This should be your absolute last resort. Have you explored every other option? Does your county councillor attend your meetings? Do you have a strong working relationship with officers at all levels? Have you raised your concerns with every rung of the ladder? Have they explained their reasons?
The role of the media is to sell a story. They'll take your facts and mould them into the best story they can, regardless of whether it continues to resemble the story you submitted. For every person who supports your decision to go public, somebody else will question whether or not this is the correct course of action.
Do you have county council elections this year? Have you thought of arranging your annual assembly during the first three weeks of March, before purdah, as a public Q&A for the candidates?