Stormwater BMP Installation, Maintenance, and Inspection Services in Indiana
Indiana's stormwater program is administered by the Indiana Department of Environmental Management (IDEM), with construction site stormwater regulated under the NPDES Construction General Permit for sites disturbing one or more acres. Post-construction stormwater requirements are implemented through local MS4 programs across Indiana's municipalities and counties. Indiana is part of the Great Lakes drainage basin, which creates specific water quality sensitivities around phosphorus and sediment loading that influence BMP design requirements and underscore the importance of consistent stormwater maintenance. Many Indiana communities use the iSWM (integrated Stormwater Management) framework for post-construction design guidance. Exact Stormwater Management provides stormwater BMP installation, maintenance, and inspection services across Indiana, supporting property owners, contractors, and municipalities working under IDEM and local MS4 program requirements.
Regulatory Context
Indiana's stormwater construction permit program is administered by IDEM, requiring a SWPPP and NPDES Construction General Permit coverage for sites disturbing one or more acres. Post-construction stormwater requirements in Indiana are implemented through local MS4 programs, with many communities adopting the iSWM criteria manual for post-construction BMP design. Indiana's location within the Great Lakes drainage basin adds an environmental context to stormwater compliance: phosphorus and sediment loading from Indiana properties ultimately reaches the Great Lakes system, making BMP performance and maintenance a water quality issue with regional significance beyond the property boundary. IDEM participates in Great Lakes water quality protection programs, and Indiana MS4 permittees are subject to nutrient reduction obligations consistent with this regional framework. Local MS4 programs establish specific inspection frequency and maintenance documentation requirements for post-construction BMPs, which vary by municipality and county across Indiana. Exact provides installation, maintenance, and inspection services addressing IDEM construction permit requirements and local MS4 post-construction obligations throughout Indiana.
Need a certified stormwater inspection or maintenance plan in Indiana? Call (804) 302-5151 or contact us to request a quote.
Who We Serve in Indiana
Exact serves commercial property owners, HOAs, municipalities, general contractors, and land developers across Indiana. Our clients include commercial property owners managing post-construction BMPs under local MS4 programs, municipalities in iSWM communities with specific design and maintenance criteria, construction contractors working under active IDEM NPDES permits, and Great Lakes watershed property owners seeking to minimize nutrient and sediment loading. We serve clients in Indianapolis, Fort Wayne, South Bend, and throughout Indiana.
Frequently Asked Questions: Indiana Stormwater BMP Services
What are Indiana's stormwater maintenance requirements?
Indiana's post-construction stormwater BMP maintenance requirements are established by local MS4 programs, which vary by municipality and county. Many Indiana communities have adopted the iSWM criteria manual, which provides design and maintenance guidance for post-construction stormwater practices. IDEM administers Indiana's construction stormwater program, requiring NPDES Construction General Permit coverage and a SWPPP for sites disturbing one or more acres. Property owners should verify specific maintenance requirements with their local MS4 program.
Who provides BMP inspection in Indiana?
Stormwater BMP inspections in Indiana are governed by local MS4 program requirements, which specify who is qualified to perform inspections and what documentation must be provided. Exact Stormwater Management provides BMP inspection and maintenance services across Indiana, with crews experienced in IDEM construction permit requirements and local MS4 post-construction standards, including communities operating under iSWM criteria. Call (804) 302-5151 to schedule a stormwater inspection or discuss an annual maintenance program.
Why does Great Lakes watershed location matter for stormwater compliance in Indiana?
Indiana's location within the Great Lakes drainage basin means that phosphorus and sediment loading from stormwater runoff ultimately reaches the Great Lakes system, one of the world's most significant freshwater resources. This creates a regional water quality context for stormwater compliance that extends beyond property boundaries. IDEM participates in Great Lakes water quality protection programs, and Indiana MS4 permittees may have nutrient reduction obligations consistent with this framework. Consistent BMP maintenance is especially important for Indiana properties in the Great Lakes watershed.
What is iSWM and how does it apply in Indiana?
iSWM stands for integrated Stormwater Management, a technical criteria framework adopted by many Indiana communities for post-construction stormwater BMP design and performance standards. Communities that have adopted iSWM use its criteria manual as the basis for post-construction permit requirements, design review, and maintenance documentation. Property owners with post-construction BMPs in Indiana iSWM communities should ensure their facilities meet iSWM performance standards and that maintenance documentation aligns with iSWM criteria.
What stormwater installation and maintenance services are available in Indiana?
Exact Stormwater Management provides stormwater BMP installation, inspection, annual maintenance programs, erosion control, geomembrane liner installation, permeable pavement meeting iSWM criteria, pond management through our Aquatics Group, and green infrastructure throughout Indiana. Our services address both IDEM NPDES construction permit requirements and local MS4 post-construction obligations. Contact (804) 302-5151 to discuss your Indiana stormwater compliance needs.
Exact Stormwater Management serves property managers, HOAs, developers, and contractors across Indiana. Contact us today to discuss your stormwater compliance needs.
Corey Simonpietri
804-627-2942
corey@exactstorm.com
SPECIALTY INSTALLATIONS
• Geomembrane / Liner
• Underground Detention
• Permeable Pavement
• Green Infrastructure
• Bioretention
core areas:
With millions of cubic feet of underground detention installed, Exact Stormwater Management is your go-to partner to ensure proper installation of your detention system. We make sure the system is installed correctly, and can help navigate around common pitfalls. We install every system out there, including arched chambers (ADS’ StormTech and Cultec’s Recharger), modular box systems (Ferguons’s R-Tank, Brentwood’s StormTank, and ACO’s StormBrixx), and concrete vaults (StormTrap and StormCapture).
Underground Detention - More Info
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
INSTALLATION: Bioretention Facility, Biofilter, Dry Swale
Bioretention systems, biofilters, rain gardens, dry swales, compost amended grass swales, and many other variations of a semi-natural stormwater filter all serve to clean stormwater before it enters our streams. We specialize in proper installation of these systems - the right materials in the right arrangement at the right time - to make sure the system works as designed.
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
INSTALLATION: GREEN INFRASTRUCTURE
Green Infrastructure refers to a strategic approach that utilizes natural processes and systems to manage stormwater, enhance urban environments, and improve overall ecosystem health. This method emphasizes the preservation and restoration of natural landscapes while integrating them into urban design. Interventions such as rain gardens, permeable pavement, and bioswales work collectively to absorb, infiltrate, and filter stormwater runoff, reducing flooding risks and pollutant discharge into waterways.
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
We install many types of impermeable liners in the Southeast. Liners are typically 30 mil PVC, HDPE, LDPE, RPP, RPE, XR-5, and many other types of liner for the best fit for your application. With personnel in the liner business since 1992, we are the go-to company for liner installations. Underground Detention - More Info
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
INSTALLATION: Permeable Pavement
Permeable pavements are alternative paving surfaces that allow stormwater runoff to filter through voids in the pavement surface into an underlying stone reservoir, where it is temporarily stored and/or infiltrated. We install many types of permeable pavements from grass pavers to concrete brick-type pavers.
Example Installation of Permeable Pavers