Japan Sewage Works Association

What Japan Sewage Works Association does

Japan Sewage Works Association (公益社団法人 日本下水道協会, JSWA) is a public interest incorporated association headquartered in Chiyoda-ku, Tokyo, that functions as the central coordinating body for Japan's municipal sewerage sector. It serves all 47 prefectures and the municipalities and sewerage operators within them, providing a unified framework for technical standards, training, publications, research, certification, and policy advocacy. JSWA operates multiple internal departments covering general affairs, finance, management, training, planning, public relations, international affairs, technical standards, and inspection, with member relations managed through a tiered structure (一種正会員 for municipalities, 二種正会員, and 賛助会員 for corporate supporters). At the end of fiscal year 2025, national sewerage treatment population coverage in Japan stood at 81.8%.

The association's product portfolio spans digital infrastructure, software, certification, insurance, publications, and events. Its flagship digital offering is the 下水道共通プラットフォーム (Suisui Platt), a shared national platform for sewerage pipe ledger management and DX promotion launched in April 2023. Adjacent products include a public-private matching platform (Geマッチング, launched August 2023), a sewerage fee-revision simulation software, certification systems for manufacturing plants and drainage equipment, sewerage liability and cyber insurance programs brokered on behalf of municipalities, a national sewerage database (下水道全国データベース), a monthly professional journal (下水道協会誌), the annual 下水道展 exhibition, and the 下水道研究発表会 research symposium. The most recent additions are the すいすいブック e-book subscription service (free early release announced July 2026) and a public-facing pipe ledger browsing service (launched April 2026).

JSWA generates revenue through four principal streams: annual membership dues (年会費・会員費), publication sales (出版物販売) including books, standards, and the journal (14,520 yen/year subscription), training and seminar fees (研修・説明会参加料), and insurance brokerage commissions on the sewerage liability and cyber insurance programs. Distribution occurs via a member-only website portal, the association's own book purchase site, an external distributor (Tokyo Kanseishuppans), in-person and on-demand training delivered across major Japanese cities, and a rotating national exhibition. The association maintains a long-standing trilateral memorandum with the European Water Association (EWA) and the Water Environment Federation (WEF), dating back to 1999 and most recently reconvened at the 7th joint conference in Sendai in November 2023.

Name

Japan Sewage Works Association

Legal name

公益社団法人 日本下水道協会

Website

https://jswa.jp

Company type

Private

Operating status

Operating

Short description

Japan Sewage Works Association (JSWA) is a Tokyo-based public interest corporation that serves all Japanese municipal sewerage operators with technical standards, training, certifications, publications, a national digital pipe-ledger platform, insurance brokerage, and industry events.

Ownership category

akta.pro rank

Product category

Water and Wastewater Industry Association

NAICS

Administration of Environmental Quality Programs (9241), Administration of Air and Water Resource and Solid Waste Management Programs (924110), Water, Sewage and Other Systems (2213)

SIC

Sanitary Services (4950), Electric, Gas & Sanitary Services (4900), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Water Supply & Wastewater Utilities Administration (BPAIACAG)

akta.pro secondary industries

Municipal Wastewater Collection (Sewer Networks) (BPALAMAA), Sewer Inspection, Condition Assessment & Monitoring (CCTV, Sensors) (EUANACAG), Water & Wastewater Compliance (NPDES/Stormwater, Pretreatment, Drinking Water/SDWA) (EUAHABAB)

Keywords

• Sewerage standards
• Wastewater management
• Public infrastructure research
• Technical publications
• Professional training

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. 年会費・会員費 (Annual Membership Dues): Municipal governments and related organizations pay annual membership dues to belong to the association. Members receive access to publications, guidelines, training programs, Q&A databases, and committee information. Fees vary by member type (一类正会员, 二类正会员, 賛助会员).
2. 出版物販売 (Publication Sales): Sale of technical books, standards, guidelines, journals, and statistical compilations. Includes下水道協会誌 (annual subscription 14,520 yen), design standards, technical guidelines, and specialized handbooks. Sales through Tokyo Kanseishuppans (external distributor) and direct online purchase.
3. 研修・説明会参加料 (Training and Seminar Fees): Revenue from training programs, certification exams, and seminar registrations including下水道職員養成egaard various technical and administrative training courses.
4. 下水道賠償責任保険・サイバー保険 取次業務: The association facilitates下水道賠償責任保険 (Sewerage Liability Insurance) and下水道サイバー保険 (Cyber Insurance) for municipalities, acting as an intermediary.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels7 records

Core offering

Japan Sewage Works Association (公益社団法人 日本下水道協会 / JSWA) operates as the national public interest incorporated association serving Japan's municipal sewerage operators. It delivers technical standards, applied research, publications, training programs, factory and product certification systems, and shared digital platforms including the Suisui Platt (下水道共通プラットフォーム). The association also operates the public-private matching platform Geマッチング, brokerage of sewerage-specific liability and cyber insurance, and the national sewerage database used by municipalities and MLIT.

