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
Link: BS EN 16941-1:2018 On-site non-potable water systems Systems for the use of rainwater
Source: BSI Standards

