Rainwater Disinfection After Roof Contamination Events: Timing, Methods, and Safety Checks
Rainwater disinfection after roof contamination events should begin by stopping collection, removing contaminated debris, flushing the roof and first-flush diverter, and treating stored water with a method suited to its intended use. Bird droppings, dead animals, smoke residue, floodwater, and roof-cleaning chemicals can introduce pathogens or contaminants that ordinary chlorination may not remove.