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ISO 4789:2023PublishedGuidelines for wastewater treatment and reuse in thermal power plantsISO 5667-7:1993PublishedWater quality — Sampling — Part 7: Guidance on sampling of water and steam in boiler plantsISO/TS 21152:2024PublishedGuidance on water conservation techniques of circulating cooling water in thermal power plantsISO 22449-1:2020PublishedUse of reclaimed water in industrial cooling systems — Part 1: Technical guidelinesISO 22449-2:2020PublishedUse of reclaimed water in industrial cooling systems — Part 2: Guidelines for cost analysisISO 22524:2020PublishedPilot plan for industrial wastewater treatment facilities in the objective of water reuseISO 23817:2026PublishedShips and marine technology — Ballast water management systems (BWMS) — Procedures for commissioning and testing BWMS using electrolytic methodsISO 5667-10Under developmentWater quality — Sampling — Part 10: Guidance and requirements on sampling of waste waterISO/DIS 25423Under developmentGuidelines for treatment and reuse of petroleum refinery wastewater