ST1 tap water: what's in it?
Severn Trent Water: at least 40 tests failed UK drinking-water standards in 2025 (DWI, company-wide).
Some published DWI figures don't reconcile or identify a company, so we've left them out; the true number may be higher. England overall: 99.97% of tests met standards.
ST1 tap water quality report · 2026
Hardness
Slightly hard
Stoke Central (supply zone) · 1 August 2025 to 31 July 2026
Details
Stoke Central (supply zone) · 1 August 2025 to 31 July 2026
Hosepipe ban
Not available
We can't confirm the hosepipe-ban status for Severn Trent Water from the information we hold.
Details
We can't confirm the hosepipe-ban status for Severn Trent Water from the information we hold.
Storm overflows
134 overflows within 10 km of ST1 centre
1,670 spills in 2025
Details
1,670 spills in 2025
Lead pipes
66% built before 1973
Estimate, not a test. Homes in the parts of ST1 we can match to council-tax records (100% of its postcodes) whose build period is known; the share with no recorded build period isn't published for these areas. Allowing for suppressed counts: 65–66%. England and Wales: 61% (2026).
Details
Estimate, not a test. Homes in the parts of ST1 we can match to council-tax records (100% of its postcodes) whose build period is known; the share with no recorded build period isn't published for these areas. Allowing for suppressed counts: 65–66%. England and Wales: 61% (2026).
Who supplies water in ST1
Supplies 948 of 948 postcodes (100%)
Sewerage: Usually Severn Trent Water — they provide water and sewerage across most of their area. Your water bill confirms yours.
Drinking-water test record
Severn Trent Water: 948 of 948 postcodes
Severn Trent Water
Severn Trent Water, company-wide
- Regulator
- DWI
- Report year
- 2025
- Failed tests
- Not shown
- Tests
- 452,303
The regulator's published total and its company rows disagree, so we don't show a count.
| Parameter | Failed tests |
|---|---|
| Benzo[a]Pyrene (total) | Failed tests: 1 |
| E. coli (confirmed) | Failed tests: 3 |
| Iron | Failed tests: 15 |
| Lead | Failed tests: 4 |
| Manganese | Failed tests: 2 |
| Nickel | Failed tests: 6 |
| Total coliforms (confirmed) | Failed tests: 8 |
| Turbidity – indicator | Failed tests: 1 |
Source: DWI england 2025, Annex B — dated 6 July 2026, read 13 October 2026
Source: DWI england 2025, Annex A — dated 6 July 2026, read 13 October 2026
England: 99.97% of tests met standards in 2025 (DWI).
Source: DWI england 2025, national compliance — dated 6 July 2026, read 13 October 2026
How hard is the water in ST1?
71% of ST1's postcodes are in the Stoke Central supply zone (Severn Trent Water): 129 mg/l, slightly hard.
Stoke Central · Severn Trent Water (671 of 948 postcodes)
129 mg/l · 9.0 °Clark · 7.2 °dH · 12.9 °fH
Typical value.
Stoke Central (supply zone) · 1 August 2025 to 31 July 2026
Source: Severn Trent Water — dated 1 August 2025 to 31 July 2026, read 30 September 2026
6 identified supply zones in ST1
Stoke Central · Severn Trent Water (671 of 948 postcodes)
129 mg/l · 9.0 °Clark · 7.2 °dH · 12.9 °fH
Typical value.
Stoke Central (supply zone) · 1 August 2025 to 31 July 2026
Source: Severn Trent Water — dated 1 August 2025 to 31 July 2026, read 30 September 2026
Stoke South · Severn Trent Water (78 of 948 postcodes)
246 mg/l · 17.3 °Clark · 13.8 °dH · 24.6 °fH
Typical value.
Stoke South (supply zone) · 1 August 2025 to 31 July 2026
Source: Severn Trent Water — dated 1 August 2025 to 31 July 2026, read 30 September 2026
Ladderedge · Severn Trent Water (74 of 948 postcodes)
121 mg/l · 8.5 °Clark · 6.8 °dH · 12.1 °fH
Typical value.
Ladderedge (supply zone) · 1 August 2025 to 31 July 2026
Source: Severn Trent Water — dated 1 August 2025 to 31 July 2026, read 30 September 2026
Bucknall · Severn Trent Water (57 of 948 postcodes)
209 mg/l · 14.6 °Clark · 11.7 °dH · 20.9 °fH
Typical value.
