小型系统在治疗和交付方面面临许多障碍 优质饮用水。许多小水 供应商从未具备财务或运营能力 解决水质和合规问题，以及 顾客经常不得不忍受劣质的饮料 不符合监管标准的水。 中央治疗和分配可能不适用于儿童 许多小型系统。考虑到<1%的净化水实际上是 摄入，处理系统中的所有水，以达到最佳饮用效果 水的规格并不代表水的实际用途 资源，特别是考虑到越来越严格的法规， 水的过度处理成本增加，这将不会 在配送过程中被摄入、水质恶化和损失， 减少优质水源的获取。两层 系统中，只有很小比例的水被消耗 它的质量是最高的。 瓶装水的使用或使用点和入口 分散的两层体系中的方法代表了 小型社区实现更安全和更高质量的机会 饮用水比他们原本可能拥有的更多 快速且成本合理。尽管合规障碍重重 必须克服，目前正在使用的应用程序被证明是 他们正在提供有助于决定未来的数据 操作、监管和合规指南。包括29个参考文献、表格和图表。

Small systems face numerous obstacles to treating and delivering high-quality drinking water. Many small water providers have never had the financial or operational capability to solve water quality and compliance problems, and their customers have often had to put up with poor-quality drinking water that does not meet regulatory standards. Central treatment and distribution may not be feasible for many small systems. Given that <1% of treated water is actually ingested, treating all of the water in a system to optimal drinking water specifications does not represent a practical use of resources, especially in light of increasingly stringent regulations, higher costs of excess treatment of water that will not be ingested, water quality deterioration and losses during distribution, and reduced access to high-quality source water. In a two-tier system, only the small percentage of water that is consumed is treated to the highest quality. The use of bottled water or point-of-use and point-of-entry approaches in a decentralized, two-tier system represents an opportunity for small communities to achieve safer and higher-quality drinking water than they might otherwise have had, more quickly and at reasonable cost. Although compliance obstacles must be overcome, applications currently in use are proving to be successful and are providing data that will help determine future guidelines for operation, regulation, and compliance. Includes 29 references, tables, figures.