Mr Cameron spoke to the Otago Daily Times yesterday, after Delta - a council-owned company - presented the council with an alternative proposal for the future management of the city's $1.6 billion water network.
The proposal - approved for investigation by councillors on Monday - would see the city's water assets transferred to a new council-controlled organisation (CCO).
Delta would become a service provider to the new CCO and 100 staff from the council's water and waste services unit would become Delta employees instead.
The company's bid was an alternative to the SouthernWater plan, under investigation since January, which would form a CCO to own the water assets and employ the 100 staff to provide services.
The written proposal from Mr Cameron urged the council to consider using his company, which would provide streamlined and cost-effective water asset management, operations and maintenance services in Dunedin.
The change would also allow the company to expand and pursue other opportunities in the water sector outside Dunedin, including operation and management contracts with other public and private network owners.
Mr Cameron told the ODT the move could boost the company's revenue by more than $50 million a year, which would "more than double" what the company already earned from the water sector each year.
Delta already provided water services to councils in Central Otago, Southland and Canterbury. The Dunedin deal could allow it to expand into other markets across New Zealand, he said.
"It's a significant opportunity for us and one that we're certainly extremely excited about."
The Delta proposal pointed to savings of between $2 million and $3 million a year, obtained through efficiencies such as rationalising back-office services.
That would allow an increase in dividend payments to the council of between $3 million and $5 million a year.
Mr Cameron said the estimates were considered "robust", but further work was planned to confirm the details.
He also hoped as many council staff as possible would be retained under Delta's umbrella, although some could be transferred to other parts of the growing company, if the deal went ahead.
"We don't want to lose good skills and knowledge in the business."
The asset-owning CCO would be formed under the DCHL umbrella, and not required to make a commercial return, while plant, equipment, land and buildings not directly supporting water assets, such as depot facilities, would be transferred to Delta.
The council - as the sole shareholder of DCHL - would retain ownership, in keeping with the Local Government Act.
Delta would need a long-term service agreement with the CCO to provide "investment certainty". A term of up to 35 years was allowed under the Act, the Delta proposal said.
A report by council city environment general manager Tony Avery said the arrangement would be "broadly similar" to Delta's contract to maintain the lines network owned by Aurora Energy Ltd, another council-owned entity.
A statement of expectations developed by the council for either the Delta or SouthernWater approach would detail service levels and other expectations, and the council would remain an "active owner and a strong regulator".
Councillors were yet to debate either proposal, despite several comments for and against them at Monday's finance, strategy and development committee meeting.
Cr Jinty MacTavish described both options as "crappy", while Cr Andrew Noone said the Delta proposal appeared to have merit but contained "raw" and "untested" financial projections.
Councillors authorised a detailed investigation of the Delta proposal, which would be reported back to councillors by the end of January.
Councillors would then decide whether to consult the public on one or both of the proposals, or revert to an "enhanced status quo", focusing on improving the council's in-house service.
