First establish whether the change affects one tap, several taps or neighbouring properties before buying a filter.
Start with location
Compare freshly drawn cold water at the kitchen tap with other cold taps. Ask whether neighbours notice the same issue. A single fitting, appliance or section of plumbing points to a different investigation from an area-wide change.
Common descriptions
Chlorinous, metallic, plastic, rubbery, medicinal, musty and earthy descriptions can each have different possible causes. Water standing in plumbing may taste different from freshly drawn water.
When to contact the supplier
If a bad or strong taste or smell appears suddenly, makes the water unpalatable, affects multiple taps or causes concern, contact the water company. A filter should not be used to conceal an unexplained quality change.
Only choose treatment after diagnosis
Check a filter's certified or documented reduction claims, service flow, capacity and replacement interval against the identified problem. Taste preference alone does not imply hardness needs treating.
Sources and further checks
- Drinking Water Inspectorate: Taste and odour in drinking water
- GOV.UK: Check the quality of your drinking water
Sources are provided for verification. Product specifications and local supply information can change, so check the current primary source before acting.