Michigan Groundwater Sanitary Discharge Permits

Groundwater discharges are regulated by Michigan Department of Environment, Great Lakes, and Energy (EGLE) and treat sewage by separating solids from liquids through settling, skimming or sieving, and then generally apply the liquid to the ground. The liquid waste then percolates through the ground (similar to a septic system), allowing time and filtration from the soils to further treat the effluent. Groundwater discharges are not expected to be a source of E. coli to surface water if they are functioning properly. More detailed information, such as discharge monitoring reports and compliance history can be found on the MiEnviro Site Explorer. Fields include permit number, permit category, type of facility, and facility name. To learn more, see the Statewide E. coli TMDL, Section 7.4.D (Nonpoint Sources, Groundwater Discharges) available on the EGLE E. Coli webpage. Field Name Description SiteName Name of permitted site PermitNumber Permit number for associated site PermitCategory Regulatory authorization associated with permit Type Type of permit includes Sanitary Sewage, Slaughterhouses, Commercial Animal Care, and Egg Washing Wastewater OtherPermitDetails Other information pertaining to the NPDES facility, site, and/or permit Learn more about Michigan's Statewide E. coli Total Maximum Daily Load. Additional questions can be directed to Chris Vandenberg at [e-mail].密歇根州环境、大湖与能源部（Michigan Department of Environment, Great Lakes, and Energy, EGLE）对地下水排放行为实施监管。该类设施通过沉淀、撇除或筛分工艺实现固液分离以处理污水，随后通常将处理后的液体排入地下。废液随后会在土层中渗透（类似化粪池系统），借助土壤的滞留与过滤作用进一步净化出水。若系统运行正常，地下水排放不会成为地表水大肠杆菌（E. coli）的污染来源。 更详细的信息（如排放监测报告与合规历史）可在MiEnviro Site Explorer平台查询。本数据集包含以下字段：许可证编号、许可证类别、设施类型与设施名称。如需了解更多详情，可参阅EGLE大肠杆菌专题网页上发布的《全州大肠杆菌总最大日负荷量（Total Maximum Daily Load, TMDL）》第7.4.D节（非点源污染、地下水排放）。 字段名称及说明如下：SiteName：获批站点名称；PermitNumber：对应站点的许可证编号；PermitCategory：许可证关联的监管授权类别；Type：许可证类型，涵盖生活污水、屠宰场、商业动物护理及洗蛋废水等类别；OtherPermitDetails：与国家污染物排放消除系统（National Pollutant Discharge Elimination System, NPDES）设施、站点及/或许可证相关的其他信息。 如需了解密歇根州全州大肠杆菌总最大日负荷量的更多内容，如有额外疑问，可联系Chris Vandenberg，电子邮箱：[e-mail]。