Is YO42 tap water safe to drink?

Based on the latest tests, YO42 (East Riding of Yorkshire) water scores 8.9/10, which is safe. 2 of 24 tested contaminants exceeded recommended levels. Water is supplied by Yorkshire Water.

What contaminants are in YO42 water?

We tested 24 contaminants in YO42 water. 2 were flagged, including Nitrite, Nitrate.

Who supplies water in YO42?

YO42 (East Riding of Yorkshire) is supplied by Yorkshire Water. You can view their full profile and compliance data on our supplier page.

Is YO42 water hard or soft?

Water in YO42 (East Riding of Yorkshire) has a hardness of 302 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 YO42?

With 2 contaminants above recommended levels in YO42, 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 YO42 water?

No PFAS (forever chemicals) have been detected in YO42 based on available monitoring data. PFAS are tested at environmental monitoring sites near your postcode.

East Riding of Yorkshire, England

Your water in YO42

East Riding of Yorkshire

Your water is safe

We checked 24 things and found 2 worth knowing about

Good

Your water is safe

We checked 24 things and found 2 worth knowing about

Good

Yorkshire Water

Your water company

Water hardness: 302 mg/L (very hard)

Hard water — may cause limescale buildup in kettles and pipes

Hard water is costing your home money

Your water is very hard (302 mg/L) — find out if a softener is worth it

Get free quotes →

Tap water in YO42 (East Riding of Yorkshire, East Riding of Yorkshire) is supplied by Yorkshire Water and scored 8.9 out of 10 for safety based on 24 tested parameters. 2 contaminants exceeded recommended safe levels: Nitrite, Nitrate. Data is from 302 samples collected up to 2026-05-19, sourced from Yorkshire Water via the Stream Water Data Portal.

Drinking water testsHow we score

Last sampled 2026-05-19 · 302 samples

What’s in your tap water

Results from drinking water tests in East Riding of Yorkshire.

Substance	Found	Safe Level	WHO Safe Level	Status
Nitrite	0.89 mg/L	0.5 mg/L	3 mg/L	Over limit
Nitrate	44 mg/L	50 mg/L	50 mg/L	Watch

NitriteOver limit

Found

0.89 mg/L

Safe level

0.5 mg/L

WHO

3 mg/L

100% of safe level

NitrateWatch

Found

44 mg/L

Safe level

50 mg/L

WHO

50 mg/L

89% of safe level

Source: Stream Water Data Portal

What removes these from your water

2 contaminants flagged in YO42. These filters are matched to what was found in your water.

Our pick for YO42

Waterdrop G3P600 Reverse Osmosis

Reverse Osmosis · NSF/ANSI 58, NSF/ANSI 372

The Waterdrop G3P600 Reverse Osmosis is certified to remove Nitrate, which was flagged in YO42. Fits under your kitchen sink for filtered water on tap.

Removes from your water

Nitrate

Check price & reviews

£399

4.6/5

2 more options

Jug Filter

ZeroWater 12-Cup Ready-Pour

Removes Nitrate

£40

4.3

Reverse Osmosis

Frizzlife PD600 Under Sink RO

Removes Nitrate

£329

4.5

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

Hard water is costing your home money

Limescale reduces boiler efficiency and shortens appliance life. Based on your water hardness (302 mg/L — very hard), a softener could save you £200+/year.

Get a free assessment — we'll tell you if it's worth it and connect you with trusted local installers.

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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

Water Hardness Checker

Check your water hardness and what it means for your home

Water Filter Recommendations

Find the right filter for your water quality issues

Environmental water nearby

Rivers, groundwater and reservoirs near YO42. This is environmental monitoring — not your tap water.

