Read more about the importance of filtration in a rainwater harvesting system

Read more about the water quaity from of our rainwater harvesting systems.

Not sure which tank you need?
Use our calculator to find out.

Learn about looking after a rainwater harvesting system.

RainSava above ground
Simple, effective above ground garden systems from 1000 litres
Use Me For
watering can
car washing
Garden Rainwater Harvesting system
  • Easy maintenance (Wisy advanced down pipe filters offer easy cleaning)
  • Submersible automatic start/stop pump.
  • Simple installation
  • Cleanest water possible due to:
    • Advanced Wisy filtration removing debris at source – only clean filtered water enters the tank
    • Pre-tank Filtration to 0.28mm
    • Suction filter with 0.3mm mesh filter
BS8518 Compliant Rainwater systems
BS8518 Compliant
Easy to clean filter
Easy to Clean
0.2mm Fine Mesh Filter
0.28mm Mesh Filter

Watering plants and washing the car with recycled rainwater saves money on your water bill, protects the environment and helps to reduce stormwater runoff.

The RainSava Above Ground garden rainwater harvesting system meets all the expectations of the keen gardener. The collected water is crystal clear due to the advanced filtration offered by the WISY® down pipe filter. Tanks sizes range from 400 to 30,000 litres and can be easily linked together. The system includes either a submersible or suction pump, and can be connected to a number of taps and outlets. No mains water top-up means the system is exempt from any hosepipe bans.

Tank (Litres)Height (mm)Diameter (mm)
1000L12001650 x 650 rectangular
2000L19001200
2500L18001400
3000L21351400
4000L18751900
5000L21851900
6000L25001900
6500L15002600
7000L18202400
8500L20632600
10000L25602400
12500L26502600
14000L29002600
15000L35502220
16800L32502310
20000L36002850
2080041502600
2200026003450
25000L46502700
26000L32003450
30000L36503450

Before ordering a tank, check that there is a firm level base with sufficient space to accommodate it.

HINT: Depending on where the tank is sited, you may wish to hide it from view. This can easily be achieved by screening with fencing or trellis and/or judicious planting.

Read more about the importance of filtration in a rainwater harvesting system

Read more about the water quaity from of our rainwater harvesting systems.

Not sure which tank you need?
Use our calculator to find out.

Learn about looking after a rainwater harvesting system.