If you rent out a home in Washington, water quality becomes part of the property, whether or not you planned for it. Tenants notice spotty glassware, stiff towels, orange stains in the tub, and rough-feeling skin long before they notice anything else. This guide walks through what a landlord can reasonably check, what to write down, and how to decide who handles what.
Know what your water looks like before you list
Start with what the water in Washington is already known to contain. Public water reports for the area describe very hard water, with iron also listed among the concerns, along with radium and gross alpha measurements. Those reports describe the public supply as a whole, so they are a starting point, not a verdict on any one building. Your plumbing, your water heater, and the age of the pipes inside the walls all change what reaches a tap.
If your rental uses a private well, the picture is different. Wells in the Franklin County and Missouri River-bottom area often run harder and carry more iron than the public supply. Deeper bedrock wells can also show hydrogen sulfide, which has a rotten egg smell, naturally elevated radium from the Cambrian-Ordovician aquifer, nitrate from farmland or septic systems, and coliform or E. coli after flooding. Wells are unregulated, so nobody tests yours unless you do.
Decide who owns the equipment and who maintains it
Many landlord problems start with an unclear answer to a simple question: who owns the water equipment? A softener, filter, or iron treatment unit can be owned by you, leased, or left to the tenant. Each choice affects who pays for service, who calls for repairs, and what happens at move-out. Put the answer in writing in the lease, and name the specific equipment, its location, and its maintenance schedule.
Think about the handoff points too:
- Who adds salt or media, and how often
- Who checks the unit after a power outage or a long vacancy
- Who knows where the bypass valve is
- Who is responsible for stains or damage if equipment fails
Keep a simple record
A short file on each property helps when a tenant calls. Keep the date of the last water test, the lab that ran it, the results as the lab reported them, the installation or service dates, and any receipts for parts. Note the model and serial information from the equipment label. If a tenant reports a problem, write down what they described, when they described it, and what you did in response.
Testing is the step most landlords skip. A basic test from a certified lab can confirm hardness, iron, and other items of concern. For a well, testing once a year, and after any flood or heavy rain, is a sensible routine. The same goes for any change in taste, odor, or color. For public water, ask the utility for its most recent consumer report and compare what it lists with what you see at the tap.
Explain the water to tenants in plain terms
Tenants are more likely to stay calm when they know what to expect. Tell them in writing that the water in Washington is hard, that iron can stain fixtures and laundry, and what equipment is on the property. Explain what they should do if the water changes color, smells strange, or runs cloudy. Give them a maintenance contact so they do not have to guess who to call.
Avoid promising results you cannot control. Hard water is a mineral condition, and a treatment unit reduces some of it, but no unit makes water suitable for every use. Describe the equipment and its job, not a promise of outcomes.
Questions to answer before you rent
- Is the water public or private, and when was it last tested?
- Is there existing treatment, and who owns it?
- Does the water heater show scale or sediment at turnover?
- Has the property had any past flood or sewer backup?
- What does the lease say about equipment, repairs, and tenant use?
When to bring in a professional
If a test shows iron, hardness, or radium results you do not understand, ask the lab or a qualified water professional to explain the findings and the options. Look for someone who tests before recommending equipment, and ask for written findings. Be wary of anyone who wants to sell a system before they have seen a test. Keep the lab report with your records so the next tenant and the next repair start from facts.