PR19 Outcomes performance commitments - changes and corrections

During the 2019 price review (PR19) we set specific performance commitments for water companies to deliver for their customers, the environment and wider society. These measures represent the levels of service that companies commit to deliver and are linked to corresponding incentives to achieve these levels of performance over the 2020-25 period (from 1 April 2020 to 31 March 2025). 

When making the PR19 final determinations, we provided for changes and corrections to be made to performance commitments during the 2020-25 period in the prescribed circumstances set out in Annex 2 of each company’s ‘Outcomes performance commitment appendix. In summary, these circumstances are: 

  • the correction of unambiguous errors; 
  • relevant changes to thirdparty materials in performance commitment definitions; 
  • improvements to performance commitment definitions that are in customers’ interests; and 
  • bespoke adjustments in prescribed circumstances set out in individual performance commitments. 

Annex 2 specifies the procedures we expect companies to follow if a change or correction is proposed. We document unambiguous errors by issuing corrigenda. Other changes are recorded in the relevant company’s change log. In the tables below, we set out all such corrigenda and the change logs for each company, as well as corresponding consultations and decision documents. 

We also link to each companys Outcome performance commitment appendix’ as published at the December 2019 final determinations and will shortly provide a consolidated version that we will update from time to time with the changes and corrections that we make. For the full definitions of common and some comparable performance commitments, see the outcomes definitions for PR19. 

Agreed corrections and changes to performance commitment definitions  

 

Company Outcomes performance commitment appendix – as published at the final determinations Outcomes performance commitment appendix – consolidated version incorporating corrigenda and changes Corrigenda Performance commitments affected by corrigenda Change log Performance commitments affected by changes
Affinity Water PR19 final determinations: Affinity Water – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Affinity Water – Outcomes performance commitment appendix PR19AFW_W-B5 (Number of source operating under the Abstraction
Incentive Mechanism)
Changes to Affinity Water’s PR19 Outcomes performance commitments PR19AFW_W-C1 (D-MeX)
Anglian Water PR19 final determinations: Anglian Water – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Anglian Water – Outcomes performance commitment appendix PR19ANH_20 (Abstraction incentive mechanism) Changes to Anglian Water’s PR19 Outcomes performance commitments PR19ANH_2 (D-MeX)
PR19ANH_8 (pollution incidents)
PR19ANH_14 (treatment works compliance)
Bristol Water PR19 final determinations: Bristol Water – Outcomes performance commitment appendix To be added Changes to Bristol Water’s PR19 Outcomes performance commitments PR19BRL_PC13 (D-MeX)
Dŵr Cymru PR19 final determinations: Dŵr Cymru  – Outcomes performance commitment appendix To be added Changes to Dŵr Cymru’s PR19 Outcomes performance commitments PR19WSH_Sv2 (D-MeX)
PR19WSH_En3 (pollution incidents)
PR19WSH_En1 (treatment works compliance)
Hafren Dyfrdwy PR19 final determinations: Hafren Dyfrdwy  – Outcomes performance commitment appendix To be added Changes to Hafren Dyfrdwy’s PR19 Outcomes performance commitments PR19HDD_G2 (D-MeX)
PR19HDD_E2 (pollution incidents)
PR19HDD_C4 (treatment works compliance)
Northumbrian Water PR19 final determinations: Northumbrian Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Northumbrian Water – Outcomes performance commitment appendix PR19NES_BES25 (Delivery of lead enhancement programme) Changes to Northumbrian Water’s PR19 Outcomes performance commitments PR19NES_COM02 (D-MeX)
PR19NES_COM09 (Pollution incidents)
PR19NES_COM15 (Treatment works compliance)
Portsmouth Water PR19 final determinations: Portsmouth Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Portsmouth Water – Outcomes performance commitment appendix PR19PRT_ PRT-Water Resources-04 Changes to Portsmouth Water’s PR19 Outcomes performance commitments PR1 PR19PRT_PRT-Network Plus-11 (D-MeX)
SES Water PR19 final determinations: SES Water  – Outcomes performance commitment appendix To be added Changes to SES Water’s PR19 Outcomes performance commitments PR19SES_D.3 (D-MeX)
Severn Trent Water PR19 final determinations: Severn Trent Water  – Outcomes performance commitment appendix To be added Changes to Severn Trent Water’s PR19 Outcomes performance commitments PR19SVE_D02 (D-MeX)
PR19SVE_F02 (Pollution incidents)
PR19SVE_C01 (Treatment works compliance)
South East Water PR19 final determinations: South East Water  – Outcomes performance commitment appendix To be added Changes to South East Water’s PR19 Outcomes performance commitments PR19SEW_F.1 (D-MeX)
South Staffs Water PR19 final determinations: South Staffs Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: South Staffs Water – Outcomes performance commitment appendix PR19SSC_C5 (Environmentally sensitive water abstraction)

PR19SSC_ D8 (Water treatment works delivery programme)

Changes to South Staffs Water’s PR19 Outcomes performance commitments PR19SSC_A2 (D-MeX)
South West Water PR19 final determinations: South West Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: South West Water – Outcomes performance commitment appendix PR19SWB_PC B9 (Compliance with sludge standard)

PR19SWB_PC F6 (EPA)

