hardnessmap.com is an independent, free information site about water hardness in Germany, Spain and Mexico. You do not need an account to use it.
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Hardness values come from water suppliers and official sources and are guidance only. Tap water can differ by street and season. Ask your water supplier for your exact value.
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Operator: Jonathan Knowles, United Kingdom. Questions, corrections or data requests: jonathan@jonathanhere.com.