I am probably the only one that would do this. What is your water cost in your town? Do you tell your customers what it costs to water per hour? Mine is $2.63 per unit (100 cubic feet) which is 748 gallons. I tested an oscillating sprinkler by placing it into a 5 gal bucket and used a watch. I found the time in seconds to fill the bucket. Output was a bit over 5 gallons per minute. That is 300 gallons per hour. 300 over 748 would be .401 of a unit per hour. .401 times the rate of $2.63 equals $1.05 per hour to water my lawn with an oscillating sprinkler. This was a test--I actually have underground sprinkling. And my water bill includes a sewage charge based on our winter use, and some ready to serve fees, together it seems steep. And I discovered that I can look up my bill online using only my address. And I can look up the water bill of any address in my town, if I know the address. So potentially, if someone tells me that water their grass a lot...I can quickly learn how much water their household actually used that quarter. This could be useful for those situations where the new-seed customer exaggerates how much they watered and complains that the seed "didn't take".