Seniors have an opportunity again this year to lower their annual property taxes or water bills by doing volunteer work for the city through Revere’s Senior Citizen Work-Off Abatement . Under the program, seniors perform work for various city departments in return for an abatement on their taxes or a reduction on their water bills. This year, up to 100 seniors will each work 62.5 hours at an hourly rate of $8 per hour. Half of the seniors will receive a $500 tax abatement, and the other half a $500 water bill reduction. Participants must be at least 60 years old, have a primary residence in Revere in which they have an ownership interest, and earn no more than $45,000 for an individual or $55,000 for a married couple. Applications are available in the mayor’s office and must be returned by July 6. For more information, call the mayor’s office at 781-286-8111.