Do you use lawn fertiliser? Most fertilisers need to be watered in right away. However there is a new generation of lawn fertilisers which don't require this. They sit on the lawn until it rains, then it starts taking effect. Look for these and save on your water bill.
When watering a lawn, give it a thorough watering once a week, instead of little waterings daily. The big watering will allow the water to get down to the root system of the lawn.
Avoid mowing lawns on very hot days. Shorter lawn can burn far more quickly than longer lawns.
Lawns are the prima donnas of your garden. They need mowing, watering, fertilising and weeding. Plus did you know per square metre your garden lawn requires the most water. How about getting rid of some of your lawn areas and replace it with something a bit kinder on your bank balance.