Substance	Found	Safe Level	WHO Safe Level	Status
pH	8.38 pH	—	—	Safe
Temperature	5.8 °C	—	—	Safe
Conductivity	710 µS/cm	—	—	Safe
Ammonia	0.049 mg/L	0.5 mg/L	—	Safe
Nitrate	14 mg/L	50 mg/L	50 mg/L	Safe
Nitrite	0.034 mg/L	0.5 mg/L	3 mg/L	Safe

pHSafe

Found

8.38 pH

Safe level

—

WHO

—

Informational — no set limit

TemperatureSafe

Found

5.8 °C

Safe level

—

WHO

—

Informational — no set limit

ConductivitySafe

Found

710 µS/cm

Safe level

—

WHO

—

Informational — no set limit

AmmoniaSafe

Found

0.049 mg/L

Safe level

0.5 mg/L

WHO

—

10% of safe level

NitrateSafe

Found

14 mg/L

Safe level

50 mg/L

WHO

50 mg/L

27% of safe level

NitriteSafe

Found

0.034 mg/L

Safe level

0.5 mg/L

WHO

3 mg/L

7% of safe level

Source: Environment Agency

Learn more

Nitrate levels How to test your water Best water filters Water in East Riding of Yorkshire UK water rankings

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Compare nearby

HU18East Riding of Yorkshire8.8 HU15East Riding of Yorkshire8.9 HU14East Riding of Yorkshire9.6 HU17East Riding of Yorkshire8.9 HU16East Riding of Yorkshire9.4 HU19East Riding of Yorkshire9.3 HU20East Riding of Yorkshire8.8 YO16East Riding of Yorkshire9.8 HU10East Riding of Yorkshire9.3 YO15East Riding of Yorkshire9.3

Your water supplier

Yorkshire Water

Loading water report

Fetching the latest data for this area

What’s in your tap water

Results from drinking water tests in East Riding of Yorkshire.

Substance	Found	Safe Level	WHO Safe Level	Status
Nitrite	0.89 mg/L	0.5 mg/L	3 mg/L	Over limit
Nitrate	44 mg/L	50 mg/L	50 mg/L	Watch

NitriteOver limit

Found

0.89 mg/L

Safe level

0.5 mg/L

WHO

3 mg/L

100% of safe level

NitrateWatch

Found

44 mg/L

Safe level

50 mg/L

WHO

50 mg/L

89% of safe level

Source: Stream Water Data Portal

What removes these from your water

2 contaminants flagged in YO42. These filters are matched to what was found in your water.

Our pick for YO42

Waterdrop G3P600 Reverse Osmosis

Reverse Osmosis · NSF/ANSI 58, NSF/ANSI 372

The Waterdrop G3P600 Reverse Osmosis is certified to remove Nitrate, which was flagged in YO42. Fits under your kitchen sink for filtered water on tap.

Removes from your water

Nitrate

Check price & reviews

£399

4.6/5

2 more options

Jug Filter

ZeroWater 12-Cup Ready-Pour

Removes Nitrate

£40

4.3

Reverse Osmosis

Frizzlife PD600 Under Sink RO

Removes Nitrate

£329

4.5

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 YO42. This is environmental monitoring — not your tap water.

Substance	Found	Safe Level	WHO Safe Level	Status
pH	8.38 pH	—	—	Safe
Temperature	5.8 °C	—	—	Safe
Conductivity	710 µS/cm	—	—	Safe
Ammonia	0.049 mg/L	0.5 mg/L	—	Safe
Nitrate	14 mg/L	50 mg/L	50 mg/L	Safe
Nitrite	0.034 mg/L	0.5 mg/L	3 mg/L	Safe

pHSafe

Found

8.38 pH

Safe level

—

WHO

—

Informational — no set limit

TemperatureSafe

Found

5.8 °C

Safe level

—

WHO

—

Informational — no set limit

ConductivitySafe

Found

710 µS/cm

Safe level

—

WHO

—

Informational — no set limit

AmmoniaSafe

Found

0.049 mg/L

Safe level

0.5 mg/L

WHO

—

10% of safe level

NitrateSafe

Found

14 mg/L

Safe level

50 mg/L

WHO

50 mg/L

27% of safe level

NitriteSafe

Found

0.034 mg/L

Safe level

0.5 mg/L

WHO

3 mg/L

7% of safe level

Source: Environment Agency