Product overview

Japan Sewage Works Association operates as an industry association providing a comprehensive portfolio of products and services for Japan's sewage sector. The core offerings include: (1) 下水道共通プラットフォーム (すいすいプラット) - a digital platform for pipe ledger management and DX initiatives; (2) Geマッチング - a public-private matching platform for technology collaboration; (3) certification systems including 認定工場制度 and 排水設備等製品認証制度 for equipment quality assurance; (4) insurance products (下水道賠償責任保険, 下水道サイバー保険); (5) software tools like 下水道使用料改定シミュレーションソフト; (6) publications including 下水道協会誌, 下水道経営ハンドブック, and technical guidelines; (7) data services such as 下水道全国データベース; (8) sludge recycling programs (下水汚泥の肥料利用/じゅんかん育ち); (9) events including 下水道展 exhibitions and 下水道研究发布会; and (10) training programs. The association also offers subscription e-book services (すいすいブック) and operates national databases for the sewage industry.

Differentiator

Problem solved

Functional benefit

Products and services

• Suisui Platt (下水道共通プラットフォーム) Shared digital platform for municipal sewerage operators that enables joint use of core sewerage information systems (pipe ledger, facility ledger, BCP support) to standardize and consolidate IT infrastructure across local governments.
• Ge Matching (Geマッチング) Public-private matching platform connecting municipalities with private sector companies for sewerage-related technology introduction, PPP/PFI consulting, and business matching opportunities.
• Sewerage Fee Revision Simulation Software (下水道使用料改定シミュレーションソフト) Simulation software for municipal sewerage operators to model and plan fee schedule revisions based on financial projections and usage patterns.
• Certified Factory System (認定工場制度) Certification program that verifies and certifies sewerage equipment manufacturing factories meet national standards for production capability and quality control.
• Drainage Equipment Product Certification System (排水設備等製品認証制度) Product certification system that evaluates and certifies drainage equipment and related products for compliance with sewerage technical standards.
• National Sewerage Database (下水道全国データベース) Centralized database that aggregates operational, financial, and asset data from municipal sewerage operators across Japan for sector analysis, policy reference, and reporting.
• JSWA Journal (下水道協会誌) Monthly technical journal publishing research, technical commentary, and sector news for sewerage professionals and municipal staff, available by annual subscription.
• Sewerage Liability Insurance (下水道賠償責任保険) Group liability insurance program brokered for municipal sewerage operators to cover third-party bodily injury, property damage, and other claims arising from sewerage operations.
• Sewerage Cyber Insurance (下水道サイバー保険) Group cyber insurance program for sewerage operators providing coverage for IT system disruptions, data breaches, and cyber incidents affecting sewerage operations.
• Suisui Book (すいすいブック) E-book subscription service offering technical sewerage publications and reference materials in digital format on a monthly subscription basis.
• Management Improvement Support Tool (経営改善支援ツール) Version 2.0 Decision-support tool for municipal sewerage operators that helps analyze financial and operational data to identify efficiency improvements.
• Anaerobic Digestion Process Introduction Support Tool (嫌気性消化プロセス導入支援ツール) Tool to support municipal operators in evaluating and planning the introduction of anaerobic digestion processes for sewage sludge treatment and energy recovery.
• Sewerage Management Support Advisor Program (下水道経営支援アドバイザー制度) Expert advisor dispatch program that sends experienced consultants to municipalities to provide on-site support for sewerage business management, financial improvement, and operational optimization.
• Training and Seminar Programs (研修・講習会) Training and seminar programs covering sewerage technology, operations, financial management, and leadership for municipal sewerage staff and industry professionals.
• Sewerage Exhibition (下水道展) Annual national exhibition showcasing sewerage technology, products, and services for industry professionals, with exhibitor booths and technical presentations.
• Sewerage Research Symposium (下水道研究発表会) Annual research presentation conference hosting technical paper presentations and discussions on sewerage research, technology, and policy.
• Junkansodachi Fertilizer Brand (じゅんかん育ち) Brand certification and promotion program for fertilizer products made from recycled sewage sludge, supporting circular economy and resource recycling in municipal operations.

