"If this went to court, the city could certainly win on the issue of needle exchange," he added.
Needle exchanges were first developed in Europe six years ago.
The same argument was used against needle exchanges, but research never found support for it.
But, he said, the effects of needle exchange on the community should be monitored for three to six months.
The first needle exchange opened in 1989 and there were about eleven others by the end of the 1990s.
He may be right, although the case for needle exchanges is problematic.
Focusing on needle exchange, they argue, takes attention away from treatment.
But who would want to start a business with a needle exchange nearby?
"Our first project will be on clean- needle exchanges," she said.
Make good use of your local needle exchange or chemist and stock up on new works.