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Improving and managing universal services of water and sanitation
in a holistic manner is critical to achieving the Sustainable
Development Goals, and addressing the needs of millions of people
around the world. Ensuring access to water services is a key factor
in working towards the SDGs, and water service delivery planning
can support utilities in improving provision of these services. A
service delivery plan identifies the actions required and
associated costs for achieving a defined level of water services
delivery over a defined period of time. This publications is a
guideline or how-to manual on preparing water service delivery
plans with a focus on small to medium sized organised water
utilities having with approximately 5,000 to over 100,000
connections mainly in areas with limited capacity and resources.
The manual is simplified enough to ensure that these utilities are
able to move from a situation where they are struggling to deliver
water services to where basic service levels in terms of water
quality, quantity, accessibility, reliability, affordability, and
acceptability are met. Meeting these basic service levels provides
a strong foundation for the utility to progressively move up the
ladder of delivering improved services.
There are 2.4 billion people without improved sanitation and
another 2.1 billion with inadequate sanitation (i.e. wastewater
drains directly into surface waters), and despite improvements over
the past decades, the unsafe management of fecal waste and
wastewater continues to present a major risk to public health and
the environment (UN, 2016). There is growing interest in low cost
sanitation solutions which harness natural systems. However, it can
be difficult for wastewater utility managers to understand under
what conditions such nature-based solutions (NBS) might be
applicable and how best to combine traditional infrastructure, for
example an activated sludge treatment plant, with an NBS such as
treatment wetlands. There is increasing scientific evidence that
treatment systems with designs inspired by nature are highly
efficient treatment technologies. The cost-effective design and
implementation of ecosystems in wastewater treatment is something
that exists and has the potential to be further promoted globally
as both a sustainable and practical solution. This book serves as a
compilation of technical references, case examples and guidance for
applying nature-based solutions for treatment of domestic
wastewater, and enables a wide variety of stakeholders to
understand the design parameters, removal efficiencies, costs,
co-benefits for both people and nature and trade-offs for
consideration in their local context. Examples through case studies
are from across the globe and provide practical insights into the
variety of potentially applicable solutions.
By 2025, two thirds of the world's population will be living in
water stressed conditions. Meanwhile, the degradation of water
ecosystems is occurring at alarming rates. Water utilities and
water regulators that choose to play an active role in catchment
management with nature based solutions (NBS) are uniquely
positioned to help. Building a robust knowledge base and supporting
opportunities for cross-sector collaboration are fundamental to the
mainstreaming of NBS. The International Water Association (IWA) and
The Nature Conservancy (TNC) are working together to encourage and
facilitate active utility involvement in NBS, as well as promoting
stronger connections between water utilities and regulatory bodies.
Implementation of NBS involves multiple, interdependent
stakeholders at various governance levels, and consequently
regulators a key role in creating the enabling environments for
these interactions and negotiations. This publication taps into
diverse geographies and contexts, delving into case studies for a
richer conversation that addresses the variety of challenges and
elements for success for integrating NBS into water utility
operations and planning. By publicizing successful case studies,
the IWA/TNC partnership fulfils a dual purpose of endorsing these
efforts and providing actionable guidance for other water utilities
striving to improve their sustainability and resiliency.
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