Heritage lights that adorn Greytown's Main St are likely to be systematically overhauled to stop water from infiltrating the fittings.
This is revealed in a street lighting report prepared by South Wairarapa District Council officers that is to be presented to a full council meeting in Martinborough today.
The work is likely to cost more than $20,000, but the report does not indicate whether the council or the manufacturer of the lights, who will do the modifications, will pick up the financial cost.
Windsor Heritage lights were installed in a portion of Main St several years ago when the town centre was refurbished and later extended further along the street.
There are now 21 heritage lights in the town and all have been inspected by the manufacturer who has asked for them to be returned to the factory for modification.