# UK Trade Effluent Charges

> The UK Trade Effluent Charges carries 3 published figures read from 3 sources' own pages, from 1.39 to 500 GBP, read 28 October 2026.

Trade Effluent Calculator · https://tradeeffluentcalculator.co.uk/datasets/uk-trade-effluent-charges/ · computed 2026-10-29

**Range of the published figures:** 1.39 to 500 GBP (range 1.39 to 500 GBP; 3 published figures; 3 of 32 sources read publish one).

3 of the 32 named sources read in full publish a figure; 30 publish none, read 28 October 2026.

## By undertaker

| Breakdown | Median | Range | Sources |
|---|---|---|---|
| undertaker South West Water minimum annual trade effluent charge | 387.67 GBP | 387.67 to 387.67 GBP | 1 |
| undertaker Wessex Water sampling charge, optional strength-based tariff | 500 GBP | 500 to 500 GBP | 1 |
| undertaker NI Water standard strength combined charge (per m3) | 1.39 GBP | 1.39 to 1.39 GBP | 1 |

## Every figure, with its source

One row per source: the figure the source's own page publishes, the page, and the day it was read.

| Source | Figure | Breakdown | Read |
|---|---|---|---|
| [Wessex Water wholesale charges scheme 2026/27](https://businessservices.wessexwater.co.uk/media/icmjtn4u/wholesale-charges-scheme-2026-27.pdf) | 500 GBP | Wessex Water sampling charge, optional strength-based tariff | 2026-10-28 |
| [South West Water wholesale charges 2026/27 (v2)](https://www.southwestwater.co.uk/siteassets/documents/charges/wholesale-charges/202627/sww/sww-wholesale-charges-document-2026-27-v2.pdf) | 387.67 GBP | South West Water minimum annual trade effluent charge | 2026-10-12 |
| [NI Water summary scheme of charges 2026/27](https://www.niwater.com/media/2phonhid/niw-summary-scheme-of-charges-2026-27.pdf) | 1.39 GBP | NI Water standard strength combined charge (per m3) | 2026-10-28 |

## The sentence each figure was read from (3)

- [Wessex Water wholesale charges scheme 2026/27](https://businessservices.wessexwater.co.uk/media/icmjtn4u/wholesale-charges-scheme-2026-27.pdf), read 2026-10-28: "tariff, a sampling charge of £500 is payable by the Retailer to the Company."
- [South West Water wholesale charges 2026/27 (v2)](https://www.southwestwater.co.uk/siteassets/documents/charges/wholesale-charges/202627/sww/sww-wholesale-charges-document-2026-27-v2.pdf), read 2026-10-12: "The minimum charge will be applied where the total annual cost as calculated using the Mogden Formula is less than £387.67."
- [NI Water summary scheme of charges 2026/27](https://www.niwater.com/media/2phonhid/niw-summary-scheme-of-charges-2026-27.pdf), read 2026-10-28: "£1.3938"

