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Buying a Water and Wastewater Business: The 2026 Buyer’s Playbook

Updated June 2026 · CT Acquisitions

Water and wastewater is one of the most structurally protected verticals in lower-middle-market M&A, and buying a water and wastewater business in 2026 means entering a category where regulated municipal demand, accelerating PFAS and lead-and-copper compliance spend, and the $50B Infrastructure Investment and Jobs Act allocation have created a buyer environment that no other utility-adjacent sector matches. For PE buyers, utility-services strategics, and infrastructure investors, the thesis is straightforward: 5-to-20-year municipal O&M contracts, certified-operator scarcity, and CapEx-driven design-build pull-through generate compounding revenue with regulatory moats that competitors cannot bypass. The difficulty is sourcing operators with clean compliance histories, intact operator certifications, and contract books that hold up under serious diligence.

This guide is the buyer’s playbook for buying a water and wastewater business. It covers how water operators are underwritten in 2026, which operational signals separate a 6x business from an 11x platform, what deal structures sellers accept, and how to close acquisitions that actually compound through the IIJA, LCRR, and PFAS investment cycles.

Why water and wastewater is a structurally protected vertical

Four structural tailwinds make buying a water and wastewater business the highest-conviction infrastructure-adjacent thesis in lower-middle-market M&A right now, and each reinforces the others rather than offsetting them.

First, regulatory mandate. The Safe Drinking Water Act (SDWA) and Clean Water Act (CWA) require continuous compliance with primary drinking water standards and NPDES discharge permits respectively. Municipalities cannot legally stop treating water or discharging compliant effluent. That makes O&M contract revenue effectively non-discretionary in a way that almost no other service vertical can match. When a municipal customer cuts its budget, water O&M is the last line item touched.

Second, certified-operator scarcity. Every plant, regardless of ownership, requires licensed operators. The grading systems vary by state (Class A through D in most jurisdictions, with Class A serving the largest systems), but the workforce is aging and the credentialing pipeline is constrained. The American Water Works Association has flagged operator shortages in multiple regional studies, and contract operations firms with deep certified rosters command material premiums because their labor is not easily replicated.

Third, the IIJA $50B tailwind. The Infrastructure Investment and Jobs Act allocated approximately $50 billion to water infrastructure, including $15 billion specifically for lead service line replacement and additional funds for PFAS, emerging contaminants, and resilience. The State Revolving Funds (Drinking Water SRF and Clean Water SRF) are the primary distribution channel, and the multi-year program creates pull-through demand for design-build, O&M, and capital-project services through at least 2028.

Fourth, fragmentation. There are roughly 50,000 community water systems and 16,000 publicly-owned treatment works in the US, plus tens of thousands of small private and HOA-owned systems. Inframark, Veolia, American Water, and Essential Utilities are actively consolidating, but the top operators still represent a single-digit share of the long tail of small municipal and private systems. For acquirers willing to build through small bolt-ons, the runway is years long.

For buyers, the combination is rare: a category with regulatory non-discretion, federally-funded CapEx tailwind, a structural labor moat, and enough supply of quality targets to support a multi-year build. The challenge is that the best operators know this, and pricing has firmed.

What buyers are paying for water businesses in 2026

Valuation ranges in water and wastewater are wider than most service categories because the spread in revenue quality is wider. A $3M EBITDA business with 80% one-year municipal contracts, a single Class A operator, and no industrial diversification is a fundamentally different asset than a $3M EBITDA business with a portfolio of 15-year O&M contracts, four Class A operators, design-build capability, and an industrial process water book. The multiples reflect the difference.

The spread between 6x and 12x is not random. It can be explained by seven factors, and every sophisticated water and wastewater buyer in the market models these explicitly:

• Contract duration and escalators. 5 to 20 year terms with documented CPI or fixed annual escalators support platform multiples. Year-to-year contracts are treated like project work.
• Renewal track record. Above 85% recompete win rate is platform-grade. Below 70% suggests pricing or service problems and triggers a 1.0x to 2.0x multiple discount.
• Certified operator depth. Multiple Class A operators across regional offices reduces key-person risk. Single-operator dependency is a meaningful discount.
• Municipal versus industrial mix. A blend of municipal (stable, regulated) and industrial process water (higher-margin, faster repricing) is more valuable than either alone.
• Design-build capability. Operators that can perform capital projects (lift station rehabilitation, MBR installation, PFAS treatment) capture IIJA-funded work that pure O&M operators must subcontract.
• Compliance history. A clean record under SDWA, CWA, and state programs is table stakes. Recent NOVs, consent orders, or operator licensing actions can erase 20% to 30% of the headline value.
• Geographic footprint. Operators clustered in IIJA-priority states (with active LCRR enforcement and PFAS MCL adoption) get a premium because CapEx pull-through is more visible.

