Drinking our Rivers Dry? How behaviour change can help save How - - PowerPoint PPT Presentation

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Drinking our Rivers Dry? How behaviour change can help save How - - PowerPoint PPT Presentation

Nov 28, 2023 222 likes •504 views

Drinking our Rivers Dry? How behaviour change can help save How behaviour change can help save the Kennet............... www.ech 2 o.co.uk Water use needs to be reduced Swindon, where the McRobie family live, is in the South of England

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SLIDE 1

Drinking our Rivers Dry? How behaviour change can help save How behaviour change can help save the Kennet...............

www.ech2o.co.uk

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SLIDE 2

Water use needs to be reduced

  • Swindon, where the McRobie

family live, is in the South of England and is classified by the Environment Agency as under severe water stress

  • It takes most of its water from a

borehole that also feeds the River Kennet, and the effect on th i d t f th

x

the river downstream of the borehole is stark

www.ech2o.co.uk

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SLIDE 3

Logging the McRobie family’s water use

  • A data logger shows the amount of water that has

passed through a meter over a 15 minute period

  • By analysing the raw data, overall daily consumption

can be calculated

  • By comparing the data with the family’s movements a

picture can be built up of where they are using the p p y g most water

  • The following slides are a snapshot of the data we

g p collected and analysed

www.ech2o.co.uk

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SLIDE 4

The McRobie family’s usual water consumption consumption

www.ech2o.co.uk

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SLIDE 5

Average daily use = 443 litres

700 600 700 500 300 400 200 100

www.ech2o.co.uk

14/07/2011 15/07/2011 16/07/2011 17/07/2011 18/07/2011

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SLIDE 6

Analysing the data - before

  • Data was analysed from five full days of use, Thursday

July 14th - Monday July 18th

  • Average was 443 litres per day. The range was 253 –

608 litres a day

  • Marie is at home during the day so on some weekdays

washing or cleaning is done during the day

  • It can be seen that showering and bathing is

sometimes in the morning and sometimes in the evening, and the later start times on Sunday

  • The next four slides show water use at 15 minute

www.ech2o.co.uk

intervals for Friday - Monday

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SLIDE 7

Water Usage Fri 15th July 2011

50.0 60.0

Water Usage Fri 15th July 2011

30.0 40.0 es used 10.0 20.0 Litre 0.0 00:00:00 00:45:00 01:30:00 02:15:00 03:00:00 03:45:00 04:30:00 05:15:00 06:00:00 06:45:00 07:30:00 08:15:00 09:00:00 09:45:00 10:30:00 11:15:00 12:00:00 12:45:00 13:30:00 14:15:00 15:00:00 15:45:00 16:30:00 17:15:00 18:00:00 18:45:00 19:30:00 20:15:00 21:00:00 21:45:00 22:30:00 23:15:00 Time Time

www.ech2o.co.uk

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SLIDE 8

120 0

Water Usage Sat 16th July 2011

80.0 100.0 120.0 ed 40.0 60.0 Litres use 0.0 20.0 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 0:00 5:00 00:00 00:45 01:30 02:15 03:00 03:45 04:30 05:15 06:00 06:45 07:30 08:15 09:00 09:45 10:30 11:15 12:00 12:45 13:30 14:15 15:00 15:45 16:30 17:15 18:00 18:45 19:30 20:15 21:00 21:45 22:30 23:15 Time

www.ech2o.co.uk

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SLIDE 9

80 0

Water Usage Sun 17th July 2011

50 0 60.0 70.0 80.0 d 20 0 30.0 40.0 50.0 Litres used 0.0 10.0 20.0 Time

www.ech2o.co.uk

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SLIDE 10

Water Usage Monday 18th July 2011

60 50 30 40 tres used 10 20 Lit : : : : : : : : : : : : : : : : : : : : : : : : : 1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 : 9 : 1 : 1 1 : 1 2 : 1 3 : 1 4 : 1 5 : 1 6 : 1 7 : 1 8 : 1 9 : 2 : 2 1 : 2 2 : 2 3 : Time

www.ech2o.co.uk

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SLIDE 11

The leak................

