# 2026-03942: EPA Updates Tolerances for Maleic Hydrazide and Other Pesticides on Food 2026-03942, Pesticide Tolerances; Implementing Registration Review Decisions for Certain Pesticides; Maleic Hydrazide, et al., is a Federal Register rule from Environmental Protection Agency published 2026-02-27, effective 2026-02-27; PRIA reads it as touching household money (as of 2026-06-11). - Canonical: https://policyrisk.com/federal-register/2026-03942 - As of: 2026-06-11 - Plain-text twin of the page above; the HTML and this file carry the same facts. ## Facts - Document number: 2026-03942 - Title: Pesticide Tolerances; Implementing Registration Review Decisions for Certain Pesticides; Maleic Hydrazide, et al. - Type: Rule - Agencies: Environmental Protection Agency - Citation: 91 FR 9722 - Published: 2026-02-27 - Effective: 2026-02-27 - Comments close: not stated - Significant: no - Touches household money: yes - Regulation identifier numbers: 2070-ZA16 - Last updated: 2026-06-11 ## In one line EPA Updates Tolerances for Maleic Hydrazide and Other Pesticides on Food ## Summary The EPA is updating rules about how much of certain pesticides, like Maleic Hydrazide, can safely stay on our food. Farmers, food makers, and pesticide companies need to know these changes start February 27, 2026, and some old rules are being cleaned up. If anyone disagrees, they have until April 28, 2026, to speak up—no extra costs expected, just clearer safety limits! ## Abstract The Environmental Protection Agency (EPA or Agency) is finalizing several pesticide tolerance actions under the Federal Food, Drug, and Cosmetic Act (FFDCA) that the Agency previously determined were necessary or appropriate during the registration review conducted under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). During registration review, EPA reviews all aspects of a pesticide case, including existing tolerances, to ensure that the pesticide continues to meet the standard for registration under FIFRA. The Agency is also finalizing tolerance actions identified outside of registration review as housekeeping measures, such as removing expired tolerances from the Code of Federal Register (CFR). The pesticide tolerances and active ingredients addressed in this rulemaking are identified and discussed in detail in Unit III. of this document. ## Effects PRIA read - Maleic Hydrazide Tolerance Exemption: benefit, low. EPA revoked all commodity-specific tolerances for maleic hydrazide and established an exemption from the requirement of a tolerance at new 40 CFR 180.1349, effective February 27, 2026. EPA also found maleic hydrazide low in toxicity, assessed the hydrazine impurity at a 15 parts per million (ppm) l… - Pyrazon Import Tolerances Expire: benefit, low. EPA will revoke pyrazon tolerances but is keeping the tolerances in the Code of Federal Regulations for import purposes until an expiration date of August 26, 2026 to allow treated commodities to clear trade channels. The rule is effective February 27, 2026 and the listed pyrazon tolerance values i… - Quinclorac Tolerance Reductions: benefit, low. EPA is decreasing quinclorac tolerances for several livestock commodities: poultry meat byproducts from 0.1 to 0.05 ppm, hog fat from 0.7 to 0.05 ppm, and hog meat byproducts from 1.5 to 0.05 ppm, effective February 27, 2026. EPA is also establishing expiration dates of August 26, 2026 for certain… - Imazapyr Kidney Tolerance Increase: benefit, low. EPA is finalizing increased tolerances for imazapyr residues in kidney commodities: Cattle, goat, horse, and sheep kidney tolerances are finalized at 0.3 ppm (changed from 0.20 ppm in the proposal), effective February 27, 2026. EPA notes the change reflects OECD rounding class practice. - Removal of Expired Pesticide Tolerances: benefit, low. EPA is removing from the CFR the tolerances that have already expired for several pesticides, including endosulfan, methidathion, pendimethalin (Bermuda grass entries), boscalid (Endive, Belgian), spiromesifen (soybean entries), and mandipropamid (Basil, dried), effective February 27, 2026. Where E… - Effective Date and Objection Deadline: mixed, low. The final rule is effective on February 27, 2026. Any objections and requests for hearings must be filed and received by the EPA Hearing Clerk on or before April 28, 2026, in accordance with 40 CFR part 178. ## Related documents - [2026-19071](https://policyrisk.com/federal-register/2026-19071): Partial Repeal of the Carbon Pollution Standards for Fossil Fuel-Fired Electric Generating Units, 2026-09-17 - [2026-19072](https://policyrisk.com/federal-register/2026-19072): Rescission of the Greenhouse Gas Findings for Fossil Fuel-Fired Power Plants and Repeal of Regulations for Power Plant Greenhouse Gas Emiss…, 2026-09-17 - [2026-18317](https://policyrisk.com/federal-register/2026-18317): Updated Definition of “Waters of the United States”, 2026-09-09 - [2026-14112](https://policyrisk.com/federal-register/2026-14112): Amendments and Nonconformance Penalties for Model Year 2027 and Later Heavy-Duty Highway Engines and Amendments to Inducement Provisions fo…, 2026-07-14 - [2026-13667](https://policyrisk.com/federal-register/2026-13667): Minor New Source Review Program Air Permitting Public Participation Requirements for State Implementation Plans, 2026-07-07 - [2026-13263](https://policyrisk.com/federal-register/2026-13263): Revisions To Establish the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) for Public Water Systems, 2026-07-01 ## Sources - [2026-03942 on federalregister.gov](https://www.federalregister.gov/documents/2026/02/27/2026-03942/pesticide-tolerances-implementing-registration-review-decisions-for-certain-pesticides-maleic) - [2026-03942 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-02-27/pdf/2026-03942.pdf) ## Related - [Previous: 2026-03940, Rescission of Interim Final Rule, Evaluative Rating: Impact of Medication](https://policyrisk.com/federal-register/2026-03940) - [Next: 2026-03944, Implementing Statutory Addition of Certain Per- and Polyfluoroalkyl Substances…](https://policyrisk.com/federal-register/2026-03944) - [All Federal Register documents](https://policyrisk.com/federal-register) Source: PRIA, https://policyrisk.com/federal-register/2026-03942 (as of 2026-06-11).