Access to clean, safe drinking water is essential, and so is knowing where your water filter comes from. Buying water filters made in the USA not only ensures you’re investing in high-quality, rigorously tested products—it also supports American manufacturing, jobs, and environmental standards. Whether you’re purifying city water or filtering well water, choosing American-made water filtration systems contributes to the health of your home and the nation.
Below, we break down all the brands that manufacture water filters in the United States, followed by a comprehensive guide on how to find American-made water filters.
Complete List of Water Filter Brands Made in the USA
Arrow Home Products, founded in 1961 and based in Elk Grove Village, Illinois, produces a variety of household plastic goods, including water filter pitchers. Their water filtration products are made in the USA, and they remain one of the last remaining U.S. producers of plastic water pitchers and containers.
Founded in 1991, American Filter Company is based in Minnesota and manufactures a wide range of pleated, sediment, and carbon water filters. All of their filters are proudly made in the USA, and they serve residential, commercial, and industrial markets. They emphasize quality and affordability, with manufacturing taking place entirely within the United States.
Harmsco has been manufacturing water filters in the USA since 1958. Headquartered in North Palm Beach, Florida, Harmsco designs and produces filter housings and cartridges for residential, commercial, and municipal applications. Their products are made in their Florida facility, and they emphasize American craftsmanship and sustainability.
Omnipure, based in Caldwell, Idaho, has been manufacturing water filters in the U.S. since 1970. They are well-known for their inline filters used in refrigerators, coffee makers, and under-sink systems. All of Omnipure’s filters are manufactured in Idaho, and they control the entire production process to ensure quality and compliance with U.S. standards.
US Water Filters, part of US Water Systems, manufactures many of its filters and systems in the United States. The company is headquartered in Indiana and produces whole-house, reverse osmosis, and commercial filtration systems. While some components may be imported, the company is transparent about what is made in-house and remains committed to American manufacturing.
Instapure, headquartered in Colorado, is one of the original faucet-mounted filter companies, established in the 1970s. Many of their filters and filter housings are made in the USA. The brand focuses on point-of-use filters that are affordable and easy to install.
Epic Water Filters is based in Boulder, Colorado, and manufactures its filters domestically. Their water filter pitchers, dispensers, and bottles are all assembled and tested in the USA. While some parts may be globally sourced, the company maintains high standards for U.S. assembly and testing to ensure product safety and performance.
PureWater Filters, located in Louisville, Kentucky, specializes in inline and refrigerator filters. They design, assemble, and test their filters in the USA, with many components also being domestically sourced. The company is transparent about its supply chain and emphasizes customer service and American reliability.
Crystal Quest manufactures a wide range of filtration products at its facility in Georgia. They produce systems for homes, offices, and industrial settings. Most of their components and media are made in the USA, and the company is upfront about sourcing, emphasizing transparency and compliance.
Apex Water Filters, located in California, designs and assembles countertop and under-sink filtration systems in the USA. They source components both domestically and internationally but focus on U.S. assembly, testing, and customer service. Their systems meet NSF standards and are marketed for homes and small businesses.
Aquatron, located in California, designs and manufactures countertop and under-sink water filters. All of their production is done in the USA using BPA-free plastics and NSF-certified materials. The brand emphasizes safety, simplicity, and American quality, particularly for home and RV use.
Friends of Water is a California-based company that offers whole-house and under-sink filtration systems. Many of their filters are made in the USA, and they focus on eco-friendly and health-conscious water solutions. The brand works closely with American manufacturers and provides clear information about product origins.
Water Pure Technologies, based in Utah, manufactures gravity-fed, ceramic, and carbon water filters in the USA. Their filters are popular for emergency preparedness, off-grid living, and travel. The company highlights its American-made commitment and rigorous quality control.
Oceanic Water Systems, headquartered in California, manufactures custom reverse osmosis and whole-house filtration systems. Their systems are built and assembled in the USA using domestic and imported components. The company provides clear details about its production processes and quality standards.
Based in Indiana, DiscountFilters.com offers refrigerator, furnace, and whole-house filters. Many of their filters are made in the USA, especially under their ClearChoice and Tier1 brands. They provide transparency on which products are domestically manufactured and aim to support American jobs whenever possible.
