Official Supplier Data: Jersey Water • DWI & BS 7593 Standards
Water Hardness in JE3
Official water quality verdict for outcode JE3: classified as Moderately Hard Water (160 PPM), supplied and treated by Jersey Water across 9 sectors.
Rating: Moderately Hard Water160 PPM • 11.2° ClarkSupplier: Jersey Water-20% below UK average
Outcode Mean Hardness160 PPM11.2° Clark • Moderately Hard Water16.0°fH • 9.0°dH
Outcode JE3 Household Water Quality Verdict & Practical Advice
Domestic tap water in outcode JE3 is officially classified as moderately hard water, averaging 160 PPM (mg/L CaCO₃) or 11.2° Clark, supplied and treated by Jersey Water across all 9 postcode sectors (1,165 postcodes). Readings range from 160 PPM (JE3 1) to 160 PPM (JE3 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
Serving 1,165 homes and businesses across outcode JE3, mains tap water supplied by Jersey Water registers an average mineral density of 160 PPM (16.0°fH / 9.0°dH). Rated as moderately 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 is remarkably consistent across all 9 sectors of JE3, with readings holding steady at 160 PPM from JE3 1 through to JE3 9. This uniform profile means every household on the Jersey Water network in this zone shares the same appliance settings and kettle descaling routine.
Treated in strict compliance with Drinking Water Inspectorate (DWI) standards, tap water in JE3 maintains an average mineral density of 160 PPM, ensuring consistent municipal distribution and wholesome tap drinking water from Jersey Water.
Households across JE3's 1,165 postcodes experience manageable mineral levels. While heating efficiency losses remain mild (4% – 7%), routine descaling of steam irons and thermostatic shower cartridges prevents gradual mineral clogging.
Estimated Annual Household Financial Impact
Limescale & Appliance Operating Costs in Outcode JE3
Based on 160 PPM mineral saturation (Moderately Hard Water), operating heating appliances across JE3's 1,165 households carries distinct annual economic consequences:
Tap water throughout outcode JE3 is supplied from a unified distribution network managed by Jersey Water. With all 9 sectors presenting an identical mineral concentration of 160 PPM, households across all 1,165 postcodes share uniform limescale risk profiles and identical appliance salt calibrations (H02 – H03).
Frequently Asked Questions: Water in Outcode JE3
Q: What is the average water hardness in outcode JE3?
Tap water across outcode JE3 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 Jersey Water.
Q: Is water in JE3 harder than the UK national average?
The UK baseline average is approximately 200 PPM. At 160 PPM, water in outcode JE3 is 20% softer than the national benchmark.
Q: What dishwasher salt setting is recommended for JE3?
For Bosch, Siemens, and Neff dishwashers in outcode JE3 (160 PPM), the recommended softener setting is H02 – H03.
Q: Who manages the municipal water supply in outcode JE3?
Public tap water infrastructure across all 9 sectors in outcode JE3 is distributed and monitored by Jersey Water.
All Postcode Sectors in JE3
Select a postcode sector below to view exact water softener salt settings, limescale protection guides, and appliance recommendations.