Bucknall (supply zone) · 1 August 2025 to 31 July 2026
Source: Severn Trent Water — dated 1 August 2025 to 31 July 2026, read 30 September 2026
Newcastle Under Lyme · Severn Trent Water (10 of 948 postcodes)
250 mg/l · 17.5 °Clark · 14.0 °dH · 25.0 °fH
Typical value.
Newcastle Under Lyme (supply zone) · 1 August 2025 to 31 July 2026
Source: Severn Trent Water — dated 1 August 2025 to 31 July 2026, read 1 October 2026
Kidsgrove · Severn Trent Water (1 of 948 postcodes)
139 mg/l · 9.8 °Clark · 7.8 °dH · 13.9 °fH
Typical value.
Kidsgrove (supply zone) · 1 August 2025 to 31 July 2026
Source: Severn Trent Water — dated 1 August 2025 to 31 July 2026, read 30 September 2026
57 postcodes without an identified supply zone
Severn Trent Water (57 of 948 postcodes)
We do not have a verified hardness figure for this area. Ask your water company for its water quality report.
Storm overflows nearby
134 overflows within 10 km of ST1 centre · 1,670 spills in 2025
ST1 (district) · 2025
Source: Environment Agency EDM annual return 2025 — dated 20 August 2026, read 13 October 2026
Overflows here are run by Severn Trent Water and United Utilities.
132 of these were monitored for only part of 2025.
Nearest 5 shown
ROSE STREET CSO
Into TRIBUTARY OF THE CALDON CANAL · 0.9 km from the centre of ST1
5 spills · 0.6 hours · Monitored 100% of 2025
PRIME STREET (NO.1)/LOCKLEY ST CSO
Into TRIBUTARY OF THE CALDON CANAL · 0.9 km from the centre of ST1
1 spill · 0 hours · Monitored 100% of 2025
NORTHWOOD PRIME ST-CARDWELL ST CSO
Into TRIBUTARY OF THE CALDON CANAL · 1 km from the centre of ST1
21 spills · 17.7 hours · Monitored 34.1% of 2025
STOKE-ON-TRENT - CROMER ROAD (CSO)
Into CALDON CANAL · 1 km from the centre of ST1
1 spill · 0.1 hours · Monitored 100% of 2025
IVY HOUSE ROAD CSO
Into SWS TO THE RIVER TRENT · 1.2 km from the centre of ST1
22 spills · 8.6 hours · Monitored 100% of 2025
Annual 2025 figures from monitored overflows. Not live, and not a bathing-water or tap-water verdict.
- 57 England outfalls in the 2025 return had no usable location and aren't counted.
- Northern Ireland isn't covered: No licensed annual per-outfall source in the approved source list; BT postcode coordinates require an LPS licence.
Older homes and lead pipes
66% built before 1973
66% of homes here were built before 1973 — estimate, not a test.
Homes in the parts of ST1 we can match to council-tax records (100% of its postcodes) whose build period is known; the share with no recorded build period isn't published for these areas. Allowing for suppressed counts: 65–66%. England and Wales: 61% (2026).
Older homes are more likely to have lead pipes. Only a test tells you whether yours does.
ST1 (district) · 2026
Source: Valuation Office Agency, Council Tax: stock of properties — dated 31 March 2026, read 24 September 2026
Fluoride
We cannot confirm whether this area is part of a water fluoridation scheme. Ask your water supplier using your postcode.
Around one in ten people in England receive drinking water supplied by a fluoridation scheme.
England · 2026 health monitoring report
Source: UKHSA and DHSC — dated 30 March 2026, read 13 October 2026
Hosepipe bans
What you can do
As an Amazon Associate we earn from qualifying purchases. Links go to amazon.com; Amazon's Earn Globally service can localise them to amazon.co.uk. Check the model and UK delivery before buying.
Water filter jugs
LifeStraw
LSH7GLSPK21
Performance certification:
Certified by WQA to NSF/ANSI 42 for Aesthetic Chlorine and Taste and Odor; Certified by WQA to NSF/ANSI 53 for Lead and Mercury; Certified by WQA to NSF/ANSI 401 for Microplastics (a US/international standard; it is not UK approval)
View Detailsreduces chlorine taste and odour in drinking water.
A UK retailer lists this model. Amazon UK stock and delivery are unverified; this Amazon link may not ship to the UK. Check the exact model and UK delivery before you pay.
