RAINWATER HARVESTING Domestic and Commercial Solutions

‘Protecting the environment by delivering reliable wastewater solutions’

Domestic Rainwater Harvesting pp 3 - 10

Commercial Rainwater Harvesting pp 11-12

Developer’s Rainwater Harvesting pp 13-15

INDEX

Domestic Rainwater HarvestingAn introduction

The Need for Rainwater Harvesting

In todays climate, water is an expensive commodity. As a result of an increase in demand, and water reserves continuing to decline, the amount available to us is falling and water charges are continuing to increase year on year.Despite the fact that England and Wales appear to have plenty of rain, our growing population and the potential changes in climate mean that our water resources are under pressure. The large number of new houses due to be built over the next few years will increase the competition for available water between the environment and people, especially in the South-East of England which has low water resource availability.Reducing demand for mains water can help to reconcile these competing needs. One way of reducing demand is to use a rainwater harvesting system to provide water for domestic uses.

Our Climate

Climate change is forecast to have a two-fold impact on water resources. It will reduce the amount of water available for public supply and it will increase customer demand for water, particularly in the garden. The latest predictions also suggest that we can expect warmer winters and drier, hotter summers.

Legislation

Legislation was introduced by the Government in 2006 to give water companies the right to compulsorily meter all of its customers. Currently 40% of UK residents have a water meter installed, however this legislation is looking to increase this to 90% over the next 10 years to provide an estimated water saving of 10-15%.

The Benefits

Up to 50% of the drinking water that is currently used can be safely replaced with rainwater without any inconvenience. Rainwater, often referred to as soft water, can be efficiently harvested and used for applications such as laundry, flushing toilets, general cleaning, car cleaning and garden irrigation.

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Home packageThe ideal solution for use in the home and garden

Carat underground tank Maxi telescopic dome shaft with an adjustable lid 750 mm - 1,050 mm

(29.5 - 41.3 inch) Filter package: – Internal self-cleaning filter – Inflow stilling system for slowing the water inflow – Overflow siphon and rodent guard

ECO-Plus pump package: – Water supply control unit – Floating water extraction unit – DN 100 wall duct – 12m Suction pipe

Carat underground tank packageECO-Plus

Economic package solution ●

Patented filter technology and in- ●

house pump system with automatic switch-over to mains water supplyEasy to assemble due to modular ●

componentsFloat switch controlled ●

Low visual impact ●

Scope of supply

Lid for vehicle loading available

Suitable for pedestrian loading

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1

2

3

1

3

2

4

* Set consisting of two Carat S underground tanks

Capacity/ltr. 3,750 4,800 6,500 7,500* 9,600* 13,000*

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* see page 6 for detailed information on the pump and filter system

Garden packageThe simple garden solution with submersible pump system

Carat underground tank Mini telescopic dome shaft with an adjustable lid 750 mm - 950 mm Filter package – Internal Universal Filter 3 – Inflow stilling system for controlling the water inflow – Overflow siphon and rodent guard

Garden Comfort pump package Integra-Duo® 1100 Submersible pump, with protection against dry running automatic start / stop function

– Floating water extraction unit – Water hose connection box – 10 m of pressure hose

Simple to install and use ●

Use a simple hose connection socket and ●

pressure sensitive pump for automatic water activationLow visual impact ●

Reduces electricity consumption by ●

using a pressure drop activation system, so that electricity is only used when required

Scope of supply Suitable for pedestrian loading

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2

4

3

4

1

2

3

* Set consisting of two Carat underground tanks

Capacity/ltr. 2,700 3,750 4,800 6,500 7,500* 9,600* 13,000*

Carat underground tank package Garden Comfort

Home packageThe ideal solution for use in the home and garden

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* see page 6 for detailed information on the pump and filter system

Lid for vehicle loading available

Pump system for the Home Package

The good value complete solution.

Pump system for the Garden Package

Improved operating convenience through automatic pump control. Submersible or dry mounted suction pump ●Integra-Duo® 1110 Floating water extraction unit ● ● Water hose connection box10 m pressure hose (not shown) ●

Pump and control unit with auto switch over ●to mainsWall duct DN 100 ●Floating water extraction unit ●PE suction pipe 12 m (not shown) ●

New filter

technology

Filter package for the Garden Package

For use in the home and garden - 100 % water yield

Scope of supply:– Internal Universal Filter 3– Inflow stilling system for controlling the water inflow – Overflow siphon and rodent guard– Spannfix pipe connection sleeve

Filter package for the Home Package

For use in the home and garden - self-cleaning design

Scope of supply:– Internal Optimax-Pro (self cleaning) filter– Inflow stilling system for controlling the water inflow – Overflow siphon with rodent guard function– Spannfix pipe connection sleeve

The self-cleaning Optimax-Pro Filter can be integrated into the basic Carat tank. The system is convenient and low maintenance with a self-cleaning filter enabling up to 95 % water yield. Tank and filter overflow are connected to the sewer network.

