STOCK TITAN

Water Stocks: Utilities, Treatment & Infrastructure

Discover 40 companies in the water sector
Combined Market Cap $421.28 B
Companies 40
1-Year Change -7.66%
Avg. Affinity 4.2/5

About This List

This page tracks 40 stocks classified under the Water investment theme on StockTitan.

How Do We Pick the Stocks on This List?

Every company on this page earned its place through documented evidence, not press-release volume. The list is re-evaluated on a recurring basis against primary sources, including 10-K and 10-Q filings, earnings press releases, and company disclosures, to confirm what each business actually does in water today.

  • Evidence over announcements: a company is added only when its water role is verifiable, either disclosed water revenue or a documented position in the water supply chain. Marketing language alone never qualifies.
  • A water-washing screen: we scan press releases across the whole market, and companies that publish heavy water language while reporting no water revenue are excluded. This is what keeps the small-cap end of the list honest.
  • A transparent relevance score: each company carries an affinity score from 5 (water is the core of the business or the company is a defining leader of the sector) down to 2 (peripheral exposure), so pure plays and diversified companies are never presented as equivalent.
  • Active pruning: companies leave the list when the case weakens, for example financial distress, a going-private transaction, or a divested water business.
Sort Order Relevance + Market Cap
Prices Updated Sep 15, 2026
Review Quarterly
Type Data-Driven List
Theme relevance score: 5 core / pure-play 4 major 3 meaningful 2 peripheral 1 limited exposure

This is a data-driven stock list, not a ranking or investment recommendation. Inclusion does not imply endorsement.

Water stocks

1-Year Combined Market Cap

Total market capitalization of all Water stocks

1Y Change -7.66%

Sector Leaders

1
Price $274.60
Change -0.33%
Market Cap: $77.23 B (18.33% of sector)

Why It's Relevant

Affinity
5/5

Ecolab provides water treatment chemistry, equipment, and monitoring programs that help industrial and commercial customers reduce, reuse, and treat water in cooling, boiler, and process systems. Water is its largest reportable segment. It serves high technology customers including data centers and microelectronics plants alongside food, manufacturing, and heavy industry.

2
Price $138.02
Change -0.65%
Market Cap: $27.61 B (6.55% of sector)

Why It's Relevant

Affinity
5/5

American Water Works is the largest publicly traded water and wastewater utility in the United States, providing regulated drinking water and sewage services to millions of people across roughly fourteen states. It owns treatment plants, pipes, and pumping stations, and earns rates approved by state regulators.

3
Price $107.50
Change +0.01%
Market Cap: $25.10 B (5.96% of sector)

Why It's Relevant

Affinity
5/5

Xylem is a water technology company that makes pumps, treatment systems, smart water meters, leak detection tools, and analytics software used by utilities and industrial customers to move, treat, test, and manage water and wastewater. Treatment systems and services form a substantial part of the business alongside its transport and measurement products.

All Water Stocks (37 more)

Price $95.48
Change -0.84%
Market Cap: $23.48 B (5.57% of sector)

Why It's Relevant

Affinity
5/5

Veralto operates a Water Quality segment whose Hach, Trojan Technologies, and ChemTreat brands supply instruments, chemistry, and ultraviolet disinfection systems used to test and treat drinking water, wastewater, and industrial process water. Water Quality is one of the two reportable segments the company operates, and the other covers product identification and packaging.

Price $350.47
Change -0.41%
Market Cap: $11.75 B (2.79% of sector)

Why It's Relevant

Affinity
5/5

Watts Water Technologies manufactures valves, backflow preventers, drainage products, water heating and flow controls, and treatment and reuse systems used in plumbing, heating, and water quality applications. Its products protect water safety and manage flow across residential, commercial, and municipal buildings, making it a focused water and flow control equipment maker.

