From Sewage to Sanctuary: How IWK Eco Park Reimagines Wastewater Infrastructure as an Inclusive Urban Green Space

Table of Contents

1. Key Highlights
2. Introduction
3. Rise & Revive: Fitness, Funds and Inclusion
4. Beneath the Green: Pantai 2’s Underground Sewage Treatment Plant
5. Designing a Park Over Infrastructure: Landscape, Biodiversity and Community Gardens
6. Changing Perceptions: From Stigma to Stewardship
7. Kuala Lumpur’s Shrinking Green Cover and the Push for a “City for All”
8. Can This Model Be Scaled? Technical and Institutional Considerations
9. Measuring Impact: Environmental, Social and Economic Returns
10. Community Programming as Infrastructure Maintenance
11. Practical Tips for Visitors and For Event Organisers
12. Risks, Challenges and Lessons Learned
13. International Parallels and Local Adaptations
14. What Comes Next for IWK Eco Park and Kuala Lumpur
15. FAQ

Key Highlights

• IWK Eco Park in Pantai Dalam sits atop Malaysia’s first underground sewage treatment plant and integrates treated water and organic byproducts into a thriving public park and community gardens.
• Rise & Revive, a community wellness event hosted by Indah Water Konsortium (IWK), raised RM8,330 for disability organisations and showcased how infrastructure-led green spaces can promote inclusion and public engagement.

Introduction

A Sunday morning fitness session at a sewage treatment plant would ordinarily sound like a nonstarter. At IWK Eco Park in Pantai Dalam, attendees accepted the invitation, unrolled yoga mats, jumped into Poundfit and Flyjam classes, and left with more than a good sweat. They departed with a clearer idea of how urban infrastructure can be reimagined as community amenity: a park, a classroom for sustainability, and a platform for social inclusion.

IWK Eco Park is unusual by design. The park sits directly above the Pantai 2 Regional Sewage Treatment Plant — Malaysia’s first fully underground wastewater facility. Out of sight, the plant treats wastewater for roughly 1.43 million residents. On the surface, the site functions as an open, green refuge stocked with more than 2,000 trees, community vegetable plots, flowing water features, and a calendar of public activities. The park’s latest public-facing moment, Rise & Revive, paired wellness programming with a fundraising drive that delivered tangible benefits to disability organisations while reframing public attitudes toward wastewater infrastructure.

This article examines the Rise & Revive event and the park it celebrated, places the project within Kuala Lumpur’s broader urban greening ambitions, explores the technical and social strategies that make a “park above a plant” viable, and considers whether the model can be scaled to cities facing similar green-space and infrastructure pressures.

Rise & Revive: Fitness, Funds and Inclusion

Rise & Revive brought together fitness enthusiasts, performers, community groups, and a cross-section of Kuala Lumpur residents for a morning of movement and music — and for a clear purpose. The event, organised by IWK in partnership with Prahara Studio under the Sahabat Istimewa initiative, combined familiar wellness formats with a focused social objective: to empower persons with disabilities (PWDs) and to channel proceeds toward local disability charities.

Programming featured a mix of accessible and popular classes. Yoga instructor and performer Atilia Haron led a mindful session that married breath work with gentle, stabilising poses suited for mixed-ability participants. Mimifly guided an energetic Flyjam session that mixed dance and cardio, while fitness coach Hanis ran a Poundfit workout blending drumming rhythms with high-intensity moves. The morning culminated in live performances by Mimifly and Atilia, reinforcing the event’s feel-good energy.

Participants purchased tickets that directly funded two beneficiary organisations: Persatuan Kebajikan Ahsana Kuala Lumpur (PKAKL) and the Malaysia Federation of the Deaf (MFD). Ticket sales raised RM8,330, and IWK confirmed the full amount was directed to these groups. The presence of PKAKL and MFD at the event underscored the program’s accessible intent: members from both organisations took part in the activities, ensuring the morning was not only about fundraising but also about participation and visibility.

