I tried to run a free-standing detail shop for years without city sewer tie-ins. What a disaster! The reclaim system was undependable, hard to clean, and super-smelly! Water can go septic very fast! Customers complained constantly about the smell.\
You will have similar problems, even with a top-notch reclaim system. The cost and maintenance and cost to operate a reclaim will cut into profits too deeply. A well would require underground cisterns to contain enough water to meet the demand of a busy tunnel.
Yes, it may be possible. But not everything is possible should be done. The most important resource for your wash is the water. The sewer is inextricably linked. I know; I was shut down for a month in 2019 with a sewer problem. Could your project sustain such a financial hit ( ZERO REVENUE ) and survive???
I think you need to do more homework on your own. The fact that you are asking about what kind of problems there are with reclaim systems indicates to me that you have done enough due diligence. As a new operator, you want things to go smoothly with your water and sewer supply for a good ten years before any 'issues' crop up ( and they can). With a well and reclaim, there will be issues from the start of the project until the day you leave it. Harsh but true. In all of the systems that must be present in a car wash business, water and sewer is one of the ones that you want to be: " set it and forget it" as much as is possible. City water and sewer is the best way to go; then this part of the business is on autopilot, with a few occasional bumps along the way. The car wash business is hard enough without starting off seriously handicapped, which is how I see it. Others may disagree, but have they been there / done that?
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