Is BN45 tap water safe to drink?

Based on the latest tests, BN45 (Mid Sussex) water scores 9.4/10, which is safe. 0 of 18 tested contaminants exceeded recommended levels. Water is supplied by Southern Water.

What contaminants are in BN45 water?

We tested 18 contaminants in BN45 water. None exceeded recommended safe levels.

Who supplies water in BN45?

BN45 (Mid Sussex) is supplied by Southern Water. You can view their full profile and compliance data on our supplier page.

Should I use a water filter in BN45?

BN45 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 BN45 water?

No PFAS (forever chemicals) have been detected in BN45 based on available monitoring data. PFAS are tested at environmental monitoring sites near your postcode.

Mid Sussex, England

Your water in BN45

Mid Sussex

Your water is safe

We checked 18 things and found nothing to worry about

Excellent

Your water is safe

We checked 18 things and found nothing to worry about

Excellent

Southern Water

Your water company

Tap water in BN45 (Mid Sussex, Mid Sussex) is supplied by Southern Water and scored 9.4 out of 10 for safety based on 18 tested parameters. No contaminants exceeded recommended safe levels. Data is from 92 samples collected up to 2025-12-02, sourced from Southern Water via the Stream Water Data Portal.

Drinking water testsHow we score

Last sampled 2025-12-02 · 92 samples

What’s in your tap water

Results from drinking water tests in Mid Sussex.

Substance	Found	Safe Level	WHO Safe Level	Status
Nitrate	31 mg/L	50 mg/L	50 mg/L	Safe
Nitrite	0.003 mg/L	0.5 mg/L	3 mg/L	Safe
Copper	0.119 mg/L	2 mg/L	2 mg/L	Safe
Arsenic	0.00011 mg/L	0.01 mg/L	0.01 mg/L	Safe
Cadmium	0.000011 mg/L	0.005 mg/L	0.003 mg/L	Safe
Chromium	0.00013 mg/L	0.05 mg/L	0.05 mg/L	Safe

NitrateSafe

Found

31 mg/L

Safe level

50 mg/L

WHO

50 mg/L

61% of safe level

NitriteSafe

Found

0.003 mg/L

Safe level

0.5 mg/L

WHO

3 mg/L

1% of safe level

CopperSafe

Found

0.119 mg/L

Safe level

2 mg/L

WHO

2 mg/L

6% of safe level

ArsenicSafe

Found

0.00011 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

1% of safe level

CadmiumSafe

Found

0.000011 mg/L

Safe level

0.005 mg/L

WHO

0.003 mg/L

0% of safe level

ChromiumSafe

Found

0.00013 mg/L

Safe level

0.05 mg/L

WHO

0.05 mg/L

0% of safe level

Source: Stream Water Data Portal

Filters for BN45

General-purpose filters for common UK tap water concerns.

Our pick for BN45

BRITA Marella XL + MAXTRA PRO

Jug Filter · TUV SUD

A solid all-round filter for BN45. Removes Chlorine, Lead, Copper and more. No installation needed.

Check price & reviews

£25

4.5/5

2 more options

Jug Filter

ZeroWater 12-Cup Ready-Pour

£40

4.3

Jug Filter

Aqua Optima Liscia + Evolve+

£20

4.4

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

Remove chlorine for better skin and hair

Test your water

Confirm exactly what's in your pipes

Related guides

Learn more about the water quality issues relevant to this area.

Is UK Tap Water Safe?

Everything you need to know about tap water safety in the UK

Environmental water nearby

Rivers, groundwater and reservoirs near BN45. This is environmental monitoring — not your tap water.

Substance	Found	Safe Level	WHO Safe Level	Status
Lead	0.0107 mg/L	0.01 mg/L	0.01 mg/L	Over limit

LeadOver limit

Found

0.0107 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

100% of safe level

Source: Environment Agency

Learn more

How to test your water Best water filters Water in Mid Sussex UK water rankings

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BN6Lewes9.6

Your water supplier

Southern Water

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Fetching the latest data for this area

What’s in your tap water

Results from drinking water tests in Mid Sussex.

Substance	Found	Safe Level	WHO Safe Level	Status
Nitrate	31 mg/L	50 mg/L	50 mg/L	Safe
Nitrite	0.003 mg/L	0.5 mg/L	3 mg/L	Safe
Copper	0.119 mg/L	2 mg/L	2 mg/L	Safe
Arsenic	0.00011 mg/L	0.01 mg/L	0.01 mg/L	Safe
Cadmium	0.000011 mg/L	0.005 mg/L	0.003 mg/L	Safe
Chromium	0.00013 mg/L	0.05 mg/L	0.05 mg/L	Safe

NitrateSafe

Found

31 mg/L

Safe level

50 mg/L

WHO

50 mg/L

61% of safe level

NitriteSafe

Found

0.003 mg/L

Safe level

0.5 mg/L

WHO

3 mg/L

1% of safe level

CopperSafe

Found

0.119 mg/L

Safe level

2 mg/L

WHO

2 mg/L

6% of safe level

ArsenicSafe

Found

0.00011 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

1% of safe level

CadmiumSafe

Found

0.000011 mg/L

Safe level

0.005 mg/L

WHO

0.003 mg/L

0% of safe level

ChromiumSafe

Found

0.00013 mg/L

Safe level

0.05 mg/L

WHO

0.05 mg/L

0% of safe level

Source: Stream Water Data Portal

Filters for BN45

General-purpose filters for common UK tap water concerns.

Our pick for BN45

BRITA Marella XL + MAXTRA PRO

Jug Filter · TUV SUD

A solid all-round filter for BN45. Removes Chlorine, Lead, Copper and more. No installation needed.

Check price & reviews

£25

4.5/5

2 more options

Jug Filter

ZeroWater 12-Cup Ready-Pour

£40

4.3

Jug Filter

Aqua Optima Liscia + Evolve+

£20

4.4

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

Environmental water nearby

Rivers, groundwater and reservoirs near BN45. This is environmental monitoring — not your tap water.

Substance	Found	Safe Level	WHO Safe Level	Status
Lead	0.0107 mg/L	0.01 mg/L	0.01 mg/L	Over limit

LeadOver limit

Found

0.0107 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

100% of safe level

Source: Environment Agency