The South East Rivers Trust (SERT) is inviting local residents to come and celebrate the newly-created Chamber Mead wetlands with a day of family fun, activities and guided tours.
The celebration day on Saturday 20th April will give nature lovers the chance to add plants to this critical pollution buster for the River Hogsmill, a precious chalk stream.
Families will also have the chance to learn about the health of the river by taking part in riverfly demonstrations, a scavenger hunt and nature craft activities. Guided tours of the wetlands will also be part of the day, which runs from 11am to 3pm.
The open day begins a fortnight of planting opportunities for schools and community groups. All the plants have been specially selected to absorb pollutants and attract pollinators and an increased range of wildlife across the Hogsmill Local Nature Reserve.
An aerial view of Chamber Mead wetlands
The wetlands in Ewell now divert urban pollutants from the Green Lanes Stream away from the Hogsmill, one of only 200 chalk streams in the world. Once filtered water is fed back into the river just downstream of the famous Stepping Stones, another 5km of waterway is protected as it flows into south London all the way to the Thames.
Dr Bella Davies, Co-CEO of SERT, said: “We’re thrilled to be giving the community the chance to learn all about Chamber Mead wetlands and crucially give people the chance to complete the project. The public have been very supportive of the wetlands from the start and adding plants is a wonderful opportunity to attract new wildlife not only to the water but the wider nature reserve. This will fulfill the potential of the wetlands to become another jewel in the crown of the reserve and make it an even bigger asset for the community. We’re excited to see the results in years to come on the Hogsmill, which should be a haven for brown trout, water voles and native crayfish, among other species which need our help in recovering their numbers.”
Councillor John Beckett, Chair of the Environment Committee at Epsom & Ewell Borough Council, said: “We are overjoyed to be able to join SERT on the Chamber Mead Wetlands Open Day, to celebrate the fantastic work that has been done here to boost biodiversity and reduce pollution in the Hogsmill River. I hope that residents will join us to help complete the project, which will ensure the Hogsmill River Local Nature Reserve is a place where wildlife and nature can thrive, and one that we can enjoy for many years to come.”
An example of wetlands planting
Supported by the Hogsmill Catchment Partnership, the project has received funding from The Coca-Cola Foundation, Natural England (through the Species Recovery Programme), the Environment Agency, Surrey County Council, the Rivers Trust, the Zoological Society of London, Garfield Weston Foundation and Thames Water, with in-kind support from the landowner Epsom & Ewell Borough Council. The new wetlands are part of the wider Replenish programme in partnership with the Coca-Cola Foundation and the Rivers Trust. The aim of Replenish is to restore millions of litres of water in this and other local catchments, in turn improving biodiversity.
The public can meet the South East Rivers Trust and other partners for the activities at Green Lanes, Ewell, Surrey KT19 9SZ.
Speeches to officially open the wetlands will take place from 11.30am to noon. These will be by Jackie King, Chief Executive of Epsom & Ewell Borough Council, Dr Bella Davies, Co-CEO of the South East Rivers Trust, and The Worshipful Mayor of Epsom & Ewell, Councillor Rob Geleit, who will also cut the ribbon to officially open the wetlands.
The South East Rivers Trust (SERT) has completed the construction of a 2,000m2 pollution filter which will bring major benefits to the Hogsmill chalk stream.
When planting takes place in the spring, the newly constructed Chamber Mead wetland will protect and improve 5km of river downstream, filtering pollutants and becoming a haven for wildlife.
The wetlands took shape during several months of construction
The project has been carried out in partnership with Epsom & Ewell Borough Council, which owns and manages the Hogsmill Local Nature Reserve, a popular greenspace which will now benefit from this new community asset.
The wetland is a crucial project for the Hogsmill, which suffers adversely from pollution such as urban road runoff, raw sewage discharges and misconnected plumbing that sends drain water directly into the river.
Water from the Green Lanes Stream has been diverted through a sediment trap and two wetlands. Filtered, cleaner water is then reconnected to the Hogsmill downstream of the famous Stepping Stones.
