Ressler & Associates

What Ressler & Associates does

Ressler & Associates, Inc. is a privately held manufacturers' representative firm founded in 1991 and headquartered in Ballwin, Missouri. The company specializes in water and wastewater treatment process equipment, representing more than 70 manufacturers across Eastern Missouri, Southern Illinois, and Western Kentucky. The firm was established when founder and CEO Ken Ressler acquired Pohlkotte Ressler Corporation in May 1991, rebranding it under its current name; Ressler had been a partner in the predecessor entity since 1981. The company operates with a six-person executive team — CEO Ken Ressler, President Jimmy Jackson (joined March 2018 from municipal operations background), VP of Sales Jim Hopkins (40 years of industry experience), VP/Sales Engineer Brad Calzone (mechanical engineering), CFO Michael Heitert (joined 2013), and Office Manager Sue Petersen (since 2013).

The company's product surface spans 18 equipment categories: aeration, blowers, chemical feed systems, clarifiers, digestion equipment, filters, flow control/metering, grit and screening, hazardous waste treatment, industrial waste equipment, material handling, mixers, pumps, sludge handling, special equipment, tanks, and valves. Major manufacturer partnerships include Parkson Corporation (across all product categories) and the consolidated Xylem/EVOQUA brand family (Aerators Inc, Jet Tech, Davco, JWI, Sanitaire, Wallace & Tiernan, Wedeco, Zimpro, Envirex, Leopold, etc.), alongside a long tail of specialist partners (APG-Neuros, Netzsch, JWC Environmental, Hayward Gordon/Ebara, Tank Connection, CST Covers, GlascoUV, and others). The firm also delivers factory-direct maintenance and repair services including grinder exchanges, flow meter calibration, chlorinator and metering pump rebuilds, mechanical inspections, and operator maintenance training.

Ressler & Associates operates on a commission-based revenue model, earning transaction fees on equipment sales facilitated between manufacturer partners and end customers within its defined three-state territory. Its go-to-market motion is sales-led: field sales engineers and representatives conduct annual territory outreach to consulting engineers, municipalities, industrial facilities, and owner-operators, providing process designs, budget pricing, design reviews, and integration assistance. The firm has no disclosed revenue, no external funding, no parent company, and no public-company status; it operates as a founder-owned traditional channel intermediary in the municipal and industrial water/wastewater treatment market.

Name

Ressler & Associates

Legal name

Ressler & Associates, Inc.

Website

https://resslerassociates.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

1–10 employees

Short description

Ressler & Associates is a privately held manufacturers' representative firm selling water and wastewater treatment process equipment from 70+ manufacturers to consulting engineers, municipalities, and industrial clients across Eastern Missouri, Southern Illinois, and Western Kentucky.

Ownership category

akta.pro rank

Headquarters

HQ city

Ballwin

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Others

Revenue model

1. Commission-based Sales: As a manufacturer's representative firm, Ressler & Associates earns commissions on equipment sales made to customers in their territory (Eastern Missouri, Southern Illinois, Western Kentucky). They represent multiple manufacturers of water and wastewater treatment equipment including aerators, blowers, chemical feed systems, clarifiers, filters, pumps, valves, and complete process systems.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Ressler & Associates is a manufacturers' representative firm that sells water and wastewater treatment process equipment on behalf of 70+ manufacturers (including Xylem/Evoqua, Parkson Corporation, JWC Environmental, Hayward Gordon, Netzsch, and others) to consulting engineers, municipalities, owners/operators, and industrial clients within an exclusive territory covering Eastern Missouri, Southern Illinois, and Western Kentucky. The firm supplies 18 equipment categories (aeration, blowers, chemical feed, clarifiers, digestion, filters, flow control, grit & screening, hazardous waste, industrial waste, material handling, mixers, pumps, sludge handling, special equipment, tanks, and valves) and complements equipment sales with factory-trained aftermarket services including grinder exchanges, flow meter calibration, chlorinator and pump rebuilds, mechanical inspections, and operator maintenance training.

