Table 4.

Effectiveness of recommended changes

Green Impact Toolkit recommendation	Amount of carbon saved (gCO2eq)	Percentage decrease in carbon
Emailing an appointment notice instead of posting an appointment notice	9.8	92%
Emailing a referral letter instead of posting a referral letter	18.1	82%
Keeping and reusing scrap paper used in patient management instead of disposing of scrap paper and using new paper	0.2	60%
Shredding only confidential documents used in patient management instead of shredding all documents	3.1	49%
Reusing old envelopes used in patient correspondence instead of buying new envelopes	1.2	39%
Using paper-only envelopes in patient correspondence instead of using envelopes with plastic windows	0.7	19%
Printing and photocopying on double sides of paper used in patient management instead of printing and photocopying on single sides of two separate sheets of paper	3	30%
Using dual flush toilets instead of using regular single flush toilets	3.1	63%
Using water from a rainwater collection tank instead of using water from the mains supply	30	90%
Autoclaving, shredding and recycling used toothbrushes instead of incinerating toothbrush waste	45.7	96%
Reusing and sterilising a metal air-water syringe tip instead of using a disposable air-water syringe tip at each patient visit	38.1	66%
Using running tap water instead of using a dishwasher to wash dishes in the staff canteen	66.6	87%
Using running tap water instead using a filled plugged sink of water to wash dishes in the staff canteen	25.6	72%