The 2026 pricing reality

Because PE-backed platforms and strategic utilities are aggressively competing for quality contract O&M operators, pricing has compressed upward. Platform-grade businesses in the $5M to $15M EBITDA range routinely receive multiple LOIs at 9x to 11x. Sellers are getting sophisticated. Generational owners, ESOPs, and engineering-firm spinouts are running structured processes with infrastructure-experienced bankers, and they are getting institutional pricing.

For independent and search-fund buyers competing with PE-backed strategics, the implication is that you either need a differentiated thesis (small private systems, HOA water utilities, industrial process water specialists the strategics overlook) or you need to move to the sub-$3M EBITDA band where strategic buyers are less active. In that range, valuations are still 5x to 7x SDE and sellers often prioritize continuity of certified operator employment and municipal-customer relationships.

The six buyer archetypes in water and wastewater

Understanding which buyer you are, and which you are competing against, changes how you structure offers.

1. PE-backed contract operations platforms

Inframark (owned by Highview Capital since the 2020 carve-out from Severn Trent Services) is the clearest example: a national platform acquiring regional O&M operators and small private utilities across municipal and industrial water. Pay highest multiples for $5M+ EBITDA operators with clean compliance and design-build capability. Move fast and write 65% to 75% of purchase price at close.

2. Strategic global utilities

Veolia (which closed its $13B acquisition of SUEZ in January 2022 and continues integrating the combined business) and Severn Trent Services are active strategic acquirers. They pay competitive multiples for targets that complete a geographic or technology gap. Integration tends to be slower because of corporate diligence requirements but is generally well-resourced.

3. Regulated utility consolidators

American Water Works (NYSE: AWK, market capitalization roughly $26B) and Essential Utilities (NYSE: WTRG, parent of Aqua America) acquire small municipal and private water systems primarily under state regulatory mechanisms (Fair Market Value statutes in PA, NJ, IL, IN, MO, OH, and others). They pay rate-base-driven multiples that often exceed strict EBITDA valuations because the long-term recovery profile justifies it. Target profile is municipal water system asset purchases, not O&M contracts.

4. CSWR and small-system specialists

Central States Water Resources (backed by SkyKnight Capital, with a March 2024 recapitalization including Goldman Sachs Alternatives) specifically targets small distressed and underperforming community water and wastewater systems, primarily in the Midwest and South. The thesis is bringing professional management and capital to systems too small for AWK or Essential. CSWR has acquired over 200 small systems and continues actively buying.

5. Engineering and design-build strategics

CDM Smith and Black & Veatch (both privately held) selectively acquire O&M operators that complement their core consulting and design-build practices. They are less price-competitive than PE platforms but offer continuity for engineering-led founders. Long hold horizons and minimal management changes are typical.

6. Family offices and infrastructure funds

Long-hold capital from family offices and core infrastructure funds (such as IFM Investors, Brookfield, and regional infrastructure managers) targets larger contract O&M platforms ($15M+ EBITDA) and small regulated utilities. Pricing is similar to PE platforms but with multi-decade hold horizons and less pressure to flip. Attractive to sellers prioritizing operator employment continuity and community-relationship preservation.

Due diligence: the water-specific deep dive

Generic M&A diligence is necessary but not sufficient for water and wastewater. The category-specific signals are where value creation and destruction actually happen when buying a water and wastewater business. Here is what experienced water buyers do in addition to standard quality of earnings, legal, and insurance review.

Contract book decomposition

Do not accept the seller’s summary of the contract portfolio. Pull every active O&M contract and tabulate: customer name, contract type (municipal O&M, industrial process, design-build, capital project), original effective date, current term end, renewal mechanism (automatic, RFP recompete, negotiated), annual revenue, EBITDA margin, escalator structure, and termination-for-convenience clauses. A healthy water contract book shows weighted-average remaining term above seven years, more than 85% historical recompete win rate, and CPI or fixed annual escalators on more than 70% of contracts.

