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- Drinking water quality standards describes the quality parameters set for drinking water. Despite the truth that every human on this planet needs drinking water to survive and that water may contain many harmful constituents, there are no universally recognized and accepted international standards for drinking water. Even where standards do exist, and are applied, the permitted concentration of individual constituents may vary by as much as ten times from one set of standards to another. Many developed countries specify standards to be applied in their own country. In Europe, this includes the European Drinking Water Directive and in the United States the United States Environmental Protection Agency (EPA) establishes standards as required by the Safe Drinking Water Act. For countries without a legislative or administrative framework for such standards, the World Health Organization publishes guidelines on the standards that should be achieved. China adopted its own drinking water standard GB3838-2002 (Type II) enacted by Ministry of Environmental Protection in 2002. Where drinking water quality standards do exist, most are expressed as guidelines or targets rather than requirements, and very few water standards have any legal basis or, are subject to enforcement. Two exceptions are the European Drinking Water Directive and the Safe Drinking Water Act in the United States, which require legal compliance with specific standards. In Europe, this includes a requirement for member states to enact appropriate local legislation to mandate the directive in each country. Routine inspection and, where required, enforcement is enacted by means of penalties imposed by the European Commission on non-compliant nations. Countries with guideline values as their standards include Canada, which has guideline values for a relatively small suite of parameters, New Zealand, where there is a legislative basis, but water providers have to make "best endeavours" to comply with the standards, and Australia. (en)
- 飲用水水質標準規定飲用水檢測項目的數值。儘管所有人都需要攝取水才能存活，而水又可能含有有害物質，目前國際間仍沒有統一的規範，不同版本的標準某些個別項目有相當落差。 已開發國家適用於其國家的飲用水水質標準。例如，歐盟制定的歐洲飲用水指令 以及美国国家环境保护局（EPA）訂定的安全飲用水法。對於尚未制定相關立法或行政條例的國家，世界卫生组织公布相關準則以提供參考。 中华人民共和国生活飲用水卫生標準（GB5749-2006），由中华人民共和国卫生部、中华人民共和国国家标准化管理委员会於西元2006年頒布，公元2007年实行。 雖然存有飲用水水質標準，但各國法理基礎、執行程度不一，性質可能為目標、準則、或較嚴格的規章。 (zh)
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