Pesticide Residues and MRLs: A Practical Guide for Food Businesses
A single Maximum Residue Level exceedance can trigger a border rejection, a recall and lasting reputational damage. This guide explains what MRLs are, how common exceedances actually are, what happens when a pesticide is banned, and how to manage — and predict — pesticide risk across your supply chain.
Pesticide residues are the traces of pesticides that remain in or on food after crops are treated. To protect consumers and keep trade fair, regulators set Maximum Residue Levels (MRLs) — the highest amount of a given residue legally allowed in a food. For food businesses, staying within MRLs is both a legal duty and a commercial necessity: a single exceedance can trigger a border rejection, a recall, and lasting reputational damage. This guide explains what MRLs are, how common exceedances actually are, what happens when a pesticide is banned, and how to manage — and predict — pesticide risk across your supply chain.
What is a Maximum Residue Level (MRL)?
An MRL is the highest concentration of a pesticide residue legally permitted in or on a food or feed product. In the EU, MRLs are harmonised across all member states under Regulation (EC) No 396/2005 [1]. Where no specific MRL has been set for a pesticide–crop combination, a default limit of 0.01 mg/kg applies — the level EU reference laboratories treat as routinely measurable — unless a different default is set for that substance in Annex V. You can look up any limit in the European Commission’s MRL database [2].
An important nuance: MRLs are trading standards based on good agricultural practice, not toxicological safety thresholds. A residue above the MRL is illegal to place on the market, but it is not automatically a health risk — the two are set on different bases.
How common are MRL exceedances?
MRL exceedances are uncommon. In its 2023 European Union report on pesticide residues in food, published in May 2025, the European Food Safety Authority (EFSA) found that 96.3% of the 132,793 samples taken across EU national control programmes were within legal limits, and that more than half of all samples — 58.0% — contained no quantifiable pesticide residue at all. EFSA concluded that the dietary risk to consumers is very low [3].
Of the 132,793 samples in EU national control programmes, 127,816 (96.3%) were within legal limits and 4,977 (3.7%) exceeded an MRL. Within the EU-coordinated subset of 13,246 samples, 98.0% were within legal limits. After measurement uncertainty was applied, 2.0% of national-programme samples and 1.0% of EU-coordinated samples were formally non-compliant [3].
The practical takeaway for a food business: exceedances are the exception, not the rule — but the 3.7% of samples that exceed an MRL (2.0% of all samples end in formal non-compliance once measurement uncertainty is applied) are concentrated in specific commodities, origins and pesticide combinations. The distinction matters commercially, because a numerical exceedance is enough to get a lot detained and disputed even when it never ends in a sanction. That is exactly where risk-based controls should focus, rather than spreading testing evenly across everything.
Why do MRLs matter for your business?
MRLs matter commercially because an exceedance is one of the most frequent reasons a consignment is rejected at an EU border or withdrawn from the market — outcomes published as RASFF notifications and tracked through iComplai’s regulatory monitoring. The cost is rarely just the shipment. One positive result sets off a chain: the lot is detained and usually destroyed, the buyer pays for confirmatory analysis and disposal, delivery windows are missed and contractual penalties follow, and repeated findings on the same material end in retailer delisting. Above all of that sits the reputational cost of a public recall — see iComplai’s supply chain risk assessment. For high-volume importers the deeper cost is structural: a recurring pesticide problem on a key raw material can jeopardise an entire supplier relationship and force requalification of an origin.
What happens when a pesticide is banned? The chlorpyrifos case
When the EU withdraws approval for a pesticide, its MRLs fall to the 0.01 mg/kg default, and chlorpyrifos is the clearest recent example. Once among the most widely used insecticides, chlorpyrifos and chlorpyrifos-methyl were not renewed by the EU on 10 January 2020 after EFSA concluded that safe exposure levels could not be established; member states had to withdraw national authorisations by 16 February 2020. From 13 November 2020, their MRLs were lowered to the default 0.01 mg/kg for all food and feed under Commission Regulation (EU) 2020/1085 [4] — the change is set out in our note on the chlorpyrifos MRL amendment to Regulation (EC) No 396/2005.
Why is chlorpyrifos still turning up at the EU border?
The trade impact was immediate. Chlorpyrifos remained the single most frequently notified pesticide residue in RASFF border controls in the years that followed — because it is still authorised and in use in several major exporting countries, so consignments that are perfectly legal at origin now meet the EU’s 0.01 mg/kg default limit at the border. On the iComplai platform, Türkiye (503 notifications), India (235) and Egypt (180) account for most of the 1,707 chlorpyrifos notifications recorded between 2021 and 2025, with citrus the hardest-hit commodity group on 444 [5]. The lesson is stark: a regulatory decision can turn a previously compliant raw material non-compliant almost overnight. Businesses that track those changes early avoid the rejections that catch everyone else out.
Where does pesticide risk concentrate?
Pesticide risk concentrates in imported fresh produce. Of the RASFF pesticide-residue notifications recorded on the iComplai platform between 2021 and 2025, fruits and vegetables account for 3,033 — more than every other commodity group combined — with herbs and spices a distant second on 603 and cereals and bakery products third on 451. Below those three the counts fall away quickly: nuts and seeds 231, dietetic foods and supplements 186, cocoa, coffee and tea 172, animal feed 103 and meat and poultry 70 [5]. The same clustering holds at a finer grain, around specific sourcing regions and particular pesticide–crop pairings rather than across a whole category — see iComplai’s note on new pesticide hazards in apples and lemons. Knowing which of your materials and origins sit in those higher-risk clusters is the foundation of an efficient testing and verification programme.
