Why aging infrastructure, federal funding, PFAS regulation, lead service line replacement, stormwater needs, and industrial water demand are creating acquisition opportunities for lower-middle-market manufacturers and service companies.

Executive M&A Summary

The U.S. water and wastewater infrastructure market is one of the more attractive lower-middle-market manufacturing and infrastructure-service sectors because demand is driven by non-discretionary replacement, regulatory compliance, public-health requirements, and decades of deferred municipal investment.

The opportunity is broader than utility construction. It extends across pipe, pumps, valves, hydrants, filtration, treatment systems, membranes, chemicals, sensors, controls, testing, trenchless rehabilitation, stormwater systems, decentralized wastewater, biosolids handling, and specialty engineering / field services.

EPA’s 7th Drinking Water Infrastructure Needs Survey estimated $625 billion of drinking-water system needs over 20 years, while EPA’s 2022 Clean Watersheds Needs Survey reported $630.1 billion of wastewater, stormwater, decentralized wastewater, nonpoint-source control, water reuse and related clean-water needs. Together, that implies well over $1.2 trillion of identified U.S. water infrastructure need before considering cost inflation, small-system underreporting, and future regulation.

1. Market Size and 2020–2026 Change

The broadest “market size” depends on whether one measures utility spending, capital construction, product and equipment revenue, or service revenue. For M&A purposes, the most useful view is capital and repair/replacement spending because that spending drives demand for lower-middle-market manufacturers, fabricators, specialty contractors, field-service companies, testing laboratories, and engineered-product suppliers.

Local government spending on municipal water and sewer reached a reported $144.6 billion in 2020, an all-time high at the time. Since then, federal funding and municipal capital programs have accelerated. The Infrastructure Investment and Jobs Act delivered more than $50 billion for drinking water, wastewater and stormwater infrastructure, the largest federal water investment in U.S. history.

Public construction spending data also demonstrates the market shift. Public construction spending for water supply rose from $12.7 billion in 2012 to $31.0 billion in 2024, while sewage and waste-disposal spending rose from $20.9 billion to $43.6 billion over the same period. By January 2026, total construction spending was running at a seasonally adjusted annual rate of $36.5 billion for water supply and $54.3 billion for sewage and waste disposal, or roughly $90.8 billion combined on an annualized construction-spending basis.

Bluefield Research’s 2025–2035 forecast is especially relevant for equipment and infrastructure suppliers. It projects U.S. municipal water and wastewater treatment infrastructure CAPEX of $515.4 billion through 2035, growing from $37.2 billion annually to $57.3 billion annually, a 4.4% compound annual growth rate. Wastewater represents 58% of the forecast, or about $310.4 billion, with spending focused on treatment, pumping, lift stations and storage assets.

2. Principal Market Drivers

Aging pipes, plants and buried assets

Water and wastewater systems are capital-intensive, long-lived assets, and many systems are now beyond their intended useful life. EPA’s drinking-water needs estimate and clean-water needs estimate both confirm that the market is fundamentally a repair, replacement and modernization market, not merely a new-build market.

Regulatory pressure

Two regulatory drivers are especially important. First, EPA’s Lead and Copper Rule Improvements require drinking-water systems to identify and replace lead pipes within 10 years. Second, PFAS regulation is forcing utilities and industrial users to invest in testing, monitoring, granular activated carbon, ion exchange, membranes, advanced filtration and residuals management.

Federal and state funding

The Bipartisan Infrastructure Law / Infrastructure Investment and Jobs Act created more than $50 billion of water infrastructure support. Although this funding does not close the entire infrastructure gap, it improves project visibility and accelerates procurement for replacement pipe, pumps, valves, treatment equipment, metering, engineering and installation services.

Climate resilience and stormwater

EPA’s clean-water needs survey identifies $115.3 billion of stormwater-management needs. Flooding, combined sewer overflows, storm-intensity changes, urban development and consent orders are increasing demand for stormwater systems, detention/retention products, green infrastructure, drainage products and related maintenance.

Industrial water demand

Semiconductor plants, data centers, energy, food processing, pharmaceuticals and advanced manufacturing are increasing demand for ultra-pure water, water reuse, cooling water treatment, discharge compliance and wastewater pretreatment. Ecolab’s 2025 agreement to acquire Ovivo’s electronics ultra-pure water business for about $1.8 billion reflects this demand, particularly from semiconductor and AI-related infrastructure.

3. Subsector Map and Market Outlook

The table below focuses on subsectors most relevant to manufacturers, specialty contractors, engineered-product suppliers and infrastructure-service companies serving the water/wastewater market.