Environmental Water Systems (EWS), based in Nevada, manufactures premium whole-house and commercial water filtration systems. Their systems are engineered, built, and tested in the USA. EWS prioritizes sustainability and longevity, with a commitment to using American labor and craftsmanship.
AquaOx is a veteran-owned company that manufactures whole-house water filtration systems in Columbia, South Carolina. Their systems are assembled, tested, and shipped from their U.S. facility. AquaOx is committed to transparency and proudly highlights its Made in USA status across its marketing.
Ceramic Filters Company is a family-owned business based in Michigan specializing in ceramic water filter candles. All their products are manufactured in the USA using domestic and international materials. Their filters are popular for gravity-fed systems and are known for durability and longevity.
How to Find Water Filters Made in the USA
What Does “Made in the USA” Mean?
Under Federal Trade Commission (FTC) guidelines, a product labeled “Made in the USA” must be “all or virtually all” made domestically. This includes the product’s components, processing, and labor. Unfortunately, enforcement is limited, and some companies use misleading language to suggest American origin.
To understand more about these definitions and how to navigate them, read our complete guide on Made in USA claims here: https://allamerican.org/research/how-to-find-made-in-usa/
Materials
Plastic Housings and Components
Most countertop, under-sink, and pitcher filters are encased in plastic housings. The U.S. has a strong plastic manufacturing base, particularly for BPA-free and food-grade plastics. Look for companies that state their housings are molded or assembled domestically. Imported plastics, particularly from China, may not meet the same safety standards.
Activated Carbon
Activated carbon is the most common filtration media. It can be derived from coconut shells, coal, or wood. While the U.S. produces activated carbon—particularly from coal and wood—most coconut shell-based carbon is imported from countries like Sri Lanka, India, or the Philippines. Domestic manufacturers that process or reactivate carbon locally often indicate higher quality control.
Ceramic Filters
Ceramic filtration media is less common but extremely effective. The U.S. has limited manufacturers of ceramic water filters, like Ceramic Filters Company. These are often made using a mix of domestic clay and imported materials, but formed and fired entirely in the USA.
Reverse Osmosis Membranes
Reverse osmosis (RO) systems rely on precision membranes. Some American companies manufacture membranes domestically, but many still rely on foreign sources, particularly from Japan, Korea, and Germany. Brands that advertise U.S.-made RO systems should disclose the membrane origin if they want to be fully transparent.
Metal Components
Stainless steel housings, filter mounts, and connectors are sometimes used for high-end systems. The U.S. still maintains strong domestic steel production, though stainless steel is often imported. Look for companies that source steel domestically or fabricate metal parts in the U.S.
Labeling
Country of origin labeling for water filters falls under U.S. Customs and Border Protection regulations (Title 19, Chapter 4, Section 1304) and the FTC’s guidelines for Made in USA claims. Unfortunately, enforcement is spotty, and many companies use misleading labels.
Terms like “Assembled in the USA” or “Designed in the USA” do not mean the product is fully American-made. Similarly, “Made in the USA with Imported Materials” indicates that not all components are domestic. Consumers should seek products labeled simply “Made in the USA” and verify with the manufacturer when in doubt.
Final Tips
When shopping for American-made water filters, start by reviewing a brand’s website and looking for clear statements about manufacturing origin. Don’t hesitate to contact customer service and ask direct questions. Transparency is a good sign of company integrity.
Also, prioritize filters certified by NSF, WQA, or similar organizations, which can further validate performance and safety. Supporting brands that manufacture in the U.S. helps ensure clean water and keeps American manufacturing strong.
Water Filter Manufacturers Not Made in the USA
Here are some brands we encountered in our research that aren’t made here.
- Brita: Founded in Germany, Brita’s manufacturing facilities are located in China, Germany, Switzerland, Italy, and the United Kingdom.
- Coway: A South Korean company that manufactures water purifiers, air purifiers, and other household appliances.
- Aquaphor: A European brand that designs and manufactures water filtration systems in the European Union.
- ZeroWater: While some of their products are made in Mexico, certain components are sourced from China, India, and the United States.
- PUR: A widely recognized brand offering water filtration products; adapters and mounts are made in China, filters themselves are manufactured in Mexico.
- iSpring: Made in Taiwan and China.
