Greater London · London

Is Enfield water hard or soft?

Very Hard at 325 ppm · 11 postcode districts

  • Supplier Affinity Water
  • County Greater London
  • Postcodes 11
Area average
325
ppm CaCO₃
Very Hard
Soft
Moderate
Hard
Very hard
0100200300400+

Enfield water hardness at a glance

  1. Enfield water is very hard, averaging 325 ppm across 11 postcode districts.
  2. That is 118 ppm above the UK average of 207 ppm.
  3. The hardest district is EN9 at 346 ppm; the softest is EN10 at 246 ppm.
  4. The supplier is Affinity Water.
  5. Expect limescale on kettles, taps and showerheads; see the water softener guide for sizing and costs.

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The average water hardness in Enfield is 325 ppm, classified as very hard. Enfield is served by Affinity Water, covering 11 postcode districts across Greater London in the London region.

Hardness varies across the area. See the table below for a breakdown by postcode district. EN9 has the hardest water at 346 ppm, while EN10 is the softest at 246 ppm.

By postcode

Water Hardness by Postcode in Enfield

Sorted by hardness. Tap a postcode for full details.

Postcode Water Company Hardness PPM Level
EN9 Affinity Water
346
346 ppm Very Hard
EN8 Affinity Water
345
345 ppm Very Hard
EN7 Affinity Water
344
344 ppm Very Hard
EN6 Affinity Water
343
343 ppm Very Hard
EN5 Affinity Water
342
342 ppm Very Hard
EN4 Affinity Water
341
341 ppm Very Hard
EN3 Affinity Water
340
340 ppm Very Hard
EN2 Affinity Water
339
339 ppm Very Hard
EN1 Affinity Water
338
338 ppm Very Hard
EN11 Affinity Water
247
247 ppm Hard
EN10 Affinity Water
246
246 ppm Hard
Suppliers

Water Companies Serving Enfield

Tap for full coverage area and hardness data.

Affinity Water

268 ppm Hard

Each water company publishes its own hardness data, so you can cross-check the Enfield figures here against the published hardness data from Affinity Water.

Water Hardness Guides

Learn more about water hardness and how to manage it.

What Is Water Hardness? Effects Solutions Water Softeners Limescale Removal
Recommended

Products for Enfield

Popular choices for households dealing with very hard water.

Splendid Twin Tank Water Softener

Twin-tank electric softener sized for 1 to 7 bedroom homes. Removes limescale from pipes, boilers, and appliances and delivers continuous soft water, with metered regeneration to keep salt use low.

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Philips Shower Filter

Quick win for skin and hair in hard water areas. Reduces chlorine and limescale, fits standard shower hoses in minutes, no tools needed. Cartridge lasts around 6 months.

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BRITA Marella Water Filter Jug

UK's best-selling filter jug. Reduces limescale, chlorine, and metals for better-tasting tap water. Quick first step alongside a softener.

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FAQ

Common questions about Enfield water

Is Enfield water hard or soft?
Enfield is classified as very hard, averaging 325 ppm across 11 postcode districts. Expect visible limescale on kettles and taps within weeks at this level.
Which postcode in Enfield has the hardest water?
EN9 has the hardest water in Enfield at 346 ppm, while EN10 is the softest at 246 ppm. See the full table above for every district.
Which water company supplies Enfield?
Enfield is supplied by Affinity Water, covering 11 postcode districts across Greater London.
Is tap water in Enfield safe to drink?
Hardness is not a safety issue: the World Health Organization sets no health-based limit for water hardness, so hard and soft water are both fine to drink. Drinking water quality is regulated by the Drinking Water Inspectorate in England and Wales and the Drinking Water Quality Regulator in Scotland, and your water company publishes test results for your area.
Do I need a water softener in Enfield?
At 325 ppm, many households in Enfield notice limescale in kettles and showerheads within weeks. A shower filter is the cheapest first step; a whole-house softener gives the most complete protection.
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