What Rise & Revive accomplished in a few short hours mirrored longer-term objectives. It turned an infrastructure site into a community stage, where people living with disabilities could exercise, socialize and be seen in a public space that recognises them as valued participants. The event also functioned as an educational moment — a low-barrier way for residents to interact with facilities usually hidden from view.

Community-led events play multiple roles in projects like IWK Eco Park. They attract visitors who may otherwise never cross the park’s threshold; they provide volunteers and organisers with opportunities to test the site’s accessibility; and they generate public goodwill that can justify further investment in maintenance and programming. In this case, the immediate social return — the RM8,330 donation and the inclusive participation — sits alongside a subtler but equally important outcome: shifting public perceptions about wastewater infrastructure and its potential to host civic life.

Beneath the Green: Pantai 2’s Underground Sewage Treatment Plant

The juxtaposition at IWK Eco Park is literal and instructive: above ground, a curated natural environment; below ground, a major wastewater treatment system. The Pantai 2 Regional Sewage Treatment Plant serves parts of Kuala Lumpur and Petaling Jaya and handles wastewater from an estimated 1.43 million residents. What sets it apart nationally is its subterranean design.

Underground treatment plants respond to a simple urban constraint: land is scarce and expensive. Burying treatment infrastructure frees surface space for parks, buildings or transport, and reduces the visible footprint and associated nuisances. Done correctly, such facilities keep odours, noise and operational equipment out of public view while maintaining the full functionality of a conventional plant. The Pantai 2 facility demonstrates how infrastructure and amenity can coexist when engineering, landscape design and community programming are coordinated from the outset.

A critical element of that coordination is resource recovery. Modern wastewater treatment is not simply about removing pollutants before discharge; it is increasingly about converting waste into usable outputs. The park takes advantage of two byproducts: treated water and bio-organic materials. Treated or “bio-effluent” water sustains the park’s water features and irrigation systems. Organic matter recovered from treatment — often stabilised biosolids that can be composted and processed into soil amendments — nourishes the community gardens and tree plantings.

This integration closes local resource loops. Instead of importing irrigation water and commercial fertilisers, the park reuses on-site outputs, reducing operational costs and embodied environmental impacts. It also creates an educational narrative about circularity that event organisers can highlight: the same system that manages urban wastewater produces the water and soil used to grow plants that improve air quality and offer shade for park-goers.

Operationally, subterranean plants require careful design solutions. Adequate ventilation, redundant power and safe access routes for maintenance crews are non-negotiable. Effective odour control systems and modern treatment technologies minimise any potential negative impacts on adjacent recreational spaces. Engineering controls must be paired with transparent management and regular monitoring so that the surface function — public recreation — is never compromised. The IWK model suggests those safeguards are in place and that the plant is functioning as intended.

Designing a Park Over Infrastructure: Landscape, Biodiversity and Community Gardens

The aesthetic and ecological successes of IWK Eco Park follow from deliberate design choices. More than 2,000 forest trees have been planted across the grounds, creating a canopy that moderates temperature and provides habitat. Garden beds cultivate vegetables, herbs, fruits and flowers. Streams and water features circulate treated water. Each landscape element serves multiple purposes: amenity, microclimate regulation, biodiversity support and material reuse.

Community gardens deserve particular attention. These plots are not ornamental alone; they teach residents how to grow food, build social connections, and tangibly benefit from the plant’s circular outputs. Using biosolids-derived compost responsibly — after appropriate treatment and quality assurance — supports productive soils for edible crops. Other cities have shown that community gardens increase food literacy and encourage sustainable consumption habits among urban residents.

Ecosystem services flow directly from these design choices. Tree canopy reduces surface temperatures and provides shade — an important countermeasure to the urban heat island that afflicts fast-developing tropical cities. Vegetation filters particulate matter and sequesters carbon, albeit on modest scales per tree; cumulatively, green corridors and expanded tree cover make a measurable difference in local air quality. Permeable planting areas and bioswales on park surfaces retain and slow stormwater, reducing runoff volumes and relieving pressure on drainage networks.

