This is a snapshot of swimming pools and portable spas in the Hawkesbury area. Everyone wants their own private spa/swimming pool! Generally people have to register their pools for inspection with the Council or an accredited private certifier to be comply with the NSW Swimming Pool Register. The law was created to try to stop children drowning in backyard swimming pools, but the actual problem is lack of parent supervision. No law will fix that.
In GIS it is just one big spatial data layer with lots of point feature classes. A pain to maintain and update but after 4 weeks of checking items against the data we received from a supplier I think our layer is now up to date.