S81 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.
S81 tap water quality report · 2026
Hardness
Very hard
Worksop (supply zone) · 1 August 2025 to 31 July 2026
Details
Worksop (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
32 overflows within 10 km of S81 centre
643 spills in 2025
Details
643 spills in 2025
Lead pipes
56% built before 1973
Estimate, not a test. Homes in the parts of S81 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: 55–56%. England and Wales: 61% (2026).
Details
Estimate, not a test. Homes in the parts of S81 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: 55–56%. England and Wales: 61% (2026).
Who supplies water in S81
Supplies 996 of 1,108 postcodes (90%)
Sewerage: Usually Severn Trent Water — they provide water and sewerage across most of their area. Your water bill confirms yours.
Also supplied here: Yorkshire Water (91 of 1,108 postcodes (8%)); Anglian Water (2 of 1,108 postcodes (0%))
Boundary or unplaced: 19 postcodes
Drinking-water test record
Severn Trent Water: 996 of 1,108 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
Yorkshire Water: 91 of 1,108 postcodes
Yorkshire Water
Yorkshire Water, company-wide
- Regulator
- DWI
- Report year
- 2025
- Failed tests
- Not shown
- Tests
- 388,919
The regulator's published total and its company rows disagree, so we don't show a count.
| Parameter | Failed tests |
|---|---|
| E. coli (confirmed) | Failed tests: 4 |
| Enterococci (confirmed) | Failed tests: 2 |
| Iron | Failed tests: 20 |
| Lead | Failed tests: 6 |
| Nickel | Failed tests: 7 |
| Total coliforms (confirmed) | Failed tests: 30 |
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
Anglian Water: 2 of 1,108 postcodes
Anglian Water
Anglian Water group, includes Anglian Water
- Regulator
- DWI
- Report year
- 2025
- Failed tests
- Not shown
- Tests
- 384,536
The regulator's published total and its company rows disagree, so we don't show a count.
| Parameter | Failed tests |
|---|---|
| Copper | Failed tests: 1 |
| E. coli (confirmed) | Failed tests: 1 |
| Iron | Failed tests: 6 |
| Lead | Failed tests: 2 |
| Nickel | Failed tests: 3 |
| Total coliforms (confirmed) | Failed tests: 10 |
| Turbidity – indicator | Failed tests: 2 |
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 S81?
Across S81's supply zones, hardness ranges from 147 mg/l (slightly hard) to 310 mg/l (very hard). Those 5 zones cover 96% of its postcodes.
6 identified supply zones in S81
Worksop · Severn Trent Water (553 of 1,108 postcodes)
308 mg/l · 21.6 °Clark · 17.3 °dH · 30.8 °fH
Typical value.
Worksop (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
Harworth · Severn Trent Water (334 of 1,108 postcodes)
296 mg/l · 20.8 °Clark · 16.6 °dH · 29.6 °fH
Typical value.
Harworth (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
Sherwood · Severn Trent Water (89 of 1,108 postcodes)
310 mg/l · 21.8 °Clark · 17.4 °dH · 31.0 °fH
Typical value.
Sherwood (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
Kiveton 2024 · Yorkshire Water (87 of 1,108 postcodes)
147 mg/l · 10.3 °Clark · 8.2 °dH · 14.7 °fH
Zone average.
Kiveton 2024 (supply zone) · 1 January 2024 to 31 December 2024
Source: Yorkshire Water — dated 1 January 2024 to 31 December 2024, read 29 September 2026
Everton PWSZ · Anglian Water (2 of 1,108 postcodes)
at least 400 mg/l · at least 28.1 °Clark · at least 22.4 °dH · at least 40.0 °fH
Zone average. At least 400 mg/l (very hard or harder); total hardness is higher.
Everton PWSZ (supply zone) · January 2025 to December 2025
Source: Anglian Water — dated January 2025 to December 2025, read 28 September 2026
Doncaster - Wadworth 2019 · Yorkshire Water (1 of 1,108 postcodes)
267 mg/l · 18.7 °Clark · 15.0 °dH · 26.7 °fH
Zone average.