Product overview

Ressler & Associates is a manufacturers' representative firm specializing in water and wastewater treatment process equipment. The company represents over 80 manufacturers providing a comprehensive portfolio of equipment across 18 product categories including Aeration Equipment, Blowers, Chemical Feed Systems, Clarifiers, Digestion Equipment, Filters, Flow Control/Metering, Grit & Screening, Hazardous Waste Treatment, Industrial Waste Equipment, Material Handling, Mixers, Pumps, Sludge Handling, Special Equipment, Tanks, and Valves. They also offer maintenance and repair services including factory exchanges, calibration, inspections, and operator training. The company operates as a sales intermediary, working with consulting engineers, municipalities, and industrial clients across Eastern Missouri, Southern Illinois, and Western Kentucky.

Differentiator

Problem solved

Functional benefit

Products and services

• Aeration Equipment Aeration systems for water and wastewater treatment including Biolac Brush Rotor, Coarse Bubbles, Fine and Extra Fine Bubbles, Floating Aerators, Ground Water Aerators, Jet Aeration, Lagoon Aeration, Oxidation Ditch (Orbal), Sequential Batch Reactors, and Vertical Loop Reactor, sourced from manufacturers such as Aerators Inc, Artesian of Pioneer, Envirex, Parkson Corporation, SSI Aeration, and Veolia (Kruger).
• Blowers Blower systems including centrifugal, positive displacement, and regenerative blowers from manufacturers APG-Neuros, Gardner Denver (Ingersoll Rand), and Universal Blower Pac.
• Chemical Feed Systems Chemical feed equipment including analyzers/controllers, carbon dioxide systems, chemical induction units, chlorinator/gas feeders, chlorine leak detectors, Cl2/pH/ORP monitors, dechlorination systems, dry/liquid polymer feed, emergency scrubbers, hypochlorite generators, lime silos, lime slakers, metering pumps, ozone systems, potassium permanganate systems, scales, and volumetric feeders from manufacturers such as Burnett Lime, Eagle Microsystems, RDP Technologies, and Wallace & Tiernan.
• Clarifiers Clarifier equipment including algae sweep brushes, circular and rectangular clarifiers, density current baffles, dissolved air flotation, inclined plate (Lamella), non-metallic and loop chain units, pre-fabricated package units, replacement drives, stainless and cast steel chain, tube settlers, and Up-Flow Tow Bro systems, sourced from Envirex, Enviropax, Ford Hall Company, FRC, M.W. Watermark, NEFCO Systems, and Parkson Corporation.
• Digestion Equipment Digestion systems including anaerobic and aerobic digestion, fixed and floating covers, fluidized bed systems, gas cogeneration systems, gas storage and safety equipment, heater/heat exchangers, mixing systems, and scrubbers from Envirex, EnviroMix, and Marcab Company.
• Filters Filter systems including activated carbon, disc filters, drum filters, DynaSand, Hydroclear, membrane systems, pressure and gravity filters, softeners, traveling bridge, trickling, and water/wastewater filters from Artesian of Pioneer, Davco, Parkson Corporation, and Zimpro.
• Flow Control and Metering Equipment Flow control and metering equipment including co-polymer gates, floating baffles, flowmeters, magnetic flowmeters, Palmer Bowlus flumes, Parshall flumes, portable flowmeters, shear gates, sluice/slide/stop and weir gates, staff gauges, wastewater samplers, and weirs and baffles from Environetics, Johnson Screens (Aqseptence Group), Manning Environmental, and NEFCO Systems.
• Grit and Screening Equipment Grit and screening equipment including Auger Monster, drum and rotating screens, fine screens, grit classification, grit systems, mechanical bar screens, microscreens, multi-tray grit removal, non-metallic trash racks, replacement screens and parts, static screens, and traveling water screens from Johnson Screens, JWC Environmental, Parkson Corporation, and WSG & Solutions.
• Industrial and Hazardous Waste Treatment Equipment Industrial and hazardous waste treatment systems including BTWX removal, heavy metals removal, and lagoon de-watering for hazardous applications, plus oil/water separators, package systems, shredders, and turn-key systems from M.W. Watermark, MacDermid Envio Solutions, Nijhuis Water Technology, and Parkson Corporation.
• Mixers and Pumps Mixing equipment (jet mixing, mechanical, polymer mixing, static inline, submersible) from Hayward Gordon, Enviropax, and Parkson Corporation, plus pump systems (metering pumps, screw pumps, submersibles) from Hayward Gordon (Ebara HG), Netzsch, and Zimpro.
• Sludge Handling Equipment Sludge handling equipment including ATA, belt filter press, centrifuges, Class A and B pasteurization, contract de-watering, belt and screw conveyors, de-watering beds, dryers, Muffin Monster grinding, incineration, lime stabilization, recessed chamber press, and screw press from Gravity Flow Systems, Hankin Environmental Systems, JWC Environmental, JWI, M.W. Watermark, Park Process, Putzmeister, and RDP Technologies.
• Tanks and Valves Tank systems (bolted and welded steel, fiberglass, stainless steel, standpipes and ground storage, tank liners) from Tank Connection, plus valve equipment (butterfly, Cl2 emergency shut-off, flap, mud valves, pressure relief, rebuilding and parts, rectangular, telescoping).
• Maintenance and Repair Services Factory-trained aftermarket services for the equipment the firm sells, including factory exchanges on grinders, calibration of flow meters, chlorinator and metering pump rebuilds, mechanical inspections, operator maintenance training, periodic inspections, and field repairs for municipal and industrial water/wastewater clients.