Designing over an operational plant also forces landscape architects to think vertically. Soil depths, root zones and tree species selection must align with structural constraints above the treatment facility. Lightweight planting media, shallow-rooted tree species, and modular raised beds are common strategies. Paths and gathering spaces are sited where surface loads are predictable and where access for maintenance is manageable without interfering with plant operations.

Crucially, the design emphasises accessibility. Wide, level pathways, signage and seating invite a broad demographic to use the space: families, older adults, people with disabilities. The Rise & Revive event proxied the park’s accessibility ambitions; the attendance of PKAKL and MFD showed the grounds could support activities for PWDs when programming and physical access are intentionally considered.

Changing Perceptions: From Stigma to Stewardship

Wastewater infrastructure often bears a stigma. Sewage evokes images of foul odours and unsanitary conditions, so the idea of sitting above a treatment plant may seem counterintuitive for recreation. IWK Eco Park challenges that instinct. Through careful engineering and thoughtful programming, the site reframes the underlying facility as an asset rather than a liability.

Events like Rise & Revive play a central role in that reframing. They provide positive, memorable interactions between the public and a site that would otherwise remain anonymous. Music, movement and community presence help transform the park into a place of wellbeing, and public familiarity reduces anxiety. Mailing lists, guided tours and interpretive signage can build on those experiences to cultivate a stewardship mindset. When local residents take pride in a park, they are likelier to support maintenance, report issues and advocate for similar projects.

International projects show how perception changes when infrastructure is humanised. Madrid Río transformed a highway corridor into an extended park by burying the M-30 and creating new surface spaces that stitch together neighbourhoods. The High Line in New York turned a derelict elevated rail line into a celebrated urban park that drew millions of visitors and spurred adjacent development. Both projects required public campaigns and sustained investment to build support, and both illustrate the social power of reusing infrastructure to create new kinds of public commons.

IWK Eco Park’s distinct angle is marrying that social dimension with active resource recycling. Demonstrating that wastewater treatment can yield tangible, positive outputs — water for fountains, compost for community plots, cleaner air under a canopy — helps neutralise negative associations. Over time, consistent programming and transparent environmental reporting will be necessary to cement the park’s reputation as a safe, clean and desirable space.

Kuala Lumpur’s Shrinking Green Cover and the Push for a “City for All”

The IWK Eco Park exists amid a broader urban reality: Kuala Lumpur has lost a considerable share of its green cover over recent decades. Estimates indicate that since 1950, the city has lost around 50% of its green areas. Presently, public parks and green spaces account for roughly 1,808.7 hectares — less than 8% of the city’s total land area. That ridge of diminishing green has consequences for heat, flood risk, public health and social equity.

Kuala Lumpur City Hall (DBKL) has articulated an alternative vision. The city’s structural plan for 2040 envisions transforming KL into a “City for All” with a connected network of parks spanning approximately 200 kilometres. If realised, such a network could vastly increase public access to green space, reduce fragmentation of natural habitats, and deliver measurable improvements in liveability indicators.

IWK Eco Park aligns with that vision by converting an essential bit of infrastructure into an extra square of green. It demonstrates a path forward where limited land resources do not preclude the expansion of parks. Even small interventions — covering above-ground infrastructure, integrating stormwater retention features into streets, repurposing marginal lots for pocket parks — accumulate to shape a more resilient cityscape.

Green space equity remains a critical lens. Urban greening that primarily benefits higher-income districts or catalyses property speculation risks reinforcing inequality. Projects that prioritise access for nearby communities, embed affordable programming, and partner with local organisations reduce the likelihood that parks become exclusive amenities. IWK’s collaboration with disability groups at Rise & Revive suggests a commitment to inclusivity; scaling the model requires that same focus on accessibility and affordability.

Can This Model Be Scaled? Technical and Institutional Considerations

The IWK Eco Park offers a compelling proof of concept, but replication at scale requires alignment across technical, financial and institutional domains.

