The toilet's system was designed to cater for 150 people a day and a maximum of 1200 litres a day.
"We have thousands of people out here over summer," Wooding said.
He estimates the toilet block is pushing through 2500 to 3000 litres a day in summer and believes the system can't cope.
"The system doesn't get a rest. It's far too small for all the people here."
Wooding wants to see the toilet block shut down until something is done about.
But Whangārei District Council chief executive Rob Forlong said he had looked into the matter and was "pleased to advise that the Matapouri toilets are lawful".
In regard to the building consent which stated a resource consent was required before work can commence on replacing the toilets, Forlong said on December 18, 1997 planners and surveyors Reyburn and Bryant wrote to the council's then regulatory manager and explained that the toilets were authorised under the RMA and the Reserves Act.
"Later in 1998 the toilets were raised by 600mm. Council again sought confirmation that no consent was required and this was confirmed by planning consultants at the time," Forlong said.
"We have since checked and have confirmed that no resource consent was required."
Forlong also addressed Wooding's concerns about his bore water.
"I understand that concerns arose from a positive bacterial test from a bore and that which tests since have shown no bacterial contamination."
He noted that the toilets may get "considerably more" use now than in the past.
"Consequently, we have asked an engineer to review the toilets to determine whether upgrades are necessary."
Wooding said he had further concerns about the way the council conducted its test and he would not be using his bore water this summer because it still stank.