Mountain Spring Water Co
Verified Pro
21½+ years online4.5(24)
Water Treatment & Softeners in Fort Smith, AR
Compare 25 water treatment & softeners contractors near you in Fort Smith and surrounding area with an average rating of 4.5/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 23, 2026
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Water Treatment & Softeners in Fort Smith, AR
Fort Smith water-treatment contractors in this directory serve homes on Fort Smith municipal supply (chlorinated, moderately hard at 7-9 grains) and the surrounding Crawford and Sebastian County well-water properties where iron, manganese, hydrogen sulfide, and bacterial contamination are common. A whole-home twin-tank water softener for Fort Smith city water runs $1,800-$3,200 installed. Well-water systems with iron filtration, sediment pre-filter, softener, and UV sterilization typically land $4,500-$8,500.
Arkansas private wells are not regulated for routine water testing — owners are responsible for their own quality. Most Fort Smith-area installers will run a free in-home test for hardness, iron, and pH, and recommend an independent lab test ($120-$200) for bacteria, nitrates, and metals before sizing equipment.
Frequently Asked Questions
- What's the typical Fort Smith city water hardness?
- Fort Smith Utility water tests 7-9 grains per gallon (120-150 ppm) — moderately hard. A correctly sized softener at 32,000-48,000 grain capacity handles a typical 4-person home with regeneration every 7-10 days.
- Should I test my Crawford County well?
- Yes — at minimum annually for total coliform and nitrates, every 2-3 years for iron, manganese, sulfate, and pH. ADH-certified labs run a comprehensive panel for $150-$250.
- What does a UV system add for Fort Smith well water?
- UV sterilization at 30 mJ/cm² inactivates 99.99% of E. coli, Giardia, and Cryptosporidium without adding chemicals. A whole-home UV unit runs $600-$1,200 installed; lamps are $80-$150 and replace annually.
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NeedInstall helps connect customers with local installation professionals across Fort Smith and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.