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

49 partnerships are on record, tiered core and minor.

• Xylem (EVOQUA) BrandscoreChannel Partner/ Reseller/ DistributorXylem (EVOQUA) brands represented include Aerators Inc, Jet Tech, RJ Environmental, Davco, JWI, Sanitaire, Davis Process, Leopold, Wallace & Tiernan, Wedeco, Zimpro, Envirex, ETS/UV, and Ostara. These are represented in Eastern Missouri, Southern Illinois, and Western Kentucky.
• Parkson CorporationcoreChannel Partner/ Reseller/ DistributorParkson Corporation is represented across all product categories including aeration, clarifiers, filters, grit & screening, industrial waste, and mixers. Major strategic partner in the water/wastewater treatment equipment line.
• APG-NeurosminorChannel Partner/ Reseller/ DistributorRepresented for blower products including centrifugal, positive displacement, and regenerative blowers in Eastern Missouri, Southern Illinois, and Western Kentucky.
• Gardner Denver (Ingersoll Rand)minorChannel Partner/ Reseller/ DistributorRepresented for blower products in the territory.
• Johnson Screens (Aqseptence Group)minorChannel Partner/ Reseller/ DistributorRepresented for flow control/metering and grit & screening equipment including screens and water screens.
• M.W. WatermarkminorChannel Partner/ Reseller/ DistributorRepresented for clarifiers, industrial waste, and sludge handling equipment.
• JWC EnvironmentalminorChannel Partner/ Reseller/ DistributorRepresented for grit & screening, material handling, and sludge handling equipment including the Muffin Monster grinder product line.
• Hayward Gordon (Ebara HG)minorChannel Partner/ Reseller/ DistributorRepresented for mixers and pumps in Eastern Missouri and Southern Illinois.
• NEFCO SystemsminorChannel Partner/ Reseller/ DistributorRepresented for clarifiers and flow control/metering equipment.
• Tank ConnectionminorChannel Partner/ Reseller/ DistributorRepresented for tanks (bolted & welded steel, fiberglass, stainless steel) and special equipment.
• NetzschminorChannel Partner/ Reseller/ DistributorRepresented for pumps including metering pumps, screw pumps, and submersibles.
• Artesian of Pioneer, IncminorChannel Partner/ Reseller/ DistributorRepresented for aeration, filters, and special equipment products.
• Veolia (Kruger)minorChannel Partner/ Reseller/ DistributorRepresented for aeration products including oxidation ditch Orbal systems.
• SSI Aeration, Inc.minorChannel Partner/ Reseller/ DistributorRepresented for aeration equipment in Eastern Missouri and Southern Illinois.
• EnvirexminorChannel Partner/ Reseller/ DistributorRepresented for aeration, clarifiers, digestion, and special equipment.
• Burnett Lime Company, IncminorChannel Partner/ Reseller/ DistributorRepresented for chemical feed products including lime silos and slakers in Eastern Missouri and Southern Illinois.
• Eagle MicrosystemsminorChannel Partner/ Reseller/ DistributorRepresented for chemical feed equipment.
• RDP Technologies, IncminorChannel Partner/ Reseller/ DistributorRepresented for chemical feed and sludge handling equipment including lime stabilization.
• Wallace & TiernanminorChannel Partner/ Reseller/ DistributorRepresented for chemical feed equipment including chlorinators and gas feeders.
• Enviropax, IncminorChannel Partner/ Reseller/ DistributorRepresented for clarifiers and mixers.
• Ford Hall CompanyminorChannel Partner/ Reseller/ DistributorRepresented for clarifiers.