Doncaster - Wadworth 2019 (supply zone) · 1 January 2024 to 31 December 2024
Source: Yorkshire Water — dated 1 January 2024 to 31 December 2024, read 29 September 2026
23 postcodes without an identified supply zone
Severn Trent Water (20 of 1,108 postcodes)
We do not have a verified hardness figure for this area. Ask your water company for its water quality report.
Yorkshire Water (3 of 1,108 postcodes)
We do not have a verified hardness figure for this area. Ask your water company for its water quality report.
Storm overflows nearby
32 overflows within 10 km of S81 centre · 643 spills in 2025
S81 (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 Yorkshire Water.
32 of these were monitored for only part of 2025.
Nearest 5 shown
CARLTON SPS - STORM/EMERGENCY OF
Into WALLING WELLS BROOK · 2 km from the centre of S81
5 spills · 44 hours · Monitored 96.9% of 2025
WOODSETTS SEWAGE TREATMENT WORKS
Into TRIBUTARY OF OWLANDS WOOD DYKE · 2.3 km from the centre of S81
5 spills · 36.6 hours · Monitored 99.8% of 2025
WORKSOP - KILTON HILL (CSO)
Into RIVER RYTON · 3.5 km from the centre of S81
2 spills · 1.7 hours · Monitored 98.6% of 2025
HODSOCK WASTEWATER TREATMENT WORKS
Into TRIBUTARY OF CARLTON BECK · 3.7 km from the centre of S81
75 spills · 1,018.3 hours · Monitored 99.3% of 2025
WORKSOP - EASTGATE (CSO)
Into RIVER RYTON · 3.9 km from the centre of S81
11 spills · 10.7 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
56% built before 1973
56% of homes here were built before 1973 — estimate, not a test.
Homes in the parts of S81 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: 55–56%. England and Wales: 61% (2026).
Older homes are more likely to have lead pipes. Only a test tells you whether yours does.
S81 (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 water softener for UK buyers yet.
What a pick has to pass:
- An exact-model listing from NSF, WQA or IAPMO for the model sold in the UK
- Listed to NSF/ANSI 44, the water softener standard
- The manufacturer's documented feed connection and water-pressure range, so a plumber can check them against UK pipework
- UK availability evidenced by Amazon UK, the manufacturer or a UK retailer, checked in the last 90 days
Until we can recommend one, see what a softener costs to buy, fit and run in the UK. Water softener cost
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
How much does a water softener cost in the UK?
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 S81
- Is the water in S81 hard or soft?
- Severn Trent Water: very hard, 308 mg/l, 21.6 °Clark, 17.3 °dH, 30.8 °fH (Worksop (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: hard, 296 mg/l, 20.8 °Clark, 16.6 °dH, 29.6 °fH (Harworth (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: very hard, 310 mg/l, 21.8 °Clark, 17.4 °dH, 31.0 °fH (Sherwood (supply zone), 1 August 2025 to 31 July 2026). Typical value. Yorkshire Water: slightly hard, 147 mg/l, 10.3 °Clark, 8.2 °dH, 14.7 °fH (Kiveton 2024 (supply zone), 1 January 2024 to 31 December 2024). Zone average. Severn Trent Water: We do not have a verified hardness figure for this area. Ask your water company for its water quality report. Yorkshire Water: We do not have a verified hardness figure for this area. Ask your water company for its water quality report. Anglian Water: at least very hard, at least 400 mg/l, at least 28.1 °Clark, at least 22.4 °dH, at least 40.0 °fH (Everton PWSZ (supply zone), January 2025 to December 2025). Zone average. At least 400 mg/l (very hard or harder); total hardness is higher. Yorkshire Water: hard, 267 mg/l, 18.7 °Clark, 15.0 °dH, 26.7 °fH (Doncaster - Wadworth 2019 (supply zone), 1 January 2024 to 31 December 2024). Zone average.
- What does the drinking water regulator's record show for S81?
- 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 S81 have lead pipes?
- 56% of homes here were built before 1973 — estimate, not a test. Homes in the parts of S81 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: 55–56%. 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 S81 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
- Yorkshire Water ↗ · 1 January 2024 to 31 December 2024 · read 29 September 2026
- Anglian Water ↗ · January 2025 to December 2025 · read 28 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, Yorkshire Water, Yorkshire 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