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Subdivision Review Program

The Department of Environmental Quality Subdivision Program reviews divisions of land comprising  less than 20 acres, as well as condominiums and recreational camping vehicle and mobile home parks, regardless of the size of the parcel where they are located.  This review under the sanitation in subdivisions regulations is limited to sanitation facilities, including the water supply, sewage disposal, solid waste disposal, and storm drainage systems.  Proper design and location of these facilities is necessary to protect the quality of water for public water supplies, domestic uses, and other beneficial uses, including uses related to agricultural, industry, recreation, and wildlife.

Subdivisions are reviewed prior to creating the parcels to assure that adequate sanitation facilities can be constructed, operated, and maintained to support each parcel. Planning ahead for proper design and location of the facilities helps protect both our surface and ground water in Montana.  Design manuals have been developed to provide standards for wastewater treatment systems, water supply development, and storm drainage systems. The regulations also set out minimum separation distances between water supply sources and potential contamination sources such as wastewater treatment systems, surface waters, and floodplains.
The regulations and subdivision review are structured to prevent pollution problems through the proper design, location, operation, and maintenance of sanitation facilities.

Subdivisions is proposing a change to their rules and the State minimum standards. The department is interested in receiving comments on the following proposed changes.

   Public hearing on MAR notice 17-358 is May 19, 2014 at 9:00 a.m. in Room 111, Metcalf Building, 1520 East Sixth Avenue, Helena, Montana.

 Public hearing on MAR notice 17-359 is May 19, 2014 at 1:30 p.m. in Room 111, Metcalf Building, 1520 East Sixth Avenue, Helena, Montana.

Written comments on the proposed rules must be submitted to Elois Johnson, Paralegal, Department of Environmental Quality, 1520 East Sixth Avenue, P.O. Box 200901, Helena, Montana 59620-0901; fax to (406)444-4386; or e-mail to ejohnson@mt.gov, no later than 5:00 p.m., May 22, 2014.

Types of Activities Regulated, Application Requirements, Permitting Procedures, Criteria, Fees, Additional Information

Septic Drainfield Soil Suitability Presentations

Pharmaceuticals, Personal Care Products, Endocrine Disruptors (PPCPs)and Microbial Indicators of Fecal Contamination in Ground Water in the Helena Valley, MT, USA --Presentation

Helena Valley Ground Water: Pharmaceuticals, Personal Care Products, Endocrine Disruptors PPCPs)and Microbial Indicators of Fecal Contamination--Manuscript

 

Subdivision Review Program

Subdivision Online Application
"Subdivision Web Application
 Tool" (SWAT) released for
public use. Please use this link.
Staff Contacts
Application Forms, Checklists and Guidelines
Environmental Assessments
MT Rules and Statutes
Effective 12/31/09
Amendment of ARM
17.36.340
Minimum lot size rule
Official Replacement Pages
Nondegradation Determinations
Gray Water Facts 
Circulars
DEQ Circular 4 - MT Standards for On-Site Subsurface Sewage Treatment Systems,
2013 Edition