Renting in St. Louis usually means your landlord controls the plumbing, the water heater, and the pipes inside the walls, while you control what you drink, what you filter, and what you report. When tap water looks, smells, or tastes wrong, the first question is less about whether the water is acceptable and more about who is responsible for the fix and how you can show the problem exists. This guide helps you sort those responsibilities before you pick up the phone.
Start with your lease and your city
Read the lease for language about repairs, plumbing, appliances, and utilities. Check who pays the water bill, because that affects who can request a utility check and who sees the usage records. Many St. Louis rentals fall under city or county housing codes, which generally expect landlords to keep plumbing and the water supply inside the building in working order. The exact requirements depend on where your property sits, so confirm the rules for your address with the housing or code enforcement office that covers it.
Sort the problem into one of three buckets
- Building plumbing: pipes inside the walls, shutoff valves, the water heater, and fixtures attached to the building. These usually fall to the landlord.
- Source water: cloudy, discolored, or sediment-filled water that arrives from the street supply. This is primarily a utility question, and your landlord may not control it, but the landlord should still know you reported it.
- Your own equipment: a pitcher filter, a countertop unit, or an appliance you brought in. You usually maintain these yourself, and you should not alter the building's plumbing to add them without written permission.
Sorting the problem first keeps you from sending a repair request to the wrong party and losing time while the issue continues.
Document before you complain
Write down what you see, smell, or taste, along with the dates and times. Take clear photos of stains, sediment, or the faucet in question. Note whether the problem appears at every fixture or only one, and whether it affects only hot water or only cold. Keep this simple log for several weeks so you are not relying on memory. The record helps no matter whether the cause turns out to be the building or the street supply, and it gives an inspector or a utility worker something concrete to review.
Test what you can test yourself
Test strips and handheld meters can show general readings and help you decide whether a lab test is worth ordering. A laboratory test can check for specific substances, such as metals, bacteria, or nitrate, and it will give you a report listing what was found. Ask the lab what it tests for, how to collect the sample, and how long it takes to receive results. A test tells you what is present in the water. It does not tell you how the water affects any particular person, so pair the results with the guidance of a qualified professional if you have questions about what they mean.
Make the written request
A written request creates a record that protects you. Email or letter both work, as long as you keep a copy. Include the following:
- Your address and unit, plus the date you first noticed the problem.
- A plain description of the symptom, such as cloudy water from the cold tap only.
- What you have already done, such as running the tap, cleaning a screen, or photographing the stain.
- The specific action you want, such as an inspection of the supply line or a repair to the water heater.
- A reasonable response date, and a request for a written reply.
Keep a copy of every message and any reply. If a phone call produces a promise, follow up in writing so the promise is on record.
When to bring in the city or the utility
If the landlord does not respond within a reasonable time, or if the problem affects the whole building, contact your city or county housing inspector and ask whether an inspection is available for your property. If you suspect the street supply, call your water utility and ask them to check the service line and the water at the meter. Bring your log and photos to either conversation. Do not withhold rent or make repairs yourself unless your lease or local rules clearly allow it. Get advice from a tenant rights organization or an attorney before you take that step, because the consequences can be significant.
What to do while you wait
If the water looks cloudy or discolored, let the cold tap run until it clears before using it, and avoid using hot water for drinking or cooking until the cause is known. If you use a filter, check the manufacturer's stated capabilities for the specific substance you are concerned about rather than assuming any filter will handle it. Keep your log running during this period, since a steady pattern of symptoms can be useful evidence.
The short version
Start with the lease and your city's housing rules, sort the problem into building plumbing, source water, or your own equipment, and document what you observe with dates and photos. Make a written request with a clear action and a response date, then bring in the housing inspector or your water utility if the response stalls. In St. Louis, that sequence gives you a record that the landlord, the city, and the utility can all act on, and it keeps the focus on the fix rather than on an argument.