Under what circumstances can raw land be advertised as “buildable” or “developable”?

It is illegal to advertise raw land as “buildable” or “developable” unless the property is “readily accessible” to a sewer system (sewer line within 200 feet of the property line)  unless the seller obtains from the RI Department of Environmental Management a “valid certification of the property’s suitability for development as part of a subdivision …