Rainwater Harvesting at Home: What You Can Actually Use It For and What Filtration You Need
Key Takeaways Untreated rainwater hits your roof with COD 60-120 mg/L and suspended solids up to 200 mg/L — it is nowhere near drinkable straight from the barrel. A 3-stage system (sediment → carbon → UV) gets you to garden and toilet-flushing quality. Adding RO takes it to drinking standard, but the economics only stack up at scale. The smartes...