Public Water System (PWS): Refers to water systems which provide water to at least 15 service connections used by year-round residents or which provide water to at least 25 year-round residents, thus falling under the drinking water safety requirements of the federal Safe Drinking Water Act.
👇 ស្វែងរកឯកសាររៀននិងការងារគ្រប់ប្រភេទនៅទីនេះ៖
👇 ស្វែងរកពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