Technical prerequisites

• Engineering feasibility: Not all treatment facilities can be practically located underground. Geotechnical conditions, water tables, existing utilities and seismic risks influence feasibility. Where subterranean construction is possible, engineers must design for ventilation, maintenance access, odour control and emergency systems.
• Structural design: The surface must support plantings and human use without compromising the plant’s operational envelope. This often means tailored slab designs, modular soil systems and lightweight construction for large trees.
• Environmental controls: Effective treatment technologies must ensure the outputs used on site — water and biosolids — meet safety and quality standards. Clear protocols for reuse, monitoring and public communication are essential.

Institutional and financial factors

• Funding models: Projects require upfront capital for construction and ongoing budgets for maintenance. Public-private partnerships, value capture from adjacent development, and modest user fees for programming can underwrite costs. IWK’s corporate mandate and public ownership make cross-subsidies and mission-driven investment more straightforward; private utilities may need commercial incentives.
• Regulatory frameworks: Wastewater reuse and biosolids application are regulated for health and environmental safety. Clear standards and streamlined permitting accelerate implementation.
• Community engagement: Successful parks rely on local stewardship. Early and ongoing engagement with neighbourhood associations, disability advocates, schools and community groups shapes design choices and builds long-term support.

Case studies and analogues Several urban projects offer instructive parallels. Madrid Río and New York’s High Line show how burying infrastructure or repurposing derelict structures can create valuable urban parks. Singapore’s park network and connector system illustrates long-term strategic planning for green corridors in a dense city-state. Each example underscores that political will, funding and consistent programming are as important as engineering.

Scaling the IWK model across Kuala Lumpur — and into other Malaysian cities — would multiply benefits: additional tree canopy, more community gardens, expanded reuse of treated water, and increased opportunities for inclusive programming. The limiting factors are practical: the availability of suitable treatment sites, the financial profile of projects, and the capacity to coordinate across agencies.

Measuring Impact: Environmental, Social and Economic Returns

Quantifying the returns of park-over-plant projects helps justify their replication. Impact assessment should look at environmental, social and economic indicators.

Environmental metrics

• Water reuse volumes: litres of treated effluent repurposed for irrigation and features over time.
• Soil amendment production: tonnes of biosolids converted to compost and applied in gardens and landscaping.
• Tree canopy and biodiversity: number of trees planted, canopy area gained, and changes in bird and insect diversity.
• Microclimate effects: localized temperature reductions during heat events and reductions in surface runoff volumes.

Social metrics

• Visitor numbers and demographics: frequency of use, age groups, representation from persons with disabilities.
• Program participation: attendance at events like Rise & Revive, number of community garden plots allocated, youth engagement.
• Perception shifts: survey data showing changing public attitudes toward the site and infrastructure reuse.
• Equity indicators: proximity of new green spaces to underserved communities and accessibility measures (ramp access, tactile signage, audio guides for visually impaired).

Economic metrics

• Cost savings: reduced expenditure on landscape inputs due to on-site compost and water reuse.
• Local economic activity: jobs created for park maintenance, event staffing, and small vendors during events.
• Property and business impacts: changes in nearby property values and commercial foot traffic — tracked carefully to monitor displacement risks.

Collecting and publishing these metrics fosters transparency and helps civic leaders, utilities and funders make informed decisions. Impact reporting also supports community trust, particularly when projects repurpose outputs that may raise safety or health concerns.

Community Programming as Infrastructure Maintenance

Operational sustainability depends on more than engineering; it depends on people. Regular programming — fitness classes, concerts, markets, workshops — encourages consistent use, which reduces vandalism and supports surveillance by eyes on the ground. Events like Rise & Revive help animate the park and generate small revenue streams that can contribute to upkeep.

Partnerships amplify programming. Local studios, community groups, NGOs focused on disability rights, schools and gardening collectives bring volunteer labour and specialised expertise. For example, Prahara Studio’s involvement in Rise & Revive supplied both fitness programming and organisational capacity. Disability organisations like PKAKL and MFD provide lived-experience insights that can shape event design to be genuinely inclusive.