The tank that turns its head The fully adjustable tank head has been designed to rotate fully. This means that the tank can be installed at any angle and the head adjusted to be aligned to the piping. The lid can also be tilted by up to 5° ensuring it can be adjusted to fit smoothly into the landscape reducing its visual impact.

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Filter and Pump Packages

The Rondus underground tank is stable due to its unique shape.

It can be completely installed in groundwater and in cohesive soil (e.g. loam). The tank can be used as part of the Home or Garden package instead of the Carat tank.

2190 mm 2880 mm

2480

mm500 mm

1380

mm

Rondus 3,000 ltr.

Weight: 120 kg

Rondus 2,000 ltr.

Ø 650 mm insideØ 650 mm inside

2010

mm

1280

mm

480 mm

Weight: CAR 150 kg HGV 190 kg

Buoyancy control

min. 80 cm

Optional anti-buoyancy measure for groundwater installations- Geotextil membrane

Capacity/ltr. 2,000 3,000 Increased capacity can be achieved by multiple tanks

Rondus rainwater underground tankSuitable for vehicle loading (without tank cover)

Rondus rainwater underground tankLorry-bearing (without tank cover)

Capacity/ltr. 3,000

Increased capacity can be achieved by multiple tanks

Telescopic dome shaft The lid can also be tilted by up to 5° ensuring it can be adjusted to fit smoothly into the landscape reducing its visual impact.

Rainwater underground tank Rondus The all-rounder - can be completely installed in groundwater

Submersible or dry mounted suction pump ●Integra-Duo® 1110 Floating water extraction unit ● ● Water hose connection box10 m pressure hose (not shown) ●

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Cast iron cover for vehicle loading available

Rondus Filter package– external Universal-Filter – Inflow stilling system for controlling the water inflow – Overflow siphon, small rodent guard

Herkules-Tank® For overground and underground installation

N.B. Protect tanks from frost when installed above ground

1,600 ltr.

Technical data

Capacity: 1,600 L Min Ø: 1,090 mm Max Ø: 1,350 mm

Height: 1,600 mm Material: reinforced Polypropylene (UV stable and 100% recyclable) Weight: approx. 60 kgs Connections: each 2 x DN 70, DN 100 and DN 200 for standard pipe

The Herkules tank is versatile and can be fitted above ground, below ground or in a cellarDue to its strong design and the reinforced material, the tank can be safely installed in areas of high groundwater, provided the appropriate installation instructions are strictly followed.

Patent no. in Europe 0870877 and USA no. 5878

Tank overflow pipe to drain or percolation area

Underground duct for water delivery to hose box, and for cables to house

Sample illustration for Herkules Garden use

Rainwater falls down the eaves gutter and is filtered by the external filter Clean rainwater is collected in the Herkules-Tank®The tank volume can be increased by using extension sets Water is pumped from the tank to the garden hose connection boxSupport pipe provide stability for underground installationThe Tank dome enable easy access to the tankGarden hose connection box for gar-den irrigationDelivery hose conducts water to the garden hose connection box

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2

3

4

5

6

1

2

3

4

5

67

8

500 ltr.

Top-Tank

Suitable for above ground installations in the garden or cellar.Always empty the tank when there is a danger of frost!

Patent no. in Europe 0870877 and the USA no. 5878907

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Commercial Rainwater Harvesting

Our Commercial Rainwater Harvesting System is ideal for a wide range of businesses, whether commercial or industrial. The main benefits are:

- The harvested water can be used for toilet flushing, laundry, general cleaning, washing cars and watering plants. Not to be used in applications where the water is used for human consumption such as drinking and food preparation.

- Helps alliviate flood risks by collecting excess water

- Provides a source of usable water during periods of lower rainfall

The Enhanced Capital Allowance (ECA) scheme has now been accredited to WPL’s new commercial rainwater harvesting system – the Eco Range.

The ECA has been accredited to the WPL Eco Range by The Carbon Trust on behalf of the government. The Carbon Trust is a private company set up by the government to promote solutions tackling climate change.

The ECA scheme allows businesses to claim 100% first year tax relief on their qualifying capital expenditure. Businesses can write off the whole of the capital cost of their investment against their taxable profits of the period during which they make the investment (for further information please visit www.eca.gov.uk/energy).

