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| |  Non-Financial Measures |
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June return: non-financial measures
This section of the return consists of eighteen tables.
Table 7- Water properties and population
Table 8- Tracks activity installing household selective and optional meters and water demand at recently metered properties.
Table 9- Water treatment and distribution (including the average flows of works and proportions of supplies affected by undertakings or relaxations at the end of the report year; and the requirement for new Section 19 undertakings (or Authorised Departures) during the report year).
- Distribution input covered by work programmes agreed with the DWI (including a breakdown of the average flows of works during the year covered by compliance programmes for specific parameters).
Table 10- Water delivered - volumes (the total volume of water delivered to measured and unmeasured households and non-households).
- Water delivered - components (the assumptions that companies have made in determining their water balance).
Table 10a (i,ii and iii)
- Calculation of the security of supply index on the basis of:
- planned level of service;
- reference level of service; and
- critical period (if the company considers this is important in determining security of supply).
Table 10b(i and ii)
- Tables 10b (i and ii) cover the annual review submission to the Environment Agency. The Environment Agency use the information that companies provide to report on water supply during the year and on the work that companies have been carrying out on their water resources plans. Companies report out-turns against supply/demand components for all resource zones that were operational in the reported year.
Table 11
- Asset balance at April 1
- Changes during the report year (records additions and maintenance of mains, and the burst rate on mains and communication pipe activity).
- Asset balance at March 31 (showing the cumulative effect of the changes during the report year).
- Distribution studies
- Other water service activities (recording the amount of capital maintenance activity carried out in the report year on a number of assets other than water mains and communication pipes; and quality enhancement activity on water treatment works).
Table 11a
- Water treatment works – turbidity.
- The information in this table helps Ofwat identify trends that may indicate declining asset condition at treatment works.
Table 12- Water treatment works: source types and pumping.
- Water treatment works: treatment type.
Table 13- Properties (includes a breakdown of all measured and unmeasured households and non-household properties, including an analysis of the totals connected to the sewerage system and those receiving treatment).
- Population (this records the total connected resident and non-resident populations).
Table 14- Sewage volumes (this records the sewage volumes collected from measured and unmeasured households and non-households, together with the volumes of trade effluent).
Table 15- Sewage - loads (includes a breakdown of the pollution loads arising from the domestic population, trade effluent and tankered loads being treated by the company).
- Sewage - facilities (records the total number of sewage treatment works, numbers of sewage treatment works providing nutrient removal and pathogen reduction, and the treatment capacity available).
- Sewage sludge disposal (records the volume of sludge produced and disposed of, the additional sewage sludge arising from new quality obligations since 2005 and the percentage of unsatisfactory sewage sludge disposal).
Table 16- Asset balance at April 1.
- Changes during report year (recording additions and maintenance of sewers and the number of sewer collapses).
- Asset balance at March 31 (showing the cumulative effect of the changes during the report year).
- Intermittent discharges (recording the total number of intermittent discharges and those which are unsatisfactory).
- Drainage area plans.
- Other sewerage service activities (recording the amount of capital maintenance activity carried out in the report year on assets other than "critical" and "non-critical" sewers. It also records quality enhancement activity on sewage treatment works.).
Table 16a- Enhanced measures for sewage pumping stations (including the total number of sewage pumping station failures, including failures at terminal pumping stations causing flooding incidents and the number of flooding incidents due to pump failure in the report year).
- Enhanced measures for sewerage assets (including the total number of sewer collapses and sewerage equipment failures in the report year, and highlighting those sewer collapses and equipment failures which have caused flooding incidents).
Table 16b- Sewage treatment works – BOD (biochemical oxygen demand) performance.
- Sewage treatment works – SS (suspended solids) performance.
- Sewage pumping stations – NH3 (ammonia) performance.
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