Water hardness in Manchester
30 mg/L soft
Tap water in Manchester is soft: 30 mg/L (1.7 gpg · 1.7 °dH · 3 °fH).
Source: United Utilities - Check your water quality (postcode water supply zone report, rolling 12 months) (2026) · data checked 2026-10-22
Range across supply zones: 27–32 mg/L.
12 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| mg/L | mg/L | ||
|---|---|---|---|
| Blackley (Z313; M9) | 30 | 30 | soft |
| Broughton (Z284; M2, M8) | 28 | 28 | soft |
| Chorlton (Z275; M21) | 31 | 31 | soft |
| Didsbury (Z276; M19, M20) | 30 | 30 | soft |
| Gorton (Z277; M1, M12, M13, M18) | 31 | 31 | soft |
| Levenshulme (Z278; M14) | 30 | 30 | soft |
| Manchester City (Z286; M4) | 28 | 28 | soft |
| Moston (Z281; M40) | 31 | 31 | soft |
| Newton Heath (Z280; M11) | 32 | 32 | soft |
| Northern Moor (Z300; M23) | 27 | 27 | soft |
| Old Trafford (Z288; M15) | 30 | 30 | soft |
| Sharston (Z303; M22) | 27 | 27 | soft |
Manchester is supplied by United Utilities, which reports water quality for each postcode water supply zone. The median across its 12 supply zones is 29.9 mg/L CaCO₃ (range 26.9 to 31.9 mg/L), so it depends on your street's zone. A figure this low points to a soft, largely surface-water supply; limescale is minimal at this level, so kettles and heaters stay largely clear and a softener would add little.
UK suppliers report mg/L CaCO₃ and often Clark degrees (1 °Clark = 14.25 mg/L).
Water data
| Total hardness | 30 mg/L |
|---|---|
| Calcium (mg/L) | 10.3 |
| Magnesium (mg/L) | 1.35 |
| Utility | United Utilities |
How Manchester compares
- Tap water in Manchester is 84 % softer than the median of the 471 cities we track in the United Kingdom (185 mg/L).
- By hardness it ranks 434 of 471 in the United Kingdom (1 = hardest); 8 % of these cities have softer water.
- Nearest city with clearly softer water: Barnoldswick, 49 km away (17 mg/L).
- Nearest city with clearly harder water: Swinton, 8 km away (267 mg/L).
Ranking of the hardest and softest water in the United Kingdom →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Manchester
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 2 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
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 Manchester water hard or soft?
It is soft: 30 mg/L as CaCO₃ (1.7 gpg, 1.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Manchester 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 Manchester water?
1.7 gpg, equal to 1.7 °dH, 3 °fH or 30 mg/L calcium carbonate.
What dishwasher salt setting should I use in Manchester?
For 30 mg/L (1.7 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Manchester?
No. With soft water a softener adds nothing.
Source
Source: United Utilities - Check your water quality (postcode water supply zone report, rolling 12 months) (2026). Method: figure published by the water supplier. United Utilities - Check your water quality (postcode water supply zone report, rolling 12 months) · Outdated figure? Tell us