Household rubbish has again been dumped at one of Levin's popular swimming areas, the Ohau River, which is also the source of the town's drinking water supply.
Horowhenua District Council's environmental engineer Ryan Hughes said on average council receives about nine reports of fly tipping per month, and is able to issue infringements for seven - about a 78 per cent success rate.
"We take a zero-tolerance approach to fly tipping and act on any reports with haste.
"Where the offenders are identified, either through vehicle licence plates or information found in the rubbish, a $400 fine will usually be issued within the week, if not the same day."