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• •of surface water, or into any rock or soil formation the structure of which is not conducive to purification of water'by .filtration, or into any well or other excavation.in' the ground.• IAll new or existing systems which discharge to surface waters or the ground surface must obtain either a NationalPollutant Discharge Elimination System (NPDES) or'State Disposal _ _ <br />System Permit from the agency and shall comply with all . - - - - - <br />requirements pertaining thereto. <br />MS s 115.03 subd 1 <br />7080.0060 TREATMENT REQUIRED. <br />The system, or systems, shall be designed to receive all <br />sewage from the dwelling, building, or other establishment <br />served. Footing or roof drainage shall not.enter any part of ‘ <br />the system. Products containing hazardous materials must 'not be <br />discharged to the system other than a normal amount of household <br />products and cleaners designed for household use. Substances <br />,not used for household cleaning, including solvents, pesticides, <br />flammables, photo finishing chemicals, or dry cleaning <br />chemicals, must not be discharged to the system. <br />! * Systems that were installed according to a^ applicable <br />local standards adopted and in effect at the time of ‘ <br />installation shall be considered as conforming unless they .are ’’ <br />determined to be failing, except that systems using cesspools?’ <br />leaching pits, or seepage pits, or systems with less .than three <br />feet of unsaturated soil or sand between the disETTbuETon device <br />I <br />I <br />I <br />and the limiting soil Characteristics shall be" considered <br />nonconforming • r • • <br />MS s 115.03 subd 1 <br />13 SR 2752 <br />*• -'1. <br />7080.0070 SYSTEM COMPONENTS <br />I. <br />The system shall consist of a building'sewer, sewage'tahl<,' <br />' i •• *• <br />’ ..r|.,• •. ; <br />. I