Is S40 tap water safe to drink?

Based on the latest tests, S40 (Chesterfield) water scores 7.1/10, which is safe. 2 of 14 tested contaminants exceeded recommended levels. Water is supplied by Unknown.

What contaminants are in S40 water?

We tested 14 contaminants in S40 water. 2 were flagged, including Lead, Iron.

Who supplies water in S40?

S40 (Chesterfield) is supplied by Unknown. You can view their full profile and compliance data on our supplier page.

Is S40 water hard or soft?

No hardness reading has been published for S40 itself. Across the S postcode area the typical value is 95 mg/L CaCO3, which is classified as moderately soft. This is a moderate hardness level.

Should I use a water filter in S40?

With 2 contaminants above recommended levels in S40, a water filter could help. A filter jug or under-sink filter can reduce most common contaminants. See our filter recommendations for your area.

Are there PFAS forever chemicals in S40 water?

No PFAS (forever chemicals) have been detected in S40 based on available monitoring data. PFAS are tested at environmental monitoring sites near your postcode.

Chesterfield, England

Your water in S40

Chesterfield

Your water is within limits, with one thing to check

We checked 14 things and found 2 worth knowing about

Good

Your water is within limits, with one thing to check

We checked 14 things and found 2 worth knowing about

Good

Unknown

Your water company

Water hardness: 95 mg/L (moderately soft) — typical for the S area, not measured in S40

Moderate hardness — unlikely to cause issues

Tap water in S40 (Chesterfield, Chesterfield) is supplied by Unknown and scored 7.1 out of 10 for safety based on 14 tested parameters. 2 contaminants exceeded recommended safe levels: Lead, Iron. Data is from samples last taken 2020-03-03, sourced from the Environment Agency Water Quality Archive.

Environmental monitoringHow we score

Last sampled 2020-03-03 · Tap water tests not yet available for Unknown

This data is over 6 years old. The Environment Agency hasn't sampled near S40 recently. Scores reflect the most recent available data.

Filter match · 2 flagged in S40

Matched to 1 of 2 concerns flagged in S40

Lead was flagged in S40. This product lists reduction for Lead. It does not cover 1 other flagged concern in this report. Check the removal list below and its certification before relying on it for health concerns.

Our pick for S40

Doulton HIP Ultracarb

Under-Sink Filter · NSF/ANSI 42, NSF/ANSI 53

Matched to your report: Lead
Also listed to reduce: Chlorine, Bacteria, Microplastics, Copper
What it won't do: Does not remove PFAS or fluoride

Typical price

£120

approx. · retailer sets the final price

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Affiliate link: we may earn a commission at no extra cost to you. How recommendations are funded

Compare 2 alternatives

Waterdrop G3P600 Reverse Osmosis
Reverse Osmosis · matched to Lead
£550
typical
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BRITA Marella XL + MAXTRA PRO
Jug Filter · matched to Lead
£25
typical
View

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

What we found

Here’s what government tests found in water near you.

Substance	Found	Safe Level	WHO Safe Level	Status
Lead	0.0113 mg/L	0.01 mg/L	0.01 mg/L	Over limit
Iron	0.308 mg/L	0.2 mg/L	0.3 mg/L	Over limit

LeadOver limit

Found

0.0113 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

100% of safe level

IronOver limit

Found

0.308 mg/L

Safe level

0.2 mg/L

WHO

0.3 mg/L

100% of safe level

Source: Environment Agency

Shower filters

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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

Lead Pipes in the UK

How to check for lead pipes and reduce exposure

Water Filter Recommendations

Find the right filter for your water quality issues

Environmental water nearby

Rivers, groundwater and reservoirs near S40. This is environmental monitoring — not your tap water.

Substance	Found	Safe Level	WHO Safe Level	Status
Lead	0.0113 mg/L	0.01 mg/L	0.01 mg/L	Over limit
Iron	0.308 mg/L	0.2 mg/L	0.3 mg/L	Over limit

LeadOver limit

Found

0.0113 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

100% of safe level

IronOver limit

Found

0.308 mg/L

Safe level

0.2 mg/L

WHO

0.3 mg/L

100% of safe level

Source: Environment Agency

Learn more

Lead in water How to test your water Best water filtersWater in ChesterfieldUK water rankings

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Compare nearby

S43Chesterfield9.5 S41Chesterfield7.1 S42North East Derbyshire9.2

Your water supplier

Unknown

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Fetching the latest data for this area

What we found

Here’s what government tests found in water near you.

Substance	Found	Safe Level	WHO Safe Level	Status
Lead	0.0113 mg/L	0.01 mg/L	0.01 mg/L	Over limit
Iron	0.308 mg/L	0.2 mg/L	0.3 mg/L	Over limit

LeadOver limit

Found

0.0113 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

100% of safe level

IronOver limit

Found

0.308 mg/L

Safe level

0.2 mg/L

WHO

0.3 mg/L

100% of safe level

Source: Environment Agency

Environmental water nearby

Rivers, groundwater and reservoirs near S40. This is environmental monitoring — not your tap water.

Substance	Found	Safe Level	WHO Safe Level	Status
Lead	0.0113 mg/L	0.01 mg/L	0.01 mg/L	Over limit
Iron	0.308 mg/L	0.2 mg/L	0.3 mg/L	Over limit

LeadOver limit

Found

0.0113 mg/L

Safe level

0.01 mg/L

WHO

0.01 mg/L

100% of safe level

IronOver limit

Found

0.308 mg/L

Safe level

0.2 mg/L

WHO

0.3 mg/L

100% of safe level

Source: Environment Agency