## Read in full, publishes no figure

- [Thames Water wholesale charges 2026/27 and AMP8 information document](https://www.thameswater.co.uk/media-library/qgsmhop1/wholesale-charges-2026-27-and-amp8-information-document.pdf), read 2026-10-28: every candidate on the page was refused
- [Thames Water indicative wholesale charges schedule 2027/28](https://www.thameswater.co.uk/media-library/1bqjescz/indicative-wholesale-charges-schedule-2027-28.pdf), read 2026-10-28: every candidate on the page was refused
- [Thames Water statement of significant change 2026/27](https://www.thameswater.co.uk/media-library/isvoetmu/statement-of-significant-change-for-wholesale-charges-2026-27.pdf), read 2026-10-28: every candidate on the page was refused
- [Thames Water information on indicative wholesale charges 2026/27](https://www.thameswater.co.uk/media-library/0fuis2oy/information-on-indicative-wholesale-charges-2026-27-final.pdf), read 2026-10-28: read in full and no accepted figure on the page
- [Thames Water trade effluent (business)](https://www.thameswater.co.uk/business/trade-effluent), read 2026-10-28: read in full and no accepted figure on the page
- [Severn Trent non-household wholesale scheme of charges 2026/27](https://www.stwater.co.uk/content/dam/stw/my-account/our-charges/2026/st-wholesale-charges-scheme-nhh-2026-27.pdf), read 2026-10-28: every candidate on the page was refused
- [Severn Trent trade effluent consent](https://stwater.co.uk/businesses-and-retailers/trade-effluent-consent), read 2026-10-28: read in full and no accepted figure on the page
- [Wessex Water further information on 2026/27 wholesale charges](https://businessservices.wessexwater.co.uk/media/pqge1ved/further-information-on-2026-27-wholesale-charges.pdf), read 2026-10-28: every candidate on the page was refused
- [Wessex Water indicative bulk charges for NAVs 2026/27](https://corporate.wessexwater.co.uk/media/jkdlw3dc/indicative-bulk-charges-for-navs-scheme-2026-27.pdf), read 2026-10-28: every candidate on the page was refused
- [Northumbrian Water indicative primary wholesale charges 2026/27](https://www.eswater.co.uk/globalassets/customer-pdfs/wholesale-pdfs/charges-2026-27/2026-27-nwl-indicative-primary-wholesale-charges.pdf), read 2026-10-28: every candidate on the page was refused
- [Northumbrian Water statement of significant changes 2026/27 (final)](https://www.nwl.co.uk/globalassets/customer-pdfs/wholesale-pdfs/charges-2026-27/nwl-primary-wholesale-charges-statement-of-significant-changes-to-charges-2026-27---final.pdf), read 2026-10-28: every candidate on the page was refused
- [Northumbrian Water statement of significant changes 2026/27 (indicative)](https://www.eswater.co.uk/globalassets/customer-pdfs/wholesale-pdfs/charges-2026-27/nwl-primary-wholesale-charges-statement-of-significant-changes-to-charges-2026-27---indicatives.pdf), read 2026-10-28: read in full and no accepted figure on the page
- [Northumbrian Water trade effluent](https://www.nwl.co.uk/business/trade-effluent/), read 2026-10-28: read in full and no accepted figure on the page
- [Hafren Dyfrdwy trade effluent charges 2026/27](https://www.hdcymru.co.uk/businesses-and-retailers/charges/trade-effluent-charges), read 2026-10-28: read in full and no accepted figure on the page
- [Hafren Dyfrdwy NHH wholesale charges scheme 2026/27](https://www.hdcymru.co.uk/content/dam/stw/my-account/our-charges/2026/hd-wholesale-charges-scheme-nhh-2026-27.pdf), read 2026-10-28: every candidate on the page was refused
- [Hafren Dyfrdwy indicative NHH wholesale charges scheme 2026/27](https://www.hdcymru.co.uk/content/dam/hdcymru/my-account/our-charges/2026/indicative-hd-nhh-wholesale-charges-scheme-2026-27-publish.pdf), read 2026-10-28: read in full and no accepted figure on the page
- [Yorkshire Water wholesale charges scheme 2026/27](https://www.yorkshirewater.com/media/oqdctet0/48659_yw_wholesale_charges_scheme_2026-2027_digi_aw.pdf), read 2026-10-28: every candidate on the page was refused
- [Yorkshire Water statement of significant changes 2026/27](https://www.yorkshirewater.com/media/kznkwshq/statementofsignificantchanges_26-27_v2.pdf), read 2026-10-28: every candidate on the page was refused
- [United Utilities statement of significant changes, final charges 2026/27](https://corporate.unitedutilities.com/globalassets/documents/statement-of-significant-changes-final-charges-2026-27.pdf), read 2026-10-28: every candidate on the page was refused
- [United Utilities trade effluent FAQs](https://corporate.unitedutilities.com/Business-services/trade-effluent/trade-effluent-faqs), read 2026-10-28: read in full and no accepted figure on the page
- [NI Water trade effluent charges](https://www.niwater.com/trade-effluent-charges/), read 2026-10-28: read in full and no accepted figure on the page
- [Scottish Water Part 1 wholesale charges scheme 2025/26](https://www.scottishwater.co.uk/-/media/ScottishWater/Document-Hub/Your-Home/Charges/2025/100225Pt1WholesaleChargesScheme25-26.pdf), read 2026-10-28: every candidate on the page was refused
- [ESP Water wholesale tariff 2026/27 (NAV)](https://espug.com/documents/2026/01/esp-wholesale-tariff-2026-27.pdf/), read 2026-10-28: every candidate on the page was refused
- [Independent Water Networks wholesale charges 2025/26 (NAV)](https://www.iwnl.co.uk/wp-content/uploads/2025/01/Wholesale-charges-April-2025-March-2026.pdf), read 2026-10-28: every candidate on the page was refused
- [Water Plus charges at a glance, Severn Trent area 2026/27](https://www.water-plus.co.uk/media/nttlvuhk/charges-at-a-glance-severn-trent-water-2026-27.pdf), read 2026-10-28: every candidate on the page was refused
- [Water Plus charges at a glance, United Utilities area 2026/27](https://www.water-plus.co.uk/media/afwn5mqr/charges-at-a-glance-united-utilities-2026-27.pdf), read 2026-10-28: every candidate on the page was refused
- [Water Plus scheme of charges, UU area, April 2026](https://www.water-plus.co.uk/media/js2jmove/scheme-of-charges_uu_april2026.pdf), read 2026-10-28: every candidate on the page was refused
- [Water Plus wholesaler price changes 2026/27](https://www.water-plus.co.uk/news/wholesaler-price-changes/), read 2026-10-28: every candidate on the page was refused
- [Veolia Water Retail scheme of charges 2026/27 (Wessex area)](https://www.veolia.co.uk/sites/g/files/dvc1681/files/document/2026/03/Veolia%20Water%20Retail%20%28UK%29%20Ltd%202026_27%20Scheme%20of%20Charges%20-%20Tidworth%20Exit%20Area%20.pdf), read 2026-10-28: every candidate on the page was refused
- [Hach Mogden formula calculator](https://uk.hach.com/mogden-formula-calculator), read 2026-10-28: every candidate on the page was refused

