Most mobile power-washing businesses use prefer to use residential customer's water source via a long hose. Hauling water can quickly become a burden from a weight and capacity perspective -- ~7.5 lbs. per gallon of water -- charging extra or not giving a discount would make sense from a business perspective.
However newer Eco-friendly power washers that use less water could become a major selling point that would allow you to charge more money. Such a rig might be fully self contained wash equipment, collection aprons, and have both clean water and recycled (dirty) water tanks.
There is a high amount of risk in starting your own small business. The majority of businesses started fail within the first year. When starting a business you are risking either your capital or someone capital which could hurt you financially.
The washing away of soil is called erosion.
Capital is the amount which invested by the owners of business in business and refundable by business at the time of liquidation.
Adding sugar to dish washing liquid will increase the amount of lather and bubbles.
The amount of time the washing cycle lasts. Rinse and spin cycles aren't included in that time.
The European brand dishwasher Bosch uses the least amount of energy washing.
Business income is the amount of money received through your business.
The electric washing machine
There is no set amount of money that a business assistant makes. The amount is based on the company's pay.
The amount of money invest in business is called capital.
Liability
A large amount of options are available from start up loans to simply starting an account. Barclays heavily supports small businesses, and would be very helpful for anyone looking into a business loan.