There will be a 14-day grace period from the day of a registration breach before a fine will be issued.
Peters said jetski use in the Bay of Plenty had seen a massive growth with now just over 2000 registered across the region.
"They are affordable and relatively simple to use so they're attractive to a wider variety of people.
"However, a lot of people don't realise that they have the same rules as boats."
Jetskis must keep to 5 knots within 200 metres of the shore, a structure, or dive flag.
The 5-knot rule also applies within 50 metres of another boat, raft, or person in the water.
The owner of the jetski is responsible for making sure that any person in charge of their jetski is competent and aware of the local regulations.
Peters is urging jetski owners to make sure the registration is changed when jetskis are sold.
"If you haven't changed the registration the previous owner will be liable for any fine handed out."
To register a jetski go to the Bay of Plenty Regional Council website.