ron p
Schaeffer is correct in HOW.
Why, would you need to know, is the problem.
Are you going to turn work down because you dont have the right equipment? As in a tank. If you are,and do mostly homeowner work, your not going too last long in the biz.
Not having the right water supply is the #1 reason for pump failure and it's premature life span.
Even if you did the ol' water test and thought you were good to go, but just by a little bit, the happy homeowner figures" i'll get some laundry done while im home" or the automatic sprinklers kick on, or shes filling the pool, or off the main in the street-someone is hogging all the water that day.
You need some kind of tank to do homeowner work if you have a professioal power wash unit. 5 gpm or more.
There is no AVERAGE. It depends on the town,the size of the MAIN,and how far the house is from the main. Not to mention the size of the line coming into the house and if its rusty.
In my opinion JUST BLEACH AND DAWN is not sufficent to clean a house. Also it will not get the gutters clean. If your not getting the gutters clean, then you should not wash houses.
It's like truck washing but not cleaning the rims.
There are ton's of ideas and products to clean gutters and houses, as there are WAY'S and TOOL'S to get the job done. Use the SEARCH on this site. Then ask any question's you might have. Most everything about house washing has been covered on this site. Use this to gain some insite and learn,learn,learn.