Price $56.58
Change +0.71%
Market Cap: $8.97 B (2.13% of sector)

Why It's Relevant

Affinity
5/5

Pentair is a water solutions company that makes pumps, filtration systems, pool equipment, and residential and commercial water treatment products. Its portfolio spans water filtration, softening, and movement for homes, businesses, pools, and industrial users, positioning the company as a focused supplier of water management hardware across multiple end markets.

Price $46.18
Change +0.20%
Market Cap: $7.64 B (1.81% of sector)

Why It's Relevant

Affinity
5/5

Zurn Elkay Water Solutions is a pure-play water management company that makes drinking water products such as filtered bottle-filling stations and fountains, plus valves, drainage, backflow prevention, and flow systems for commercial and institutional buildings. Its product set spans water safety, control, conservation, and delivery within the water equipment segment.

Price $41.08
Change +0.66%
Market Cap: $7.53 B (1.79% of sector)

Why It's Relevant

Affinity
5/5

Core & Main is a leading distributor of water, wastewater, storm drainage, and fire protection products in the United States, supplying pipes, valves, fittings, meters, hydrants, and related materials to municipalities and contractors. Its business is centered on distributing the components used to build and maintain water and wastewater infrastructure.

Price $95.95
Change -0.15%
Market Cap: $4.25 B (1.01% of sector)

Why It's Relevant

Affinity
5/5

Franklin Electric designs and manufactures water and fuel pumping systems, including submersible motors, pumps, drives, and controls used to move groundwater for residential, agricultural, and municipal supply, plus filtration and treatment equipment. Water pumping and systems make up the majority of its business, positioning it as a focused water movement supplier.

Price $126.11
Change -0.87%
Market Cap: $3.69 B (0.88% of sector)

Why It's Relevant

Affinity
5/5

Badger Meter makes smart water meters, flow measurement instruments, and the cellular and software systems that read them, helping utilities measure consumption, detect leaks, and manage water networks. Water metering and the related data and analytics are the core of the company, positioning it as a focused water measurement provider.

Price $22.81
Change -1.17%
Market Cap: $3.60 B (0.86% of sector)

Why It's Relevant

Affinity
5/5

Mueller Water Products makes fire hydrants, valves, pipe fittings, and metering and leak-detection technology used by municipal water systems to distribute and manage drinking water. Its infrastructure products and smart metering tools are installed throughout water distribution networks, making it a focused supplier of water infrastructure and metering hardware.

Price $86.45
Change -0.77%
Market Cap: $3.45 B (0.82% of sector)

Why It's Relevant

Affinity
5/5

American States Water provides regulated drinking water service to customers in California through its Golden State Water subsidiary, operates a small regulated electric utility, and supplies water and wastewater services on United States military bases through long-term government contracts. Regulated water is the central activity, supplemented by contracted utility operations.

Price $47.82
Change -0.85%
Market Cap: $2.98 B (0.71% of sector)

Why It's Relevant

Affinity
5/5

California Water Service Group is a regulated water utility holding company that delivers drinking water and provides wastewater service to communities, primarily in California, with additional operations in Washington, New Mexico, Hawaii, and Texas. It owns wells, treatment facilities, and distribution mains, and recovers approved costs through regulated rates.

Price $62.47
Change +0.14%
Market Cap: $2.61 B (0.62% of sector)

Why It's Relevant

Affinity
5/5

H2O America, formerly SJW Group, is a regulated water and wastewater utility that provides water service to customers in California, Texas, Connecticut, and Maine. It owns and operates water-supply, treatment, and distribution infrastructure and invests in pipe and system upgrades across its regulated service territories.

Price $55.96
Change -0.96%
Market Cap: $1.06 B (0.25% of sector)

Why It's Relevant

Affinity
5/5

Middlesex Water is a regulated water utility that collects, treats, and distributes drinking water and provides wastewater services to customers in New Jersey and Delaware. It owns treatment plants and distribution systems and earns revenue from regulated rates, making it a small pure-play regional water and wastewater provider.