News about the wetland’s completion comes in the week of World Wetlands Day, on Friday 2nd February.
Dr Bella Davies, Co-CEO of SERT, said: “We are delighted that the construction phase of this important wetlands project has now been completed. It is destined to become a jewel in the crown of the Hogsmill Local Nature Reserve. The public has shown great enthusiasm for this project, and we will soon be calling on volunteers and community groups to add the plants that will really make the wetlands flourish as a magnet for wildlife. The water quality improvements that will result from the wetlands are designed to help the river become a healthier place for all, especially wildlife that thrive in a chalk stream, such as brown trout.”
Councillor John Beckett, Chair of the Environment Committee at Epsom & Ewell Borough Council, said: “The council is committed to protecting and enhancing biodiversity in our borough, as per our Biodiversity Action Plan 2020-30. This partnership project with the South East Rivers Trust will help to ensure that the Hogsmill Local Nature Reserve is a place where nature can thrive; from woodpeckers, hedgehogs and bats – to species whose numbers have dwindled such as water voles, fish and eels. We know our residents cherish this Local Nature Reserve and I hope that many can join the community planting days, which are a unique opportunity to be part of this fantastic project.”
Michele Cooper, Environment Agency Catchment Coordinator, added: “In partnership with local communities, the Environment Agency is investing millions in chalk stream restoration projects across the country to foster more sustainable abstraction, tackle pollution from agriculture and the sewage system, and restore more natural processes.
“Chalk streams are precious habitats, havens for wildlife and highly valued by local communities and visitors alike. Together with our partners, we also continue to work hard to protect and enhance wetland habitats to benefit people and nature. Their future depends on collective action and this partnership project is therefore a much needed and welcome step towards addressing the many pressures these rare watercourses face.”
The construction of the 2000m2 wetlands at Chamber Mead has been completed
SERT is now preparing a series of community planting days, to take place in the Spring. These will give residents the chance to plant the vegetation to help the wetlands counter pollutants.
Schools, community groups and residents will be given opportunities to install plants that have been specifically selected to filter pollution, trap sediments and attract a variety of wildlife. Plants selected include yellow flag iris, ragged robin, purple loosestrife and brooklime.
In time, SERT will also offer guided walks and outdoor education sessions for school children. A nature trail is planned for families to interact with the wetlands as they develop, alongside information boards which will detail the reasons why the wetlands were needed and the types of wildlife that should be attracted.
The construction was carried out with Five Rivers environmental specialists.
Supported by the Hogsmill Catchment Partnership, the project has received funding from The Coca-Cola Foundation, Natural England (through the Species Recovery Programme), the Environment Agency, Surrey County Council, the Rivers Trust, the Zoological Society of London, Garfield Weston Foundation and Thames Water, with in-kind support from the landowner Epsom & Ewell Borough Council. The new wetlands are part of the wider Replenish programme in partnership with the Coca-Cola Foundation and the Rivers Trust. The aim of Replenish is to restore millions of litres of water in this and other local catchments, in turn improving biodiversity.
The Chamber Mead wetland will become a ‘jewel in the crown’ of the Hogsmill Local Nature Reserve
On 2nd October water company business plans for 2025-2030 were submitted to Ofwat, who will scrutinise them to determine whether they represent value for money for water bill payers.
Earlier in the year, we asked you to have your say about water companies’ draft Water Resources Management plans. Six months on, these have been updated to final plans, alongside ‘Drainage and Wastewater Management’ plans – which focus on the dirty side of the water equation. These two plans form the basis for how water companies will manage water and sewage for the next five years and underpin the just-released business plans.
Below, we assesses the updated plans from Affinity Water, South East Water, Southern Water, SES Water and Thames Water – the companies operating across the South East Rivers Trust’s (SERT) area.
You can still have your say
We’re urging you to take further action to ensure these plans leave our rivers and the environment in a better state.
Now that plans have been submitted, Ofwat is encouraging you to continue to have your say and question the companies about the details.
This autumn, the companies will host Your Water, Your Say sessions (listed at the bottom of this blog). You will be able to speak to water company representatives, in groups and online, about their plans.
