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<p>We support the use of blue green infrastructure, such as sustainable drainage systems
and grey water recycling to manage surface water, across existing and new communities.
We have placed a greater emphasis on this in our 25 Year Environment Plan, Flood and
Coastal Erosion Risk Management Policy Statement and updated planning policy.</p><p>We
are currently reviewing the implementation of Schedule 3 of the Flood and Water Management
Act (2010). This schedule introduces standards for new sustainable drainage systems
and makes connection to public sewers conditional on approval of the drainage system
before any construction work can commence. National standards will set out a hierarchy
of destinations for surface water runoff to ensure the most effective drainage system
is delivered that will help alleviate pressures on the sewer network, as well as reducing
flood risk, harvesting rainwater and improving water quality, amenity and biodiversity.</p><p>As
set out in our <a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fquestions-statements.parliament.uk%2Fwritten-statements%2Fdetail%2F2021-07-01%2Fhcws140&data=05%7C01%7Cpqteam%40defra.gov.uk%7C543aa2e2f0b24357ee0408da6bbcaa2b%7C770a245002274c6290c74e38537f1102%7C0%7C0%7C637940755293978692%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hHQN1aYIxbNiaB4jbEqslW22eMpli3A6AGo0KiQsaqM%3D&reserved=0"
target="_blank">Written Ministerial Statement on Water Demand in July 2021</a>, we
are developing a roadmap towards greater water efficiency in new housing developments
and retrofits. This includes the exploration of revised building regulations and how
the development of new technologies can contribute to meeting these standards. We
will ensure that the underlying legislation can, where appropriate, accommodate any
potential future expansion of rainwater harvesting, water re-use and storage options.</p><p>Households
who can show that their premises are not connected to the public sewer for surface
water drainage are already entitled to a bill discount via a surface water drainage
rebate from their water company.</p>
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