大江大河对国民经济和社会发展具有举足轻重的影响，其一二级支流水量大、河道长、流域面积广，相 关地方和部门的治理力度大，水环境水生态治理取得明显成效，不少已达到美丽河湖的标准。三级至末 级的小微支流数量众多、分布广泛，既是水环境质量改善的重点和难点，也是美丽中国建设的毛细血管 和载体，特别是有的小微支流还具有独特的自然景观和文化价值，能够有效满足当地群众的亲水需求。 但是，当前一些地方的小微支流治理还存在一些不尽如人意的地方。例如有的小微支流水面上经常漂浮 着病死畜禽或垃圾，有的地方晴天"零存"雨天"整取"借雨排污情况屡禁不止，有的小微支流堤岸内外存 在垃圾粪污乱堆滥放现象，有的支流还没有被纳入监测管理体系且水质较差。 深化水环境治理。坚持两手发力，既保好水又治差水，加强日常巡查，保持河流岸线干净整洁、岸绿景 美。通过不断提高城镇雨污管道改造率和农村污水收集处理率，提升截污治污水平。开展入河排污口排 查整治，建立排污口监测监管体系。持续开展黑臭水体整治专项行动，健全返黑返臭防范机制。推进畜 禽粪污资源化利用，积极推广生态健康养殖，有效管控农业灌溉退水等农业面源污染入河。完善重点支 流突发水污染事件环境应急"一河 ...

Core Viewpoint - Hunan Liuyang Economic Development Zone is committed to improving water ecological environment quality through a comprehensive governance approach that integrates management, protection, and regulation, aiming for high-quality economic and social development while preserving ecological integrity [1] Group 1: Precision Governance - The zone has invested over 1 billion yuan in water environment governance, focusing on infrastructure improvements to cut off pollution at the source [2] - Twelve rain and sewage pipeline construction projects have been initiated this year, with a total investment of approximately 63.5 million yuan, and seven projects have been completed [2] - The zone has built the first sewage treatment plant in Hunan Province that meets surface water Class IV standards, with investments of 450 million yuan for the first phase and 440 million yuan for upgrades to existing plants [2][3] Group 2: Systematic Protection - The zone emphasizes coordinated governance of water resources, environment, and ecology, focusing on the ecological restoration of the Laodao River basin [4] - Recent efforts include dredging rivers to enhance self-purification capabilities and periodic cleaning of tributaries to reduce internal pollution [4] - A three-year action plan for improving Laodao River water quality is being developed, aiming for Class III water quality by the end of 2028 [5][6] Group 3: Strict Regulation - A comprehensive regulatory system is being established, including regular inspections and smart monitoring to enhance regulatory efficiency [7] - The zone has conducted inspections of 145 enterprises this year, resulting in 20 environmental violation cases, with two cases referred to law enforcement [7] - The introduction of a smart environmental protection platform allows for 24-hour online monitoring of water quality at enterprises and sewage treatment plants [7] Group 4: Future Directions - The zone plans to continue enhancing its integrated water environment governance system and advance the Laodao River water quality improvement action plan with higher standards and stricter requirements [8]