The example specifications below have been put together considering cost, the performance and availability of relevant fittings and appliances and the end-user attitudes to these fittings. The Water Efficient Product Labeling Scheme is a comprehensive and extensive database of water efficient products and is a good place to start looking for products for a water-efficient home.

Strategies for meeting water consumption targets can be broadly divided into fittings-based and recycling-based strategies. Fittings-based strategies rely on smart specification of efficient fittings and may add to the cost of a new home, but how much will largely depend on which fittings are chosen (CLG estimates £125 for a home meeting CSH Level 3 or 4). Recycling-based strategies can be used in combination with efficient fittings to achieve challenging water consumption target of Code Levels 5 and 6.

Here are several example specifications, using different strategies to meet Code level 3 and above:

 

Scenario 1

Scenario 2

Scenario 3

Scenario 4

Scenario 5

Scenario 6

Strategy, Code level

Fittings-based, Code level 3/4

Fittings-based, Code level 3/4

Fittings-based, Code level 3/4

Fittings-based, Code level 3/4

Fittings-based, Code level 5/6

Recycling-based, Code level 5/6

WC

4 (single flush)

4/2.6 (dual flush)

5/3 (dual flush)

6/4 (dual-flush toilet)

4/2.6 (dual flush)

6 (supplied by greywater)

Taps (excluding kitchen taps)

4

5

4

4

1.6

3

Bath

180

155

180

180

155

155

Shower

8

8

8

8

6

7

Kitchen sink taps

6

8

6

6

3

4

Washing machine

8.17 (not supplied)

8.17 (not supplied)

8.17 (not supplied)

6.14 (supplied)

6.14

8.17 (not supplied)

Dishwasher

1.25 (not supplied)

1.25 (not supplied)

1.25 (not supplied)

1.25 (not supplied)

0.67

1.25 (not supplied)

Water Recycling

0 (not supplied)

0 (not supplied)

0 (not supplied)

0 (not supplied)

0 (not supplied)

26.52 (greywater supplying toilet)

Predicted per capita consumption (Code)

104.65

99.81

103.28

103.43

79.99

79.84