Corporate county authorities may require by ordinance that any map or plat of land not within a municipality be submitted and approved by appropriate authorities. County authorities may establish “reasonable rules and regulations” to protect of community and natural resources, as well as surface waterways and drainage basins, associated with water supply. Furthermore, county authorities may include reasonable requirements applicable to water supply, sewage collection, and floodplain and stormwater management. Pursuant to 55 ILL. COMP. STAT. 5/5-1042 (2004), counties with a population of 500,000 or less, located in the area served by the Northeastern Illinois Metropolitan Planning Commission, are afforded similar authority, with the exception of floodplain and stormwater management. See 55 ILL. COMP. STAT. 5/5-1041 (2004).