County staff flag nitrate‑reducing septic systems as unreliable; code amendment process begun
Planning & Zoning staff said DEQ training showed nitrate‑reducing systems do not address groundwater as understood; staff noted high failure rates (average life ~10 years) and advised the commissioners they will move to amend county code and consider community systems for lots under 5 acres.
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JoAnna Ashley, Planning & Zoning, told commissioners that a DEQ training revealed a problem with the county's code permitting building on 2.5-acre parcels when a nitrate-reducing septic system is installed. She said DEQ training showed such systems do not address groundwater as the county had previously thought; health‑department inspections verify septic systems only and not groundwater conditions.
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