Greater St. Louis
St. Louis Water Pros installs whole home softening, filtration and reverse osmosis for homes across the Greater St. Louis Area. Your municipal report and home water tests dictate the system, and the price and the scope of the project are conveyed clearly, in writing, before anything is installed.
Flagship bundle
Free assessment
then your price
Well systems are sized and priced separately.
The unit shown is one configuration. Yours is sized after the assessment.
We make the process easy from start to finish. First, we review your water concerns, then recommend the right solution, and finally install your system with care so you can enjoy better water with confidence.
We discuss your home's water source, concerns, and goals to better understand what type of filtration or treatment solution may be right for you.
We explain your options clearly, answer your questions, and recommend a system based on your water needs, home setup, and budget.
The system goes in where the water enters the house, and the reverse osmosis unit goes under the kitchen sink. You get a walk through of how it runs and what to expect from it, so nothing about it is a mystery a month later.
Fix a problem
Crust on fixtures, spotted glasses, soap that quits.
Chlorine at the tap, sulfur in the hot water.
Orange in the tub, grit in the aerators.
PFAS, chloramine, and what your utility publishes.
The systems
Scale, taste and smell, handled where the water comes into the house.
Drinking water at the kitchen tap. Free with the whole home system.
A private supply, sized on what is actually in it.
Most water problems in Greater St. Louis come down to one of these three. Each one is treated differently, which is why the assessment comes first.
Both St. Louis utilities soften river water at the plant, and both still deliver hardness. Missouri American Water lists 4 to 13 grains per gallon across St. Louis and St. Charles counties, and the City of St. Louis reported an average near 129 mg/L in 2025, roughly 7.5 grains. That is enough to leave scale on fixtures and spots on glassware.
The City of St. Louis Water Division and Missouri American Water both disinfect with chloramine rather than free chlorine. Chloramine holds steady in the pipes instead of gassing off, so the taste at the tap tends to stay put, and the carbon stage that handles it is sized differently. A sulfur smell that shows up in the hot water first is a different problem, and worth a look on its own.
Neither metro utility detected iron or manganese in 2025, so orange staining on a St. Louis supply usually points somewhere in the house rather than at the water coming in. Dissolved minerals are another matter. The City reported total dissolved solids averaging 298 mg/L in 2025, which is the white film left behind when a drop dries on a dark countertop.
Don't hesitate to ask additional questions in your assessment request.
Whole home filtration treats water throughout your house, while reverse osmosis provides advanced filtration for drinking and cooking water, typically at the kitchen sink.
If you notice hard water buildup, spots on fixtures, or reduced appliance performance, a water softener may help reduce mineral related issues.
Yes. St. Louis Water Pros offers customized treatment systems for both private well water and municipal city water.
Carbon filtration can help reduce chlorine taste, odors, and other common water concerns to improve the smell and taste of your home's water.
The best system depends on your water source, water quality concerns, household needs, and budget. We will review your needs and recommend the right solution.