A l d th d t ld l i d

  • As we analysed the data we could see unexplained

use happening during the night. This can be seen on the graphs as about 1 litre of use every 30 minutes the graphs as about 1 litre of use every 30 minutes

  • We assumed it was a dripping tap or WC overflow, until

e ere rang on T esda morning to hear the hose we were rang on Tuesday morning to hear the hose had been running “all night”. It was the hose trigger letting by until it was finally pushed right off! letting by until it was finally pushed right off!

  • Actually it was only from about 5 am but the effect on

the graph is dramatic the graph is dramatic...............

  • As is the fact that the family felt so bad about it they

virtually didn’t use any more water the rest of the day!

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virtually didn t use any more water the rest of the day!

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SLIDE 12

450

Water Usage Tues 19th July 2011

350 400 200 250 300 tres used 50 100 150 Lit 50 Time

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SLIDE 13

Running hose in 1.75 hours wasted 2484 litres, 5.6 days average water use!

3000 2500 3000 2000 1500 1000 500

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14/07/2011 15/07/2011 16/07/2011 17/07/2011 18/07/2011 19/07/2011

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SLIDE 14

The Mcrobie family's water consumption after understanding where and how they use water and how where and how they use water and how best to reduce their use

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SLIDE 15

New average daily use = 227 litres %

  • a 49% reduction!

350 250 300 150 200 50 100 50 21/07/2011 22/07/2011 23/07/2011 24/07/2011 25/07/2011

www.ech2o.co.uk

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SLIDE 16

Analysing the data - after

  • Data was analysed from five full days of use, Thursday

July 21st - Monday July 25th

  • Average was 227 litres per day. The range was 125 –

313 litres a day

  • Water usage is still spread across the day but with less

used in the morning and evening times showing the reduction in shower times and bath depths

  • The next five slides show water use at 15 minute

intervals for Thursday - Monday

www.ech2o.co.uk

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SLIDE 17

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SLIDE 18

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SLIDE 19

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SLIDE 20

Water Usage Sun 24th July 2011

70 50 60 d 20 30 40 Litres used 10 20 00:00:00 00:45:00 01:30:00 02:15:00 03:00:00 03:45:00 04:30:00 05:15:00 06:00:00 06:45:00 07:30:00 08:15:00 09:00:00 09:45:00 10:30:00 11:15:00 12:00:00 12:45:00 13:30:00 14:15:00 15:00:00 15:45:00 16:30:00 17:15:00 18:00:00 18:45:00 19:30:00 20:15:00 21:00:00 21:45:00 22:30:00 23:15:00 Time

www.ech2o.co.uk

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SLIDE 21

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SLIDE 22

Comparison of water use before and after

700

Comparison of Water Usage Wed 13th - Mon 25th July 2011

500 600 300 400 Litres used 100 200 Wednesday 13th July Wednesday 20th July Thursday 14th July Thursday 21st July Friday 15th July Friday 22nd July Saturday 16th July Saturday 23rd July Sunday 17th July Sunday 24th July Monday 18th July Monday 25th July Time

www.ech2o.co.uk

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SLIDE 23

Comparison of water use before and after

W h h W d d b f d f h

  • We show the Wednesday before and after to show

how much water was used during the filming! (W d d 20th J l d t f fil i ) (Wednesday 20th July was date of filming).

  • The marked difference in use can be seen
  • On the Sunday after filming the family used more

than the Sunday before filming, though still only 300 y g, g y litres between them for the day.

  • Most of their excessive use was deep baths and

Most of their excessive use was deep baths and long showers.

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SLIDE 24

The family’s water bill if on a meter

£1 77/

3 (C

f 2011/12 f Th W )

  • £1.77/m3 (Cost for 2011/12 from Thames Water)
  • 227 litres/day = 82.9m3/year. Metered costs = £147
  • Standing charge for water = £27. Standing charge for

sewerage = £48 g

  • At 227 litres/day total cost = £222
  • (At 300 litres/day = 109 5m3/year = £194 plus
  • (At 300 litres/day = 109.5m3/year = £194 plus

standing charges. At 300 litres/day total cost = £269)

  • The family currently pay over £400 via the rateable

www.ech2o.co.uk

value

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SLIDE 25

With thanks to the McRobie family - Jamie Marie Matthew and Olivia Jamie, Marie, Matthew and Olivia

www.ech2o.co.uk

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SLIDE 26

www.ech2o.co.uk