The DNR has developed design guidance manuals for five technologies in an effort to broaden the number of treatment options considered for managing wastewater within Iowa's communities (with populations ranging from 25 to 250) and provide uniform design guidelines for everyone involved to follow.
The five alternative technologies evaluated are: Recirculating Media Filters, Sand Mounds, Drip Dispersal, Constructed Wetlands, and Alternative Collection Systems. Understanding the design guidance is important for consulting engineers and planners involved in the planning, funding, and design, and construction of wastewater treatment improvement projects since they are not addressed in current rules.
The guidance will enable professionals to evaluate these alternatives and work through the state approval process with confidence.
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| Recirculating Media Filter Manual |
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| Sand Mound Manual |
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| Drip Dispersal Manual |
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| Constructed Welands Manual |
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| Alternative Collection System Manual |
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| Apendix A - Primary Treatment Units |
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| Appendix B - Pressure Distribution Design |
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