Water Hardness Atlas ZIP / postcode

Water hardness in Nether Stowey

172 mg/L hard

Tap water in Nether Stowey is hard: 172 mg/L (10 gpg · 9.6 °dH · 17.2 °fH).

<6060–120120–180>180 mg/L

Source: Wessex Water — domestic drinking water quality (Stream open data, CC BY) (2025-11) · data checked 2026-10-20

Range across supply zones: 153–181 mg/L.

UK suppliers report mg/L CaCO₃ and often Clark degrees (1 °Clark = 14.25 mg/L).

Water data

Total hardness172 mg/L
UtilityWessex Water

How Nether Stowey compares

Ranking of the hardest and softest water in the United Kingdom →

What it means at home

How much salt will you use for softening?

Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.

Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).

Estimates for planning, not a quote. Check your appliance manual for exact settings.

Dishwasher setting in Nether Stowey

BrandSetting for this water
BoschH02
Miele10 °dH
AEG / Electrolux2
Beko3rd
HooverS1
LGH2

From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →

FAQ

Is Nether Stowey water hard or soft?

It is hard: 172 mg/L as CaCO₃ (10 gpg, 9.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.

Is tap water in Nether Stowey safe to drink?

Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. UK suppliers report mg/L CaCO₃ and often Clark degrees (1 °Clark = 14.25 mg/L).

How many grains per gallon is Nether Stowey water?

10 gpg, equal to 9.6 °dH, 17.2 °fH or 172 mg/L calcium carbonate.

What dishwasher salt setting should I use in Nether Stowey?

For 172 mg/L (9.6 °dH) check your manufacturer's table: level 4–5.

Do I need a water softener in Nether Stowey?

Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.

Source

Source: Wessex Water — domestic drinking water quality (Stream open data, CC BY) (2025-11). Method: own measurement. Wessex Water — domestic drinking water quality (Stream open data, CC BY) · Outdated figure? Tell us

Nearby cities

Bishops Lydeard47 mg/LBridgwater106 mg/LNorth Petherton42 mg/LWilliton48 mg/LWatchet46 mg/LMilverton48 mg/L
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