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Effective April 28, 2015 Chapter Four Subsurface Sewage Treatment System Regulations <br />WASHINGTON COUNTY DEVELOPMENT CODE <br />CHAPTER FOUR <br />SUBSURFACE SEWAGE TREATMENT SYSTEM REGULATIONS <br />This chapter shall regulate the location, design, installation, use and maintenance of subsurface sewage treatment <br />systems in all areas of Washington County other than cities and towns that have adopted ordinances that comply <br />with Minnesota Statute 115.55 and are as strict as this Chapter. This chapter is authorized under Minnesota Statute <br />Section 115.55 and 115.56 and Minnesota Statutes Chapter 145A. <br />SECTION 1. PURPOSE AND INTENT <br />Purpose and Intent. <br />This Chapter is adopted for the following purposes: <br />(1) To protect the public health, safety, and general welfare by the discharge of adequately treated <br />sewage to the groundwater via the proper location, design, installation, use, and maintenance of <br />individual subsurface sewage treatment systems (ISTS) and midsized subsurface sewage treatment <br />systems (MSTS). <br />(2) These environmental protection standards shall be adopted county wide and administered and <br />enforced by the Department or local units of government as directed by Minnesota Rules, Chapter <br />7082, and Minnesota Statute, Section 115.55. <br />(3) This chapter does not regulate systems that will not receive sewage as defined in this chapter. If <br />systems receive both sewage and nonsewage, the requirements of this chapter apply, in addition to <br />any additional requirements governing the nonsewage portion of the wastewater. <br />(4) To provide prescriptive design, construction, and operational standards to reasonably protect <br />surface water and groundwater and promote public health, safety, and general welfare. <br />(5) To protect individual water supply wells of the community from contamination by inadequate, <br />improperly designed, located, installed or maintained subsurface sewage treatment systems. <br />(6) To provide for the orderly development of areas of the community which are not served by central <br />public wastewater treatment systems and to reduce the need to install central public wastewater <br />treatment systems in areas where they are not now currently planned. <br />(7) Technology and products employed in system design shall adequately protect the public health and <br />the environment as determined by Minnesota Rules, Chapter 7083, and be approved for use by the <br />Department or local unit of government. <br />(8) This Chapter does not intend to impose design standards for sewage treatment systems that <br />discharge to the ground surface or surface waters. Those systems require a National Pollutant <br />Discharge Elimination System permit. <br />9 Washington County Development Code <br />