UK availability evidence checked 14 October 2026.
Shower filters
Weddell Water
WD-100BL
Performance certification:
Certified by NSF to NSF/ANSI 177 for Free Available Chlorine Reduction (a US/international standard; it is not UK approval)
View Detailsreduces chlorine in shower water; does not soften water.
A UK retailer lists this model. Amazon UK stock and delivery are unverified; this Amazon link may not ship to the UK. Check the exact model and UK delivery before you pay.
Check it fits your shower fitting before buying; a US fitting may need an adaptor.
UK availability evidence checked 14 October 2026.
We haven't verified a lead test kit for UK buyers yet.
What a pick has to pass:
- A lead result reported by a laboratory accredited for that test (UKAS, ISO/IEC 17025), named on the kit's listing
- UK availability evidenced by Amazon UK, the manufacturer or a UK retailer, checked in the last 90 days
Start with your water company: if you think you have lead pipes, you can ask it to test the water at your kitchen tap. Which water test you need
Common water problems
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Water softener cost UK 2026: price by home size
Why is my tap water cloudy or white?
Why is my tap water cloudy or white? (UK)
Brown tap water: causes and what to do (UK)
Why does my tap water taste metallic?
Tap water tastes metallic? Causes and fixes (UK)
Questions about tap water in ST1
- Is the water in ST1 hard or soft?
- Severn Trent Water: slightly hard, 129 mg/l, 9.0 °Clark, 7.2 °dH, 12.9 °fH (Stoke Central (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: hard, 246 mg/l, 17.3 °Clark, 13.8 °dH, 24.6 °fH (Stoke South (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: slightly hard, 121 mg/l, 8.5 °Clark, 6.8 °dH, 12.1 °fH (Ladderedge (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: hard, 209 mg/l, 14.6 °Clark, 11.7 °dH, 20.9 °fH (Bucknall (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: We do not have a verified hardness figure for this area. Ask your water company for its water quality report. Severn Trent Water: hard, 250 mg/l, 17.5 °Clark, 14.0 °dH, 25.0 °fH (Newcastle Under Lyme (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: slightly hard, 139 mg/l, 9.8 °Clark, 7.8 °dH, 13.9 °fH (Kidsgrove (supply zone), 1 August 2025 to 31 July 2026). Typical value.
- What does the drinking water regulator's record show for ST1?
- Severn Trent Water: at least 40 tests failed UK drinking-water standards in 2025 (DWI, company-wide). Some published DWI figures don't reconcile or identify a company, so we've left them out; the true number may be higher. England overall: 99.97% of tests met standards.
- Could homes in ST1 have lead pipes?
- 66% of homes here were built before 1973 — estimate, not a test. Homes in the parts of ST1 we can match to council-tax records (100% of its postcodes) whose build period is known; the share with no recorded build period isn't published for these areas. Allowing for suppressed counts: 65–66%. England and Wales: 61% (2026). Older homes are more likely to have lead pipes. Only a test tells you whether yours does.
- Is the water in ST1 fluoridated?
- We cannot confirm whether this area is part of a water fluoridation scheme. Ask your water supplier using your postcode. Around one in ten people in England receive drinking water supplied by a fluoridation scheme.
Sources and method
- Water Company Boundaries (UC2) ↗ · 19 September 2026 · read 20 September 2026
- Severn Trent Water contact page ↗ · 13 October 2026 · read 13 October 2026
- DWI england 2025, Annex B ↗ · 2025 · read 13 October 2026
- DWI england 2025, national compliance ↗ · 2025 · read 13 October 2026
- Severn Trent Water ↗ · 1 August 2025 to 31 July 2026 · read 30 September 2026
- Environment Agency EDM annual return 2025 ↗ · 2025 · read 13 October 2026
- Valuation Office Agency, Council Tax: stock of properties ↗ · 2026 · read 24 September 2026
- UKHSA and DHSC ↗ · 2026 health monitoring report · read 13 October 2026
Severn Trent Water contact page, Severn Trent Water, Severn Trent Water, Severn Trent Water, Severn Trent Water, Severn Trent Water, Severn Trent Water: Database right, used under the publisher's terms.
Water company boundaries © Water UK, licensed under CC BY 4.0Contains public sector information licensed under the Open Government Licence v3.0
Data generation uk-2026-10-16-derive6