The fly infestation that has plagued south Llanelli for weeks has been traced to the AMG Resources site — with Natural Resources Wales ordering the operator to bring the problem under control within 21 days.
Natural Resources Wales investigations into the surge in fly activity in the Glan-y-mor ward identified the AMG Resources Ltd site as a source.
The site is permitted and regulated by Natural Resources Wales.
NRW issued an enforcement notice requiring the operator to address issues relating to the management of waste on site, and to bring operations back into compliance with its permit conditions.
The operator has been given 21 days to implement the required measures, with the regulator pressing for the work to happen sooner.
The confirmation ends weeks of uncertainty for residents, after swarms of flies hit homes, pubs and shops across Seaside, Morfa and Tyisha — with shops selling out of fly spray and more than 800 people joining a Facebook group tracking the infestation.
It follows a process of elimination: earlier this month the council ruled out the Trostre recycling centre and Dŵr Cymru’s Northumberland Pumping Station, with the AMG Resources facility among the sites still being examined.
Carmarthenshire Council’s cabinet member with responsibility for public health, Cllr Aled Vaughan Owen, said the county council was continuing to work with NRW and partners following the confirmation and the enforcement notice.
“The county council’s public health team has invested significant resources to help tackle the issue,” he said, “including inspections of potential source locations, monitoring activity, engagement with local communities, providing direct support where necessary, and implementing mitigation measures, including the deployment of strategically located fly traps in the affected area.”
Cllr Vaughan Owen added: “We will continue to review the situation carefully and work with partner organisations to take any appropriate action to protect residents and minimise nuisance.”
Residents experiencing problems with fly activity are being encouraged to report them to the council’s contact centre on 01267 234567 or by email to publicprotection@carmarthenshire.gov.uk — reports help officers monitor the situation and target investigations.
The council said it had asked NRW for written confirmation of the longer-term measures it expects the operator to put in place to prevent a recurrence.
That includes changes to the site’s pest management plan, seasonal requirements, and “operational triggers” — rules that would kick in during warmer months, when the risk of fly activity rises.
Llanelli Town Council leader Sean Rees — who also represents the Glan-y-mor ward on Carmarthenshire Council — said there were “serious questions for NRW to now answer”, and has since joined a call for the NRW chair to resign.
The advice for households battling the nuisance also stands: fly screens or closed windows, food waste stored securely, and traps or papers indoors.
Update — 22 July 2026: this article was amended to make clear that confirmation of the source came from Natural Resources Wales, and to include an updated statement from Carmarthenshire County Council.
Related stories from Swansea Bay News
‘Like a plague’ — flies swarm Seaside homes and pubs as shops sell out of spray
How the infestation first took hold.
Two sites cleared in Seaside fly investigation — but source still not found
The process of elimination that led here.
Councillors call for NRW chair to quit over fly crisis
The latest chapter: Glanymor’s councillors demand accountability.
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Twice in four years this has happened. Once well, is a one off. Twice is the developing of a pattern.