How much does well water treatment cost?
Well water treatment installed by Willow Springs ranges from $1,395 for UV disinfection to $2,895 for an iron filter, and most homes need one or two systems. Common setups run about $3,690 to $5,190, or roughly $78 to $110 a month with approved financing. Here are our prices for each piece and for the setups we see most.
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Well water equipment, installed
Every price includes equipment, installation by a licensed plumber, fittings, bypass and startup.
| Equipment | For | Price, installed | With financing* |
|---|---|---|---|
| Water softener | Hard water: scale, spots, soap that won't lather → | $2,295 | about $49/mo |
| Iron filter | Orange or brown stains, metallic taste → | $2,895 | about $61/mo |
| Acid neutralizer | Low pH, blue-green stains, pinhole leaks → | $2,295 | about $49/mo |
| UV disinfection | Coliform or E. coli on a lab test → | $1,395 | about $30/mo |
| Tankless reverse osmosis | Drinking water: nitrate, lead, arsenic, dissolved solids → | $1,195 | about $25/mo |
*60 months at 9.99% APR, subject to credit approval. Prices installed, as of October 2026.
What typical wells need
| If your test shows | You'd need | Price, installed | With financing* |
|---|---|---|---|
| Hard water with iron | Iron filter + softener | $5,190 | about $110/mo |
| Hard, acidic water | Acid neutralizer + softener | $4,590 | about $98/mo |
| Hard water with bacteria | Softener + UV disinfection | $3,690 | about $78/mo |
| Acidic water with bacteria | Acid neutralizer + UV disinfection | $3,690 | about $78/mo |
| Iron and bacteria | Iron filter + UV disinfection | $4,290 | about $91/mo |
| Hard water, iron and bacteria | Iron filter + softener + UV disinfection | $6,585 | about $140/mo |
*60 months at 9.99% APR, subject to credit approval. Prices installed, as of October 2026.
What local wells run into
| Penn State lab samples, 2007 to 2025 | Berks | Lancaster |
|---|---|---|
| Total coliform | 40.2% | 41.5% |
| E. coli | 7.8% | 10.3% |
| Corrosivity index | 76.8% | 68.4% |
| Manganese | 13.4% | 14.7% |
| Iron | 10.9% | not listed here |
| Nitrate | 7.5% | 24.8% |
Share of samples failing each standard. Samples homeowners chose to send in, not random surveys.
Test before you buy
Every well is different, and two wells on the same road can need different equipment. We test hardness, iron, manganese, pH and TDS at your sink for free and help you arrange a certified lab test for bacteria, nitrate and lead. You pay only for the treatment your water needs.
Well water treatment cost: common questions
How much does well water treatment cost?
It depends on what your water needs. Single systems installed by Willow Springs range from $1,395 for UV disinfection to $2,895 for an iron filter. Most wells need one or two, so typical setups run about $3,690 to $5,190, and a well with hardness, iron and bacteria is about $6,585.
Can I finance it?
Yes, with approved credit: 60 months at 9.99% APR. For example, an iron filter plus softener at $5,190 is about $110 a month.
Why does well water cost more to treat than city water?
City water is already disinfected and mostly balanced. A private well can have hardness, iron, manganese, low pH, sulfur smell and bacteria in any combination, and each problem needs its own equipment.
How do I know what my well needs?
Test first. We test hardness, iron, manganese, pH and total dissolved solids free at your sink, and help you arrange a certified lab test for bacteria, nitrate and lead. Penn State Extension recommends testing for bacteria every year.
In what order is equipment installed?
Generally sediment and pH correction first, then iron removal, then softening, with UV disinfection last so it treats clear water. The exact order depends on your test.
Written by Sam Beiler, co-founder of Willow Springs Water Company, Sinking Spring, PA. Last updated October 2026.
- Penn State Agricultural Analytical Services Lab, Berks County drinking water test summary
- Penn State Agricultural Analytical Services Lab, Lancaster County drinking water test summary
- Penn State Extension, Testing Your Drinking Water
- Penn State Extension, Corrosive Water Problems
- Penn State Extension, Coliform Bacteria
- Penn State Extension, Iron and Manganese in Private Water Systems