Official water quality verdict for outcode SY10: classified as Moderately Hard Water (156 PPM), supplied and treated by Hafren Dyfrdwy across 5 sectors.
Rating: Moderately Hard Water156 PPM • 10.9° ClarkSupplier: Hafren Dyfrdwy-22% below UK average
Outcode Mean Hardness156 PPM10.9° Clark • Moderately Hard Water15.6°fH • 8.7°dH
Outcode SY10 Household Water Quality Verdict & Practical Advice
Domestic tap water in outcode SY10 is officially classified as moderately hard water, averaging 156 PPM (mg/L CaCO₃) or 10.9° Clark, supplied and treated by Hafren Dyfrdwy across all 5 postcode sectors (835 postcodes). Readings range from 140 PPM (SY10 0) to 160 PPM (SY10 9), showing a local disparity of 20 PPM.
☕ Kettle & Tea Quality:
Gradual chalky ring forms in kettles over 2–3 months. Descale quarterly with citric acid crystals to keep heating elements clean.
🚿 Skin & Bathing:
Moderate mineral content is generally gentle on skin, producing normal lather with everyday soaps and shampoos.
🍽️ Appliances & Salt:
Set dishwashers to H02 – H03 to avoid cloudy glassware, and check boiler inhibitor levels at your annual service.
Local Installer Quote Network
Protect Your Heating & Appliances in SY10 (156 PPM): Compare Local Specialists
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vs. UK Benchmark-22% Softervs 200 PPM national average
If you have recently moved to SY10 or are setting up new kitchen appliances, getting your local water hardness right makes all the difference. Official water testing records from Hafren Dyfrdwy show a baseline mineral level of 156 PPM (10.9° Clark) across SY10's 835 postcodes. That classifies this postal area as moderately hard water, directly impacting how often you need to top up dishwasher salt and how fast heating elements fur up with scale.
Water hardness isn't identical across every street in SY10—there is a 20 PPM variance between neighborhoods. Residents in sector SY10 0 enjoy the softest water at 140 PPM, whereas taps in sector SY10 9 register the highest mineral load at 160 PPM. This localized disparity occurs because Hafren Dyfrdwy blends supplies from different boreholes, rivers, and storage reservoirs depending on elevation and seasonal demand.
Treated in strict compliance with Drinking Water Inspectorate (DWI) standards, tap water in SY10 maintains an average mineral density of 156 PPM, ensuring consistent municipal distribution and wholesome tap drinking water from Hafren Dyfrdwy.
With moderate water hardness (156 PPM) in SY10, kettles and showerheads build a light white chalk ring every 2–3 months. A quick rinse with warm water and white vinegar or food-grade citric acid crystals clears the element in minutes. To prevent cloudy glassware, maintain your dishwasher salt top-up set to H02 – H03. Combi boilers also benefit from regular inhibitor checks during annual boiler servicing in line with British Standard BS 7593.
Estimated Annual Household Financial Impact
Limescale & Appliance Operating Costs in Outcode SY10
Based on 156 PPM mineral saturation (Moderately Hard Water), operating heating appliances across SY10's 835 households carries distinct annual economic consequences:
Q: What is the average water hardness in outcode SY10?
Tap water across outcode SY10 averages 156 PPM (mg/L), which equals 10.9° Clark, 15.6°fH, or 8.7°dH. It is officially classified as moderately hard water water supplied by Hafren Dyfrdwy.
Q: Is water in SY10 harder than the UK national average?
The UK baseline average is approximately 200 PPM. At 156 PPM, water in outcode SY10 is 22% softer than the national benchmark.
Q: What dishwasher salt setting is recommended for SY10?
For Bosch, Siemens, and Neff dishwashers in outcode SY10 (156 PPM), the recommended softener setting is H02 – H03.
Q: Who manages the municipal water supply in outcode SY10?
Public tap water infrastructure across all 5 sectors in outcode SY10 is distributed and monitored by Hafren Dyfrdwy.
All Postcode Sectors in SY10
Select a postcode sector below to view exact water softener salt settings, limescale protection guides, and appliance recommendations.