Mueller Water Products
A publicly traded North American supplier of valves, fire hydrants, metering equipment, and technologies for water infrastructure.
Last updated August 22, 2026
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Overview
Mueller Water Products, Inc. is a publicly traded American water-infrastructure company headquartered in Atlanta, Georgia. Its products are used primarily by municipal water utilities, contractors, distributors, and industrial customers to control, measure, protect, and maintain water networks. The company is best known for large-diameter and distribution-system valves, fire hydrants, pipe fittings, and related equipment, while its technology activities address leak detection, metering, condition assessment, and other forms of network monitoring. The company was created through the combination of several established waterworks and industrial businesses. Although Mueller Water Products itself was incorporated as a standalone company in 2005 and became a publicly held company in 2006, important predecessor operations have histories reaching back to the nineteenth century. The earliest lineage associated with Mueller Co. dates to 1857, when Hieronymus Mueller founded a manufacturing business in Decatur, Illinois. Other predecessor businesses included U.S. Pipe, whose corporate history began with the formation of United States Cast Iron Pipe and Foundry Company in 1899, and the business that became Anvil International, which developed from earlier pipe, sprinkler, and fire-protection operations. The modern company was assembled in 2005 when Jim Walter Corporation acquired Mueller Co. and Anvil International and combined them with U.S. Pipe-related operations. The resulting businesses were subsequently spun off as Mueller Water Products, with corporate headquarters later established in Atlanta. Its initial structure included Mueller Co., Anvil International, and U.S. Pipe. The portfolio became more focused over time: U.S. Pipe was divested in 2012, and Anvil International was sold in 2017. The company also expanded its technology and control-valve capabilities, including the acquisition of Singer Valve in 2017. Mueller Water Products is organized around two broad reporting areas: infrastructure products and technologies products. Mueller Co. is the principal waterworks operating business and is associated with valves, fire hydrants, fittings, meters, and related utility products. Mueller Technologies and affiliated brands such as Echologics and Mueller Systems support monitoring, leak detection, metering, and pipe-condition assessment. This combination gives the company a position that extends beyond manufacturing physical components to helping utilities identify losses, manage assets, and improve the reliability of distribution systems. The company positions its products around durability, safety, regulatory compliance, and lifecycle performance rather than consumer branding. Its customer base is mainly business-to-business, and its equipment is typically specified in utility standards, engineering designs, construction projects, and maintenance programs. Sustainability-related activities described for the company include use of lost-foam casting for valves and hydrants, availability of low-lead waterworks brass products, and tracking of energy, water, gas, and solid-waste performance indicators. Mueller Water Products also identifies with industry and environmental programs including the U.S. Green Building Council and the EPA Energy Star program.
History
Mueller Water Products was incorporated as a standalone company on September 22, 2005, but its operating heritage is substantially older. The oldest lineage associated with the company is connected to Mueller Co., whose predecessor was founded by Hieronymus Mueller in Decatur, Illinois, in 1857. That business developed manufacturing expertise serving waterworks and related industrial applications and eventually became one of the principal components of the modern company. Other predecessor businesses contributed additional parts of the portfolio. Providence Steam and Gas Pipe became General Fire Extinguisher Co. in 1892 after combining with several sprinkler manufacturers. The company was renamed Grinnell Co. in 1919 in recognition of its president, Frederick Grinnell. Grinnell later became known as Anvil International in 2000. Separately, twelve companies formed United States Cast Iron Pipe and Foundry Company in 1899. That business later adopted the name U.S. Pipe after dropping the words “Cast Iron” in 1929. The corporate combination that produced Mueller Water Products took shape in 2005. Jim Walter Corporation acquired Mueller Co. and Anvil International and combined those businesses with U.S. Pipe-related operations. The resulting group brought together manufacturers of valves, hydrants, pipe products, fire-protection equipment, and related industrial goods. In 2006, the combined business was spun off as Mueller Water Products, Inc., a publicly traded company. The company moved its headquarters from Decatur, Illinois, to Atlanta, Georgia. At first, Mueller Water Products operated through three principal business units: Mueller Co., Anvil International, and U.S. Pipe. The portfolio was later narrowed. In 2012, the company divested U.S. Pipe to Wynnchurch Capital, Ltd., leaving Mueller Co. as the core business for valves and fire hydrants. In early 2017, Anvil International was sold to One Equity Partners. That same year, Mueller Water Products completed the acquisition of Singer Valve, a manufacturer of automatic control valves, strengthening its presence in controlled flow and pressure-management applications. The company’s later organization centered on infrastructure products and technologies products. Mueller Co. remained associated with waterworks valves, hydrants, fittings, meters, and utility equipment. Technology-oriented activities included brands and subsidiaries such as Echologics and Mueller Systems, which address leak detection, metering, water-network monitoring, and pipe-condition assessment. This structure reflects a broader industry shift in which utilities seek both physical network components and digital or diagnostic tools to reduce water loss and manage aging assets. Mueller Water Products has also described manufacturing and environmental initiatives. It identifies lost-foam casting as a process used for valves and hydrants that can reduce material requirements, waste, and emissions compared with conventional casting approaches. The company offers low-lead varieties of its waterworks brass products and tracks performance indicators in areas including energy, water conservation, gas, and solid waste. It has also been associated with the U.S. Green Building Council and the EPA Energy Star program. The company’s historical development therefore combines nineteenth-century waterworks manufacturing lineages with later portfolio consolidation, divestitures, acquisitions, and expansion into infrastructure technologies.