Certified operator inventory

Build an operator-level roster covering every licensed individual: state of licensure, license class (A, B, C, D, or state-specific equivalent), expiration date, continuing-education status, current plant assignment, total years of experience, and tenure with the target. Cross-reference against contract requirements (every contract specifies minimum operator credentials). Identify any contracts where the named operator-in-responsible-charge is approaching retirement, has resigned, or is double-counted across multiple plants. Operator gaps trigger contract termination clauses that buyers must underwrite directly.

Compliance file review

Pull the last 60 months of state primacy agency files and EPA ECHO records for every plant the target operates. Tabulate every Notice of Violation, Administrative Order, Consent Order, and Significant Noncompliance designation. A clean record (zero significant violations over five years) supports platform pricing. Recurring SNC designations or open consent orders typically reduce multiples by 1.5x to 2.5x and require seller-funded remediation escrows.

Capital project pipeline

For operators with design-build capability, build a project-by-project backlog: customer, scope, contract value, percent complete, budgeted gross margin, change-order exposure, and bond or surety status. PFAS treatment, LCRR service-line replacement, and SRF-funded lift station work typically run $20M to $40M per mid-size plant. Buyers should adjust EBITDA for the timing differences between cash receipts and revenue recognition.

Equipment and asset condition

For contract operators, the municipal customer typically owns the plant, while the operator owns the mobile fleet (vac trucks, jet trucks, portable generators, lab equipment). For regulated-utility asset purchases, perform a full asset condition assessment: pipe-network leakage, treatment plant residual life, lift station condition, SCADA system age. Replacement CapEx requirements are often understated by 30% to 50% in seller projections.

Customer concentration stress test

Pull the top 10 customers by revenue and trailing 12 month gross profit. For each, identify the contract term remaining, recompete trigger, relationship owner, and local political dynamics (council changes, manager turnover, recent rate disputes) that could affect renewal. Model scenarios where the top three customers do not renew. A platform-grade operator can absorb the loss; a $3M EBITDA business often cannot.

Regulatory diligence: SDWA, CWA, LCRR, and PFAS

Water and wastewater is the most regulated service vertical in the US economy after healthcare and nuclear, and the recent rule changes materially affect deal economics. Sophisticated buyers run a parallel regulatory diligence workstream covering four areas.

Safe Drinking Water Act (SDWA) compliance

For every public water system the target operates, pull the last five years of monitoring data through the state primacy agency. Confirm compliance with primary MCLs (microbiological, disinfection byproducts, lead and copper, nitrates, arsenic, radionuclides) and confirm that any treatment technique requirements (corrosion control, disinfection) are documented and current. Tier 1, 2, and 3 public notifications issued in the trailing 60 months are red flags.

Clean Water Act (CWA) and NPDES discharge permits

For every wastewater plant the target operates, pull the NPDES permit, the most recent permit reissuance correspondence, and the discharge monitoring reports for the last 60 months. Identify chronic effluent violations, particularly for nutrients (nitrogen, phosphorus), BOD, TSS, and emerging concerns (PFAS surrogate parameters in states that have begun monitoring). Operators with chronic NPDES violations face EPA SNC designation and consent order exposure that buyers must underwrite.

Lead and Copper Rule Revisions (LCRR final rule October 2024)

The LCRR final rule, issued by EPA in October 2024, requires every community water system to complete a service line inventory (with public access) and implement a 10-year mandatory full lead service line replacement program. For contract O&M operators, this creates significant revenue opportunity (inventory development, replacement program management, on-site customer-side work) but also creates exposure where municipal customers underfund their LCRR programs. Buyers should diligence the LCRR posture of every municipal customer.

PFAS treatment and the 2024 MCL

EPA finalized National Primary Drinking Water Regulations for six PFAS compounds in April 2024, with MCLs of 4.0 ng/L for PFOA and PFOS and a Hazard Index for four others. Compliance is required by 2029. The estimated treatment-capital impact is approximately $20M to $40M per mid-size plant (depending on technology selection: granular activated carbon, ion exchange, or reverse osmosis). For operators with design-build capability and PFAS specialization (such as Pure Aqua and similar specialty firms), this is a multi-year tailwind. For operators without it, customers will source PFAS work externally and shrink the addressable contract scope.

