American cities are losing ground on their water and sewer networks faster than they can act. Against that backdrop, SewerAI, a California-based AI platform for underground infrastructure management, has secured a major growth equity investment led by JMI Equity, with continued participation from existing backers Innovius Capital, Epic Ventures, and Bentley Systems. Financial terms were not disclosed. The round marks SewerAI’s first institutional raise since its $15 million Series B in 2024, which Innovius Capital also led.
A Deteriorating Baseline Drives Urgency
The timing reflects worsening conditions on the ground. According to the National League of Cities’ 2026 Municipal Infrastructure Conditions Report, water and sewer assets have seen the steepest decline in condition of any major infrastructure category since 2022, even as local governments continue to rank them among their top capital priorities.
The gap between what cities need to do and what they can do has widened as inspections remained slow, manual, and costly. Labour shortages compound the problem: there are fewer trained field inspectors available even as the volume of ageing pipe grows.
What SewerAI Does and How Far It Has Scaled
Founded in Walnut Creek, California, SewerAI combines AI, cloud infrastructure, and domain expertise in wastewater systems to convert raw inspection footage and field data into condition assessments, rehabilitation plans, and asset management strategies.
According to the company, its AutoCode AI engine has processed more than 850,000 NASSCO condition surveys, the standard coding framework for pipe defect classification in North America. The PIONEER platform underpins field data capture and project collaboration, while newer tools including Risk & Rehab and Smart Project Builder extend AI into capital project prioritisation and programme planning.
Collectively, the platform now covers data from more than 2,000 cities and manages over 30,000 miles of pipe. The company reports tripling its customer base over the past two years, processing millions of feet of underground infrastructure data each month.
Municipal Customers and Engineering Partnerships
The platform serves some of the largest sewer programmes in the United States. The City of Houston, widely cited as the largest municipal sewer collection system in the country, uses SewerAI to manage inspection and reporting tied to its obligations under a federal consent decree with the Environmental Protection Agency. The City of Phoenix and KC Water are also listed among active customers, alongside engineering firms HDR and PURIS.
Patrick R. Womack II, programme manager for the SDSSR programme at the City of Phoenix Water Services Department, described the operational shift in the company’s press release: “SewerAI helps us inspect, prioritise, and report at a scale that wasn’t possible before. Just as importantly, it puts our data in one place, making it easier to thoroughly explain inspections and make projections for future capital improvements.”
JMI Equity and the Investment Thesis
JMI Equity, a growth equity firm founded in 1992 and headquartered across offices in San Diego, Washington DC, and Baltimore, has a long track record in software and AI-driven businesses. Its portfolio spans close to 200 companies and, as of December 2025, represents more than $11 billion in combined revenue and $90 billion in aggregate enterprise value.
Chase Thomet, Partner at JMI Equity, attributed the investment to converging structural pressures on US utilities: “SewerAI sits at the intersection of several powerful tailwinds: aging pipeline infrastructure, labour constraints, and the rapid adoption of AI-powered automation,” Thomet said in SewerAI’s June 2026 press release. “The company has demonstrated exceptional product-market fit, a rapidly expanding customer base, and a clear vision for transforming how critical infrastructure is managed.”
Shea & Company served as SewerAI’s exclusive financial adviser on the transaction.
Platform Direction and Integration Roadmap
With new capital in place, SewerAI is pushing the scope of its AI capabilities beyond inspection coding into rehabilitation planning and programme management. Near-term priorities include improving throughput and accuracy in AutoCode, broadening Risk & Rehab functionality for manhole condition assessment and capital project ranking, and deepening integrations with Esri ArcGIS, Trimble, and OpenGov.
The company is also developing workflows designed to help utilities meet consent-decree compliance and regulatory reporting requirements more efficiently, a priority for cities operating under federal oversight orders.
Market Position and the Competitive Landscape
SewerAI competes in a fragmented market that has historically been dominated by specialised inspection hardware providers and standalone data management software. Rivals such as RedZone Robotics and Headlight AI address similar problems through robotics and 3D mapping respectively, but SewerAI’s positioning is as an end-to-end operating platform, integrating condition coding, risk scoring, quality assurance, digital submittals, and project development into a single connected system.
The JMI investment signals growing private equity conviction that AI applied to civil infrastructure data is approaching the scale and reliability needed to attract institutional capital, not just venture funding. Interest in AI-powered inspection has also extended into adjacent networks: Arkion raised $4 million in late 2024 to apply similar AI-based condition assessment to overhead power line infrastructure, as Kurrant reported at the time.