Alternatively, you can write to the Secretary of State for the Environment with your comments at water.resources@defra.gov.uk or fill in a survey about the plans, by 1st December.
What are these plans and why do we care?
Over abstraction from rivers for our water supplies affects wildlife
Water Resources Management Plans (WRMPs) set out how water of sufficient quantity and quality will be supplied to the population for the next 50 years.
This is a massive challenge in the south east, where we face a shortfall of 2.6 billion litres if nothing is done.
The WRMPs include plans to build new ‘supply schemes’ such as reservoirs, water recycling plants and water transfers from other regions, as well as ‘demand measures’ – for example by fixing leaks and encouraging wise water use – to reduce water use per person.
At SERT, we care about these plans because ultimately water for use in our homes and businesses is pumped from rivers and groundwater aquifers, which also feed many waterways and their habitats. As climate change bites and the population grows, demand for water is increasing; if water resources are not managed appropriately, rivers and wetland environments will suffer.
Meanwhile, Drainage and Wastewater Management Plans (DWMPs) set out how sewer and drainage systems will be upgraded to cope with population growth and peaks in surface water as rainstorms become more frequent and intense with climate change.
Clearly, the current sewage treatment system isn’t fit for purpose, with raw sewage spilling into rivers and coastal areas on a near daily basis. SERT wants the DWMPs to ensure sewage systems are upgraded at pace and measures are implemented to slow the flow of stormwater into sewers and prevent sewer overflows. This is the first time that water companies have been obliged to develop DWMPs and we welcome their existence.
Do the updated plans respond to our calls for change?
Earlier in the year, we responded to consultations on the WRMPs, and a year ago to consultations on the DWMPs.
Leakage – some improved promises made
SERT, along with many customers and stakeholders, have urged the water companies to do more to tackle leakage.
Water companies in the region are aiming for the government’s target of 50% leakage reduction by 2050, but now with additional interim targets: 20% by 2027 and 30% by 2032.
Thames Water loses around a quarter of the water it puts into supply through leakage; it is particularly encouraging to see an increase in ambition since their draft plan, which only aimed for a 16% reduction by 2030.
We challenged SES Water to roll out ‘smart’ water meters to all customers, household and non-household, by 2030.
We are delighted the company has committed to doing so. Smart meters will help to quickly identify leaks in homes, schools and other buildings.
Leaks from plumbing in homes and buildings, including ‘leaky loos’, currently account for about a third of leakage. Meters will also help customers use water more wisely.
Per person targets for water standardised
Many respondents to the WRMP consultations, including SERT, urged water companies to have stronger targets for personal consumption of water use. We said that Thames Water’s aim that people should use only 123 litres per person per day lacked ambition, particularly when other water companies in the region were going further.
Therefore we are pleased that all water company plans now meet the Government target of 110 litres per person per day – and with new interim targets.
All water companies have adjusted ‘per person’ water use targets to align with Government aims
For non-household water users – such as businesses, schools, hospitals – water companies are now aligning with the government’s new Environment Improvement Plan target of a 15% reduction in water use by 2050. South East Water, for example, is aiming to achieve this through smart metering for business customers, alongside water efficiency audits and measures to support reductions in water use.
This is welcome given the significant number of ‘thirsty’ businesses in their area, including fruit farms and golf courses.
While it is positive that water companies have stepped up their demand management strategies in response to customer and stakeholder pressure, companies are admitting that the new targets are challenging. Meeting them will require ‘fresh thinking’ and innovative approaches and will rely heavily on the pace of government-led interventions, such as introducing water efficiency labelling on showers and toilets.
Improved positions on reducing unsustainable abstraction
Drought scenes like these will become common without proper plans to supply sufficient water
SERT, alongside many others, supported the most ambitious reductions in water abstraction, particularly from sensitive rivers and aquifers that feed rare chalk streams. We also challenged water companies to increase the pace of abstraction reductions and ensure a robust approach to prioritising them.
