SY13 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.
SY13 tap water quality report · 2026
Hardness
Hard
Overton Scar Zone (supply zone) · 1 August 2025 to 31 July 2026
Details
Overton Scar Zone (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
9 overflows within 10 km of SY13 centre
308 spills in 2025
Details
308 spills in 2025
Lead pipes
55% built before 1973
Estimate, not a test. Homes in the parts of SY13 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: 54–55%. England and Wales: 61% (2026).
Details
Estimate, not a test. Homes in the parts of SY13 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: 54–55%. England and Wales: 61% (2026).
Who supplies water in SY13
Supplies 664 of 880 postcodes (75%)
Sewerage: Usually Severn Trent Water — they provide water and sewerage across most of their area. Your water bill confirms yours.
Supplies 123 of 880 postcodes (14%)
We can't confirm your sewerage company from official data for this area.
Also supplied here: United Utilities (86 of 880 postcodes (10%))
Boundary or unplaced: 7 postcodes
Drinking-water test record
Severn Trent Water: 664 of 880 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
Hafren Dyfrdwy: 123 of 880 postcodes
Hafren Dyfrdwy
Hafren Dyfrdwy, company-wide
- Regulator
- DWI
- Report year
- 2025
- Failed tests
- Not shown
- Tests
- Not given in the report
The regulator's published total and its company rows disagree, so we don't show a count.
| Parameter | Failed tests |
|---|---|
| Coliform bacteria (indicator) | Failed tests: 9 |
| Colour | Failed tests: 1 |
| Total coliforms (confirmed) | Failed tests: 1 |
| Turbidity – indicator | Failed tests: 1 |
Source: DWI wales 2025, Annex B — dated 14 July 2026, read 13 October 2026
Source: DWI wales 2025, Annex A — dated 14 July 2026, read 13 October 2026
Wales: 99.97% of tests met standards in 2025 (DWI).
Source: DWI wales 2025, national compliance — dated 9 July 2026, read 13 October 2026
United Utilities: 86 of 880 postcodes
United Utilities
United Utilities, company-wide
- Regulator
- DWI
- Report year
- 2025
- Failed tests
- Not shown
- Tests
- 385,673
The regulator's published total and its company rows disagree, so we don't show a count.
| Parameter | Failed tests |
|---|---|
| Aluminium | Failed tests: 5 |
| E. coli (confirmed) | Failed tests: 4 |
| Iron | Failed tests: 18 |
| Lead | Failed tests: 7 |
| Manganese | Failed tests: 7 |
| Nickel | Failed tests: 3 |
| Total coliforms (confirmed) | Failed tests: 13 |
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 SY13?
67% of SY13's postcodes are in the Overton Scar Zone supply zone (Severn Trent Water): 260 mg/l, hard.
Overton Scar Zone · Severn Trent Water (586 of 880 postcodes)
260 mg/l · 18.2 °Clark · 14.6 °dH · 26.0 °fH
Typical value.
Overton Scar Zone (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
10 identified supply zones in SY13
Overton Scar Zone · Severn Trent Water (586 of 880 postcodes)
260 mg/l · 18.2 °Clark · 14.6 °dH · 26.0 °fH
Typical value.
Overton Scar Zone (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
Llwyn Onn Gravity · Hafren Dyfrdwy (120 of 880 postcodes)
72 mg/l · 5.1 °Clark · 4.0 °dH · 7.2 °fH
Typical value.
Llwyn Onn Gravity (supply zone) · 1 August 2025 to 31 July 2026
Source: Hafren Dyfrdwy — dated 1 August 2025 to 31 July 2026, read 1 October 2026
Ridley And Bulkeley · United Utilities (49 of 880 postcodes)
103 mg/l · 7.2 °Clark · 5.8 °dH · 10.3 °fH
Zone average of 23 samples.
Ridley And Bulkeley (supply zone) · 12-month average, updated 25 September 2026; 23 samples
Source: United Utilities — dated 12-month average, updated 25 September 2026, read 30 September 2026
Brockhurst Zone · Severn Trent Water (26 of 880 postcodes)
228 mg/l · 16.0 °Clark · 12.8 °dH · 22.8 °fH
Typical value.
Brockhurst Zone (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
Malpas And Mouldsworth · United Utilities (20 of 880 postcodes)
16 mg/l · 1.1 °Clark · 0.9 °dH · 1.6 °fH
Zone average of 22 samples.
Malpas And Mouldsworth (supply zone) · 12-month average, updated 25 September 2026; 22 samples
Source: United Utilities — dated 12-month average, updated 25 September 2026, read 30 September 2026
Audlem · United Utilities (16 of 880 postcodes)
109 mg/l · 7.6 °Clark · 6.1 °dH · 10.9 °fH
Zone average of 13 samples.
Audlem (supply zone) · 12-month average, updated 25 September 2026; 13 samples
Source: United Utilities — dated 12-month average, updated 25 September 2026, read 30 September 2026
Stoke Tern Zone · Severn Trent Water (14 of 880 postcodes)
226 mg/l · 15.8 °Clark · 12.7 °dH · 22.6 °fH
Typical value.
Stoke Tern Zone (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
Shiffords Bridge Zone · Severn Trent Water (12 of 880 postcodes)
232 mg/l · 16.3 °Clark · 13.0 °dH · 23.2 °fH
Typical value.
Shiffords Bridge Zone (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
Ellesmere · Severn Trent Water (2 of 880 postcodes)
274 mg/l · 19.2 °Clark · 15.3 °dH · 27.4 °fH
Typical value.
Ellesmere (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
Wrexham · Hafren Dyfrdwy (1 of 880 postcodes)
72 mg/l · 5.1 °Clark · 4.0 °dH · 7.2 °fH
Typical value.