• FRC SystemsminorChannel Partner/ Reseller/ DistributorRepresented for clarifiers in Eastern Missouri and Southern Illinois.
• Gravity Flow SystemsminorChannel Partner/ Reseller/ DistributorRepresented for sludge handling equipment.
• Hankin Environmental SystemsminorChannel Partner/ Reseller/ DistributorRepresented for digestion and sludge handling equipment.
• JWIminorChannel Partner/ Reseller/ DistributorRepresented for sludge handling equipment.
• Park ProcessminorChannel Partner/ Reseller/ DistributorRepresented for sludge handling in Eastern Missouri and Southern Illinois.
• PutzmeisterminorChannel Partner/ Reseller/ DistributorRepresented for sludge handling equipment.
• CST CoversminorChannel Partner/ Reseller/ DistributorRepresented for special equipment including aluminum and fiberglass domes.
• DPI Water SolutionsminorChannel Partner/ Reseller/ DistributorRepresented for special equipment.
• GlascoUVminorChannel Partner/ Reseller/ DistributorRepresented for ultraviolet disinfection equipment.
• Northern Filter MediaminorChannel Partner/ Reseller/ DistributorRepresented for special equipment including trickling filter media and water filter media.
• Raschig USA, Inc.minorChannel Partner/ Reseller/ DistributorRepresented for special equipment in Eastern Missouri and Southern Illinois.
• RJ EnvironmentalminorChannel Partner/ Reseller/ DistributorRepresented for special equipment.
• DuPont Water Solutions (Memcor)minorChannel Partner/ Reseller/ DistributorRepresented for membrane systems.
• KrugerminorChannel Partner/ Reseller/ DistributorRepresented for treatment technologies.
• Aerator SolutionsminorChannel Partner/ Reseller/ DistributorRepresented for aeration equipment.
• MLM Conveying SystemsminorChannel Partner/ Reseller/ DistributorRepresented for material handling equipment.
• Nijhuis Water TechnologyminorChannel Partner/ Reseller/ DistributorRepresented for industrial waste treatment equipment.
• Serpentix ConveyorminorChannel Partner/ Reseller/ DistributorRepresented for material handling equipment including flexible conveyor-pathwinder systems.
• Universal Blower Pac, IncminorChannel Partner/ Reseller/ DistributorRepresented for blower equipment.
• WSG & Solutions, IncminorChannel Partner/ Reseller/ DistributorRepresented for grit & screening equipment.
• Amiad North AmericaminorChannel Partner/ Reseller/ DistributorRepresented for filtration equipment in Eastern Missouri and Southern Illinois.
• Assmann CorporationminorChannel Partner/ Reseller/ DistributorRepresented for tanks and containers in Eastern Missouri and Southern Illinois.
• Belding Tank TechnologiesminorChannel Partner/ Reseller/ DistributorRepresented for tank equipment in Eastern Missouri and Southern Illinois.
• EnviroMixminorChannel Partner/ Reseller/ DistributorRepresented for digestion and mixer equipment in Eastern Missouri and Southern Illinois.
• EnviroMixminorChannel Partner/ Reseller/ DistributorRepresented for digestion equipment including anaerobic and aerobic digestion systems.
• Kusters WaterminorChannel Partner/ Reseller/ DistributorRepresented for water treatment equipment in Eastern Missouri and Southern Illinois.
• PeroxyChemminorChannel Partner/ Reseller/ DistributorRepresented for chemical treatment in Eastern Missouri and Southern Illinois.
• UGSI (Cleanwater1)minorChannel Partner/ Reseller/ DistributorRepresented for treatment equipment in Eastern Missouri and Southern Illinois.