So, we are pleased to see that the regional water resources plan looks to deliver reductions more quickly and that further work on prioritisation will be carried out with stakeholders such as ourselves.
In Thames Water’s plan, while we are supportive of abstraction reductions in the Darent valley, we would like to see abstraction reductions in the upper Darent advanced more quickly – this river has been over-abstracted for decades. In the Hogsmill, an over-abstracted chalk stream in south east London, SES Water and Thames Water have been undertaking investigations to establish the effect of abstraction reductions on stream flow.
It is clear there would be a flow benefit of reducing abstraction from the Hogsmill, and we welcome Thames Water’s proposal to reduce abstraction by 10.2 megalitres per day. We urge that this is implemented as soon as possible. We recognise that the shortfall in supply needs to be met but hope that the companies will consider the extra water that would be delivered to London via the Hogsmill itself if flows were increased.
Water supply schemes – big projects going ahead, but…
Improving the size or reservoirs or building more is one solution to water management
While curbing leakage and encouraging wise use of water will be crucial for addressing our water scarcity challenge, the deficit cannot be met entirely with these ‘demand measures’ – water supply solutions will also be needed.
For this reason, we are supportive of reservoir schemes being progressed in the next water company business plans. These include South East Water’s Broad Oak reservoir in Kent and extending Arlington reservoir in Sussex – provided that they are built on the basis of beneficial or negligible impacts to local freshwater habitats.
The long-proposed reservoir near Abingdon in Oxfordshire (Thames Water) is also being progressed, at the larger size of 150 million cubic meters. Despite local opposition, many customers and stakeholders recognise its importance in securing the south east’s water supplies for future generations. From SERT’s perspective, it will also facilitate reducing unsustainable abstraction from sensitive freshwater habitats such as chalk stream headwaters.
We do have concerns about some of the other water resources schemes being proposed, including the Teddington Direct River Abstraction on the Thames, where there are still questions about the impact on the river ecology.
Thames Water insists that the scheme meets the ‘required level of protection set out by the Environment Agency’ and say that the company is conducting more detailed studies and working with the community to understand and address concerns.
Value of nature-based solutions has been recognised
Nature-based solutions help retain water in the landscape for longer and increase biodiversity
Catchment and nature-based solutions are approaches that work with the landscape to retain more water in soils and wetlands.
They allow rainwater to infiltrate into soils and aquifers, replenishing water sources rather than rainwater rushing off the land to cause pollution and flooding.
These approaches offer additional benefits, including increasing habitat for wildlife and carbon sequestration, as well as better value compared to ‘grey’, engineered solutions such as storage tanks and drains.
Encouragingly, after the draft WRMPs only contained one such catchment scheme between them – which was hugely disappointing – last-minute changes to guidance enabled 73 schemes across 24 catchments to be entered into the revised plans.
We welcome the existence of Drainage and Wastewater Management Plans (DWMPs) for the first time.
The targets in the individual DWMPs from each company reflect what has been set out in the Government’s Storm (sewage) Overflow Reduction Plan and in the Defra Plan for Water, published in April this year.
The Government’s plans – if met – mean that 52% of such sewage overflows would be improved by 2040 and all by 2050.
We feel these timelines are too slow. We want cleaner rivers to enjoy now, not in 25 years.
These timelines are also off track to achieve the Water Framework Directive, which requires all rivers to reach Good Ecological Status by 2027 – sewage overflows currently account for 12% of rivers not achieving Good Ecological Status.
We welcome the accelerated rate of tackling sewage overflows in the Thames Water DWMP – with 51% of overflows being improved by 2035. The plan also includes upgrades to 30 sewage treatment works across the Thames Valley by 2030, and the investigation of options for a new sewage treatment plant in the London area.
Southern Water’s DWMP will reduce the use of all their 979 sewer overflows to less than 10 times per year, but only by 2050. However, by 2030 they have committed to reducing the number of spills from sewer overflows by 80%. They say they will start by tackling the overflows that release close to high priority sites, such as shellfish waters, between 2025 and 2030, and bathing sites by 2035.
