Runoff Rain Water Harvesting- Allegiance Water Management 

Rainwater harvesting is the practice of collecting and storing rainwater from roofs or other surfaces for later use. The collected water can be used for irrigation, flushing toilets, or even for drinking after proper treatment.

 It helps conserve water, reduces reliance on municipal supplies, decreases flooding and erosion, and can lower water bills. It also mitigates stormwater runoff, which can lead to water pollution​(Valley Water)​(NTOTank).

Yes, but specific filtering and plumbing requirements must be met to ensure its safety, especially for uses like toilet flushing​(Valley Water).

The amount depends on your roof size and rainfall. For example, one inch of rain on a 1,000 square foot roof can yield approximately 600 gallons of water​ (Valley Water).

Yes, rainwater harvesting is practical in urban settings, although pollution levels may be higher. Using devices like first-flush diverters can improve water quality​(NTOTank).

6.What types of roofs are suitable for rainwater harvesting? 

Metal roofs, slate tile roofs, composite shingle roofs, and FDA-approved EPDM roofs are considered ideal​(NTOTank).

7.What are the major components of a rainwater harvesting system? 

Key components include collection surfaces, gutters, downspouts, storage tanks, and treatment systems​(Valley Water).

 Yes, retrofitting a rainwater harvesting system is possible, although installation costs may vary based on the existing plumbing​(NTOTank).

 It reduces municipal water use, lessens energy consumption for water treatment, and helps mitigate storm water runoff, contributing positively to water conservation efforts​(

NTOTank).

When the tank is full, excess rainwater is typically diverted away to prevent overflow​ (NTO Tank).