Well water treatment
On a private well, you're the water utility. Testing tells you what to treat.
Well water treatment means choosing equipment based on what a lab test finds in your private well: hardness, iron, manganese, sediment, nitrate or bacteria. It's for rural Olmsted County, Dodge County and Goodhue County homes that aren't on a city system.
Signs your well water needs attention
- Orange or brown stains in sinks and toilets
- Black specks or staining from manganese
- A softener that keeps fouling
- Cloudy or gritty water after rain
- A rotten-egg smell
- No recent nitrate or bacteria test
Why it matters here
Olmsted County says the region has more than 36,000 private wells and that testing and maintenance are the homeowner's job. Southeastern Minnesota's karst geology can let contaminants from the surface reach groundwater quickly, and the county flags nitrate above 10 mg/L as harmful. The U.S. EPA notes that private well water isn't regulated by the federal government and owners are responsible for its safety.
Common options
- Sediment filtration to protect everything downstream.
- Iron and manganese filters when levels are too high for a softener to handle.
- Softening for hardness, set to the measured number.
- Reverse osmosis at the kitchen sink for nitrate in drinking water.
- Disinfection such as UV, or shock chlorination and well repair, when bacteria show up. Find the cause, too.
Start with the free test
Olmsted County Public Health hands out free test kits, and the TAP-IN program may help eligible households pay for fixes. Bring your results when you call so the company can recommend the right equipment.
What affects the cost
How many problems the test finds, flow rate and household size, space near the pressure tank, and whether well repairs are needed before treatment.
Towns we connect you with help in
Common questions
Do I have to test my private well?
No law requires it, but Olmsted County says testing and maintenance are the homeowner's responsibility and offers free test kits.
Can one system fix everything?
Rarely. Iron, hardness, nitrate and bacteria are usually handled by different equipment, chosen from your test results.
Related services
- Water softener installation
- Water softener repair
- Salt-saving softener upgrades
- Reverse osmosis drinking water
More background: Olmsted County hard water guide.
Crusty faucets or a softener that quit?
One call puts you in touch with a water treatment company that works in Rochester and nearby towns.