Water Quality Lookup
What is in your tap water?
Check the contaminants in your local water supply, understand what they mean for your health, and get filter recommendations that actually match your needs. Covering 93 water utilities across 6 countries.
United States
41 utilities, 41 cities
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United Kingdom
17 utilities, 37 cities
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Ireland
1 utilities, 14 cities
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Canada
17 utilities, 23 cities
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Australia
11 utilities, 16 cities
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New Zealand
6 utilities, 9 cities
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How this works
- Pick your country above.
- Enter your postcode, ZIP code or city.
- See the contaminants known to be present in your water supply, sourced from the latest public water quality report.
- Get a filter recommendation: budget, mid-range, or premium, based on what you actually need to remove.
We cover 463 postcode / ZIP prefixes directly. If your specific area is not in our database, we fall back to country-level guidance based on known national water issues.
Important: The data shown reflects the most recent public water quality reports available at time of last review. Actual levels vary day-to-day and by address within a supply. Always verify with your local utility for current conditions, and if you have any reason to believe your water is unsafe, contact your provider directly.