 |
answer text |
<p>Over the past 25 years, the water industry has spent over £25 billion on sewage
treatment works and sewerage system upgrades driven by environmental directives to
improve water quality. This has delivered a 61% reduction in the amount of polluting
phosphorus and a 72% reduction in the amount of ammonia discharged from wastewater
treatment works since 1995. In addition, 7,000 combined sewer overflows have been
improved, reducing the impact of pollution from sewage discharges.</p><p><em> </em></p><p>In
the current investment period (2015-2020) the water companies are investing over £3
billion to improve their sewage treatment and sewerage infrastructure. During the
next investment period (2020-2025), plans have been put forward to deliver over £4.5
billion on environmental improvements. These include:</p><p> </p><p>(a) Modernisation
of around 2,300 wastewater treatment works to meet environmental quality standards
such as those required by the Water Framework Directive, Bathing Waters Directive
and Urban Wastewater Treatment Directive.</p><p> </p><p>(b) Increasing the capacity
of around 550 wastewater treatment works and storm tanks to ensure that they are treating
the correct amount of sewage flow and to accommodate future growth.</p><p> </p><p>(c)
Investing in sewerage infrastructure improvement to monitor and reduce the frequency
and volume of storm sewage discharged from combined sewer overflows.</p>
|
|
