11 mg/kg | 5 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Heptachlor epoxide | Other / mixed | 17 (3.2%) | 0.003 mg/kg | 0.008 mg/kg | 0.05 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
| Myclobutanil | Fungicide | 16 (3%) | 0.005 mg/kg | 0.026 mg/kg | 0.2 mg/kg |
Health summary pending No reviewed substance-specific summary is available, so no health effect is inferred. Search WHO/FAO JMPR ↗ | |||||
“Higher result” is an approximate 95th-percentile observed concentration, not a safety threshold. Amounts of different pesticides should not be added together or compared directly. Functional types describe their usual agricultural role; they are not hazard or toxicity rankings.
ADI and ARfD are intake reference values, not limits for one food sample. A personal assessment would also require consumption, body-weight and wider exposure data. Source programmes report legal Maximum Residue Level results separately.
What this tells you
A monitoring result, not a verdict.
USDA PDP selects rotating commodities, with emphasis on foods important to consumer diets, including foods eaten by infants and children. It is not a test of every summer squash product sold in United States. This entry’s latest included calendar year release is from 2022.
Comparable annual records are available for 2022, 2021, 2020, 2014, 2013, 2012, 2008, 2007, 2006.
Published MRLs or tolerances are regulatory limits associated with pesticide use. Consumer-risk assessment is a separate process.
Broader sample coverage. At least 50 samples: broader monitoring coverage, but still targeted rather than random.
Compare organic and standard-grown results →Common questions
How to read these summer squash results
Were pesticide residues detected on summer squash?
78% of 500 standard-grown samples in the 2022 USDA Pesticide Data Program dataset had at least one quantified residue.
Does that mean summer squash were unsafe?
No. A laboratory detection is not, by itself, a consumer-risk finding. Regulators assess dietary risk separately.
Should I buy organic summer squash?
The monitored organic samples had a 26.7% detection rate, compared with 78% for standard-grown samples. This is a shopping-priority comparison, not a health-risk score.