I have a copy of Bar Harbor Waters annual report filed with the PUC. It lists BHB has the largest shareholder with 459 shares. Now this doesn't say if they're held for the bank or for trust customers. It could be either since the water company is also one of BHB largest creditors. I'm looking for shares in the water company. I don't care if you want to sell 1 share or 100 shares.
I wish I could offer you some BAHR. I spent some time looking for shares a couple of years ago and gave up without being shown a single share.
If BHB does own the BAHR shares as part of BHB's trust operations, which I think is likely, and BHB has investment power with respect to such holdings, I believe that BHB would have a fiduciary obligation to accept a bid for shares which is in the best interest of the beneficiary of the trust. I have no idea what the "market" price is of BAHR, but you if you're anxious to own at least a small number of shares, you might consider making a written offer to BHB's trust department at a price of perhaps 10% or 15% above "market".
Thanks again for the reponse, and good luck in the hunt.