Danbury firefighters have been out in recent weeks opening and closing hydrants around the city. The resting program was started in 2001 in an effort to reduce the number of damaged and malfunctioning hydrants. There are more than 2,100 hydrants in Danbury. After the test is complete, the findings are input in an electronics records system. The City's water department can see the data base and determine if any repairs are needed. About 850 hydrants have been replaced since the testing program started, with about 200 hydrant repairs made annually.