The licence side is the same across NSW: a licence for plumbing, draining or gasfitting work of any value, a contractor licence to contract for it, and Fair Trading's advertising guidance asking for the licensee's name, licence number, category of work and a business phone, websites included. Our Sydney plumbers page covers those rules. What changes here is that the City of Coffs Harbour is water authority, sewer owner and plumbing regulator in one, under a delegation from Building Commission NSW, the state's plumbing regulator.
Council's steps run in order. The plumber or drainer gives council at least two days' notice before creating or changing a sewer connection or an on-site sewage system, using the Notice of Work form, after the sanitary plumbing and drainage application has gone in online. Inspections happen before anything is covered or backfilled: external drainage and the sewer connection, all drainage inside and out including trade waste, sealing of disused services, any work that failed an earlier inspection, and a final inspection before anyone moves in. Within two days of finishing, the owner and council each get a Certificate of Compliance, plus a Sewer Service Diagram where sewer work was done. Council points out that these records matter when the property is sold or renovated, and when a failure is investigated later.
The stormwater program is the job most likely to bring owners to a plumber's website. Council's view is that the sewer is built for wastewater, not rain, and that stormwater getting in can overload pump stations and treatment plants and cause overflows. Its inspectors push harmless smoke through the sewer to see where it escapes from gutters or drains, or put dye in gutters and watch for it in the sewer. They look only at external plumbing and don't go inside, residents get a letter beforehand and a reminder the day before, and police and fire services are told so nobody calls in a fire. The testing covers homes, shops and industrial sites in every suburb and will take several years, and council says it usually contacts owners first rather than going straight to fines.
Backflow follows council's Backflow Prevention and Cross Connection Control Policy (Containment Only), which works to AS 2845 and AS/NZS 3500. Trade waste approvals are generally granted for five years before the business reapplies, and the list of what counts goes past restaurants and workshops to pools, schools, hospitals and nursing homes, septic tank waste, boat pump-out facilities and chemical toilets. On-site sewage is managed under council's On-Site Sewage Management Strategy, first written in 2000, reviewed in 2006 and updated in 2015, and operating a system without approval is an offence.
Council's area runs from Corindi Beach, Red Rock and Woolgoolga through Emerald Beach, Moonee Beach and Korora to Toormina, Sawtell, Boambee and Bonville, and inland to Coramba, Nana Glen, Lowanna and Ulong. Cross into Bellingen Shire at Urunga, the Nambucca Valley or the Clarence Valley and each of those councils sets its own inspection requirements, so a site that lists those towns should say you deal with their paperwork too. We're an Adelaide team on Hutt St and work with coastal NSW businesses by phone and email; Tomi's Bobcat and Excavation in the Bega Valley is one of them.