## Methodology

Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 3 of the 32 named sources that could be read published a usable figure; 30 published none and are recorded as not published, never filled in; 6 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in GBP (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 236 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): per undertaker the six Mogden parameters for 2026/27 and the change on 2025/26; the median, minimum and maximum unit charge (pence per m3) at standard strength and at a stated COD and suspended solids across every undertaker; the cost of a worked discharge in each area; which undertakers added an ammonia charge or banded by volume

## Sources

- [Thames Water wholesale charges 2026/27 and AMP8 information document](https://www.thameswater.co.uk/media-library/qgsmhop1/wholesale-charges-2026-27-and-amp8-information-document.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Thames Water indicative wholesale charges schedule 2027/28](https://www.thameswater.co.uk/media-library/1bqjescz/indicative-wholesale-charges-schedule-2027-28.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Thames Water statement of significant change 2026/27](https://www.thameswater.co.uk/media-library/isvoetmu/statement-of-significant-change-for-wholesale-charges-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Thames Water information on indicative wholesale charges 2026/27](https://www.thameswater.co.uk/media-library/0fuis2oy/information-on-indicative-wholesale-charges-2026-27-final.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Thames Water trade effluent (business)](https://www.thameswater.co.uk/business/trade-effluent) (the publisher's own terms; quoted for reporting and comment)
- [Severn Trent non-household wholesale scheme of charges 2026/27](https://www.stwater.co.uk/content/dam/stw/my-account/our-charges/2026/st-wholesale-charges-scheme-nhh-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Severn Trent trade effluent consent](https://stwater.co.uk/businesses-and-retailers/trade-effluent-consent) (the publisher's own terms; quoted for reporting and comment)
- [Wessex Water wholesale charges scheme 2026/27](https://businessservices.wessexwater.co.uk/media/icmjtn4u/wholesale-charges-scheme-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Wessex Water further information on 2026/27 wholesale charges](https://businessservices.wessexwater.co.uk/media/pqge1ved/further-information-on-2026-27-wholesale-charges.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Wessex Water indicative bulk charges for NAVs 2026/27](https://corporate.wessexwater.co.uk/media/jkdlw3dc/indicative-bulk-charges-for-navs-scheme-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [South West Water wholesale charges 2026/27 (v2)](https://www.southwestwater.co.uk/siteassets/documents/charges/wholesale-charges/202627/sww/sww-wholesale-charges-document-2026-27-v2.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Northumbrian Water indicative primary wholesale charges 2026/27](https://www.eswater.co.uk/globalassets/customer-pdfs/wholesale-pdfs/charges-2026-27/2026-27-nwl-indicative-primary-wholesale-charges.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Northumbrian Water statement of significant changes 2026/27 (final)](https://www.nwl.co.uk/globalassets/customer-pdfs/wholesale-pdfs/charges-2026-27/nwl-primary-wholesale-charges-statement-of-significant-changes-to-charges-2026-27---final.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Northumbrian Water statement of significant changes 2026/27 (indicative)](https://www.eswater.co.uk/globalassets/customer-pdfs/wholesale-pdfs/charges-2026-27/nwl-primary-wholesale-charges-statement-of-significant-changes-to-charges-2026-27---indicatives.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Northumbrian Water trade effluent](https://www.nwl.co.uk/business/trade-effluent/) (the publisher's own terms; quoted for reporting and comment)
- [Hafren Dyfrdwy trade effluent charges 2026/27](https://www.hdcymru.co.uk/businesses-and-retailers/charges/trade-effluent-charges) (the publisher's own terms; quoted for reporting and comment)
- [Hafren Dyfrdwy NHH wholesale charges scheme 2026/27](https://www.hdcymru.co.uk/content/dam/stw/my-account/our-charges/2026/hd-wholesale-charges-scheme-nhh-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Hafren Dyfrdwy indicative NHH wholesale charges scheme 2026/27](https://www.hdcymru.co.uk/content/dam/hdcymru/my-account/our-charges/2026/indicative-hd-nhh-wholesale-charges-scheme-2026-27-publish.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Yorkshire Water wholesale charges scheme 2026/27](https://www.yorkshirewater.com/media/oqdctet0/48659_yw_wholesale_charges_scheme_2026-2027_digi_aw.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Yorkshire Water statement of significant changes 2026/27](https://www.yorkshirewater.com/media/kznkwshq/statementofsignificantchanges_26-27_v2.pdf) (the publisher's own terms; quoted for reporting and comment)
