What is rainwater harvesting?
Think solar panels, but for water
We describe rainwater harvesting as one of the three R’s of sustainability – Recycling, Renewable energy, Rainwater harvesting. Like solar panels, blue bins and low-energy lightbulbs, rainwater harvesting is an easy way to make your home or business more sustainable, whilst also harnessing a local renewable resource.
Things have moved on
More than simply a water butt, a rainwater harvesting system helps you reduce your dependence on mains water by collecting large volumes of rainwater from your roof, filtering it, storing it and pumping it to where it’s needed around your property. This cuts your water bills and water-related CO2 footprint by up to 63%. Moreover, rainwater harvesting also helps reduce localised flooding incidents by limiting the flow of rainwater into storm drains, leading to less property damage.
At evridrop we specialise in installing rainwater harvesting systems, both above ground and below and the good news for you is, half the work is already done!
You’re already collecting rainwater, then losing it all
Your home, office, factory or building is one big rainwater collector. Every time it rains hundreds of litres of fresh, clean water drain off the roof and down the pipes, the problem is all that fresh, naturally filtered water then goes down the drain and into the sewers. All the while, you’re paying for mains water to flush toilets, wash clothes, clean your car and water the garden.
All you need to do is divert that rainwater to a tank and pump it to where you need it and you’re suddenly saving up to 50% on your water bill, 63% if you’re a business! At the same time you’re cutting your CO2 emissions by the same percentage.
Domestic mains water usage replaceable by rainwater
Commercial mains water usage replaceable by rainwater
Use rainwater, cut your carbon footprint
You may not think about your water usage as a way to reduce your carbon footprint, but It takes quite a bit of energy to treat and deliver mains water to a property. The energy required is 1.2kWh of electricity for every cubic metre of water, this results in 0.65kg of CO2 emissions for every cubic metre you use. In English, this means that each individual in your property will produce 35.5kg of CO2 through mains water usage every year. Rainwater harvesting alone can more than halve this, just get in touch and we’ll pop round for a site assessment.
Avoid the hose pipe ban
As we build more properties so the demand for mains water supply continues, this coupled with hotter and dryer summers means hose pipe bans are likely to become a common occurrence. A rainwater harvesting system provides access to stored rainwater all year round, pumped to a garden tap and usable as a perfectly legal water source during a ban, or at any time. At evridrop we can also hook your tank up to an irrigation system to provide automated watering for your garden.
Still flushing your toilet with drinking water?
Flushing the toilet in your home makes up a third of all the water you use and if you’re not using rainwater then you’re flushing with drinking water. In commercial premises, 63% of water usage is for urinals and WCs, presenting businesses with an opportunity to cut their water bills and carbon emissions by two thirds simply by installing a rainwater harvesting system.
Less chemicals. Less detergent. Less pollution.
Filtered rainwater is the perfect partner for your washing machine, it’s naturally soft (containing no calcium or magnesium deposits) and leaves no limescale in the system. Washing your clothes in soft water also requires less detergent and energy, helping to reduce water pollution and your carbon footprint.
Is your house up to scratch?
The Government’s Code for Sustainable Homes was introduced in 2008 to tackle mains water stresses and make rainwater harvesting a requirement on all new builds. It’s made up of six levels, each one representing a maximum daily use of mains water per person:
1 and 2 – 120 litres
3 and 4 – 105 litres
5 and 6 – 80 litres
From 2016 the standard expected on all new builds is Level 6, 80 litres per person per day. To achieve this level of sustainability a rainwater harvesting system must be installed. In the not too distant future, Rainwater harvesting will be the norm on most buildings in the UK. Remember when solar panels where seen as odd? Now they’re the norm, and just like solar panels help you go ‘off grid’, rainwater harvesting systems do the same for water (literally) – giving you more control over how use source and use the earth’s most precious resource.