An IPDES permit authorizes a facility or permittee to discharge pollutants into waters of the United States in Idaho, except on tribal land, under specified conditions. DEQ will issue IPDES permits only for discharges to waters of the United States. DEQ will require those classes or sectors of discharges required by EPA to have an NPDES permit to obtain an IPDES permit, but will not expand required coverage beyond federal regulatory requirements.
DEQ IPDES personnel will provide clarification and answer any questions users may have related to permit application, compliance, monitoring, reporting, inspection, and the permittee’s web interface.
Each calendar year, DEQ updates the Permit Issuance Plan (PIP). The PIP is DEQ’s plan for drafting and issuing permits and covers a 2-year time frame.
DEQ developed an online system for accepting information from permittees and applicants. This web-based system allows users to register accounts, associate the accounts with facilities, submit information, and track progress on draft permits. The IPDES E-Permitting system will be the main route for permittees to provide application and supplemental information to DEQ permit writers and documents required by the permits for compliance. DEQ will continue to require permittees to use NetDMR in compliance with EPA’s electronic reporting rule.
Publicly owned treatment works (POTW) provide services for municipalities across Idaho. These services include treatment of domestic sewage, storm water drainage, and sewage sludge disposal. All of these activities require an IPDES permit. Additionally, some municipal drinking water treatment plants discharge filter backwash to surface waters; this activity also requires an IPDES permit. When a municipal system accepts waste from a categorical industrial user or a significant industrial user that municipality may also be required to develop a pretreatment program.
Each year DEQ will assess an annual fee for municipal wastewater dischargers. Municipal permittees will be asked to submit information regarding the population served by the treatment works through the E-Permitting system. This information is most easily accessed on line through the U.S. Census Bureau Factfinder. Municipalities may choose to use the state-wide value for the average number per household or the number specific to the region served by the POTW.
DEQ developed a User’s Guide to Permitting and Compliance, Volume 2 POTWs to help municipal users apply for and understand an IPDES permit. Learn more.
Industrial permits are all those not considered to be POTWs. Some examples of activities that need industrial permit coverage for their discharge to surface waters include mining, silviculture, food processing, aquaculture, concentrated animal feeding operations, and privately owned treatment works treating domestic sewage.
Each year DEQ will assess an annual fee for these dischargers (except those privately owned treatment works treating domestic sewage). Industrial dischargers are classified as minor or major based on DEQ’s permit rating worksheet.
DEQ developed a User’s Guide to Permitting and Compliance, Volume 3 non-POTWs to help municipal users apply for and understand an IPDES permit. Learn more.
Storm Water Permits
Storm water is rain or melting snow that does not immediately soak into the ground. Storm water runs off of land and hard surfaces, such as streets, parking lots, and rooftops, and picks up pollutants, such as fertilizers, dirt, pesticides, and oil and grease. Eventually, storm water soaks into the ground or discharges to surface water (usually through storm drains), bringing the pollutants with it. Federal, state, and local government agencies; business and industry; and individual landowners all share responsibility for storm water management in Idaho. Storm water permits are typically general permits and cover storm water runoff from construction projects, industrial facilities, and municipal separate storm sewer systems (MS4).
Storm water permits are assessed according to the fee schedule below. Permittees can submit payments electronically through Access Idaho. Learn more.
Individual permits are subject to fees according to the fee schedule identified at IDAPA 58.01.25.110. For municipal treatment works, the fee is calculated at a rate of $1.74 per equivalent dwelling unit (EDU). More information on EDUs is available in the Idaho Pollutant Discharge Elimination System: User's Guide to Permitting and Compliance Volume 1—General Information.
Individual permit fees for industrial applicants are set at flat rates of $4,000 for minor facilities and $13,000 for major facilities. Minor and major facility rankings are determined using the IPDES Permit Ranking Worksheet.
|Municipal||$1.74 per EDU1|
|Construction General Permit (CGP)||$200||$0|
|Low Erosivity Waiver||$125||$0|
|Industrial (Multi-Sector General Permit [MSGP])||$1,500||$1,000|
|Certificate of No Exposure (MSGP)||$250||$100|
|Other General Permits||$0||$0|
1EDU = equivalent dwelling unit