That is the difference between commercial construction and residential construction. In commercial construction much time is spent in specifying the standards the builder will be held to and in the contracting. Residential construction takes advantage of the lack of experience of the buyer and establishes a trust me, I am the expert, relationship. And there is no agreement between your expectations and what the builder will deliver. So you are stuck with it.
In your business you are dealing with commercial customers with established industry standards and maybe government regulation and oversight. There is no such thing in residential pool construction beyond the APSP standards that are voluntary. If you had been aware of the APSP standards a reasonable question to the builder would be if your pool will be built to the APSP standards and to state that in the contract.
Folks who come here before their build we try and advise on the realities of the residential pool construction in places like
Construction Best Practices - Further Reading
How much do you still owe the builder?
The pool come with any pool cleaner? Figure out what freebie you can ask the builder to give you. He may be more willing to give you some free equipment rather then cash.