Platte County, Missouri
Village of Ridgely is a village in Platte County, Missouri. Septic permits inside Village of Ridgely come from the county and state together. 4 rules below are quoted from official sources and independently re-checked, most recently on November 5, 2026. Rules for unincorporated land are on the Platte County page.
Village of Ridgely does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Onsite wastewater systems inside Ridgely village limits, subject to the applicable state or local permitting jurisdiction.
maximum daily flow: <= 3000 gpd (For listed cluster or centralized systems with subsurface soil dispersal.)
“Different state and local agencies have responsibility for regulating various wastewater treatment systems”
Installation or repair of most onsite wastewater treatment systems inside Ridgely village limits.
“A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS).”
Water-well construction inside Ridgely village limits.
“Well drillers and pump installers who charge for their services must have a permit to construct a well.”
A proposed subdivision inside Ridgely village limits that proposes seven or more lots, each under five acres, served by individual onsite wastewater treatment systems.
number of proposed lots: >= 7 lots (Each lot must be less than five acres and use individual onsite wastewater treatment systems.) · lot area: < 5 acres (Applies to each proposed lot.)
“new subdivisions need to receive written approval from MoDNR for the method of wastewater treatment when a developer proposes seven or more lots”
We looked and could not find an official answer yet. Silence is not permission; ask Village of Ridgely or Platte County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Village of Ridgely publishes no rule on the point, not that none exists. Platte County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Village of Ridgely means bringing your own water and power. The kit we’d start with:
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