Wrexham (supply zone) · 1 August 2025 to 31 July 2026
Source: Hafren Dyfrdwy — dated 1 August 2025 to 31 July 2026, read 1 October 2026
27 postcodes without an identified supply zone
Severn Trent Water (24 of 880 postcodes)
We do not have a verified hardness figure for this area. Ask your water company for its water quality report.
Hafren Dyfrdwy (2 of 880 postcodes)
We do not have a verified hardness figure for this area. Ask your water company for its water quality report.
United Utilities (1 of 880 postcodes)
We do not have a verified hardness figure for this area. Ask your water company for its water quality report.
Storm overflows nearby
9 overflows within 10 km of SY13 centre · 308 spills in 2025
SY13 (district) · 2025
Source: Environment Agency EDM annual return 2025 — dated 20 August 2026, read 13 October 2026
Overflows here are run by Dwr Cymru Welsh Water, Severn Trent Water and United Utilities.
9 of these were monitored for only part of 2025.
Nearest 5 shown
JUBILEE PARK NO 3175 CSO
Into Staggs Brook · 1.9 km from the centre of SY13
14 spills · 25 hours · Monitored 99.8% of 2025
SMALLBROOK NO 2177 CSO
Into Staggs Brook · 2.1 km from the centre of SY13
18 spills · 14.5 hours · Monitored 99.1% of 2025
BARGATES NO 2174 CSO
Into Tributary of Red Brook · 2.2 km from the centre of SY13
46 spills · 48.5 hours · Monitored 75.1% of 2025
WHITCHURCH (RISING SUN) WWTW
Into Wych Brook · 3 km from the centre of SY13
32 spills · 263.3 hours · Monitored 99.8% of 2025
PREES - HIGHER HEATH STW
Into TRIB OF BAILEY BROOK · 5.7 km from the centre of SY13
15 spills · 89.6 hours · Monitored 98.5% 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
55% built before 1973
55% of homes here were built before 1973 — estimate, not a test.
Homes in the parts of SY13 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: 54–55%. England and Wales: 61% (2026).
Older homes are more likely to have lead pipes. Only a test tells you whether yours does.
SY13 (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 SY13
- Is the water in SY13 hard or soft?
- Severn Trent Water: hard, 260 mg/l, 18.2 °Clark, 14.6 °dH, 26.0 °fH (Overton Scar Zone (supply zone), 1 August 2025 to 31 July 2026). Typical value. Hafren Dyfrdwy: soft, 72 mg/l, 5.1 °Clark, 4.0 °dH, 7.2 °fH (Llwyn Onn Gravity (supply zone), 1 August 2025 to 31 July 2026). Typical value. United Utilities: slightly hard, 103 mg/l, 7.2 °Clark, 5.8 °dH, 10.3 °fH (Ridley And Bulkeley (supply zone), 12-month average, updated 25 September 2026; 23 samples). Zone average of 23 samples. Severn Trent Water: hard, 228 mg/l, 16.0 °Clark, 12.8 °dH, 22.8 °fH (Brockhurst Zone (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. United Utilities: soft, 16 mg/l, 1.1 °Clark, 0.9 °dH, 1.6 °fH (Malpas And Mouldsworth (supply zone), 12-month average, updated 25 September 2026; 22 samples). Zone average of 22 samples. United Utilities: slightly hard, 109 mg/l, 7.6 °Clark, 6.1 °dH, 10.9 °fH (Audlem (supply zone), 12-month average, updated 25 September 2026; 13 samples). Zone average of 13 samples. Severn Trent Water: hard, 226 mg/l, 15.8 °Clark, 12.7 °dH, 22.6 °fH (Stoke Tern Zone (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: hard, 232 mg/l, 16.3 °Clark, 13.0 °dH, 23.2 °fH (Shiffords Bridge Zone (supply zone), 1 August 2025 to 31 July 2026). Typical value. Severn Trent Water: hard, 274 mg/l, 19.2 °Clark, 15.3 °dH, 27.4 °fH (Ellesmere (supply zone), 1 August 2025 to 31 July 2026). Typical value. Hafren Dyfrdwy: We do not have a verified hardness figure for this area. Ask your water company for its water quality report. Hafren Dyfrdwy: soft, 72 mg/l, 5.1 °Clark, 4.0 °dH, 7.2 °fH (Wrexham (supply zone), 1 August 2025 to 31 July 2026). Typical value. United Utilities: We do not have a verified hardness figure for this area. Ask your water company for its water quality report.
- What does the drinking water regulator's record show for SY13?
- 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 SY13 have lead pipes?
- 55% of homes here were built before 1973 — estimate, not a test. Homes in the parts of SY13 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: 54–55%. 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 SY13 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
- Hafren Dyfrdwy 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
- DWI wales 2025, Annex B ↗ · 2025 · read 13 October 2026
- DWI wales 2025, national compliance ↗ · 2025 · read 13 October 2026
- Severn Trent Water ↗ · 1 August 2025 to 31 July 2026 · read 30 September 2026
- Hafren Dyfrdwy ↗ · 1 August 2025 to 31 July 2026 · read 1 October 2026
- United Utilities ↗ · 12-month average, updated 25 September 2026; 23 samples · read 30 September 2026
- United Utilities ↗ · 12-month average, updated 25 September 2026; 22 samples · read 30 September 2026
- United Utilities ↗ · 12-month average, updated 25 September 2026; 13 samples · 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, Hafren Dyfrdwy contact page, Severn Trent Water, Hafren Dyfrdwy, United Utilities, Severn Trent Water, United Utilities, United Utilities, Severn Trent Water, Severn Trent Water, Severn Trent Water, Hafren Dyfrdwy: 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