Official Supplier Data: Severn Trent Water • DWI & BS 7593 Standards
Water Hardness in NG23
Official water quality verdict for outcode NG23: classified as Hard Water (210 PPM), supplied and treated by Severn Trent Water across 3 sectors.
Rating: Hard Water210 PPM • 14.7° ClarkSupplier: Severn Trent Water+5% above UK average
Outcode Mean Hardness210 PPM14.7° Clark • Hard Water21.0°fH • 11.8°dH
Outcode NG23 Household Water Quality Verdict & Practical Advice
Domestic tap water in outcode NG23 is officially classified as hard water, averaging 210 PPM (mg/L CaCO₃) or 14.7° Clark, supplied and treated by Severn Trent Water across all 3 postcode sectors (774 postcodes). Readings range from 160 PPM (NG23 5) to 310 PPM (NG23 7), showing a local disparity of 150 PPM.
☕ Kettle & Tea Quality:
Rapid limescale buildup in kettles with floating scum on your cuppa. Descale monthly using white vinegar or food-grade citric acid.
🚿 Skin & Bathing:
High calcium levels can aggravate dry skin & eczema sensitivity. Soap lathers less easily, often leaving a tight feeling after hot showers.
🍽️ Appliances & Salt:
Keep water softener salt topped up and calibrate dishwashers to H04 – H05. Protect combi boiler heat exchangers under BS 7593.
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vs. UK Benchmark+5% Hardervs 200 PPM national average
Serving 774 homes and businesses across outcode NG23, mains tap water supplied by Severn Trent Water registers an average mineral density of 210 PPM (21.0°fH / 11.8°dH). Rated as hard water, local water hardness determines how well laundry detergents lather, the rate of scale accumulation in combi boilers, and whether sensitive skin or eczema flares up after showers.
Water hardness isn't identical across every street in NG23—there is a 150 PPM variance between neighborhoods. Residents in sector NG23 5 enjoy the softest water at 160 PPM, whereas taps in sector NG23 7 register the highest mineral load at 310 PPM. This localized disparity occurs because Severn Trent Water blends supplies from different boreholes, rivers, and storage reservoirs depending on elevation and seasonal demand.
Supplies across NG23 are managed by Severn Trent Water through a balanced mix of lowland river abstraction and regional storage reservoirs. Water hardness fluctuates moderately between wet winter periods and dry summer months, averaging 210 PPM across all 774 local postcodes under strict Drinking Water Inspectorate (DWI) compliance.
Hard water in NG23 (210 PPM) often causes a cloudy scum on hot drinks and makes soap harder to lather, aggravating dry skin and eczema sensitivity after hot baths. For appliances, ensure regular water softener salt top-ups and calibrate your dishwasher to H04 – H05 to avoid cloudy glassware, white streaks, and heating element burnout across all 774 postcodes.
Estimated Annual Household Financial Impact
Limescale & Appliance Operating Costs in Outcode NG23
Based on 210 PPM mineral saturation (Hard Water), operating heating appliances across NG23's 774 households carries distinct annual economic consequences:
Extra Combi Boiler Gas Cost£130 – £190
Thermal heating transfer resistance caused by 1mm–1.5mm calcium carbonate build-up on heat exchangers.
Dishwasher Salt Requirement10 – 14 kg
Essential ion-exchange resin bed regeneration salt required to avoid glass clouding and element burnout.
Q: What is the average water hardness in outcode NG23?
Tap water across outcode NG23 averages 210 PPM (mg/L), which equals 14.7° Clark, 21.0°fH, or 11.8°dH. It is officially classified as hard water water supplied by Severn Trent Water.
Q: Is water in NG23 harder than the UK national average?
The UK baseline average is approximately 200 PPM. At 210 PPM, water in outcode NG23 is 5% harder than the national benchmark.
Q: What dishwasher salt setting is recommended for NG23?
For Bosch, Siemens, and Neff dishwashers in outcode NG23 (210 PPM), the recommended softener setting is H04 – H05.
Q: Who manages the municipal water supply in outcode NG23?
Public tap water infrastructure across all 3 sectors in outcode NG23 is distributed and monitored by Severn Trent Water.
All Postcode Sectors in NG23
Select a postcode sector below to view exact water softener salt settings, limescale protection guides, and appliance recommendations.