Tap water in NR31, Great YarmouthToo few tap tests to call it.Very hard.
Supplied by Anglian Water. 10 substances, latest on 10 September 2026. These are river and groundwater samples near NR31, not tests of treated tap water, so treat the score as a rough guide.
9.3 / 10
The tank is as full as the score. The specks are the minerals that make water hard.
What to do about it
Hard water: compare softener quotes
At 348 mg/L a softener is the only thing that stops limescale. Filters do not soften water.
It pays for itself in most homes at this hardness, through a boiler that stays efficient and appliances that last.
ZeroWater 12-Cup Ready-Pour
£40typical price
Households concerned about PFAS and heavy metals
Waterdrop 10UA Under Sink
£70typical price
High-volume under-sink filtration without RO complexity
We earn a commission if you buy through these links, at no extra cost to you. It never changes which product we put first. How we make money
What's in a glass of NR31 water
Every bubble is a substance the lab measured. The higher it floats, the closer it came to its legal limit, the dashed line at the top.
Ammonia came closest to a limit, at 28% of it. 4 of 5 substances used under a quarter of theirs.
- Ammonia28%
- Nickel5%
- Nitrite3%
- Nitrate3%
- Lead<1%
- pH 7.77 pH
- Conductivity 756 µS/cm
- Phosphate 0.37 mg/L
- Temperature 7.8 °C
- Dissolved Oxygen 15.5 mg/L
All 10 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| pH | 7.77 pH | No legal limit | – |
| Conductivity | 756 µS/cm | No legal limit | – |
| Phosphate | 0.37 mg/L | No legal limit | – |
| Nitrate | 1.6 mg/L | 50 mg/L | 3% |
| Ammonia | 0.14 mg/L | 0.5 mg/L | 28% |
| Temperature | 7.8 °C | No legal limit | – |
| Dissolved Oxygen | 15.5 mg/L | No legal limit | – |
| Lead | 0.000055 mg/L | 0.01 mg/L | <1% |
| Nickel | 0.000959 mg/L | 0.02 mg/L | 5% |
| Nitrite | 0.0167 mg/L | 0.5 mg/L | 3% |
348mg of limescale minerals in every litre, typical for the NR area. NR31 has no reading of its own.
This is the water that furs up kettles
Very hard on the UK scale. It is fine to drink. It is hard on boilers, showers, skin and anything that heats water, and a jug or tap filter will not change that.
Softener quotes for NR31
Leave your details and we will email you when we can match you with installers who cover NR31. No obligation.
Request a free assessment and we'll come back to you with local installer options for your area.
100%
free, no obligation
shared only with your consent
Your estuary is the Bure & Waveney & Yare & Lothing, rated moderate
The Environment Agency rated the Bure & Waveney & Yare & Lothing as moderate for ecological health in its 2025 assessment, meaning the estuary is noticeably changed by pollution or engineering. It is held back by seagrass and saltmarsh, insects and other small river life and nitrogen. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants.
None of this is a test of your tap water. Environment Agency record · River health across England
NR31 in short
Tap water in NR31 (Great Yarmouth) is supplied by Anglian Water in the Great Yarmouth Central zone and scores 9.3 out of 10, against an England and Wales average of 9.0. None of the 10 tested substances came close to a limit. The latest sample is from 10 September 2026.
- The cleanest tap water of the 3 areas tested in Great YarmouthNR31 scores 9.3 out of 10, ahead of NR29 in second place on 9.
- Among the hardest water in the country at 348 mg/LVery hard starts at 250 mg/L. At this level kettles scale up within weeks and a softener is a normal purchase across the NR postcode area. How hardness is measured
- Nothing tested came within 40% of its legal limitThe highest was Ammonia at 28% of the 0.5 mg/L maximum. See every reading
Questions about NR31 water
Is NR31 tap water safe to drink?
Based on the latest tests, NR31 (Great Yarmouth) water scores 9.3/10, which is safe. 0 of 10 tested contaminants exceeded recommended levels. Water is supplied by Anglian Water.
What contaminants are in NR31 water?
We tested 10 contaminants in NR31 water. None exceeded recommended safe levels.
Who supplies water in NR31?
NR31 (Great Yarmouth) is supplied by Anglian Water. You can view their full profile and compliance data on our supplier page.
Is NR31 water hard or soft?
No hardness reading has been published for NR31 itself. Across the NR postcode area the typical value is 348 mg/L CaCO3, which is classified as very hard. Hard water can cause limescale buildup. A water softener or filter jug may help.
Should I use a water filter in NR31?
NR31 water scored 9.3/10 with no contaminants above recommended levels. A filter is optional but can improve taste, especially if you notice a chlorine flavour. See our filter recommendations for your area.
Are there PFAS forever chemicals in NR31 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for NR31, and the Environment Agency has no PFAS detections in rivers or groundwater within 10 km of it. That reflects where sampling has happened as much as the water itself.
How clean is the estuary near NR31?
The Environment Agency rated the Bure & Waveney & Yare & Lothing as moderate for ecological health in its 2025 assessment, meaning the estuary is noticeably changed by pollution or engineering. It is held back by seagrass and saltmarsh, insects and other small river life and nitrogen. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants. This is a rating of the estuary, not of tap water in NR31, which is treated before it reaches homes.
Keep reading
- Best Water Softener UKHarvey, Kinetico, BWT, Monarch and Water2Buy compared, with real costs
- Do I Need a Water Softener?The hardness bands, the symptoms, and a postcode check
- UK Water Hardness MapIs your water hard or soft, and does it matter?
- Is UK Tap Water Safe?Everything you need to know about tap water safety in the UK
- Do I need a water softener?The hardness bands, the symptoms, and when the answer is no
- Best water softener UKHarvey, Kinetico, BWT, Monarch and Water2Buy compared
- Water softener costUnit, fitting and salt, and how long the payback takes
- Installation explainedWhere it goes, the bypass tap, the drain, DIY or plumber
- Harvey vs KineticoThe two premium twin-cylinder brands, side by side
- Softener salt guideTablet, block or granular, and how much you get through
- Salt-free softenersConditioners and electronic descalers, honestly assessed
Boiling water taps and hard waterHow to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map
Get alerts for your area
We'll email you when water quality data changes for NR31.