State-by-state operator licensing

Operator licensing is administered at the state level through the primacy agency. The Association of Boards of Certification (ABC) provides standardized exam materials, but reciprocity is partial. A target operating across multiple states needs sufficient certified operators in each, across Drinking Water Treatment, Distribution, Wastewater Treatment, and Wastewater Collection (Class A through D). Some states (CA, TX, NC) use unique grading systems that do not perfectly map to other states.

Structuring the offer

The best buyers win on structure as often as on price. A well-structured offer can beat a higher nominal offer when it matches what the seller actually cares about, particularly in water where founders frequently prioritize operator employment continuity and municipal-relationship preservation alongside price.

The standard water deal structure (2026)

• Cash at close: 65% to 75% of total consideration. Platform deals lean toward the high end; smaller deals with seller transition obligations sit closer to 65%.
• Seller rollover equity: 5% to 15% in platform deals where the founder or operating team continues. Common in PE platform transactions; rare in regulated utility asset acquisitions.
• Earnout: 10% to 20% over 18 to 36 months, typically tied to contract renewals, new contract wins, and operator retention rather than EBITDA.
• Escrow: 10% to 15% held 18 to 24 months against compliance representations and undisclosed environmental liabilities. R&W insurance is common in deals above $30M.
• Seller note: 0% to 10%, typically subordinated. More common in search fund and independent sponsor deals than in strategic acquisitions.

Where smart buyers differentiate

The offer components water sellers weight most heavily, in order, are operator employment guarantees (multi-year continuation for named certified operators), municipal-customer relationship continuity commitments, cash at close percentage, earnout achievability, and timeline certainty. Headline price is often the fourth or fifth factor.

Buyers who win on non-price factors typically pre-commit to retention bonuses for named operators (commonly 15% to 25% of annual compensation over 18 to 24 months), write earnouts with achievable contract-renewal floors (85% renewal rate triggers a minimum payment with upside for overperformance), and minimize escrow exposure through representations and warranties insurance.

The earnout trap

The most destructive element of a water and wastewater deal is a poorly designed earnout. Earnouts tied to consolidated EBITDA invite disputes about post-close cost allocation across the buyer’s broader platform. Earnouts tied to top-line revenue can motivate sellers to accept loss-leader new contracts that destroy margin.

The structures that work in water are contract renewal rate (measured against a baseline), new contract wins meeting a defined margin threshold, operator retention rate for a named roster, and clean compliance maintenance (zero new significant violations during the earnout period). All four are within the seller’s influence for 18 to 36 months post-close.

Integration: where water acquirers create or destroy value

PE firms and strategic utilities publicly cite their integration playbooks, but the reality is more variable than the decks suggest. The water and wastewater deals that compound are the ones where buyers respect three principles.

Protect the operator roster in the first 180 days

Certified operators are the single most replaceable-but-not-easily-replaced resource in the business. Competing operators reach out within days of a deal announcement. Smart buyers structure retention bonuses (typically 15% to 25% of annual compensation paid in 18 to 24 months) for every Class A and Class B operator named in customer contracts, with the bonus contingent on continued employment. This should be finalized before close, not after, and communicated personally by the buyer’s integration lead within the first week post-close.

Do not push price increases in year one

Municipal contract pricing is governed by procurement law and political dynamics that have nothing to do with market rates. Buyers who push aggressive price increases at first renewal often lose the contract to a competitor willing to hold the line for a cycle. The correct approach is to use the IIJA, LCRR, and PFAS scope expansions to grow contract value through added services rather than pressing on unit pricing during the first renewal cycle.

Preserve the local-relationship architecture

Water O&M is a small-town business even in major metros. The operator-in-responsible-charge often knows the city manager, the public works director, and the council members personally. Buyers who replace local management with corporate accounts teams in the first six months frequently lose recompetes 18 to 24 months later. The better practice is to document the existing relationship architecture, identify the key contacts on each contract, and invest in continuity rather than centralization.

Financing a water and wastewater acquisition

Capital structure varies by buyer type, but some patterns are consistent in 2026.

SBA 7(a) loans

Independent buyers and search funders use SBA 7(a) financing for water O&M deals up to $5M in purchase price. SBA rates run prime plus 2.0% to 2.75% with 10-year amortization. The constraint: SBA requires the seller to exit operationally within 12 months and limits seller financing structures. For water deals where the founder is also the senior certified operator, SBA financing is often a poor fit because the operator transition realistically takes 24 to 36 months.

