Many O'Fallon homeowners assume that a water softener treats every drop entering the house. In many homes, though, the outdoor spigots, also called hose bibs, sit on a separate line that bypasses the softener. Other homes send softened water out to the yard. Knowing which situation you have helps you decide where to water plants, wash the car, and fill a pet bowl, and it helps you plan for cold weather.
Why This Question Matters in O'Fallon
Public water reports for O'Fallon describe the tap water as hard, which is why a softener is common here. Softened water is a useful choice for showers, laundry, and dishes. Many people prefer untreated water for watering lawns, gardens, and some houseplants, and some prefer it for animals. Softened water adds sodium through the ion exchange process, so it is a reasonable habit to know exactly which faucets carry it. This guide is about plumbing layout and practical checks, not about health effects.
Step 1: Check the Faucet Itself
Start outside. Turn on an outdoor spigot for a moment and let it run. Then check for these clues:
- Soap lather: Softened water feels slick and lathers easily with bar soap. Hard water feels rougher and leaves a film.
- Taste: Softened water often tastes slightly different from untreated water. Taste alone is not a test, but it can help you notice a difference.
- Labels or markings: Some homeowners or past installers tag lines with tape or marker. Look for handwritten notes near the water heater, softener, or meter.
These checks give you a starting point only. A quick observation cannot confirm what is in the water.
Step 2: Trace the Pipes Indoors
Next, go to the place where the main water line enters the house. This is often a utility room, garage, or basement near the water heater. Follow the cold water supply from the entry point. Find the softener inlet and outlet pipes. Then look for these arrangements:
- A bypass valve: Many softeners have a bypass valve with handles or a lever. When it is in bypass position, water flows around the softener. Confirm the valve position and whether the handles are labeled.
- A separate pipe: Some homes have a tee or split just before or after the softener. One branch feeds the house, and another feeds outdoor spigots or a yard line.
- An unsoftened line: Some outdoor spigots connect to the main line ahead of the softener. This is common in homes where the outdoor run was added later.
If the layout is hard to read, take a clear photo of the piping and mark which lines feed the house and which feed the yard. Keep that photo with your softener log or home maintenance notes.
Step 3: Test the Layout Safely
Once you know the basic layout, run a simple test. Make sure the softener is working and salt is in the brine tank. Then turn on an indoor softened tap, such as a kitchen sink, and then an outdoor spigot. Compare how each feels with a bar of soap. If both lather the same way, the outdoor line may be softened. If the outdoor water feels rougher, it probably bypasses the softener.
If you want a more formal answer, a water sample can be collected and sent to a lab. Collecting samples takes care, including clean containers, proper timing, and handling. Follow the instructions from the lab you choose.
Step 4: Plan for Winter
Outdoor spigots and lines in unheated spaces are a concern for O'Fallon winters. Water left in pipes can freeze and split them. Before the first hard freeze, do the following:
- Disconnect garden hoses from outdoor spigots.
- Close any indoor shutoff valve that supplies an outdoor spigot, if your home has one.
- Open the outdoor spigot to drain remaining water.
- Check that any softener drain line and brine tank area stay above freezing if they sit in a garage or outbuilding.
Winter checks also help you notice an unexpected drip or wet spot early.
When to Ask a Professional
If the lines are tangled, if you cannot find a bypass valve, or if you want to move an outdoor line to or from the softener, ask a licensed plumber to review the work. Ask them to show you where each line starts and ends, and ask for a written note of the layout. Do not cut or rework pressurized lines without the right tools and training.
Keep a Simple Record
Write down which spigots carry softened water, which do not, and where the bypass valve sits. Include the date and any changes. A short written layout is useful for future repairs, for a new family member, and for anyone who waters the yard while you are away. It also gives you a clear starting point if you later decide to change how your outdoor water is treated.