Volunteering structures are another asset. Citizen plant-care days, composting workshops, and interpretive tours create ongoing relationships between residents and the park. These interactions provide education about wastewater systems and normalise the idea that infrastructure can be a community resource.

Practical Tips for Visitors and For Event Organisers

For readers considering a visit or looking to emulate the success of Rise & Revive, practical considerations improve the experience and accessibility.

For visitors

• Plan for shade and hydration: despite a canopy, KL’s climate can be hot. Bring sun protection and water. The park’s features use treated water; water points for drinking will be managed separately.
• Check event schedules: community programming offers the best way to see the park’s active use. Look for inclusive events and workshops if you want opportunities to participate or volunteer.
• Respect garden plots and signage: community garden areas are often home to shared crops; follow posted rules to avoid disruption.
• Accessibility: IWK has hosted PWD-inclusive events; confirm accessibility details (path gradients, available seating, tactile or audio supports) in advance if you require specific accommodations.

For event organisers

• Coordinate with site managers early: waste-treatment operations may impose constraints on staging, permitted equipment and emergency plans. Notification and joint planning ensure smooth logistics.
• Design for inclusion: choose instructors and formats that are adaptable to mixed-ability groups. Offer sign language interpretation, clear visual signage and quiet zones for those who need them.
• Highlight the circular narrative: incorporate short educational segments explaining where the park’s water and compost come from; this reinforces the sustainability story and provides a unique engagement angle.
• Budget for permits and maintenance contributions: even small events can require post-event cleanup and wear on infrastructure; a modest fee for maintenance can preserve goodwill with park operators.

Risks, Challenges and Lessons Learned

No project is without trade-offs. The IWK model mitigates many risks, but scaling or replicating similar parks requires attention to common pitfalls.

Potential challenges

• Operational complexity: underground treatment facilities complicate maintenance and emergency access. Ensuring safety protocols are up-to-date is essential.
• Public skepticism: initial distrust about pollution or safety can dampen attendance; proactive outreach and transparent monitoring reduce this barrier.
• Long-term funding: capital costs are significant, and operational budgets must be sustained to prevent degradation of park amenities. Reliance on ad-hoc events alone is insufficient.
• Equity concerns: improvements that raise nearby property values can produce displacement pressures. Policies to protect vulnerable residents and prioritise community access are necessary.

Lessons from IWK Eco Park

• Integration matters: the park’s success hinges on aligning engineering, landscape design and community programming from the earliest stages.
• Closed-loop messaging resonates: visitors respond positively to tangible sustainability narratives when they can see and touch the reused water and composted soils.
• Inclusive programming amplifies impact: inviting disability organisations to participate ensured the park served a broader constituency and reinforced social value.
• Metrics support credibility: ongoing monitoring of environmental and social outcomes strengthens the case for continued investment.

International Parallels and Local Adaptations

Cities worldwide are rethinking how infrastructure and public space interact. The specific technical approach — constructing an underground treatment plant with a park above — will not be universally applicable. However, the broader principle holds: identify underused or visually intrusive infrastructure, and reframe it as public benefit.

Examples that illuminate possible adaptations:

• Madrid Río: burying a ring road and replacing it with linear parkland that connects previously divided neighbourhoods. The project improved mobility and public space continuity.
• High Line (New York): repurposing an elevated freight rail line into a linear park that catalysed cultural programming and urban regeneration.
• Cheonggyecheon (Seoul): daylighting a stream and removing elevated roadways to restore ecological function and public access while cooling the urban core.

Each of these projects required political will, consistent funding, and active public engagement. Kuala Lumpur’s 2040 plan offers similar ambition; the IWK model adds a resource-recovery twist that aligns well with circular-economy goals.

Local adaptation suggests hybrid strategies. Where underground treatment is infeasible, cities can:

• Convert decommissioned industrial sites into parks with integrated stormwater treatment.
• Bury or reconfigure highways and large arterial infrastructure to create surface parkland.
• Create rooftop parks on municipal buildings or covered reservoirs.
• Integrate small-scale water reuse and green infrastructure into streetscapes and public housing estates.