Commercial bank acquisition lending

Regional and community banks with utility-services experience will lend 2.5x to 4.0x EBITDA at prime plus 1.5% to 2.5% for established water operators with documented contract books. Cash flow covenants are typical. Best for asset-light contract O&M businesses with predictable margins.

Mezzanine and unitranche

For platform deals or larger independent transactions ($5M+ EBITDA), mezzanine or unitranche financing bridges the gap between senior debt and equity. Rates run 10% to 14% with warrants. Common providers include Twin Brook, Monroe, Antares, regional SBIC funds, and infrastructure-focused private credit managers.

State Revolving Fund (SRF) and project finance

For deals that include capital project pipeline (PFAS, LCRR, lift station rehabilitation), buyers should understand the SRF financing the customer is using. SRF loans are typically priced at 1% to 2% below market rates and have 20 to 30 year terms. They do not affect the acquisition financing directly but materially affect the customer’s willingness to fund expanded scope under the existing O&M contract.

Seller financing

Often 5% to 15% of purchase price, subordinated, five to seven year term. Rates typically 6% to 8%. Useful for buyers who want to preserve cash and sellers who want a continuing economic stake during the operator transition period.

Red flags that kill water deals

Some deals should not close. The patterns that consistently predict post-close failure when buying a water and wastewater business:

• Open consent order or active SNC designation. An unresolved EPA or state primacy agency enforcement action transfers to the buyer at close. Sophisticated buyers walk away unless the seller funds remediation through escrow, and even then the diligence premium often makes the deal uneconomic.
• Single Class A operator dependency. If one individual holds the responsible-charge license on contracts representing 50% or more of revenue, and that individual is approaching retirement or has not committed to a multi-year post-close role, the contract book is fragile.
• Concentrated customer base with imminent recompetes. If the top three customers represent more than 60% of revenue and any are within 12 months of contract recompete, the buyer is underwriting a coin flip rather than a business.
• Quality of earnings reveals more than 15% EBITDA adjustment. Usually from owner compensation, related-party transactions, or aggressive percent-of-completion accounting on long-duration design-build contracts. A 10% to 15% adjustment is normal. Above that range, the diligence premium typically makes the deal uneconomic.
• PFAS exposure without treatment capability. Operators whose municipal customers have detected PFAS above the 2024 MCLs and who lack design-build capability face shrinking addressable scope as customers source treatment externally.
• Pension or post-retirement medical liability. Operators that acquired municipal employees through past O&M transitions often carry pension or OPEB liabilities that are understated on the balance sheet and can wipe out years of EBITDA.

The CT Acquisitions perspective

We work both sides of the water and wastewater market: introducing sellers to qualified buyers and sourcing deal flow for institutional buyer networks that have engaged us. Our observations from the last 36 months of water M&A:

• The best deals are not always the highest-priced. Water sellers consistently prioritize operator employment guarantees and municipal-customer relationship continuity. Buyers who can credibly signal these commitments win deals that higher bidders lose. Inframark, CSWR, and the major strategics have all walked away from auctions where the seller chose a slightly lower-priced buyer offering better operator continuity terms.
• The regulated utility asset purchase market is structurally different. When American Water or Essential acquire a small municipal system under a Fair Market Value statute, the pricing mechanism is rate-base-driven rather than EBITDA-driven. This often produces purchase prices that look high on multiples but are reasonable on long-term recovery economics. Independent buyers competing against regulated utilities for the same asset usually cannot match the rate-base math.
• PFAS and LCRR are real tailwinds for design-build-capable operators. The acquirers who have built or bought design-build capability in the last 24 months are seeing 15% to 25% organic revenue growth from PFAS and LCRR scope expansion within existing O&M contracts. Pure-O&M operators are watching that work flow to consulting engineers and specialty contractors instead.
• Regulatory diligence quality predicts post-close outcomes. The integration failures we have seen are almost always traceable to compliance issues that diligence either missed or underweighted. Buyers who staff regulatory diligence with experienced state-primacy-agency veterans (not just environmental attorneys) consistently catch issues that legal-only diligence misses.

