A report into the state of Lincoln's ambulance station has criticised a lack of security for drugs, including morphine, on board fire vehicles.
Fred Barnett, chairman of the ambulance trust, made the comments after a recent visit to the South Park Station.
He noted morphine on vehicles cannot be locked away and a shortage means that drugs have to be moved between ambulances to make up a shortfall.
The trust says it is considering relocating the station.
Mr Barnett also said the Lincoln facility was "untidy, dirty and in a state of neglect".
He said a recent fire inspection condemned the general housekeeping at the station.
The building in South Park Avenue was constructed in the 1960s to house 24 staff, but now has more than 80.
Mr Barnett said while staff were dedicated, they were frustrated by the lack of equipment.
The trust said in a statement some of the issues have been addressed but they are still considering moving to a new site.
A spokesman for union Unison said this was part of a wider problem with stations in Grantham and Sleaford also suffering from a lack of investment going back many years.