I purchased a home in 2008. The home came with a sprinkler system, and the House passed the Certificate of Ownership without issues. I am now selling my home, and the township says there were never permits for sprinkler installation, so piping is illegal. If I want to sell, I have to pay for permits, a plumber, and a sprinkler installer to change all the PVC piping. Why did this pass through the township, and who is responsible?