The guiding logic remains: combine technical feasibility with community needs and fund the long-term stewardship that keeps green spaces healthy.

What Comes Next for IWK Eco Park and Kuala Lumpur

IWK Eco Park’s profile will grow as it hosts more public events, expands community garden programmes, and provides a model for utility-led amenity creation. The park aligns with Kuala Lumpur’s strategic ambition for more connected green spaces, and it contributes to an evidence base that infrastructure can be multifunctional.

For DBKL and other agencies, the critical next steps include scaling pilots where appropriate, embedding equity safeguards in greening policies, and securing maintenance funding streams that do not rely solely on short-term events. For civil society, partnerships that bring expertise — in disability access, urban agriculture, biodiversity monitoring and environmental education — will enrich the park’s public value.

Ultimately, the park’s future depends on continued alignment among IWK, city planners, community organisations and residents. If that alignment persists, IWK Eco Park will remain both a public sanctuary and a showcase for how modern cities can convert essential but unattractive infrastructure into civic benefit.

FAQ

Q: What is IWK Eco Park and where is it located?
A: IWK Eco Park is a public green space in Pantai Dalam, Kuala Lumpur, developed above the Pantai 2 Regional Sewage Treatment Plant. It combines woodland plantings, community gardens and water features with a surface designed for recreation and events.

Q: Is it safe to visit a park built over a sewage treatment plant?
A: Yes. Modern underground treatment facilities are engineered to control odours, noise and emissions. Treated effluents and biosolids used on site are typically processed to meet safety standards before reuse. The park is designed to separate public areas from operational systems and to provide safe access and amenities.

Q: How does the park use treated wastewater and organic byproducts?
A: Treated water is reused for irrigation and water features, reducing demand for potable water. Organic byproducts from the treatment process — after appropriate stabilisation and composting — are used as bio-organic materials to improve soils for tree plantings and community gardens.

Q: Who benefits from events like Rise & Revive?
A: Rise & Revive combined wellness programming with fundraising and inclusion objectives. Ticket proceeds raised RM8,330 for Persatuan Kebajikan Ahsana Kuala Lumpur (PKAKL) and the Malaysia Federation of the Deaf (MFD). Events also provide recreational opportunities and visibility for persons with disabilities.

Q: How does this project fit into Kuala Lumpur’s wider green-space plans?
A: The park aligns with Kuala Lumpur City Hall’s long-term vision to expand and connect green spaces across the city. DBKL’s planning documents aim to increase park networks and improve access to recreational spaces for all residents by 2040.

Q: Can other cities replicate this model?
A: Elements of the model are scalable, but replication depends on local engineering feasibility, funding, and governance. Where underground construction is impractical, cities can still integrate green infrastructure with wastewater treatment, retrofit existing sites, or repurpose degraded land for parks that incorporate water reuse and circular practices.

Q: How can I support or get involved with IWK Eco Park?
A: Participate in public events, volunteer for garden days, join community workshops, or support beneficiary organisations like PKAKL and MFD. Event organisers should coordinate with park managers for permits and accessibility planning.

Q: Will the presence of the park increase nearby property values and risk displacement?
A: Urban greening can influence property values. Safeguards such as affordable housing policies, community land trusts, and inclusive programming can mitigate displacement risks. Local authorities and community groups should monitor socioeconomic impacts as green projects develop.

Q: Are there plans to create more parks over infrastructure in Kuala Lumpur?
A: Kuala Lumpur’s structural plan encourages expanded green networks and multifunctional public spaces. While not every plant or piece of infrastructure will be suitable for above-ground parks, the IWK Eco Park provides a model that local planners and utilities may adapt in appropriate locations.

Q: Who manages the park and the treatment plant?
A: The park and the adjacent underground wastewater treatment plant are part of Indah Water Konsortium’s (IWK) operations. IWK manages treatment functions and coordinates public programming, often in partnership with local studios, NGOs and community groups.

If you have additional questions or would like to learn about upcoming events at IWK Eco Park, contact IWK or local event organisers for the latest schedules and accessibility information.