Treatment decisions · Utah Water Quality
Do you need a water filter or a softener?
A softener addresses hardness. A filter’s performance depends on its design and certified claims. Start with what you want to change.
What problem are you trying to solve?
Taste, scale, and a health-related contaminant are different treatment goals. CDC recommends reviewing public-water reports or testing a private supply before choosing a filter. Water without a harmful contaminant may not need additional treatment.
Match the approach to the result
CDC describes the capabilities and limits of home treatment systems. A device category alone does not establish what a particular model removes.
| Approach | Main question to check |
|---|---|
| Water softener | Does it reduce the measured hardness? Softeners are not a substitute for disinfection. |
| Carbon filter | Which taste, odor, or contaminant reduction claims are certified for this exact model? |
| Reverse osmosis | Is the system certified for the substance of concern, and what water use and maintenance does it require? |
| Ultraviolet treatment | Is it designed for the microbial concern and source-water conditions? UV does not remove chemicals. |
Check the exact contaminant-reduction claim
Read the performance data sheet and independent certification listing for the exact model and cartridge. A taste-and-odor claim does not establish lead, nitrate, or PFAS reduction. Check the named substance, operating conditions, capacity, and replacement requirements.
EPA’s filtration fact sheet explains independent certification and why an EPA registration number is not an endorsement of a filter’s overall performance.
Consider where to treat and who will maintain it
A point-of-use system treats water at a drinking or cooking tap; a point-of-entry system treats incoming household water. CDC’s filter guide explains when each may fit and why maintenance matters. Include replacement cartridges, service, water use, and a plan to verify performance.
If the utility or health department has issued an active notice, follow that notice. A household filter is not a reason to disregard its instructions.
Official sources
- CDC: Choosing Home Water Filters ↗
- CDC: Home Water Treatment Systems ↗
- EPA: Home Drinking Water Filtration Fact Sheet ↗
Report years and sample dates may differ from the review date of this guide. Follow the issuing utility or health authority for an active advisory.