Well it’s good to know you are a cop (BS of CJ), as it means you aren’t an engineer. Given that I have designed jails, courthouses, and police stations I can say that your BS means basically nothing in this as you are mostly trained in criminal law rather than building code.
Holding time, local building code, and CA budget are the biggest constraints for the buildings in question. 4-8hrs holding period does not require and often doesn’t get a plumbing connection.