Created 10 months ago, updated 18 days ago
From
01/01/2018
To
31/12/2019

2018-19 Link Target; 100%* Actual; 99.962%

2019-20 Link Target; 100%* Actual; 99.949%


Outcome; We provide you with water that is clean and safe to drink

Description; This measures the quality of our water at the customers’ taps. We take water samples based on the sampling programme monitored by the Drinking Water Inspectorate (DWI), and the results are used to determine the percentage of samples that are at or meet the required standards.


About the data

A full breakdown of the drinking water quality data that supports our 18/19 Annual performance report. Water quality samples are reported against calendar year

(e.g APR 18/19 is Jan 18-Dec 18)

* 99.960% (Years 1 and 2) and 100% (Years 3-5) reported to 3 decimal places. More information relating to the 2019/20 performance commitment can be found here on page 62.

Link Target; 6 Actual; 5


Outcome; We provide you with water that is clean and safe to drink

Description; Any significant incident where the Drinking Water Inspectorate (DWI) has required us to take corrective action to maintain compliance or protect public health. Essentially, this refers to the number of times that the DWI feels that we haven’t dealt with a situation appropriately when we’ve had to notify customers that the quality of our water is not up to acceptable standards.


About the data


Rows with a resulting 'Yes' against it within the column 'Event with Corrective action' signify drinking water events which require corrective action or there has been an issue that was notifiable.

From
01/04/2018
To
31/03/2019

2018-19 Link Target; Less than 6108 Actual; 7964

2019-20 Link Target; Less than 6108 Actual; 6368


Outcome; We provide you with water that is clean and safe to drink

Description; The number of times that customers contact us each year because of taste, odour or discolouration issues with our water, and perceived illness as a result of drinking our water.

About the data

14207 rows of contact data displaying contact type, reason for contact, normalised xy coordinates and Postal Sector.

From
01/01/2018
To
31/12/2018

Link Target; Stable Actual; Stable


Outcome; We provide you with water that is clean and safe to drink

Description; An overall assessment of the long-term stability and reliability for water quality. It’s based on a series of measures which include non-compliance of our water treatment works sites and reservoirs due to coliform bacteria, turbidity and the number of reactive equipment failures.


About the data

More information regarding this performance commitment can be found here on page 216 and on rows 1-6 of page 214 for the data tables to which the data refers to.


Technical details specific to reference bandings


Reference and Upper Reference refer to the bandings that determine whether a performance commitment is improving, stable or deteriorating, with an overall assessment taken by way of a calculation of the sub-measures (rows 1-6 page 214 as detailed above). The first assessment is the overall status of the main S&R measure as either; Improving, Stable or Deteriorating. This assessment is reported annually with confirmation of the end of AMP position made in year four based on the year five forecast outturn position. Sub-measures will be judged as either Stable, Improving or Deteriorating depending on their position in relation to the reference levels set at PR14 and confirmed in Ofwats ‘FD[final determination] Outcome and ODI[outcome delivery incentives] base dataset’. The number of sub-measures’ categorisation will then be aggregated to confirm the overall assessment for the overall S&R measure.