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Stakeholders urge DNR to retain septic-system hierarchy as proposed Chapter 69 sparks debate over aerobic units
Summary
The Iowa Department of Natural Resources proposed a rewritten Chapter 69 on private sewage disposal; manufacturers, installers and on-site wastewater professionals urged the agency to retain a preference for packed-bed media (biofilters) over aerobic treatment units (ATUs), citing maintenance and performance concerns and submitting studies.
The Iowa Department of Natural Resources proposed rescinding and replacing Chapter 69 (sewage disposal systems), prompting multiple public comments arguing the proposed changes would remove an existing hierarchy that favors packed-bed media filters over aerobic treatment units (ATUs).
Laurie McDaniel, water quality bureau chief at DNR, told the committee that proposed Chapter 69 "establishes requirements for the time of transfer program" and sets rules to ensure on-site sewage systems are properly constructed and operated.
Several manufacturers and installers spoke against aspects of the draft rules. RG…
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