- [United Utilities statement of significant changes, final charges 2026/27](https://corporate.unitedutilities.com/globalassets/documents/statement-of-significant-changes-final-charges-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [United Utilities trade effluent FAQs](https://corporate.unitedutilities.com/Business-services/trade-effluent/trade-effluent-faqs) (the publisher's own terms; quoted for reporting and comment)
- [NI Water trade effluent charges](https://www.niwater.com/trade-effluent-charges/) (the publisher's own terms; quoted for reporting and comment)
- [NI Water summary scheme of charges 2026/27](https://www.niwater.com/media/2phonhid/niw-summary-scheme-of-charges-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Scottish Water Part 1 wholesale charges scheme 2025/26](https://www.scottishwater.co.uk/-/media/ScottishWater/Document-Hub/Your-Home/Charges/2025/100225Pt1WholesaleChargesScheme25-26.pdf) (the publisher's own terms; quoted for reporting and comment)
- [ESP Water wholesale tariff 2026/27 (NAV)](https://espug.com/documents/2026/01/esp-wholesale-tariff-2026-27.pdf/) (the publisher's own terms; quoted for reporting and comment)
- [Independent Water Networks wholesale charges 2025/26 (NAV)](https://www.iwnl.co.uk/wp-content/uploads/2025/01/Wholesale-charges-April-2025-March-2026.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Southern Water wholesale charges 2026/27](https://www.southernwater.co.uk/media/rzrpp0sk/wholesale_charges_2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Southern Water board assurance 2026/27](https://www.southernwater.co.uk/media/zarpdf3p/statement-of-board-assurance-for-wholesale-charges-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Anglian Water current wholesale charges](https://wholesale.anglianwater.co.uk/charges-and-billing/current-charges) (the publisher's own terms; quoted for reporting and comment)
- [Albion Water wholesale charges 2026/27 (NAV)](https://www.albionwater.co.uk/wp-content/uploads/2026/01/Albion-Water-Ltd-Wholesale-Charges-2026-2027.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Water Plus charges at a glance, Severn Trent area 2026/27](https://www.water-plus.co.uk/media/nttlvuhk/charges-at-a-glance-severn-trent-water-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Water Plus charges at a glance, United Utilities area 2026/27](https://www.water-plus.co.uk/media/afwn5mqr/charges-at-a-glance-united-utilities-2026-27.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Water Plus scheme of charges, UU area, April 2026](https://www.water-plus.co.uk/media/js2jmove/scheme-of-charges_uu_april2026.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Water Plus wholesaler price changes 2026/27](https://www.water-plus.co.uk/news/wholesaler-price-changes/) (the publisher's own terms; quoted for reporting and comment)
- [Veolia Water Retail scheme of charges 2026/27 (Wessex area)](https://www.veolia.co.uk/sites/g/files/dvc1681/files/document/2026/03/Veolia%20Water%20Retail%20%28UK%29%20Ltd%202026_27%20Scheme%20of%20Charges%20-%20Tidworth%20Exit%20Area%20.pdf) (the publisher's own terms; quoted for reporting and comment)
- [Hach Mogden formula calculator](https://uk.hach.com/mogden-formula-calculator) (the publisher's own terms; quoted for reporting and comment)
- [ofwat.gov.uk](https://www.ofwat.gov.uk/households/your-water-company/) (the publisher's own terms; quoted for reporting and comment)

## Cite or embed

- The UK Trade Effluent Charges carries 3 published figures read from 3 sources' own pages, from 1.39 to 500 GBP, read 28 October 2026.
- 3 of the 32 named sources read in full publish a figure; 30 publish none, read 28 October 2026.
- UK Trade Effluent Charges, undertaker South West Water minimum annual trade effluent charge: median 387.67 GBP across 1 source, read 28 October 2026.
- UK Trade Effluent Charges, undertaker Wessex Water sampling charge, optional strength-based tariff: median 500 GBP across 1 source, read 28 October 2026.
- UK Trade Effluent Charges, undertaker NI Water standard strength combined charge (per m3): median 1.39 GBP across 1 source, read 28 October 2026.

Cite as: "tradeeffluentcalculator.co.uk UK Trade Effluent Charges", updated 2026-10-29, https://tradeeffluentcalculator.co.uk/datasets/uk-trade-effluent-charges/.

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