Tank Size Calculation

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Typical installations for our commercial rainwater harvesting system1. Annual rainwater yield:

Annual precipation value l/m2 x Projected roof area m2 x roof type correction factor = Rainwater yield l/year

2. Annual rainwater dema

Toilets, per person, per year 11800 ltr x number of occupants =

Laundry, per person, per year 3700 ltr x number of occupants =

Cleaning, per person, per year 800 ltr x number of occupants =

Garden, per m2 60 ltr x cultivated garden area m2 = Total Demand3. Tank size:Rainwater yield l/year + Total demand 21 days (safety reserve) 2

x 365 days

= Litre storage volume

Roof area including any projections (independent of roof type/slope)

Clay tiles, fired, glazed: 0.9 Slate, concrete, clay files: 0.8Flat roofd with gravel: 0.6

Example

Roof size: 100 m2 Area: PortsmouthOccupants: 4 Roof type : clay tilesCalculation:

Annual precipation value 750 x Projected roof area 100 x roof type 0.9 = Rainwater yield l/year 67,500

Annual rainwater demand:

Toilets, per person, per year 11800 ltr x number of occupants 4 = 47,200

Laundry, per person, per year

3700 ltr x number of occupants 4 = 14,800

Cleaning, per person, per year

800 ltr x number of occupants 4 = 3200

Garden, per m2 60 ltr x cultivated garden area m2 20

= 1200

Total Demand = 66,400

67,500 + 66,400 21 days (safety reserve)

2 x

365 days = 3852

TANK SIZE:

Commercial Rainwater Harvesting

‘Water is an increasingly expensive resource with mains, sewerage and trade effluent charges all rising.

Reducing your water consumption is one of the easiest and most inexpensive ways to achieve cost savings - just taking

simple measures can cut figures by 50%.’

(Envirowise http://www.envirowise.gov.uk/water)

Typical applications include

- Hotels- Pubs- Zoos- Marinas- Offices- Schools- Hospitals- Factories- Supermarkets- Universities- Industrial Buildings - large domestic applications...and more

Our Commercial Rainwater Harvesting System is ideal for a wide range of businesses, whether commercial or industrial. The main benefits are:

- The harvested water can be used for toilet flushing, laundry, general cleaning, washing cars and watering plants. Not to be used in applications where the water is used for human consumption such as drinking and food preparation.

- Helps alliviate flood risks by collecting excess water

- Provides a source of usable water during periods of lower rainfall

The Enhanced Capital Allowance (ECA) scheme has now been accredited to WPL’s new commercial rainwater harvesting system – the Eco Range.

The ECA has been accredited to the WPL Eco Range by The Carbon Trust on behalf of the government. The Carbon Trust is a private company set up by the government to promote solutions tackling climate change.

The ECA scheme allows businesses to claim 100% first year tax relief on their qualifying capital expenditure. Businesses can write off the whole of the capital cost of their investment against their taxable profits of the period during which they make the investment (for further information please visit www.eca.gov.uk/energy).

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Cellar tank Manufactured black polyethylene, thick walled, impact-resistant and weather proof . It can be extended in series - with steel tape bindings creating an above ground space-saving format.

Standard equipment:2 galvanised steel tape bindings, 1 manhole dome with cover Ø 450 mm1 inflow DN 1001 overflow DN 1002 connectors DN 100 (1 x right and 1 x left)

Capacity 1,700 l

WPL Commercial Eco Range

Benefits

- Fully packaged automatic system

- Features the latest in low noise self-priming pumps

- All units come with direct feed, duty assist and duty standby as standard

- Floating suction pump with a micro filter suspended beneath the surface to ensure the water taken is at the

optimum level of cleanliness.

- Full design and advisory service available & bespoke systems available for special requirements

- Tank range approved for the ECA includes 25m3, 50m3, 60m3 and 70m3

- Internal and external filters are are available for roof size from 200 m2 to 1500 m2

- Easily accessible ‘out of tank’ filters resulting in no confined space entry required for service and maintenance

Pump and controls come in two sizes:

Bespoke systems available for special requirements or application over 200,000L storage requirment

Carat Tank - used for applications up to 13,000l

Commercial Tank - used for applications from 13,000l to 200,000l Eco 150 Eco 400

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Tel: (+44) 0 845 4504819 Fax: (+44) 0 23 92242624 email: enquiries@wpl.co.uk

www.wpl.co.uk

WPL Limited Units 1 & 2 Aston Road

Waterlooville Hampshire PO7 7UX

United Kingdom

WPL Limited registered in England & Wales NI 2583411 VAT No. 568 3801 15. WPL Limited has a policy of continual product development and the above information may be subject to change without notice. WPL Limited are fully compliant with the British Water Code of Practice.

WPL Ltd - Environmental Wastewater Solutions

WPL provide innovative and reliable wastewater treatment, rainwater harvesting and grease management systems. WPL supply products for domestic, commercial and industrial markets as well as holding a prominent position as a supplier to the water utilities.

As an internationally recognised leader in the design, manufacture and supply of both standardised, and bespoke environmental solutions, WPL is dedicated to ensure the provision of high quality products and services. Highly qualified staff guide the customers through the purchasing process and offer strong after sales support, providing them with a fully satisfactory buying experience.

WPL rigorously fulfils its vision of protecting the environment by delivering reliable wastewater solutions. A strong focus on quality and compliance ensures that all wastewater treatment systems are designed to work within the guidelines of the British Water Code of Practice and exceed all present and proposed discharge consent standards enforced by the Environment Agency, SEPA and other European regulatory authorities.