Price $32.87
Change -0.57%
Market Cap: $536.52 M (0.13% of sector)

Why It's Relevant

Affinity
5/5

The York Water Company is the oldest investor-owned water utility in the United States, supplying drinking water and wastewater service to customers in south-central Pennsylvania. It impounds, purifies, and distributes water through company-owned reservoirs, treatment plants, and mains, operating entirely as a regulated water and wastewater utility.

Price $28.15
Change +0.43%
Market Cap: $448.84 M (0.11% of sector)

Why It's Relevant

Affinity
5/5

Consolidated Water designs, builds, and operates desalination plants and water-treatment infrastructure, and supplies drinking water to utilities, developers, and government customers, primarily in the Caribbean and the United States. It also manufactures water-treatment products and provides engineering services for water-supply projects.

Price $35.22
Change -0.31%
Market Cap: $364.86 M (0.09% of sector)

Why It's Relevant

Affinity
5/5

Artesian Resources is a regulated utility holding company that supplies drinking water and provides wastewater service primarily in Delaware, with additional operations in Maryland and Pennsylvania. Through its Artesian Water subsidiaries it owns wells, treatment plants, and distribution systems, operating as a small regional pure-play water and wastewater utility.

Price $8.69
Change 0.00%
Market Cap: $250.23 M (0.06% of sector)

Why It's Relevant

Affinity
5/5

Global Water Resources is a regulated water resource management company operating water, wastewater, and recycled water utilities serving growing communities in the Phoenix metropolitan area of Arizona. Its model emphasizes treating and recycling water for reuse, and it earns regulated rates for water and wastewater service in a water-scarce region.

Price $5.24
Change +0.38%
Market Cap: $18.36 B (4.36% of sector)

Why It's Relevant

Affinity
4/5

SABESP is a Brazilian water and sanitation utility that provides drinking water collection, treatment, and distribution plus sewage services across the state of Sao Paulo. Its shares trade in the United States as an NYSE-listed American Depositary Receipt, carrying non-US regulatory, currency, and political exposure for holders.

Price $127.21
Change +1.50%
Market Cap: $9.45 B (2.24% of sector)

Why It's Relevant

Affinity
4/5

Advanced Drainage Systems manufactures pipe, drainage, and water-management products used for stormwater and onsite wastewater systems. Its high-density polyethylene pipe, retention systems, and septic products serve construction, infrastructure, and agricultural markets, making it a maker of physical water-management and drainage infrastructure.

Price $36.72
Change +0.03%
Market Cap: $9.40 B (2.23% of sector)

Why It's Relevant

Affinity
4/5

Tetra Tech is a consulting and engineering firm with a major water practice, providing design, treatment, modeling, testing, and management services for drinking water, wastewater, stormwater, and water resources to government and commercial clients. Water and environmental work is central to the company, making it a focused water-related services and engineering provider.

Price $57.22
Change -0.28%
Market Cap: $7.80 B (1.85% of sector)

Why It's Relevant

Affinity
4/5

A.O. Smith manufactures residential and commercial water heaters, boilers, and heat pumps, along with water treatment and filtration products for homes and businesses. It reports through North America and Rest of World segments, with the latter covering China, India, and Europe. Water heating is its largest product line and North America supplies most of its sales.

Price $20.85
Change -1.16%
Market Cap: $7.64 B (1.81% of sector)

Why It's Relevant

Affinity
4/5

Primo Brands, formed from the combination of Primo Water and BlueTriton, is a North American branded drinking water and water solutions company whose products include bottled water, water dispensers, refill and filtration services, and exchange offerings. Its business is built around supplying, distributing, and treating drinking water for households and businesses.

Price $121.49
Change +0.68%
Market Cap: $2.52 B (0.60% of sector)

Why It's Relevant

Affinity
4/5

Hawkins formulates, manufactures, blends, and distributes treatment chemicals, filtration media, and equipment for potable water, municipal and industrial wastewater, and industrial process water. Water Treatment is the largest of its three reportable segments and serves municipal utilities and industrial customers across the United States. The company also supplies specialty ingredients to food and industrial markets.