Subsector	What It Includes	Market Size / 2020–2026 Change	10-Year Growth Outlook	M&A Relevance
Water / wastewater treatment infrastructure CAPEX	Treatment plants, pumping, lift stations, storage, process upgrades	Bluefield projects $515.4B of U.S. municipal treatment infrastructure CAPEX from 2025–2035, rising from $37.2B to $57.3B annually.	4.4% CAGR through 2035.	Strong platform and add-on target universe; recurring regulatory demand.
Pipe, distribution and collection systems	Ductile iron, PVC, HDPE, concrete pipe, fittings, sewer pipe, service lines	U.S. water/wastewater pipe market estimated at $6.5B in 2024, $6.87B in 2025, and projected to $12.0B by 2035.	Approx. 5.7% CAGR 2025–2035.	Attractive where companies have municipal approvals, stocking/distribution, or proprietary fittings.
Trenchless rehabilitation	CIPP, pipe bursting, sliplining, manhole rehab, inspection, lateral repair	North America trenchless pipe rehab estimated at $1.84B in 2024, $1.97B in 2025, projected to $3.05B by 2032.	Approx. 6.45% CAGR to 2032.	Premium interest due to labor savings, lower disruption, and aging sewer/water networks.
Treatment equipment	Clarifiers, screens, aeration, filtration, disinfection, sludge equipment, packaged systems	U.S. water and wastewater treatment equipment revenue was $7.38B in 2025, projected to $9.73B by 2033.	Approx. 3.6% CAGR 2026–2033.	Strong for engineered products with aftermarket parts, service and replacement demand.
Pumps and lift-station equipment	Centrifugal, submersible, vertical turbine, grinder, booster and process pumps	North America water/wastewater pump market estimated around $1.91B in 2025, projected to $2.46B by 2032.	Approx. 3.8% CAGR 2026–2032.	Buyers value installed base, service technicians, repair capability and municipal relationships.
Valves, hydrants and specialty flow-control	Insertion valves, gate valves, butterfly valves, hydrants, actuators, line stops	U.S. valves market in water/wastewater expected to grow from $1.82B in 2025 to $2.31B by 2031.	Approx. 4.06% CAGR 2026–2031.	Specialty valve manufacturers can command strong premiums if they reduce downtime or support repair without shutdown.
Smart water / digital water	AMI meters, leak detection, SCADA, sensors, analytics, pressure monitoring, IIoT valves	U.S. smart-water market cited at about $6.23B, with U.S. CAGR around 10.4%.	Roughly 10%+ CAGR.	Higher-growth, higher-multiple subsector; buyers prize software, recurring revenue and data capture.
Water quality testing and monitoring	Lab testing, field instruments, online analyzers, PFAS testing, compliance monitoring	U.S. water quality testing and monitoring estimated around $1.44B in 2025, $1.87B in 2026, projected to $2.40B by 2032.	Approx. 4.9% CAGR 2026–2032.	Attractive where revenue is recurring, regulatory-driven and tied to PFAS, lead, industrial discharge or utility compliance.
Water treatment chemicals	Coagulants, flocculants, corrosion inhibitors, disinfectants, anti-scalants, specialty chemicals	U.S. water treatment chemicals generated $7.73B in 2024, projected to $9.26B by 2030.	Approx. 3.0% CAGR 2025–2030.	Distribution density, route density, technical service and customer retention are key value drivers.
Membranes / advanced filtration / PFAS treatment	RO, ultrafiltration, nanofiltration, ion exchange, GAC systems, PFAS removal	Global membrane water/wastewater treatment market estimated at $6.91B in 2026, projected to $9.80B by 2031.	Approx. 7.24% CAGR 2026–2031.	Strong strategic interest due to PFAS, reuse, industrial water and semiconductor demand.
Stormwater infrastructure	Detention, retention, drainage, green infrastructure, separators, CSO mitigation	U.S. stormwater management market estimated at $8.25B in 2025; EPA identifies $115.3B of stormwater needs.	Approx. 7.8% CAGR in one U.S. estimate.	Attractive for manufacturers of engineered stormwater products, precast, drainage systems and maintenance services.
Water reuse / recycle	Industrial reuse, municipal reuse, filtration, disinfection, reclaimed water systems	U.S. water recycle & reuse market generated $3.88B in 2023, projected to $7.30B by 2030.	Approx. 9.6% CAGR 2024–2030.	High-growth niche driven by scarcity, industrial reuse, semiconductor water demand and ESG commitments.
Decentralized wastewater	Septic replacement, package plants, cluster systems, onsite treatment, rural wastewater	EPA identifies $74.7B of decentralized wastewater needs in the 2022 CWNS.	Market estimates vary; global decentralized water treatment estimates show double-digit growth, but U.S. data is less consistently reported.	Fragmented market; attractive for regional consolidators with permitting, installation and maintenance capability.
Biosolids/sludge handling/residuals	Dewatering, drying, hauling, digestion, land application, PFAS-related handling	Global biosolids market estimated at 34.28M tons in 2025, growing to 40.71M tons by 2030.	Greater than 3.5% CAGR by volume through 2030.	PFAS scrutiny may create both risk and opportunity; diligence must focus on disposal exposure and regulatory compliance.
Industrial water/wastewater services	Pretreatment, process water, cooling water, ultra-pure water, discharge compliance	Industrial water treatment market estimated at $50.5B globally in 2026, projected to $84.6B by 2036.	Approx. 5.3% CAGR 2026–2036.	Very attractive where customers are semiconductors, data centers, pharmaceuticals, food, power or specialty manufacturing.