- 2017
Anvil International sold and Singer Valve acquired
[1]The company sold Anvil International to One Equity Partners and completed the acquisition of Singer Valve, a maker of automatic control valves.
- 2012
U.S. Pipe divested
[1]Mueller Water Products sold U.S. Pipe to Wynnchurch Capital, Ltd., focusing the remaining portfolio on valves, hydrants, and related businesses.
- 2006
Public-company spin-off
[1]The combined business was spun off as the publicly held Mueller Water Products, Inc., with headquarters later based in Atlanta.
- 2005
Mueller Water Products incorporated
[1]Mueller Water Products was incorporated as a standalone company on September 22, 2005, following the combination of Mueller Co., Anvil International, and U.S. Pipe-related operations.
- 2000
Grinnell lineage becomes Anvil International
[1]The business later incorporated into Mueller Water Products became known as Anvil International.
- 1919
General Fire Extinguisher Co. renamed Grinnell Co.
[1]The company adopted the Grinnell name after its president, Frederick Grinnell.
- 1899
United States Cast Iron Pipe and Foundry Company formed
[1]Twelve companies incorporated United States Cast Iron Pipe and Foundry Company, a predecessor of U.S. Pipe.
- 1892
Providence Steam and Gas Pipe becomes General Fire Extinguisher Co.
[1]A predecessor associated with the later Anvil International lineage became General Fire Extinguisher Co. after combining with sprinkler manufacturers.
- 1857
Mueller predecessor founded
[1]Hieronymus Mueller founded the predecessor business associated with Mueller Co. in Decatur, Illinois.
Products and positioning
A specialist business-to-business supplier focused on durable, utility-grade water infrastructure equipment and technologies, with emphasis on reliability, safety, regulatory compliance, and lifecycle management.
Waterworks valves
Mueller valves
Mueller Co. manufactures valves used in municipal and other water-distribution systems. These products control, isolate, and direct flow in networks that require durable equipment capable of supporting installation, maintenance, and long service intervals. The valve portfolio is a central part of the company’s infrastructure-products business.
Fire-protection infrastructure
Mueller fire hydrants
Mueller fire hydrants are designed for connection to public and private water systems used by fire departments and emergency responders. They are among the company’s most recognizable infrastructure products and are supplied primarily through utility, engineering, construction, and distribution channels rather than direct consumer retail.
Water metering
Mueller water meters and metering systems
Metering products associated with Mueller Systems support measurement of water consumption and utility-management workflows. They are intended for utility and infrastructure applications, where accurate measurement can assist billing, operational planning, demand management, and identification of unusual consumption patterns.
Leak detection and pipe assessment
Echologics technologies
Echologics is associated with technologies for detecting leaks and assessing the condition of water pipes. These capabilities complement physical valves and hydrants by helping utilities locate losses, prioritize maintenance, and make better-informed decisions about aging distribution assets.
Automatic control valves · 2017
Singer Valve
Singer Valve manufactures automatic control valves used to regulate water flow and pressure in infrastructure systems. Mueller Water Products added the business through an acquisition completed in 2017, broadening its offering in controlled-flow applications.
Waterworks fittings and components
Waterworks brass products
The company offers waterworks brass products, including low-lead varieties intended to support drinking-water requirements and applicable regulatory expectations. These components serve utility and distribution-system installations alongside valves, fittings, meters, and related equipment.
Brand decisions
2017
Sale of Anvil International and acquisition of Singer ValveM&ABackground
Mueller Water Products continued to reshape its portfolio after the U.S. Pipe divestiture, exiting Anvil International while adding capabilities in automatic control valves.
Action taken
The company sold Anvil International to One Equity Partners and completed the acquisition of Singer Valve.
Aftermath
The transactions further emphasized Mueller Water Products’ water-infrastructure and controlled-flow focus and expanded its technology and valve offering.
2012
Divestiture of U.S. PipeM&ABackground
Mueller Water Products initially operated with U.S. Pipe as one of three principal business units. The company subsequently chose to sell the business and concentrate more closely on water valves, hydrants, and related products and technologies.
Action taken
U.S. Pipe was divested to Wynnchurch Capital, Ltd.
Aftermath
The transaction left Mueller Water Products focused on its valve and hydrant activities under Mueller Co. and its technology-related operations.
Recent events
- Unconfirmed
Mueller Water Products acquires i2O Water[3]
Reported:
Mueller Water Products announced that it had acquired i2O Water, a provider of pressure management solutions, for approximately $20 million.
- Unconfirmed
Mueller announces PipeRank assessment service[4]
Mueller announced the release of PipeRank, a virtual condition-assessment service designed to help water utilities identify pipe failures before they happen.
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