O'Fallon public water reports describe the tap water as hard, which means the mineral content that leaves scale on fixtures, spots on glass, and a dry feel on skin is already part of your supply. A report, however, covers water at the treatment plant or sampling point, not necessarily the water at your kitchen sink after it travels through the service line and your household plumbing. Before you size a softener, buy a cartridge, or assume your neighbor's setup will work for you, it helps to confirm what your own water is doing.

Quick Strips and Drops

Hardness test strips and liquid drop kits are sold at many hardware and home supply stores. You dip a strip or add drops to a sample, wait for the color to change, and compare the result to a printed chart. These tools give a fast read on whether your water is mild, moderate, or heavy.

Keep the limits in mind. Color matching depends on your eyes and the lighting, and chart ranges are broad. Use the reading to answer a simple question, such as whether the outdoor spigot differs from the kitchen tap, rather than treating it as a precise figure to design equipment around.

A Certified Lab Analysis

If you want a result you can compare directly against a utility report, or you want documentation before a home sale or a repair, send a sample to an accredited laboratory. Ask which tests are included. Hardness is often listed alongside calcium, magnesium, iron, manganese, and pH, and those extra results matter most if you rely on a private well or notice staining.

Ask whether the lab reports results in the same terms as the city report so the numbers line up. Ask how the sample should be collected, what container it needs, and how quickly it must arrive. Those details can change the result more than most homeowners expect.

Sampling So the Result Means Something

  • If the water has sat in the pipes overnight, run the cold tap for a few minutes first, unless your lab asks for a different protocol.
  • Collect from the kitchen cold tap and, separately, from an outdoor spigot or utility sink so you can see whether hardness varies across the house.
  • If you have a softener, collect one sample ahead of the unit and another after it so you know what the equipment is actually doing.
  • Label each bottle with the location, date, and time, and note whether the water was run first.
  • Keep the sample cool and deliver it promptly if the lab requires that.

Reading Your Results Next to the Town Report

Compare your numbers to the O'Fallon report, but remember that the report describes the public supply. If your home sits on a different branch of the line, uses a private well, or has a water heater that has been sitting unused for a long time, your reading may differ. A difference is information, not an emergency. It tells you where to look next.

If your home results are close to the city report and you still see scale, the cause is often the fixtures and appliances themselves. Clean the aerator, check the showerhead, and look at the scale pattern on glass and tile before deciding that the water is the only factor. If your results differ sharply from the city report, examine the plumbing path between the meter and your tap, and ask a licensed plumber to help if you cannot find the source.

When Hardness Is Not the Only Question

A hardness test answers one question. If the water also smells of rotten eggs, looks cloudy, shows staining that comes and goes, or tastes unusual, the next step is a broader panel, not a larger softener. For private wells, bacteria testing for coliform and E. coli through the Missouri State Public Health Lab is a practical starting point, and iron bacteria checks help explain slime and staining. Let your test results guide the equipment decision, not the other way around.

Keep a Simple Log

Write down each result with the date, the location in the house, and whether a softener was in service. Retest after any change to the system, after a power outage, or after a service visit. Over time the log shows whether your water is holding steady or drifting, which is more useful than any single reading.