MRLs change faster than a specification sheet gets reissued
Limits move, origins get added to enhanced controls, and a compliant raw material becomes a rejected consignment without anything changing on your side. iComplai tracks the regulatory movement per commodity and writes the finding up for you.
See automated report writingHow do you manage pesticide and MRL risk?
Managing pesticide and MRL risk means matching the depth of your controls to where exceedances actually occur, instead of testing every material to the same standard. A practical, risk-based programme usually combines five elements:
- Know the limits that apply. Check the current EU MRL for each pesticide–commodity pair, and remember the 0.01 mg/kg default where none is set.
- Test where risk is highest. Concentrate analytical spend on high-risk commodity/origin combinations rather than testing everything equally.
- Track regulatory change. MRL revisions, non-renewals and changes to import tolerances can move a material from compliant to non-compliant without anything changing in your supply chain — chlorpyrifos is the textbook case. Jurisdictions diverge, so watch the exporting country as well: see how the EPA evaluates pesticide risk in the United States.
- Set supplier requirements. Specify MRL compliance, require certificates of analysis, and build pesticide clauses into supplier agreements.
- Watch early-warning signals. Rising RASFF notifications on a commodity or origin are a leading indicator that your risk on that material is climbing.
Together these turn analytical testing from an evenly spread cost into a targeted control, concentrated on the commodity, origin and substance combinations that actually fail.
How can you predict pesticide risk before it reaches you?
Predictive pesticide risk monitoring means combining regulatory change, RASFF notification activity and market signals to flag rising MRL risk by commodity and origin before a shipment is tested or rejected. The hard part of any risk-based programme is doing that continuously, at the scale of a real supply chain, and that is where prediction beats reaction. In practice it means watching four streams every day: EU and third-country MRL amendments and approval decisions; new RASFF and border-control notifications broken down by commodity and origin; shifts in trade flow and sourcing region; and the substances regulators have placed under review but not yet restricted. iComplai’s pesticide risk prediction and continuous regulatory horizon scanning do exactly this — turning fragmented signals into an early warning for your raw materials.
Frequently asked questions
Is a residue above the MRL dangerous?
Not necessarily. MRLs are legal trading limits derived from good agricultural practice, not toxicological safety thresholds. A residue above the MRL is illegal to place on the market, but whether it poses a health risk is assessed separately against toxicological reference values such as the acute reference dose and the acceptable daily intake.
What is the default MRL in the EU?
Where no specific MRL has been set for a pesticide–crop combination, the EU applies a default limit of 0.01 mg/kg under Article 18(1)(b) of Regulation (EC) No 396/2005. It is a legislated generic default rather than an analytical detection floor, and a different default value can be fixed for an individual substance in Annex V.
What happens if a shipment exceeds an MRL?
A consignment that exceeds an MRL can be rejected at the EU border or withdrawn and recalled from the market, and the finding is normally published as a RASFF notification. Beyond the lost shipment, the business absorbs destroyed stock, confirmatory testing and disposal costs, customer penalties, an audit non-conformity and, in repeat cases, retailer delisting.
How common are MRL exceedances in the EU?
They are uncommon. EFSA’s 2023 European Union report on pesticide residues in food, published in May 2025, found 96.3% of the 132,793 samples from national control programmes within legal limits, and 58.0% free of any quantifiable residue. MRLs were exceeded in 3.7% of samples, and 2.0% were formally non-compliant once measurement uncertainty was applied.
Which foods carry the highest pesticide MRL risk?
Imported fresh produce, by a wide margin. Of the RASFF pesticide-residue notifications recorded on the iComplai platform between 2021 and 2025, fruits and vegetables account for 3,033 — more than every other commodity group combined — followed by herbs and spices on 603 and cereals and bakery products on 451.
How can food businesses reduce pesticide MRL risk?
Combine four things: risk-based testing weighted towards high-risk commodity and origin pairs rather than spread evenly across everything; proactive tracking of MRL revisions and substance non-renewals; supplier specifications that require MRL compliance and certificates of analysis; and continuous monitoring of RASFF notification activity, which typically rises on a commodity or origin before your own results move.
See the signals before they become findings
iComplai monitors authority notifications, recalls and adulteration signals for your own materials and suppliers, daily.
Talk to iComplaiWhere these claims come from
- European Union. Regulation (EC) No 396/2005 on maximum residue levels of pesticides in or on food and feed. EUR-Lex. eur-lex.europa.eu/eli/reg/2005/396/oj/eng
- European Commission. EU legislation on maximum residue levels (MRL database). food.ec.europa.eu/plants/pesticides/maximum-residue-levels/eu-legislation-mrls_en
- EFSA. The 2023 European Union report on pesticide residues in food. EFSA Journal 2025;23(5):e9398. doi.org/10.2903/j.efsa.2025.9398
- European Union. Commission Regulation (EU) 2020/1085 lowering MRLs for chlorpyrifos and chlorpyrifos-methyl to 0.01 mg/kg. EUR-Lex. eur-lex.europa.eu/eli/reg/2020/1085/oj/eng
- iComplai platform analysis of RASFF pesticide-residue notifications, 2021–2025 — commodity-group totals and the chlorpyrifos substance, origin and commodity breakdowns. Data as at 21 August 2026.