How can I tell if my water is hard or soft? To find out about water hardness in your area, enter your postcode into this water quality checker. Was this helpful? Yes No Please let us have any further comments you may have Thank you for your feedback Send feedback Live Chat Related articles How do I check the water quality in my area? Do you add fluoride to your water? A problem with discoloured water meant I had to run my cold water tap. My property is metered so can I claim a flushing allowance?