Official Supplier Data: Severn Trent Water • DWI & BS 7593 Standards
Water Hardness in DE11
Official water quality verdict for outcode DE11: classified as Moderately Hard Water (160 PPM), supplied and treated by Severn Trent Water across 5 sectors.
Rating: Moderately Hard Water160 PPM • 11.2° ClarkSupplier: Severn Trent Water-20% below UK average
Outcode Mean Hardness160 PPM11.2° Clark • Moderately Hard Water16.0°fH • 9.0°dH
Outcode DE11 Household Water Quality Verdict & Practical Advice
Domestic tap water in outcode DE11 is officially classified as moderately hard water, averaging 160 PPM (mg/L CaCO₃) or 11.2° Clark, supplied and treated by Severn Trent Water across all 5 postcode sectors (1,083 postcodes). Readings range from 160 PPM (DE11 0) to 160 PPM (DE11 9) with consistent mineral levels throughout.
☕ 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.
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vs. UK Benchmark-20% Softervs 200 PPM national average
Tired of stubborn limescale buildup in your kettle or dealing with an unappetising film of scum on your morning cuppa? Tap water across all 5 postcode sectors in outcode DE11 (covering 1,083 homes) averages 160 PPM (11.2° Clark). Maintained and distributed by Severn Trent Water, this places the district firmly into the moderately hard water bracket—approximately 20% softer than the UK national baseline (200 PPM).
Water hardness is remarkably consistent across all 5 sectors of DE11, with readings holding steady at 160 PPM from DE11 0 through to DE11 9. This uniform profile means every household on the Severn Trent Water network in this zone shares the same appliance settings and kettle descaling routine.
Supplies across DE11 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 160 PPM across all 1,083 local postcodes under strict Drinking Water Inspectorate (DWI) compliance.
With moderate water hardness (160 PPM) in DE11, 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 DE11
Based on 160 PPM mineral saturation (Moderately Hard Water), operating heating appliances across DE11's 1,083 households carries distinct annual economic consequences:
Tap water throughout outcode DE11 is supplied from a unified distribution network managed by Severn Trent Water. With all 5 sectors presenting an identical mineral concentration of 160 PPM, households across all 1,083 postcodes share uniform limescale risk profiles and identical appliance salt calibrations (H02 – H03).
Frequently Asked Questions: Water in Outcode DE11
Q: What is the average water hardness in outcode DE11?
Tap water across outcode DE11 averages 160 PPM (mg/L), which equals 11.2° Clark, 16.0°fH, or 9.0°dH. It is officially classified as moderately hard water water supplied by Severn Trent Water.
Q: Is water in DE11 harder than the UK national average?
The UK baseline average is approximately 200 PPM. At 160 PPM, water in outcode DE11 is 20% softer than the national benchmark.
Q: What dishwasher salt setting is recommended for DE11?
For Bosch, Siemens, and Neff dishwashers in outcode DE11 (160 PPM), the recommended softener setting is H02 – H03.
Q: Who manages the municipal water supply in outcode DE11?
Public tap water infrastructure across all 5 sectors in outcode DE11 is distributed and monitored by Severn Trent Water.
All Postcode Sectors in DE11
Select a postcode sector below to view exact water softener salt settings, limescale protection guides, and appliance recommendations.