RAINWATER HARVESTING (Updated May 2025)

In 2017, I installed a completely automatic system for collection, storage, filtration, treatment, and usage of rain water. If there is no stored rainwater the entire system automatically switches to a mains supply. It collects 4.5 tonnes of water for every inch of rain which falls on my roofs. Multiple water butts can be linked with other tanks by buried garden hose which forms a syphon which allows enhanced water storage whilst the water butts retain any debris (works perfectly and has done so for 8 years). After many years of trails I conclude that the rainwater harvesting system in my own home in Norfolk, England, is robust and durable, I sell all of the pumps needed to run this system through my websites.

For just boosting water from a water butt or from an outside tap you can buy a WrightChoice Fully Automatic 12 volt Garden Booster from the  WrightChoice/uk.com website. BUY NOW

For a fully automatic whole house solution using rainwater to flush toilets and a garden hose at mains pressure visit WrightChoice/uk.com

Summer Rainwater Harvesting

In my home, the garden and car washing takes so much water, so there was little left to supply the house. In the winter there is lots of water for toilets.

The system automatically switches from rainwater to mains water seamlessly but the rainwater also contained algae which blocked my filters.

In summer, my rainwater just supplies the garden, and the pumps installed in my garage double boosts the water – it supplies water at hosepipe pressure to my garden, and for car washing.

You can deliver ‘free’ water by hosepipe to your garden, your car, and windows (distilled water) and intermittent storms fill my 4,500-litre storage

Winter Rainwater Harvesting

In the autumn and winter, my water is not needed in the garden so I simply open a valve to supply my home with filtered rainwater. It supplied our washing machine, our toilets, showers, baths, and we use it for hot hand washing.

For car washing, the pumps can supply double boosted unfiltered rainwater via a tap outside our garage.

Fully Automated System

The pumps in our garage deliver water to the garden simply by opening the garden tap. The booster pumps switch on and off automatically. Simply turn off the tap and the pumps stop until you need water again.

In the winter, the pumps in the garage are started by demand for water in my home. If, for example, a toilet is flushed, the refilling of the toilet will be sensed by a SP2B in my loft which starts the SP2B in the garage plus a slave pump. Pumps in the garage continue to pump until the water used in flushing the toilet is replaced.

Should I run out of rainwater the cold water is automatically switched to mains water.

Despite living in one of the driest parts of the UK with an average of 650mm of rain a year, I can collect 14m x 14m x 650mm of water = 127.4 tomes of water every year.

100 tonnes of water a year = £500 in water saved!

Alan Wright
The inventor of the Shower Power Booster