Price $71.23
Change -0.38%
Market Cap: $1.89 B (0.45% of sector)

Why It's Relevant

Affinity
4/5

Gorman-Rupp designs and manufactures pumps and pumping systems used to move water and wastewater, including municipal supply and sewage service, flood control, and storm water management. It also builds pumps for fire suppression, agriculture, and industrial fluid handling. Municipal and wastewater pumping is a core end market for the company.

Price $101.22
Change +0.70%
Market Cap: $968.73 M (0.23% of sector)

Why It's Relevant

Affinity
4/5

NWPX Infrastructure manufactures large-diameter, high-pressure steel pipeline systems used in water infrastructure, primarily for drinking water transmission and also for wastewater and seismic resilience projects. Its water transmission business engineers and delivers integrated water pipelines, and a precast concrete segment supplies stormwater and related infrastructure products.

Price $7.06
Change -0.42%
Market Cap: $361.91 M (0.09% of sector)

Why It's Relevant

Affinity
4/5

Energy Recovery makes pressure exchanger devices that capture and reuse pressure energy in reverse osmosis systems, sharply lowering the power needed to desalinate seawater. Seawater desalination is its core market, and the company is extending the same technology into wastewater treatment and industrial water reuse applications.

Price $11.11
Change +0.54%
Market Cap: $266.28 M (0.06% of sector)

Why It's Relevant

Affinity
4/5

Pure Cycle owns water and wastewater resources, infrastructure, and land in the Denver, Colorado area, and provides water and sewer service to developments while also building and selling residential lots. Its business centers on owning water rights and utility systems and monetizing them as the surrounding region grows.

Price $215.11
Change -3.24%
Market Cap: $43.01 B (10.21% of sector)

Why It's Relevant

Affinity
3/5

Ferguson distributes plumbing and infrastructure products across North America, and its waterworks business supplies pipe, valves, hydrants, meters, and fire protection materials to municipal water and wastewater projects. Contractors and utilities source the components used to build and repair water distribution systems through its branch network. Waterworks is one of several customer groups it serves.

Price $128.00
Change +3.02%
Market Cap: $16.78 B (3.98% of sector)

Why It's Relevant

Affinity
3/5

DuPont makes water filtration and purification technologies, including reverse osmosis membranes and ion exchange resins used in desalination, municipal drinking water, and industrial wastewater treatment. These products sit in its Healthcare and Water Technologies segment, one of the two reportable segments the company operates, alongside medical packaging and components.

Price $222.84
Change +0.32%
Market Cap: $16.38 B (3.89% of sector)

Why It's Relevant

Affinity
3/5

IDEX is a diversified maker of fluidics, pumps, meters, and dispensing equipment serving many industries, including a Water and Wastewater business that supplies pumps, valves, and pipeline inspection and rehabilitation tools to municipal water utilities. Water is a meaningful end market within a broader portfolio of precision fluid-handling products.

Price $71.03
Change -0.50%
Market Cap: $9.07 B (2.15% of sector)

Why It's Relevant

Affinity
3/5

Flowserve makes industrial pumps, valves, seals, and related flow control equipment for energy, chemical, and general industrial customers, including water and wastewater treatment and desalination facilities. Water and desalination applications are one of several end markets for its flow control products, giving the company meaningful but diversified water exposure.

Price $64.16
Change -0.68%
Market Cap: $8.31 B (1.97% of sector)

Why It's Relevant

Affinity
3/5

AECOM provides engineering design, consulting, and program management services, with water among its major end markets alongside transportation, facilities, environmental, and energy work. Its water practice covers drinking water, wastewater, stormwater, and water resources projects. Public agencies, utilities, and industrial clients hire the firm to plan, design, and manage treatment plants, pipelines, and water programs.

Price $70.60
Change +0.24%
Market Cap: $7.92 B (1.88% of sector)

Why It's Relevant

Affinity
3/5

Stantec is a professional services firm providing engineering, consulting, and design work, and it reports Water as one of its named business operating units. The water group designs drinking water, wastewater, stormwater, and water resource systems for municipal and industrial clients in North America and internationally.