We welcome the drive in the DWMPs towards nature-based solutions. Southern Water is prioritising the use of these solutions over ‘grey’, engineered solutions to address sewer overflows. There are wildlife, amenity and carbon benefits to these approaches, as well as cost savings: Thames Water says that its plan, which also prioritises nature-based solutions, is two-thirds the cost of a ‘grey-only’ plan.
Verdict
Overall, while we still think some elements of the plans could be fast-tracked, we welcome the increase in ambition since the draft plans.
The business plans amount to £96 billion of investment across England, which is desperately needed to keep our rivers clean and flowing and to ensure plentiful water supplies.
It’s important that customer money is used transparently, responsibly and cost effectively. This is why we urge water companies and government to prioritise nature-based solutions, which offer good value for money, as well as improved resilience to floods and droughts – and benefits for nature.
These should be delivered in partnership with local environmental NGOs that have the expertise and local connection to rivers.
What YOU can still do
Water companies have to demonstrate customer support for their business plans. To enhance and maintain the environmental ambition of these plans in the face of government push back, it’s important that you, as water customers, make your voice heard.
The five-year Business Plans were sent to Ofwat on 2nd October.
Here are the links to the 2025-2030 plan for the five companies in SERT’s area.
The South East Rivers Trust notes today’s judgement at Lewes Crown Court that Thames Water has been fined £3.3million for polluting a section of the River Mole near Gatwick Airport on October 11, 2017.
About 1,400 fish were killed in the incident on the River Mole between Crawley in Sussex and Horley in Surrey.
In a statement, SERT said:
“There is no excuse for polluting rivers which are the lifeblood of our landscapes. This incident decimated fish populations on the Gatwick Stream and impacted the ecology of the river far beyond into the catchment of the River Mole.
“Six years after this pollution incident the river and local angling club are still suffering.
“We welcome Thames Water’s fine, while hoping it would have been higher.
“We are furious to hear the Judge’s conclusion that Thames Water attempted to mislead the regulator.
“They have asked to work with us to help repair the damage by providing £1m in the form of a voluntary reparation to help improve the river’s habitat and water quality that is so important to the local community.”
SERT is already using the voluntary reparation to improve the health and resilience of the Gatwick Stream and other waterways impacted by this pollution event.
The money is being used to fund projects, such as the Caring for Crawley’s Rivers project, that improve the quality of the river habitat, identify and remedy systematic water quality issues in the catchment, and engage local communities in the health of their rivers, including carrying out education sessions.
SERT will also be working to gather data and evidence to support the development and deployment of these remediation projects and to monitor their success.
The launch of our River Loddon Storymap, on behalf of the catchment partnership, allows residents across the area to see the problems faced by the river and the collective actions of around 20 partners in trying to improve the waterways. Residents can also sign up to join in, as individuals or to join the partnership as a group. Lou Sykes, catchment officer for the Loddon, introduces the new Storymap.
Capturing the work of catchments
The Whitewater, a tributary of the Loddon
Since its inception in 2000 as the Wandle Trust working on one river, the South East Rivers Trust (SERT) has grown exponentially and now cares for and maintains watercourses across 12 catchments in the south east of England.
SERT is also long established in the Beverley Brook and Hogsmill catchments, hosting and chairing the catchment partnerships. These lead a variety of organisations to devise ways to assess the issues faced by rivers and create plans to improve them using the Catchment Based Approach (CaBA).
Our growth is such that we now partially or fully host and chair 11 of the 12 catchment partnerships throughout the south east. This area stretches from the Kent coast to the Sussex coast, meandering through Surrey and encompassing much of Berkshire and north Hampshire.
It is for this latter area, the 680 km2 River Loddon catchment, that SERT has now launched a Storymap, capturing the partners, issues and plans to improve the whole network of watercourses. This will be the first in a series of new Storymaps on various catchments that will be released in 2023, funded by Thames Water.
The ArcGIS Storymap portal is a story authoring, web-based application, that enables an organisation to share maps in the context of narrative text and other multimedia content.
