Coal ash and power-plant wastewater: deadline extensions and proposed relaxations (2025-2026) Case EPA has extended compliance deadlines in its 2024 limits on wastewater from coal-fired power plants, proposed to relax the limits on one wastewater stream while estimating annual savings of $446 million to $1.09 billion, and proposed a three-year extension of the closure deadline for large unlined coal-ash ponds, from 2028 to 2031. A separate April 2026 proposal would amend the coal-ash rule's legacy-impoundment provisions. Power-plant wastewater limits EPA's 2024 steam electric rule (89 FR 40198, May 9, 2024) set zero-discharge limits for three wastewaters at power plants: flue gas desulfurization wastewater, bottom ash transport water and managed combustion residual leachate. On Dec. 31, 2025 EPA finalized a rule that extends seven deadlines in the 2024 rule, lets facilities switch between compliance alternatives, and creates authority for site-specific alternative applicability and paperwork dates, with limited additional timing flexibility under both the 2020 and 2024 rules. On May 18, 2026 EPA proposed revising the 2024 limits for unmanaged combustion residual leachate at existing sources. EPA estimates the change would reduce costs by $446 million to $1.09 billion a year at a 3% discount rate. Coal ash disposal On Nov. 28, 2025 EPA proposed extending by three years, from Oct. 17, 2028 to Oct. 17, 2031, the deadline to complete closure of unlined coal-ash surface impoundments larger than 40 acres that operate under the alternative closure requirements. EPA extended the comment period on that proposal by 30 days, to Feb. 6, 2026, after receiving extension requests on Dec. 5 and Dec. 8, 2025. On April 13, 2026 EPA proposed "Legacy/CCRMU Amendments" to the coal-ash rule (91 FR 18968). It extended the comment period by 17 days, to June 29, 2026, after requests on April 17 and June 1, and said it would reopen comment on the federal coal-ash permit program proposal for 30 days in a future action. What the sources do not establish The sources reviewed are EPA notices; they contain no estimates of pollution effects and no statements from environmental groups, utilities or communities near coal-ash sites. The sources reviewed do not report whether the November 2025 and April 2026 proposals have been finalized. Perspectives Official position — EPA (as stated in Federal Register notices) EPA describes the 2024 wastewater rule as imposing stringent requirements, says its proposal would update the requirements for unmanaged leachate and reduce costs by $446 million to $1.09 billion a year, and says it is extending deadlines and adding site-specific flexibility. For coal ash, it proposes a three-year extension of the closure deadline for large unlined impoundments. Editorial read — The Author (site author) The Author's view is that delaying cleanup of unlined coal-ash ponds and wastewater controls puts the cost of pollution onto nearby communities. This is interpretation. The sources reviewed are EPA notices and contain no estimates of pollution effects or statements from affected communities, utilities or environmental groups, so the claim needs outside sourcing before publication. Research notes Open leads: (1) reactions from environmental groups and utilities, and any pollution estimates; (2) the final status of the November 2025 closure-deadline proposal and the April 2026 legacy-impoundment proposal; (3) the Jan. 30, 2026 correction to the deadline-extension rule and the Feb. 10, 2026 CCR management unit deadline rule, which are listed but not summarized here; (4) all points rest on Federal Register notices, which state EPA's own position. Note EPA presents the changes as updates to requirements it describes as stringent and gives cost estimates in the Federal Register. The sources reviewed contain no outside critic or industry statements and do not quantify any change in pollution, so those perspectives are open leads. Sources [1] Federal Register: Steam Electric Power Generating ELGs, Deadline Extensions (final rule) (https://www.federalregister.gov/documents/2025/12/31/2025-24102/effluent-limitations-guidelines-and-standards-for-the-steam-electric-power-generating-point-source) · 2025-12-31 [2] Federal Register: Steam Electric Power Generating ELGs, Unmanaged Combustion Residual Leachate (proposed rule) (https://www.federalregister.gov/documents/2026/05/18/2026-09895/effluent-limitations-guidelines-and-standards-for-the-steam-electric-power-generating-point-source) · 2026-05-18 [3] Federal Register: Disposal of Coal Combustion Residuals From Electric Utilities; Extension of an Alternative Closure Requirement Deadline (proposed rule) (https://www.federalregister.gov/documents/2025/11/28/2025-21597/hazardous-and-solid-waste-management-system-disposal-of-coal-combustion-residuals-from-electric) · 2025-11-28 [4] Federal Register: Disposal of Coal Combustion Residuals; Extension of Comment Period (Jan. 7, 2026) (https://www.federalregister.gov/documents/2026/01/07/2026-00084/hazardous-and-solid-waste-management-system-disposal-of-coal-combustion-residuals-from-electric) · 2026-01-07 [5] Federal Register: Disposal of Coal Combustion Residuals; Legacy/CCRMU Amendments (proposed rule) (https://www.federalregister.gov/documents/2026/04/13/2026-07061/hazardous-and-solid-waste-management-system-disposal-of-coal-combustion-residuals-from-electric) · 2026-04-13 [6] Federal Register: Legacy/CCRMU Amendments; Extension of Comment Period (June 2026) (https://www.federalregister.gov/documents/2026/06/12/2026-11885/hazardous-and-solid-waste-management-system-disposal-of-coal-combustion-residuals-from-electric) · 2026-06-12 Connections Related — DOE emergency orders keeping retiring coal plants open at ratepayers' expense Both ease the costs of keeping coal plants running: relaxed waste and wastewater rules here, DOE orders against retirement there. Same context — Environmental deregulation under EPA Administrator Lee Zeldin Specific water and waste rules within the broader Zeldin-era rollback. Same context — Power plant pollution rules: repeal of the 2024 mercury standards and of most greenhouse-gas standards (2025-2026) Air, carbon, water and waste rules for the same coal- and fossil-fired power plants.