Price $92.30
Change +0.45%
Market Cap: $4.02 B (0.96% of sector)

Why It's Relevant

Affinity
3/5

Itron supplies smart meters, sensors, and data management software for electricity, gas, and water utilities, including water metering and leak-detection systems that help utilities monitor consumption and reduce loss. Water is one of three utility end markets it serves, giving it meaningful but diversified exposure to water measurement.

Price $20.67
Change +3.09%
Market Cap: $2.59 B (0.61% of sector)

Why It's Relevant

Affinity
3/5

Select Water Solutions builds and operates water infrastructure for oil and gas producers, including pipelines, storage, and treatment and recycling facilities that reuse produced water in place of fresh water. It also provides water services and treatment chemistry, making water handling and reuse the center of its business.

Price $31.50
Change -1.07%
Market Cap: $1.77 B (0.42% of sector)

Why It's Relevant

Affinity
3/5

WaterBridge Infrastructure owns and operates produced water handling systems in the Permian and Delaware basins of West Texas and southeastern New Mexico. Its network includes gathering pipelines, treatment and recycling facilities, and disposal wells that manage the water produced alongside oil and natural gas. Produced water handling is the whole of its business.

Price $118.81
Change +0.40%
Market Cap: $1.20 B (0.29% of sector)

Why It's Relevant

Affinity
3/5

Lindsay Corporation makes irrigation equipment and infrastructure, including center-pivot and mobile irrigation systems that manage water use in agriculture, plus road infrastructure products. Its irrigation technology helps farms apply water efficiently, giving it exposure to agricultural water management within a broader infrastructure business.

Price $383.94
Change -2.70%
Market Cap: $39.03 B (9.26% of sector)

Why It's Relevant

Affinity
2/5

Roper Technologies is a diversified technology company that owns software and engineered products businesses, including Neptune Technology Group, a maker of water meters and metering systems for municipal utilities. Water metering is a small part of a company now weighted toward application software, giving it limited but real water exposure.

Stock prices are typically updated after market close. Market data may be delayed.
Educational content only. Not financial advice. Always conduct your own research before making investment decisions.

What Are Water Stocks?

Water stocks are shares of companies that supply, treat, move, measure, or maintain water and wastewater. The group goes well beyond water utilities. It spans the full water infrastructure value chain, from regulated utilities that deliver drinking water and sewage service to makers of pumps, filtration, and treatment equipment, suppliers of water meters and flow controls, and the distributors, engineers, and testing firms that build and service water systems. This page lists US-listed names across that value chain with daily prices and market data.

Categories in This List

  • Water utilities: regulated companies that collect, treat, and deliver drinking water and provide wastewater service, such as American Water Works (AWK), American States Water (AWR), California Water Service (CWT), Middlesex Water (MSEX), York Water (YORW), Artesian Resources (ARTNA), Global Water Resources (GWRS), H2O America (HTO), and the NYSE-listed Brazilian operator SABESP (SBS).
  • Water equipment and treatment: makers of pumps, filtration, valves, and treatment systems, including Xylem (XYL), Veralto (VLTO), Ecolab (ECL), Pentair (PNR), Watts Water (WTS), Zurn Elkay (ZWS), A.O. Smith (AOS), Franklin Electric (FELE), Gorman-Rupp (GRC), treatment chemistry supplier Hawkins (HWKN), membrane and filtration maker DuPont (DD), desalination operator Consolidated Water (CWCO), and desalination equipment specialist Energy Recovery (ERII).
  • Metering and flow: suppliers of water meters, flow measurement, and leak detection, such as Mueller Water Products (MWA), Badger Meter (BMI), and Itron (ITRI).
  • Water services, distribution, and engineering: distributors, engineers, and consultants that build and maintain water systems, including Core & Main (CNM), Ferguson (FERG), Tetra Tech (TTEK), AECOM (ACM), Stantec (STN), pipe makers NWPX Infrastructure (NWPX) and Advanced Drainage Systems (WMS), and branded drinking water company Primo Brands (PRMB).
  • Industrial and produced water: companies that gather, treat, and recycle water for industrial and energy customers, including Select Water Solutions (WTTR) and WaterBridge Infrastructure (WBI), alongside the industrial water treatment programs run by Ecolab (ECL) and Veralto (VLTO).