Scale indicators2 records

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• Pentair: Pentair is a broad water solutions company spanning residential, commercial, and industrial / municipal water treatment equipment with a wider portfolio than Ressler's focused industrial / municipal line. Pentair uses both direct sales and independent reps in the U.S., making it a broad incumbent whose flow control, filtration, and pump categories overlap with several of the 18 categories Ressler represents.
• Mueller Water Products: Mueller Water Products is an established North American manufacturer of water infrastructure products including valves, hydrants, and pipe-related equipment used by the same municipal and consulting engineer customers that Ressler serves. Mueller sells through a mix of independent reps and direct sales, making it a broad incumbent with overlapping distribution channels and end-customer overlap in the municipal water segment.
• Xylem: Xylem is a global water technology major and one of Ressler's largest manufacturer principals through the legacy Evoqua, Zimpro, Wallace & Tiernan, Leopold, Sanitaire, Wedeco, and Davco brands. Xylem operates a hybrid channel - independent reps like Ressler in some markets and direct enterprise sales teams in others - making it a broad incumbent that overlaps with Ressler's product portfolio while competing on direct-specification influence in adjacent territories.
• Veolia Water Technologies: Veolia Water Technologies is a global major in municipal and industrial water/wastewater solutions and is one of Ressler's manufacturer principals through the Kruger / Veolia oxidation ditch product line. Veolia's broader portfolio across treatment technologies, services, and direct municipal contracting makes it a broad incumbent with overlapping product categories and significant direct-sales channel presence in Ressler's geography.
• Evoqua Water Technologies: Evoqua Water Technologies (now part of Xylem) is a long-established North American water and wastewater treatment equipment and service provider whose brands - Sanitaire, Wallace & Tiernan, Envirex, JWI, RJ Environmental, Zimpro, Davco, Leopold, and ETS/UV - are among Ressler's core manufacturer principals. Evoqua operates a hybrid direct-sales and rep-driven channel, making it a broad incumbent whose product mix most directly mirrors Ressler's portfolio.

Emerging players

• Hayward Gordon: Hayward Gordon (Ebara HG) is a specialty manufacturer of mixers and pumps for industrial and municipal process applications and is one of Ressler's manufacturer principals in Eastern Missouri and Southern Illinois. Hayward Gordon uses independent reps like Ressler to reach municipal and industrial customers, making it an emerging peer with meaningful overlap in two of Ressler's 18 product categories.
• Trojan Technologies: Trojan Technologies is a specialty manufacturer of UV disinfection systems serving municipal water and wastewater treatment - directly overlapping with the UV disinfection / special equipment portion of Ressler's portfolio. Trojan uses a hybrid direct-sales and rep-driven channel in North America, making it an emerging peer with partial overlap on a high-growth disinfection technology segment.
• Aqua-Aerobic Systems: Aqua-Aerobic Systems is a niche manufacturer specializing in aeration and biological treatment systems for municipal wastewater - directly overlapping with one of Ressler's principal product categories and serving the same consulting engineer and municipal buyer base. It represents the kind of focused specialty manufacturer whose products flow through rep networks like Ressler, making it an emerging peer with partial but direct overlap.
• JWC Environmental: JWC Environmental is a specialty manufacturer of grinders, screens, and sludge-handling equipment - including the Muffin Monster grinder line - represented by Ressler in three product categories (grit & screening, material handling, sludge handling). JWC sells through independent rep networks like Ressler, making it an emerging peer whose narrow specialty offerings intersect with a meaningful slice of Ressler's portfolio.

Direct peers

• Parkson Corporation: Parkson Corporation is a water/wastewater treatment equipment manufacturer that distributes through independent manufacturers' representative networks across multiple U.S. regions - exactly Ressler's go-to-market model. Ressler is one of Parkson's representatives covering aeration, clarifiers, filters, grit & screening, industrial waste, and mixers across their Eastern Missouri, Southern Illinois, and Western Kentucky territory. Other Parkson reps in adjacent geographies are direct peers of Ressler in both channel model and product offering alignment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ressler & Associates