4. Subsectors Most Attractive for Lower-Middle-Market M&A

The water / wastewater market is broad, but not every subsector will trade at the same multiple. The greatest buyer competition is likely to concentrate in businesses with proprietary products, regulatory-driven demand, recurring service revenue, high technical barriers, or a direct role in accelerating repair and replacement of aging infrastructure.

1. Specialty valve, hydrant, flow-control and line-stop manufacturers

These companies sell into a non-discretionary repair market and often solve expensive utility shutdown problems. Pentair’s 2025 acquisition of Hydra-Stop for approximately $290 million illustrates demand for specialty valve and line-stop technology.

2. Trenchless rehabilitation and pipe-replacement service companies

Trenchless methods reduce road disruption, labor intensity and downtime. Utilities with aging buried infrastructure are increasingly using pipe bursting, CIPP and other trenchless technologies, especially in dense urban areas.

3. PFAS, advanced filtration and membrane companies

PFAS regulation, semiconductor ultra-pure water demand and reuse are making advanced treatment assets especially attractive. Ecolab’s Ovivo Electronics deal and Veolia’s PFAS expansion are examples of strategic buyers moving aggressively into high-spec water treatment.

4. Smart water/instrumentation/testing businesses

Leak detection, AMI, pressure monitoring, field analytics and PFAS testing solve both labor and regulatory problems. These businesses can carry higher valuations when they include recurring software, monitoring, calibration, consumables or compliance revenue.

5. Regional pump, motor and rotating-equipment service providers

The pump market itself may grow more moderately than digital water, but service companies with installed-base relationships can be very attractive because downtime is costly and municipalities value proven vendors.

6. Stormwater and drainage product manufacturers

Stormwater needs are large, increasingly funded, and tied to climate resilience, flooding, development and regulatory compliance. Manufacturers of engineered drainage, retention, detention, separator and precast products are logical targets for strategics.

5. Valuation Drivers for Lower-Middle-Market Companies

1. Municipal approvals and specifications

Companies specified by municipalities, engineering firms or state procurement frameworks are more valuable than general suppliers. Approved product status can be a barrier to entry.

2. Installed base and aftermarket revenue

A manufacturer with a large installed base of pumps, valves, controls, treatment systems or proprietary parts is more valuable if it generates recurring parts, repair, replacement, calibration or service revenue.

3. Regulatory-driven demand

Revenue tied to lead service line replacement, PFAS treatment, discharge compliance, CSO mitigation, stormwater mandates, consent decrees or industrial pretreatment is generally more defensible than revenue tied only to discretionary capital projects.

4. Technical differentiation

Proprietary designs, patents, certifications, engineered-to-order capability, hard-to-source materials expertise, field performance data, or ability to reduce shutdown time can drive multiple expansion.

5. End-market diversification

A company selling to municipal water, wastewater, industrial users, data centers, semiconductor facilities, food processors and engineering firms is less exposed to any single funding source.

6. Gross margin and pricing power

Buyers will pay more for companies that can pass through material inflation, maintain margin during project delays, and avoid low-bid commodity exposure.

7. Backlog quality

Municipal backlog is valuable when funded, bonded, under contract and not merely “planned.” Buyers will scrutinize bid pipeline versus awarded backlog.

8. Field-service capability

Manufacturers that also provide installation, inspection, repair, commissioning, training or emergency service may receive stronger buyer interest because they control more of the customer relationship.

9. Working capital discipline

Water infrastructure suppliers often face project timing issues, retainage, inventory needs and extended municipal payment cycles. Companies with clean working-capital processes are easier to finance and sell.

10. Compliance and environmental risk management

This is especially important in biosolids, chemicals, PFAS handling, wastewater residuals and industrial discharge services. A strong compliance record supports valuation; unresolved environmental liabilities can sharply reduce value.

6. Why a Manufacturer in This Sector Might Consider Selling Now

1. Buyer demand is strong and structural

Water assets are attractive to strategics, infrastructure investors and private equity because the sector has long-term demand visibility, public funding support, and non-discretionary replacement needs.

