Hard Water Testing & Treatment
Learn about hard water testing & treatment, including how the work is performed, common causes and warning signs, repair or installation options, maintenance considerations, and typical service cost factors. Use this guide to understand when professional plumbing service is needed and what to expect before scheduling work.
Common causes
High mineral content (calcium magnesium)
Chlorine chloramine presence
Sediment accumulation
Bacterial activity in supply
Solution methods
- 1
Ion-exchange softener installation
- 2
Reverse osmosis system setup
- 3
Whole house multi-stage filtration
- 4
UV disinfectant light setup
Tools you'll need
Water hardness test kit
TDS meter
Filter housing wrench
Pipe cutter
Average costs
| Service | Typical range |
|---|---|
| System installation | $500 – $3,000/ installation |
| Filter or media replacement | $75 – $500/ service |
| Water testing | $50 – $300/ service |
| Annual maintenance | $100 – $500/ service |
National averages. Local rates, permits and after-hours work can change these figures.
Estimate your cost
Pick your location, the job and how soon you need it to see a realistic price range for hard water testing & treatment.
Estimated range
$180 – $1,075
Based on national averages — add a location for a local range; standard scheduling.
Estimate only. The final price depends on an on-site inspection, parts, permits and access.
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