Standard&Poor's Ratings Services has raised its rating on East Haddam, Conn.'s general obligation (GO) debt to 'AA+' from 'AA'. At the same time, Standard&Poor's assigned its 'AA+' rating to the town's series 2010 GO bonds. The outlook is stable. In addition, Standard&Poor's assigned its 'SP-1+' rating to the town's GO bond anticipation notes. The upgrade reflects our opinion of the town's strong reserve levels, very strong income levels, and extremely strong per capital market value. The rating also reflects our view of the town's: Residential tax base, with little taxpayer concentration; and Low debt burden and limited additional capital needs. The bonds and notes are general obligations of the town, for which it pledges