North Lincolnshire, England
North Lincolnshire
Your water is safe
We checked 8 things and found nothing to worry about
ExcellentYour water is safe
We checked 8 things and found nothing to worry about
ExcellentBased on environmental water monitoring, your water in DN21 (North Lincolnshire) is supplied by Unknown. Based on the latest data (last sampled 2020-01-20), 8 things were tested with 0 exceeding recommended levels. The overall water quality score for DN21 is 9.6/10.
Last sampled 2020-01-20 · Tap water tests not yet available for Unknown
This data is over 6 years old. The Environment Agency hasn't sampled near DN21 recently. Scores reflect the most recent available data.
Here’s what government tests found in water near you.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Ammonia | 0.00147 mg/L | 0.5 mg/L | — | Safe |
| Nitrate | 9.07 mg/L | 50 mg/L | 50 mg/L | Safe |
| Phosphate | 0.098 mg/L | — | — | Safe |
| pH | 7.93 pH | — | — | Safe |
| Temperature | 3.7 °C | — | — | Safe |
| Conductivity | 900 µS/cm | — | — | Safe |
Source: Environment Agency
General-purpose filters for common UK tap water concerns.

Our pick for DN21
BRITA Marella XL + MAXTRA PRO
Jug Filter · TUV SUD
A solid all-round filter for DN21. Removes Chlorine, Lead, Copper and more. No installation needed.
£25
Recommendations matched to your area's water data, not sponsorship. We may earn a commission at no extra cost to you. Affiliate disclosure · Full filter guide
Shower filters
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Test your water
Confirm exactly what's in your pipes
Rivers, groundwater and reservoirs near DN21. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Ammonia | 0.00147 mg/L | 0.5 mg/L | — | Safe |
| Nitrate | 9.07 mg/L | 50 mg/L | 50 mg/L | Safe |
| Phosphate | 0.098 mg/L | — | — | Safe |
| pH | 7.93 pH | — | — | Safe |
| Temperature | 3.7 °C | — | — | Safe |
| Conductivity | 900 µS/cm | — | — | Safe |
Source: Environment Agency
We'll email you when water quality data changes for DN21.