2. The market is shifting from deferred maintenance to funded replacement

The IIJA, state revolving funds, lead-pipe mandates, PFAS compliance and utility capital plans are turning long-known infrastructure needs into active projects. That improves the story a seller can tell buyers.

3. Strategic acquirers want capacity and product depth

Large buyers need specialized manufacturers, regional service teams, municipal relationships, installed base, and engineered products. Many would rather acquire capability than build it internally.

4. Regulatory complexity favors scale

Small and mid-sized manufacturers may face increasing requirements around materials, testing, PFAS exposure, compliance documentation, cybersecurity for digital systems, and municipal procurement. A larger partner can help fund growth and compliance.

5. Valuations remain healthy for quality water assets

Public water-sector valuations remain elevated relative to many industrial sectors, and private transaction multiples can be strong when assets have recurring revenue, differentiated technology or mission-critical service exposure.

6. Labor and succession challenges are real

Specialty manufacturing and field-service businesses often depend on long-tenured machinists, welders, engineers, technicians, estimators and project managers. A sale can solve succession and recruiting limitations while preserving the business.

7. EBITDA Multiples and Known Transactions

Water-sector M&A multiples vary widely by business model. Commodity manufacturers, general contractors or project-only fabricators generally trade at lower multiples. Proprietary engineered products, recurring service, compliance testing, smart water, PFAS treatment, and high-spec industrial water assets can trade materially higher.

Date	Target	Buyer	Segment	Disclosed Value / Multiple
2023	Evoqua Water Technologies	Xylem	Mission-critical water treatment solutions and services	Xylem announced an implied enterprise value of about $7.5B. A market commentary cited an implied valuation around 22x FY23E EBITDA.
2025	Ovivo Electronics ultra-pure water business	Ecolab	Ultra-pure water for electronics/semiconductor applications	Ecolab agreed to pay about $1.8B; Ovivo Electronics expected $500M of 2025 sales.
2025	Hydra-Stop LLC	Pentair	Specialty valve and line-stop solutions	Pentair acquired Hydra-Stop for about $290M, or about $240M net of expected tax benefits.
2025	Aris Water Solutions	Western Midstream	Produced-water gathering, disposal and recycling infrastructure	Western Midstream cited an approximate 7.5x 2026 EBITDA multiple including estimated synergies.
2025	Surplus Management assets	Hawkins	Sustainable water treatment solutions	A 2025 water M&A summary reported $204M EV and 20.4x EBITDA.
2025 / 2026	Environmental services sector transactions	Various strategic acquirers	Environmental and water-adjacent services	RL Hulett reported median strategic EV/EBITDA multiples of 20.9x in 2025, up from 15.0x in 2024, for reported environmental services deals.
2025	Public water-sector comparables	Public market	Water infrastructure / engineered solutions / smart tech/utilities	Raymond James’ Water Quarterly cited sector median EV / LTM EBITDA multiples including values around 15.6x, 17.7x, 15.6x, 9.1x, 13.7x, 15.4x, 17.4x, 15.4x and 19.0x across water subsectors.
2025	Fluid handling public companies	Public market	Pumps, flow control, fluid handling	Pumps & Systems cited PitchBook data showing global EV/EBITDA multiples around 9.0x, down from the 2021 peak but near long-term averages.

Practical lower-middle-market multiple guidance

Business Type	Likely Private-Market EBITDA Multiple Range
Commodity fabrication, low differentiation, project-based revenue	4.5x–6.5x
Regional distributor/service provider with municipal customers	5.5x–8.0x
Pump, valve, equipment repair with recurring service and installed base	6.5x–9.0x
Proprietary engineered products with approvals and aftermarket revenue	8.0x–11.0x+
PFAS, advanced treatment, testing, smart water, software-enabled monitoring	9.0x–14.0x+, potentially higher for scale or recurring revenue
Platform-quality water infrastructure services with strong compliance profile	8.0x–12.0x+

 

8. Strategic Takeaway for Lower-Middle-Market Manufacturers

The U.S. water/wastewater market is entering a long replacement cycle. The most compelling acquisition targets will be companies that help utilities and industrial users solve one or more of the following problems: aging buried infrastructure, lead service line replacement, PFAS compliance, wastewater capacity, stormwater resilience, water reuse, leak reduction, energy efficiency, labor shortages, and real-time monitoring.

For a lower-middle-market manufacturer, the best time to explore a sale is often when the company can demonstrate that it is not merely participating in the market, but is positioned in one of the higher-priority funded niches. Buyers will pay the strongest multiples for companies with technical differentiation, municipal approvals, recurring aftermarket demand, defensible margins, and a clear role in the next decade of U.S. water infrastructure repair and replacement.