Septic Tiers (File Geodatabase)

Local jurisdictions in Maryland are required to establish and adopt growth tiers to control the number of new subdivisions on septic fields. The purpose of this requirement is to protect agriculture, control growth in rural areas, promote growth in areas that have infrastructure in place for it, and reduce nitrogen from septic systems, a primary pollutant of the Chesapeake Bay. This layer shows the location of the four Tiers in the County: Tier 1: Areas currently served by sewer Tier 2: Future Growth Areas planned for sewer Tier 3: Large Lot Development and "Rural Villages" on septic systems Tier 4: Preservation and Conservation Areas. No Major subdivisions on septics except by exemption Montgomery County has been approved by the Maryland Department of Planning to allow major subdivisions on septic systems. For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620马里兰州各地方行政辖区须制定并推行增长层级制度，以管控化粪池排污地块（septic fields）上的新建住宅分区开发项目数量。此项规定旨在保护农业、管控农村地区开发增长、推动具备配套基础设施区域的合理开发，并减少化粪池排污系统（septic system）排放的氮污染物——此类污染物为切萨皮克湾的主要污染源之一。 本图层展示该县四类增长层级的空间分布： 层级1：当前已接入市政污水管网的区域 层级2：规划接入市政污水管网的未来增长区域 层级3：采用化粪池系统的大型地块开发及"Rural Villages"区域 层级4：保护与保育区域 注：除豁免情形外，化粪池排污地块上不得开展大型住宅分区开发项目。 马里兰州规划厅已批准蒙哥马利县可在化粪池排污地块上实施大型住宅分区开发项目。 如需获取更多信息，请联系： 地理信息系统（Geographic Information System，GIS）管理员 信息技术与创新（Information Technology & Innovation，ITI）部门 蒙哥马利县规划局（MNCPPC） 联系电话：301-650-5620