
Water Treatment
Water Testing
Identify and address water quality issues with our professional water testing services, providing you with detailed analysis and customized treatment solutions.
Water Treatment
Professional Water Testing Services
Identify and address water quality issues with Finken's professional water testing services. Our expert team provides detailed analysis and customized treatment solutions to ensure your water is clean and safe.
Comprehensive Testing Services
Our skilled technicians conduct thorough water testing to identify contaminants and other issues. Our testing services include:
- Testing for PFAS, iron, hardness, and other contaminants
- Detailed water quality analysis
- Customized treatment recommendations
- Follow-up testing to ensure effectiveness
Find the Right Water Treatment for Your Home
Hard water. Soft water. Iron. pH. The best way to understand your home’s water quality and contents is to test it. At Aqua Systems, we always start with a quick and easy water quality test, so we can recommend exactly the right water treatment system for you.
How it Works: Aqua Systems Water Test
The Aqua Systems water quality test evaluates hardness, iron, total dissolved solids, and pH levels.
Our free in-store test only takes a few minutes. First, your Finken experts gather water samples from the hot and cold side of your bathroom faucet and an untreated outside sample of water. Alternatively, you can bring the samples to your local Aqua Systems location (any empty, clean jar, sports bottle, or similar container works great). We add the testing agent(s) to the water sample and within a few minutes, you’ll have your results.

Additional Testing: At-Home Kits
If you want to dig even deeper into what’s in your water, you can purchase a third-party lab kit for in-home testing for lead, bacteria, PFAs, city water contents, well water contents, and more. While these tests are more comprehensive, they also require more processing time between purchase and final results.
DIY Hard Water Test
If you’re not sure whether your home has hard or soft water and want to find out quickly, you can do an easy hard water test at home. Fill a clean, empty bottle (with a lid or cap) with tap water up to one-third full. Add one to three drops of liquid dish soap. Put the lid or cap on the bottle and shake it thoroughly for five seconds. Look at the contents of the bottle. If there are lots of bubbles, your water is likely soft. If there aren’t many bubbles and/or the water looks cloudy, your water is likely hard.
More Water Treatment Services
Explore our full range of water treatment solutions designed to deliver clean, safe water for your home.

Water Softeners
Enjoy soft, clean water throughout your home with our professional water softener installation and maintenance services, reducing hardness and extending the life of your appliances.
Learn More
Reverse Osmosis - Drinking Water
Experience pure, great-tasting water with our reverse osmosis (RO) drinking water systems, providing you with clean and safe water directly from your tap.
Learn More
Problem Water
Tackle water quality issues such as PFAS, iron, and hardness with our specialized problem water solutions, ensuring your water is safe and healthy for your family.
Learn More
Whole Home Systems
Ensure your entire home benefits from clean, treated water with our comprehensive whole home water treatment systems, tailored to address all your water quality needs.
Learn MoreTrusted by Homeowners Across Central Minnesota
Get a Free Quote for Water Testing
Tell us what you need — water treatment, delivery, plumbing, heating & cooling, or spas — and a local specialist will get right back to you.
- Free, no-obligation quotes
- Family-owned since 1948
- 8 locations across MN & WI