Changes to South West Water’s PR19 Outcomes performance commitments PR19SWB_PC E4 (D-MeX)
PR19SWB_PC F1 (Pollution incidents)
PR19SWB_PC B6 (Treatment works compliance)
Southern Water PR19 final determinations: Southern Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Southern Water – Outcomes performance commitment appendix PR19SRN_WWN01 (Internal sewer flooding) Changes to Southern Water’s PR19 Outcomes performance commitments PR19SRN_WN01 (D-MeX)
PR19SRN_WWN02 (Pollution incidents)
PR19SRN_WWN05 (Treatment works compliance)
Thames Water PR19 final determinations: Thames Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Thames Water – Outcomes performance commitment appendix (updated October 2021) PR19TMS_DS02 (Surface water management)

PR19TMS_ES02 (Environmental measures delivered)

PR19TMS_BW10 (Reducing risk of lead)

PR19TMS_EW01 (Abstraction incentive mechanism (AIM)

PR19TMS_DWMP (Drainage and wastewater management plans (DWMPs))

Changes to Thames Water’s PR19 Outcomes performance commitments PR19TMS_AWS01 (D-MeX)
PR19TMS_BW09 (Water quality events)
PR19TMS_ES01 (pollution incidents)
PR19TMS_CS01 (treatment works compliance)
United Utilities PR19 final determinations: United Utilities  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: United Utilities – Outcomes performance commitment appendix PR19UU_B01-WN (Leakage)

PR19UU_C03-WR (Abstraction incentive mechanism)

Changes to United Utilities’ PR19 Outcomes performance commitments PR19UUW_D02-CF (D-MeX)
PR19UU_ C01-WWN (pollution incidents)
PR19UU_ C02-CF (treatment works compliance)
Wessex Water PR19 final determinations: Wessex Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Wessex Water – Outcomes performance commitment appendix PR19WSX_W2 (Per capita consumption)

PR19WSX_E11 (Km of river improved (non-WINEP))

PR19WSX_E5 (Greenhouse gas emissions)

PR19WSX_W3 (Customer reported leaks fixed within a day)

Changes to Wessex Water’s PR19 Outcomes performance commitments PR19WSX_X2 (D-MeX)
PR19WSX_E2 (pollution incidents)
PR19WSX_E1 (treatment works compliance)
Yorkshire Water PR19 final determinations: Yorkshire Water  – Outcomes performance commitment appendix To be added Corrigenda – PR19 final determinations: Yorkshire Water – Outcomes performance commitment appendix PR19YKY_12 (Direct support given to customers)

PR19YKY_37 (Surface water management)

PR19YKY_6b (Capital carbon and carbon arising from owned land)

Changes to Yorkshire Water’s PR19 Outcomes performance commitments PR19YKY_10 (D-Mex)
PR19YKY_30 (pollution incidents)
PR19YKY_32 (treatment works compliance)

List of consultations and decisions

Table A – Open consultations of potential changes to performance commitment definitions

 

Reason for consultation Short summary of change Performance commitments affected Consultation document(s) Respond by
Changes to third party materials referenced in performance commitments Change the reference from Issue 4 to Issue 5 of the BAS standard for the three affected companies Biosolids Notice of intention to change: PR19 Outcome performance commitment appendices – Reference in biosolids performance commitment definitions 9 August 2021
Bespoke change process We propose changes to the timing of financial adjustments for performance against the per capita consumption performance commitments and the considerations we propose to apply when determining their value. Per capita consumption (all companies) Consultation on changes to per capita consumption performance commitments 6 September 2021

 

Table B – Consultations that resulted in changes to performance commitment definitions

 

Reason for consultation Short summary of change Effective date of change Performance commitments affected Consultation document(s) Decision document(s)
Bespoke change process

 

 

 

Changing D-MeX to reflect new metrics relating to the services provided by water companies to self-lay providers (SLPs) and the adoption of water assets. 1 April 2021 D-MeX (all companies) Consultation on changing the self-lay water metrics in D-MeX – Ofwat Changing the Water UK metrics in D-MeX – our final decisions – Ofwat
Bespoke change process Changing D-MeX to reflect new metrics relating to the services provided to NAVs and the adoption of sewerage assets  1 October 2020 D-MeX (all companies) Consultation on changing the Water UK metrics in D-MeX Changing the Water UK metrics in D-MeX – our decisions
Update to third party reference Changes to the version of the references to the Environmental Performance Assessment methodology in the sewage treatment works compliance and pollution incidents common performance commitments for performance commitment reporting and ODI calculation from 2021-22 (year 2) 1 April 2021 Pollution incidents (all companies providing wastewater services)

 

Treatment works compliance (all companies providing wastewater services)

Consultation on changes to the Environmental Performance Assessment Methodology referenced in two PR19 common performance commitments Changes to the Environmental Performance Assessment Methodology referenced in two PR19 common performance commitments – our decision on performance commitment reporting and ODI calculation from 2021-22 (year 2) onwards

 

Table C – Consultations that did not result in changes to performance commitments definitions

 

Reason for consultation Short summary of proposed change Performance commitments affected Consultation document(s) Decision document(s)
Update to third party reference References to the Environmental Performance Assessment methodology in the sewage treatment works compliance and pollution incidents common performance commitments should remain as relating to version 3 for 2020-21 (year 1) performance commitment reporting and ODI calculation Pollution incidents (all companies providing wastewater services)

 

Treatment works compliance (all companies providing wastewater services)

Consultation on changes to the Environmental Performance Assessment Methodology referenced in two PR19 common performance commitments Changes to the Environmental Performance Assessment Methodology referenced in two PR19 common performance commitments – our decision on 2020-21 (year 1) performance commitment reporting and ODI calculation