Using this facility, SERT’s catchment partnerships can detail the pressures faced by the river networks and introduce objectives for improving rivers and the surrounding areas, as identified by the partnership.
Bringing different groups together to solve the river’s issues
A scene from the Lyde tributary
By creating this presence online, the catchment partnership raises awareness and becomes a supportive group, speaking with one voice. In the case of the Loddon catchment, this brings about 20 different groups together: this better empowers collaborative working and helps to ensure all issues affecting the river are noted, captured and addressed under one umbrella. By working together, the catchment partnership can plan and deliver positive actions that will improve the riparian environment across a whole river network, as opposed to working on sections in isolation.
Leading on the Loddon catchment partnership, SERT brings together people from various local organisations and interest groups including water companies, government bodies, local flood groups and angling clubs.
Giving communities and groups the chance to have their voices heard is crucial to the Catchment Based Approach, empowering them with a sense of ownership as the partnership delivers action on the ground.
Summaries of issues affecting the river range from the general to the specific, such as under water quality. Did you know, for example, that road runoff can carry more than 300 different pollutants which can cause short and long-term damage to watercourses?
Consented discharges on the Loddon
Meanwhile, one of many bespoke maps details the phosphate status of the river network, which rises from chalk-fed streams in Basingstoke and goes all the way to Reading and stretches across to Aldershot. Another map shows the pollution from waste water. Another details the topical issue of sewage spillages.
The extend to which the catchment is affected by flooding, low flows and abstraction is also outlined, with a warning: “The primary risk of flooding in the Loddon catchment is from rivers – and flooding events are being projected to become more frequent and more severe as the climate changes.”
Flood zones and areas most susceptible to flooding, from both rivers and surface water, are shown in another map.
The site also reports the extent to which physical modifications have impacted river health. Like many rivers, the Loddon has been modified over centuries – straightened, widened or deepened – to improve drainage for land, housing, industry and farming.
Habitat quality on the Loddon
River habitat quality is also shown, with just one area rated as having a truly diverse habitat, according to River Habitat Survey methods. Many areas across the catchment have good ranges of habitat, but others are rated as poor. Another map outlines the results of fish surveys, compiled as indications of river health, allowing readers to click on specific areas.
The issues section ends with a warning: “The number of people living in Basingstoke, Wokingham, Sandhurst, Fleet and Aldershot is rapidly growing and these towns have multiple areas of new development proposed between 2023-2040.
“The south east of England is in the midst of a water shortage crisis. Growing populations together with our changing climate pose a severe risk to the health of our rivers. Many of the challenges faced by our river catchments are likely to be intensified by the demands of a growing population.“
So what can be done?
Perch found at Tice’s Meadow in Loddon Rivers Week 2022
A key section of the Storymap is the action plan, outlining “natural processes opportunity mapping” that includes the potential for “floodplain reconnection”, for example lowering artificially incised riverbanks, the potential for riverside woodlands and such opportunities across the wider catchment.
Key priorities are to identify habitat improvements, deliver restoration or enhancements, improve fish passage by tackling barriers, keep rivers cool in the face of a changing climate and tackling invasive species.
It also outlines the benefit of natural capital mapping. “Taking a GIS-based catchment approach to understanding the location, condition and potential of natural assets,” the portal says “allows us to target action to protect water resources and communicate change. This enables us to integrate a catchment-scale nature-based solutions approach with water company plans, catchment partnerships, and landowners.”
Mentioning work that has been carried out on the catchment so far, the portal highlights Loddon Rivers Week, which takes place every September. Last year, residents witnessed instant improvements after taking part in gravel seeding in Hook and installed large woody materials at Tice’s Meadow and Ivy Recreation Ground in Aldershot. Other work on the Loddon involves a long-standing effort to remove Floating Pennywort and creation of the Charvil Meadows backwater in 2020.
Lastly, the Get Involved section prompts people who see issues with their river to report them to the relevant authority, to suggest enhancement protects, join the partnership as a group, volunteer for events or invest in the river by financially supporting enhancement work.
Whatever you want to know about the Loddon, visit the Storymap and get involved!
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