Moody's Investors Service has announced that it has upgraded Harrison to a rating of Aaa , the highest attainable rating offered and a first for the town/village. The rating report indicates that Harrison has a healthy financial position supported by conservative budgetary management, a sizeable and affluent tax base with ongoing commercial and residential development, a continued growth in reserve with strong budgetary flexibility, very strong liquidity levels, strong budgetary performance and a manageable debt burden with an average pension liability.