SAN FRANCISCO — San Francisco-area Jewish organizations condemned a proposed ballot measure to outlaw Jewish ritual circumcision in the city.

The Anti-Defamation League, the local Jewish Community Relations Council, the Board of Rabbis of Northern California and the American Jewish Committee together issued a statement expressing “great concern” about the proposed measure, which would make the practice of brit milah, or ritual circumcision, on anyone under age 18 a misdemeanor carrying a $1,000 fine.

“For thousands of years, Jews around the world have engaged in this important religious ritual, which is of fundamental importance in the Jewish tradition,” the statement said. “The organized Jewish community is deeply troubled by this initiative, which would interfere with the rights of parents to make religious decisions for their own families.”

San Francisco resident Lloyd Schofield is spearheading the effort to collect enough signatures to get the anti-bris measure on the ballot next year. At least 7,100 signatures are needed to qualify. Schofield wants to ban the practice of male circumcision, including for Jewish religious purposes; female circumcision is already illegal. Likewise, Schofield argues, male circumcision on boys under the age of consent should be illegal, too.

“People can practice whatever religion they want, but your religious practice ends with someone else’s body,” Schofield said in a recent interview with CBS. “His body doesn’t belong to his culture, his government, his religion or even his parents. It’s his decision.”

While the proposed measure has drawn international media attention, the Jewish agencies who condemned the effort said they believed any such measure would be defeated at the ballot box.

“San Francisco has a tradition of embracing the diversity and respecting the religious customs of its citizens,” the joint statement said. “We trust that the voters of San Francisco will see this proposed initiative as an affront to that tradition and to their freedom.”