Constructed Wetland Association

What Constructed Wetland Association does

The Constructed Wetland Association (CWA) is a UK-registered nonprofit professional membership association founded in 2000 and headquartered in Slimbridge, Gloucestershire. It exists to promote the application of Constructed Wetland technology — nature-based solutions including horizontal flow wetlands (reedbeds), vertical flow wetlands, surface flow wetlands, and French systems — for water pollution control, covering sewage, surface water runoff, landfill leachate, industrial process water, mine water drainage, and other wastewater streams. The CWA serves professionals in design, installation, consultancy, research, regulation, and operation of constructed wetlands, with members in the UK, Ireland, and selectively across Europe, the Americas, Africa, Asia, and Australasia.

The CWA operates a tiered annual subscription model: Individual (£20), Student and Retired (£10), Lower Corporate/Charity/Public Sector under £10M turnover (£200), and Upper Corporate/Charity/Public Sector over £10M turnover (£600). Members receive access to a members-only website area, a directory listing, a company profile with case studies, reduced conference delegate rates, voting rights at AGMs, and eligibility for the CWA accreditation programme, which provides independent quality recognition valid for 3 years. The association also publishes UK national Design Guidelines for treatment wetlands, Operation and Maintenance Guidance, a Sewage Treatment Wetlands Case Studies report (17 case studies as of March 2025), and maintains the UK & Ireland Constructed Treatment Wetlands map.

The annual conference is the flagship commercial and community event, rotating across UK and Ireland venues — the 2026 edition was held at Glasgow Caledonian University on 12–13 May 2026. The CWA is governed by a committee that recommends fees ratified by members at the AGM. It operates with a 6-person team, is active on X, LinkedIn, and Facebook, and has no disclosed investors, funding rounds, or parent entity. Moir Environmental is referenced as one of the founding members.

Name

Constructed Wetland Association

Legal name

Constructed Wetland Association

Website

https://constructedwetland.co.uk

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

1–10 employees

Short description

The Constructed Wetland Association is a UK-based nonprofit professional membership association promoting constructed wetland technology for water pollution control. It serves designers, constructors, consultants, regulators, and academics via tiered subscriptions (£10–£600/yr), accreditation, an annual conference, design guidelines, and the UK & Ireland wetland map.

Ownership category

akta.pro rank

Product category

Professional Association Services

SIC

Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Water Safety Plans, Training & Documentation (Logbooks, SOPs) (BPABAJAL)

Keywords

• Constructed wetland design
• Water pollution control
• Wastewater treatment systems
• Professional accreditation services
• Reedbed treatment wetlands

Headquarters

HQ city

Not specified

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Personnel, Marketing or Sales, Others

Revenue model

1. Annual Membership Subscriptions: The CWA generates revenue through annual membership fees paid by individuals, students, retired professionals, corporations, charities, and public sector organisations. Fees are tiered by membership category and corporate turnover. The CWA committee has discretion to levy reduced rates in special cases.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

The Constructed Wetland Association (CWA) is a UK-based professional membership association that promotes the use of constructed wetland technology for water pollution control. It offers tiered corporate and individual membership programmes, technical design, build and operation & maintenance (O&M) guidance, an interactive UK and Ireland treatment wetlands map, a case study archive, and an annual conference bringing together wetland professionals.

Product overview

The Constructed Wetland Association is a professional membership organization promoting constructed wetland technology for water pollution control. Its offerings include tiered membership programs (Individual, Student, Retired, Corporate, Charity/NPO, Public Sector) with associated benefits and accreditation services. The CWA provides technical resources including Design Guidelines, Operation and Maintenance Guidance, Case Studies reports, and an interactive UK & Ireland treatment wetlands map. The organization hosts an annual conference featuring keynote presentations, technical sessions, field trips, and networking for wetland professionals.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Vertical flow wetlands can achieve 10:10:5 for BOD, solids, and ammonia on a 95%ile basis (per UK national design guidelines)
• +2 more outcomes

Named customers1 record

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered minor and core.

• Glasgow Caledonian UniversityminorOthers · 1 January 2026Glasgow Caledonian University (70 Cowcaddens Road, Glasgow, G4 0BA, Scotland) hosted the CWA's 2026 annual conference on 12–13 May 2026. The university provided campus facilities for the conference, and the CWA negotiated discounted accommodation rates at local venues for delegates.
• Moir EnvironmentalcoreStrategic or Co-development PartnerMoir Environmental is one of the CWA's founding members and has maintained an ongoing contractual relationship designing, commissioning, and maintaining constructed wetland systems for clients. Moir Environmental was featured in the 2026 conference field trip, showcasing a 1,100 m² horizontal flow reedbed at Hansel social care facility in Ayrshire, which has operated reliably for over twenty years.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• British Water: UK trade association representing the water industry supply chain, including contractors, consultants, manufacturers, and service providers. Broader than CWA, but its corporate membership base overlaps heavily with CWA's corporate members in design, construction, and consultancy.
• Society for the Environment: UK umbrella body registering Chartered Environmentalists, Chartered Ecologists, and related professionals. Comparable registration and standards function to CWA's accreditation programme, but applied across all environmental disciplines rather than wetlands specifically.
• Water UK: Industry body representing all UK water companies and a key voice on water policy and regulation. CWA's public-sector segment overlaps with Water UK's regulatory and utilities audience, though Water UK focuses on the corporate utility side rather than wetland-specific practitioners.
• International Water Association (IWA): Global network connecting water professionals across science, technology, and management. Operates at a much larger international scale than CWA and offers overlapping content and events, but does not specialise in constructed wetlands.
• Environmental Industries Commission (EIC): UK trade association for environmental services and technology companies, including water, waste, and remediation sectors. Overlapping membership base with CWA's corporate segment, but covering the broader UK environmental industry rather than wetlands specifically.

Direct peers

• Wetlands International: Global not-for-profit dedicated to wetland conservation and wise use, with a scientific and policy focus. Closely comparable to CWA's wetland-centric remit but operating at a conservation/policy level rather than as a UK practitioner accreditation body.
• CIWEM (Chartered Institution of Water and Environmental Management): UK-based chartered body for water and environmental professionals, covering water management, environmental policy, and sustainability. CIWEM is CWA's direct peer in the professional water/environmental association space and co-hosted CWA's 25th anniversary webinar in 2025.
• Institute of Water: UK professional body for individuals working in the water industry, offering membership, events, and technical networking. Directly comparable to CWA in mission and audience, though broader in scope across drinking water, wastewater, and operations.

Market position

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/_CWA
• Facebookfacebook.com/Constructed.Wetland.Association
• LinkedInlinkedin.com/company/constructed-wetland-association

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Constructed Wetland Association