If you’re a buyer, here’s what we recommend

Whether you are a first-time search fund buyer, an independent sponsor building an infrastructure-services thesis, or a strategic utility looking for bolt-on geographic coverage, the same playbook works for buying a water and wastewater business:

1. Write down your thesis in one page. Geographic scope, customer mix (municipal versus industrial), service mix (O&M versus design-build versus asset ownership), size band, certified-operator strategy, hold period. Every target you evaluate should be defensible against this thesis.
2. Build a regulatory diligence capability before you need it. Identify state-primacy-agency veterans, EPA ECHO data specialists, and water-experienced environmental counsel before you sign your first LOI. The quality of regulatory diligence is the single largest determinant of post-close outcomes in this category.
3. Underwrite from the operator roster up. The best water businesses are built on certified-operator depth. Your diligence should reach into the operator pool. Your integration plan should start with operator retention bonuses finalized at close, not after.
4. Do not mistake price for deal quality. Buyers who pay 10x for a platform-grade water business with 15-year contracts, design-build capability, and a deep operator roster typically return capital more reliably than buyers who pay 6x for a single-operator-dependent business with short-term contracts that looks cheap on paper.

Working with CT Acquisitions as a buyer

We maintain a qualified buyer network of PE platforms, strategic utilities, regulated consolidators, infrastructure funds, independent sponsors, and search funds. If your thesis fits the water and wastewater deal flow we see, we are direct, fast, and selective about introductions. We do not run broad auction processes. We match founders to the small number of buyers who fit their specific business, particularly important in water where operator continuity and municipal relationships matter as much as price.

If you are actively acquiring in water and wastewater, set up a 30-minute conversation. We can introduce you to qualified sellers when alignment is there. Our water and wastewater valuation guide covers seller-side math, environmental services covers the adjacent landscape, and the buy-a-business directory covers other active verticals.

Frequently asked questions about buying a water and wastewater business

What EBITDA multiple should I pay for a water and wastewater business in 2026?

For platform-grade water and wastewater businesses with 10+ year municipal O&M contracts, deep certified-operator rosters, design-build capability, and clean compliance histories, expect competitive bidding in the 9x to 12x EBITDA range. Smaller contract O&M operators with 5-year terms and modest operator depth typically transact at 7x to 8.5x. The factors that move multiples most are weighted-average contract duration, recompete win rate, and certified-operator depth across multiple license classes.

How long does it take to close a water and wastewater acquisition?

90 to 150 days from signed LOI to close, longer than most service categories because of regulatory diligence (SDWA monitoring data, NPDES permit review, operator license verification across multiple states). Regulated utility asset purchases under state Fair Market Value statutes can take 9 to 18 months because of utility commission approval requirements.

Should I use an SBA loan to buy a water and wastewater business?

SBA 7(a) works for independent buyers acquiring small contract O&M operators up to $5M, but it is a poor fit for many water deals because SBA requires the seller to exit operationally within 12 months. The founder is often the senior certified operator on multiple contracts and a clean 12-month exit is rarely realistic. Commercial bank financing with seller notes or rollover equity is usually more workable.

How do I source water and wastewater deal flow if I am new to the category?

Direct outreach to operators identified through state primacy agency databases and EPA SDWIS records; relationships with utility-services CPAs and M&A attorneys; presence at AWWA ACE, WEFTEC, and state water-wastewater association conferences; M&A advisors who specialize in water and infrastructure services (CT Acquisitions among them); and broker-listed deals.

What is the biggest mistake first-time water buyers make?

Underestimating the certified-operator constraint. First-time buyers often focus on the financial deal and discover post-close that they did not secure the Class A operators who hold responsible-charge designations on customer contracts. Retention bonuses, multi-year employment commitments, and clear career paths are essential and should be finalized before close.

How does the IIJA $50B water infrastructure tailwind affect acquisitions?

The IIJA allocated approximately $50 billion to water infrastructure through State Revolving Funds, with $15 billion specifically for lead service line replacement. For operators with design-build capability, this is a multi-year revenue tailwind priced into platform multiples. Pure-O&M operators face addressable-scope risk because customers will source LCRR and PFAS treatment work externally.

How much working capital do I need to close a water and wastewater deal?

For a $5M EBITDA contract O&M operator, expect to fund 10% to 15% of revenue in working capital at close (receivables, materials, contract retention). That is typically $1.5M to $3M on top of the purchase price. For deals with design-build backlog, add another 5% to 10% of backlog value for work-in-progress.

Related resources for buyers

• Selling a water and wastewater business: seller-side perspective on what founders are being told
• Water and wastewater business valuation guide: multiples, comps, and methodology
• Buying an environmental services business: adjacent vertical with similar regulatory dynamics
• Full buy-a-business directory: other active acquisition verticals
• How to sell a service business: useful context for buyer-seller conversations