Tap water in DN19, North LincolnshireSafe to drink.Very hard.
Supplied by Anglian Water. 237 samples, 18 substances, latest on 4 December 2024. Everything is inside the legal limit, and nothing comes close to it.
8.9 / 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 293 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
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What's in a glass of DN19 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.
Nitrate came closest to a limit, at 68% of it. 14 of 16 substances used under a quarter of theirs.
- Nitrate68%
- Fluoride66%
- Trihalomethanes19%
- Iron11%
- Nickel8%
- Nitrite6%
- Aluminium6%
- Manganese6%
- Turbidity5%
- Arsenic2%
- Selenium2%
- Lead2%
- Antimony2%
- Chromium2%
- Copper2%
- Cadmium<1%
- Coliform Bacteria none found
- E. coli none found
All 18 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| Chromium | 0.00076 mg/L | 0.05 mg/L | 2% |
| Nickel | 0.00151 mg/L | 0.02 mg/L | 8% |
| Lead | 0.00016 mg/L | 0.01 mg/L | 2% |
| Antimony | 0.00008 mg/L | 0.005 mg/L | 2% |
| Selenium | 0.00072 mg/L | 0.04 mg/L | 2% |
| Coliform Bacteria | 0 count/100ml | Must be zero | None found |
| E. coli | 0 count/100ml | Must be zero | None found |
| Trihalomethanes | 0.0194 mg/L | 0.1 mg/L | 19% |
| Turbidity | 0.21 NTU | 4 NTU | 5% |
| Nitrate | 34 mg/L | 50 mg/L | 68% |
| Nitrite | 0.03 mg/L | 0.5 mg/L | 6% |
| Aluminium | 0.012 mg/L | 0.2 mg/L | 6% |
| Iron | 0.021 mg/L | 0.2 mg/L | 11% |
| Manganese | 0.003 mg/L | 0.05 mg/L | 6% |
| Copper | 0.03 mg/L | 2 mg/L | 2% |
| Fluoride | 0.99 mg/L | 1.5 mg/L | 66% |
| Arsenic | 0.00024 mg/L | 0.01 mg/L | 2% |
| Cadmium | 0.00002 mg/L | 0.005 mg/L | <1% |
293mg 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 DN19
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Your river is the Barrow Beck, rated bad
The Environment Agency rated the Barrow Beck as bad for ecological health in its 2025 assessment, meaning the river is severely damaged, with most of the expected wildlife missing. It is held back by insects and other small river life. 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. Its ecological rating has dropped since the previous assessment.
None of this is a test of your tap water. Environment Agency record · River health across England
151
forever-chemical detections in nearby rivers and groundwater
At 3 sites. The highest was 6:2 FTSA at 0.13 µg/L, at Barrow Crossroads B/H, 3.6 km away, in April 2026. These are river and borehole samples, not tests of your tap water.
Every PFAS sample around Hull · Which filters remove PFAS · PFAS explained
DN19 in short
Tap water in DN19 (North Lincolnshire) is supplied by Anglian Water in the North Lincolnshire Central zone and scores 8.9 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 4 December 2024.
- Nitrate is the reading closest to its limit, at 68% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
- Very hard water at 293 mg/LThe threshold for very hard is 250 mg/L. Expect visible limescale on taps and in kettles in DN19. How hardness is measured
- 4th cleanest of 9 areas tested in North LincolnshireSquarely mid-table for North Lincolnshire, between DN9 on 9.3 and DN38 on 8.3.
Questions about DN19 water
Is DN19 tap water safe to drink?
Based on the latest tests, DN19 (North Lincolnshire) water scores 8.9/10, which is safe. 0 of 18 tested contaminants exceeded recommended levels. Water is supplied by Anglian Water.
What contaminants are in DN19 water?
We tested 18 contaminants in DN19 water. None exceeded recommended safe levels. PFAS (forever chemicals) were also measured in rivers and groundwater within 10 km, though not in the tap-water tests themselves.
Who supplies water in DN19?
DN19 (North Lincolnshire) is supplied by Anglian Water. You can view their full profile and compliance data on our supplier page.
Is DN19 water hard or soft?
Water in DN19 (North Lincolnshire) has a hardness of 293 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 DN19?
DN19 water scored 8.9/10 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 DN19 water?
The tap-water tests we hold for DN19 do not include a PFAS result. Environment Agency monitoring found PFAS in 151 river and groundwater samples from 3 sites within 10 km of DN19, the highest being 6:2 FTSA at 0.13 µg/L about 3.6 km away. These are environmental samples, not tests of tap water. The UK currently has no legal limit for PFAS in drinking water; the Drinking Water Inspectorate uses a 0.1 µg/L guideline for individual compounds. Reverse osmosis filters can reduce PFAS levels.
How clean is the river near DN19?
The Environment Agency rated the Barrow Beck as bad for ecological health in its 2025 assessment, meaning the river is severely damaged, with most of the expected wildlife missing. It is held back by insects and other small river life. 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. Its ecological rating has dropped since the previous assessment. This is a rating of the river, not of tap water in DN19, which is treated before it reaches homes.
Keep reading
- Best Filter for PFAS RemovalThe filters with independent certification to remove forever chemicals
- PFAS Forever ChemicalsWhat PFAS are and how to reduce your exposure at home
- 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?
- 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
PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map
River and groundwater readings near DN19
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.
Get alerts for your area
We'll email you when water quality data changes for DN19.