On-site non-potable water systems. Systems for the use of rainwater|Re-usable, Water supply, Drainage, Chemical composition, Pipework systems, Microorganisms, Leak tests, Maintenance, Instructions for use, Water storage, Pumps, Water pumps, Control equipment, Water testing, Rainfall, Water supply and waste systems (building, Water treatment, Installation, Storms, Water, Marking, Water supply (buildings), Flow rates, Performance testing, Rainwater control systems, Tanks (containers), Design, Water purification, Quality