Know the key technologies: RO, UV, UF, and Activated Carbon, each suited for specific contaminants.
I Look for NSF, WQA, or ISI certifications and review performance data for efficiency against various contaminants.
Assess purifier capacity, installation requirements, and suitability for household size and water source.
Consider filter replacement frequency, electricity usage, and after-sales service availability.
Gain insights from real-world user experiences and detailed expert reviews to gauge reliability and performance.