Filtering your water is one of the best ways to improve its taste and quality. Whether you’re using a basic pitcher filter or a whole-house water filtration system, these solutions are designed to remove contaminants and provide cleaner, better-tasting water. However, it can be frustrating when your water still tastes unpleasant despite filtration.
This blog will explore some of the common reasons why your water may still taste bad after filtration and offer potential solutions to ensure your water tastes as fresh as it should.

Your Filter Needs Replacement
Filters are not permanent solutions; they have a limited lifespan based on usage and the level of contaminants in your water. If your water still tastes bad:
- Clogged Filter: A dirty filter can harbor bacteria and reintroduce impurities into your water, worsening its taste.
- Expired Filter: Over time, a filter loses its effectiveness, allowing contaminants to pass through.
Solution: Check the manufacturer’s guidelines for filter replacement intervals and ensure you change your filters regularly to maintain optimal performance.
Incorrect Filter Type
Not all filters are designed to tackle every type of water issue. For example:
- Activated Carbon Filters: Effective for chlorine and some organic compounds but not for heavy metals like lead or arsenic.
- Reverse Osmosis Systems: Excellent for removing dissolved solids but may not address bacteria or certain odors.
Solution: Conduct a water test to identify specific contaminants and ensure you’re using the appropriate filtration system for your needs.
High Mineral Content in Your Water
If your water tastes metallic or salty, it could indicate high levels of minerals such as iron, manganese, or sodium:
- Hard Water: High levels of calcium and magnesium can affect taste and leave residue on appliances.
- Dissolved Metals: Excessive iron or copper can cause an unpleasant metallic taste.
Solution: A water softener or additional filtration system, such as an iron filter, may be required to remove these minerals and improve taste.
Contamination in Plumbing
Even with a filtration system, water can pick up contaminants as it travels through your plumbing:
- Old or Corroded Pipes: Lead or other metals from outdated plumbing can leach into the water.
- Bacteria Build-Up: Biofilm or sediment in pipes can cause strange tastes and odors.
Solution: Inspect your plumbing system for potential issues and consider professional cleaning or pipe replacement if necessary.
Filtered Water Sits Too Long
Stagnant water can develop an unpleasant taste even after filtration:
- Storage Tanks: If your filtration system uses a tank, water that sits for long periods can absorb odors from the surrounding environment.
- Pitcher Filters: If filtered water remains unused for days, it may develop an off-taste.
Solution: Regularly clean water storage containers and ensure a steady flow of water through your system to maintain freshness.
Chlorine Residue or Treatment Chemicals
Municipal water is often treated with chlorine to kill bacteria. While filtration systems reduce chlorine, traces may remain, leaving a distinct chemical taste.
Solution: Upgrade to a multi-stage filtration system that includes activated carbon and other methods to completely remove residual chlorine and improve taste.
Bacteria or Mold in the Filtration System
A poorly maintained filtration system can become a breeding ground for bacteria and mold, contaminating your water.
Solution: Follow the manufacturer’s instructions for cleaning and sanitizing your filtration system. If problems persist, consider professional maintenance.
Local Water Supply Issues
Sometimes the issue lies with your water source rather than your filtration system:
- Seasonal Changes: Increased runoff during rainy seasons can affect water quality.
- Water Treatment Plant Issues: If your municipal water supply experiences problems, it may impact the taste.
Solution: Stay informed about your local water supply and consider contacting your water provider if issues persist. In severe cases, a more robust filtration system may be needed.
When to Contact Greer Water Works Plumbers
If you’ve tried these solutions and your water still tastes bad, it’s time to call in the experts. Greer Water Works Plumbers in Pasadena, MD, specialize in diagnosing and resolving water quality issues. Whether it’s upgrading your filtration system, inspecting your plumbing, or addressing water source problems, we’ve got you covered.
Don’t let poor water quality disrupt your home. Contact Greer Water Works Plumbers today for professional water treatment solutions and all your plumbing needs!