However, Ms Pearce said the council had received £14.4m from the Welsh government since 2020 to carry out “significant work” on one large coal tip within its ownership.
She added about £12m will have been spent on making one coal tip safe and there were 617 tips across the Neath Port Talbot area.
A shortage of the appropriate skills to manage coal tip safety, external and remediation was also highlighted as a concern.
Mark Williams of Caerphilly council said: “My authority has received just shy of £3m for the year 2025-26 – and it only scratches the surface.
“The money will be spent on a range of maintenance tasks. We have 205 tips in Caerphilly borough – 89 of which are in local authority ownership.”
He said the cost of inspecting these tips is about £15,000 a year and that more money from UK government was needed.
“Money that’s being passported is really helpful but it’s really only useful for monitoring and routine maintenance, it won’t really address any remediation costs.”
He also reiterated concerns around a shortage of engineers with the necessary skills for the work needed to make coal tips safe, although said he believed the Welsh government had recognised this and was trying to address these challenges.
