The Douglas councillor says a change in culture has prompted his resignation.
His resignation as chair also means he will no longer sit on the executive committee.
Mr Pitts has served the board for more than 10 years, so what has changed?
Councillor Andrew Bentley succeeds Mr Pitts as chair.
Peel sewage works hits milestone
A major milestone has been reached in Peel as a new sewage system gets up and running.
MHK to query gas buying for power generation
How much gas has the Island bought for winter power?
Yoga studio applies for sign permission
A yoga studio in Douglas has applied for retrospective planning permission for signs outside the building.
Yacht club worries over lifeboat retirement
A yacht club based in the south of the Island says it has reservations about Port St Mary losing one of its lifeboats.
One nuisance cyclist ticketed in more than three years
Douglas Council says it's had 13 complaints about cyclists in almost four years.
New ministerial post created by chief minister
The Isle of Man has a new ministerial job - and a minister to go with it.
Huge floating book fair to arrive in Douglas next month
The world's largest floating bookshop will be in Douglas for almost a fortnight next month.
Stay safe for Hop Tu Naa tonight
Police are asking trick or treaters to make sure they can be seen tonight.
