Tap water in LN9, East LindseySafe to drink.Very hard.
Supplied by Anglian Water. 294 samples, 18 substances, latest on 19 December 2024. Everything is inside the legal limit, and nothing comes close to it.
9.4 / 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 236 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 LN9 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.
Iron came closest to a limit, at 21% of it. 16 of 16 substances used under a quarter of theirs.
- Iron21%
- Trihalomethanes21%
- Fluoride19%
- Nitrate15%
- Nickel8%
- Aluminium6%
- Manganese6%
- Nitrite6%
- Turbidity5%
- Copper2%
- Lead2%
- Arsenic2%
- Selenium2%
- Antimony2%
- Chromium2%
- Cadmium<1%
- Coliform Bacteria none found
- E. coli none found
All 18 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| Copper | 0.04 mg/L | 2 mg/L | 2% |
| Nickel | 0.00151 mg/L | 0.02 mg/L | 8% |
| Lead | 0.00018 mg/L | 0.01 mg/L | 2% |
| Coliform Bacteria | 0 count/100ml | Must be zero | None found |
| E. coli | 0 count/100ml | Must be zero | None found |
| Turbidity | 0.21 NTU | 4 NTU | 5% |
| Aluminium | 0.012 mg/L | 0.2 mg/L | 6% |
| Iron | 0.042 mg/L | 0.2 mg/L | 21% |
| Manganese | 0.003 mg/L | 0.05 mg/L | 6% |
| Nitrate | 7.52 mg/L | 50 mg/L | 15% |
| Fluoride | 0.28 mg/L | 1.5 mg/L | 19% |
| Arsenic | 0.00018 mg/L | 0.01 mg/L | 2% |
| Cadmium | 0.00002 mg/L | 0.005 mg/L | <1% |
| Chromium | 0.00076 mg/L | 0.05 mg/L | 2% |
| Antimony | 0.00008 mg/L | 0.005 mg/L | 2% |
| Selenium | 0.00072 mg/L | 0.04 mg/L | 2% |
| Trihalomethanes | 0.0209 mg/L | 0.1 mg/L | 21% |
| Nitrite | 0.03 mg/L | 0.5 mg/L | 6% |
236mg of limescale minerals in every litre
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 LN9
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Your river is the Upper Bain, rated moderate
The Environment Agency rated the Upper Bain as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by fish and water plants and algae. 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
LN9 in short
Tap water in LN9 (East Lindsey) is supplied by Anglian Water in the East Lindsey Central zone and scores 9.4 out of 10, against an England and Wales average of 9.0. None of the 18 tested substances came close to a limit. The latest sample is from 19 December 2024.
- 8th cleanest of 9 areas tested in East Lindsey1 area in East Lindsey scored lower. The best is LN11 on 9.6.
- Hard water at 236 mg/LHard starts at 180 mg/L, the point where a softener begins to pay for itself. Limescale will build up in LN9. How hardness is measured
- Nothing tested came within 40% of its legal limitThe highest was Iron at 21% of the 0.2 mg/L maximum. See every reading
Questions about LN9 water
Is LN9 tap water safe to drink?
Based on the latest tests, LN9 (East Lindsey) water scores 9.4/10, which is safe. 0 of 18 tested contaminants exceeded recommended levels. Water is supplied by Anglian Water.
What contaminants are in LN9 water?
We tested 18 contaminants in LN9 water. None exceeded recommended safe levels.
Who supplies water in LN9?
LN9 (East Lindsey) is supplied by Anglian Water. You can view their full profile and compliance data on our supplier page.
Is LN9 water hard or soft?
Water in LN9 (East Lindsey) has a hardness of 236 mg/L CaCO3, which is classified as hard. Hard water can cause limescale buildup. A water softener or filter jug may help.
Should I use a water filter in LN9?
LN9 water scored 9.4/10 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 LN9 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for LN9, 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 river near LN9?
The Environment Agency rated the Upper Bain as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by fish and water plants and algae. 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 river, not of tap water in LN9, 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
How to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map
River and groundwater readings near LN9
Environment Agency samples from rivers, groundwater and reservoirs nearby. Not your tap water. For scale they are shown against drinking water limits; rivers are judged against much stricter environmental standards, and on those every river in England fails for chemicals.
| Substance | Reading | Drinking water limit |
|---|---|---|
| Turbidity | 4.5 NTU | 4 NTU |
| pH | 8.05 pH | None |
| Temperature | 12.8 °C | None |
| Conductivity | 560 µS/cm | None |
| Nitrate | 5.6 mg/L | 50 mg/L |
| Nitrite | 0.023 mg/L | 0.5 mg/L |
| Phosphate | 0.011 mg/L | None |
| Dissolved Oxygen | 9.95 mg/L | None |
| Ammonia | 0.088 mg/L | 0.5 mg/L |
| Chromium | 0.0016 mg/L | 0.05 mg/L |
| Copper | 0.00059 mg/L | 2 mg/L |
| Zinc | 0.0063 mg/L | None |
| Nickel | 0.0016 mg/L | 0.02 mg/L |
Get alerts for your area
We'll email you when water quality data changes for LN9.