Pushed for by John Simon, this act meant that sanitary powers that had been granted to individual local boards in the 1848 act were made available to all local boards. It also made local authorities responsible for the removal of nuisances (if they failed to act, the central government could take over and charge them), while extended nuisances to also include domestic properties, and overcrowding. Local authorities could even improve or demolish dwellings. For the first time, the central government was compelling local authorities, not just advising them.