ARSD 74:53:01:04. Existing systems not affected by this chapter -- Exceptions

On-site wastewater systems existing prior to February 28, 1975, are not subject to this chapter unless the systems are changed, the systems cause the groundwater to become polluted, or the systems are allowing wastewater to surface. Abandoned wastewater systems are not exempt from this chapter and shall be abandoned in accordance with § 74:53:01:11.