What Moves Water Stocks?

  • Rate cases: regulated water utilities earn returns set by state regulators. The outcome of rate cases, which determine allowed prices and returns on invested capital, is a primary driver of utility earnings.
  • Infrastructure spending: much of the water network is aging, and federal, state, and municipal spending on pipe replacement, treatment upgrades, and lead-line removal shapes demand for equipment, meters, and distribution products.
  • Drought and regulation: water scarcity, drought conditions, and rules on contaminants such as PFAS and lead can increase the need for treatment, recycling, conservation, and metering technology.
  • Industrial and data center demand: large computing sites, semiconductor plants, and other industrial users require cooling water, ultrapure water, and wastewater treatment. Ecolab reports data centers and microelectronics among its high technology customers, and several pump and equipment makers cite data center construction among their recent demand drivers.
  • Utility consolidation: the sector is fragmented across thousands of small municipal and investor-owned systems, and acquisitions of those systems, along with combinations between listed utilities, change the size and rate base of the companies on this list.
  • Capital and capex cycles: utilities and equipment customers fund large multiyear capital programs, so interest rates, construction activity, and municipal budgets affect spending and project timing.

Risks and Considerations

  • Regulated return caps: water utilities operate under regulator-approved rates, so allowed returns are capped and rate-case outcomes can fall short of requests.
  • Rate sensitivity: utilities and capital-intensive equipment buyers carry significant debt, so changes in interest rates affect financing costs and valuations.
  • Capital intensity: building and maintaining treatment plants, pipes, and pumping stations requires large ongoing investment that must be funded before it can be recovered through rates.
  • End-market linkage: some names on this list serve oil and gas producers or industrial customers rather than municipal utilities, so their volumes track drilling and industrial activity rather than a regulated rate base.
  • Concentration and liquidity: several names are small-cap or thinly traded, and some equipment segments are dominated by a few large players, which can add volatility.
  • Foreign and regulatory exposure: some names, including the SABESP ADR, are subject to non-US regulation, currency, and political factors.

Frequently Asked Questions

The list spans the water infrastructure value chain: regulated water utilities, water equipment and treatment makers, metering and flow companies, and water services, distribution, and testing firms. It is framed as water infrastructure rather than water utilities only.

Affinity is a 1 to 5 score reflecting how central water is to a company's business. A 5 marks a pure water utility or pure water equipment company, while lower scores mark diversified firms with meaningful, peripheral, or minimal water exposure. Ratings are reviewed periodically.

A water utility, such as American Water Works, delivers drinking water and wastewater service under regulated rates. A water equipment company, such as Xylem or Pentair, makes the pumps, filtration, treatment systems, and meters that utilities and industrial customers use to move, treat, and measure water.

Common drivers include utility rate-case decisions set by regulators, government and municipal spending on aging water infrastructure, drought and contaminant regulation that raises demand for treatment and metering, and broader capital and interest-rate cycles that affect large water capital programs.

The list is re-evaluated on a recurring basis against primary sources such as annual and quarterly filings, earnings releases, and company disclosures. A company is added only when its water role is verifiable through disclosed water revenue or a documented position in the water supply chain, and companies that publish heavy water language while reporting no water revenue are screened out. Names are removed when the case weakens, for example financial distress, an agreed acquisition, or a divested water business.

Large computing sites use water for cooling, and that demand reaches companies that treat, move, and measure industrial water. Ecolab reports data centers and microelectronics within its high technology customer base, and pump makers such as Gorman-Rupp cite data center construction among the drivers of recent demand. The effect varies widely by company, and it is disclosed by some names on this list and not by others.