Access to clean water (SDG 6) is a global challenge, with 2.2 billion people lacking safe drinking water (WHO, 2023). Water quality analysis plays a critical role in monitoring, protecting, and improving water resources to meet this goal.

Well water, used by so many people, bypasses municipal treatment systems, raising critical safety concerns. This article evaluates its drink ability through the lens of testing reliability, comparing DIY kits and professional lab analyses, with evidence from EPA guidelines and peer-reviewed studies.