Nitrogen removal is no longer required for every septic system installed in the state of Maryland. The Best Available Technology (BAT) regulation has been unpopular in rural areas of the state that saw it as a barrier to development because of the approximate $10,000 added cost for building a home.Republican Gov. Larry Hogan announced the rollback of the regulations by the state Department of Environment in August during a speech to the state’s Association of Counties, calling it a “cost-prohibitive burden on Maryland homeowners and businesses.”The change became effective in late November after a rulemaking process by the Department of