Quantifiable outcome

• 下水道処理人口普及率 81.8% (national coverage, end of FY2025)

Segments1 record

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Six partnerships are on record, tiered moderate, core and minor.

• クリアウォーターOSAKA株式会社 (Clearwater Osaka Co., Ltd.)moderateStrategic or Co-development Partner · 1 July 2025JSWA signed a partnership agreement with Clearwater Osaka Co., Ltd. for cooperation in the Osaka region sewerage sector. An announcement of the signing ceremony was published on June 24, 2025.
• 太陽光発電協会 (Japan Photovoltaic Energy Association)moderateStrategic or Co-development Partner · 14 June 2024JSWA signed an inclusive cooperation agreement with the Japan Photovoltaic Energy Association to promote solar power generation at sewerage facilities, supporting GX and carbon neutrality goals.
• 欧州水協会 (EWA, European Water Association)coreStrategic or Co-development Partner · 11 May 2024JSWA maintains a trilateral memorandum with EWA and WEF (Water Environment Federation), dating back to 1999. The three associations jointly host the JSWA/EWA/WEF Special Conference approximately every three years. The latest conference was held in Sendai in November 2023.
• 米国水環境連盟 (WEF, Water Environment Federation)coreStrategic or Co-development Partner · 15 November 2023WEF is a key international partner through the trilateral JSWA/EWA/WEF memorandum. Joint conferences are held with EWA and JSWA approximately every three years. The latest 7th JSWA/EWA/WEF Special Conference was in Sendai, November 2023.
• 全国旅館ホテル生活衛生同業組合連合会 (Japan Hotel & Ryokan Association)minorStrategic or Co-development Partner · 10 March 2020Partnership for disaster information sharing — the association signed an agreement for information exchange during disaster events, enabling coordinated response for water infrastructure and hotel/ryokan facilities.
• 下水汚泥リサイクルの各自治体・企業 (Various municipalities and companies in sewage sludge recycling)moderateOthersJSWA runs下水道GX programs promoting green transformation including BISTRO下水道 (sludge-to-resource) and じゅんかん育ち brand fertilizer partnerships with municipalities and agricultural cooperatives. Supports下水汚泥のエネルギー利用 and下水汚泥の建築資材利用.

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Japan Water Works Association (JWWA / 日本水道協会): National public-interest association for Japan's water supply sector (potable water counterpart to JSWA's sewerage focus). Mirrors JSWA's structure: municipal membership, standards-setting, training, publications, and conferences — making it the most directly comparable peer in Japan.
• Water Environment Federation (WEF): US-based nonprofit wastewater industry association offering technical education, certification (e.g., wastewater operator certification), WEFTEC conference, and publications. JSWA's existing trilateral partner, making it a directly comparable mission-aligned peer.
• American Water Works Association (AWWA): US-based nonprofit association for water supply and wastewater professionals, providing standards (ANSI/AWWA), training, publications, and the ACE conference. Comparable to JSWA in serving municipal utilities through standards, certification, and knowledge dissemination.
• European Water Association (EWA): European nonprofit water sector association holding conferences and working groups on water and wastewater management. JSWA's trilateral partner since 1999, with directly comparable industry-association mission and structure.

Broad incumbents

• International Water Association (IWA): Global nonprofit network covering the full water cycle, with broader remit than JSWA's national sewerage focus. Comparable as a thought-leadership and standards body, but operates internationally rather than within a single national market.

Regional players

• DWA (Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall): German water, wastewater, and waste association serving municipal utilities with technical standards, training, and certification. Highly comparable mission and structure to JSWA but operating in a different geography.
• Water UK: UK trade association representing water companies. Comparable industry-association model but serving a regulated privatized water sector rather than municipal public operators.
• Water Services Association of Australia (WSAA): Australian national water utility industry association representing urban water providers. Comparable as a national industry body for water/wastewater utilities, but operating in a different geography.

Others

• WaterAid: International NGO focused on water, sanitation, and hygiene (WASH) in developing countries. Adjacent rather than directly comparable — JSWA serves a developed-country municipal infrastructure base, while WaterAid operates in international development.
• NJS Co., Ltd. Japanese engineering consultancy specializing in water and wastewater infrastructure, serving municipalities and utilities with planning, design, and operations support. Operates in JSWA's addressable market as a private-sector services provider rather than an association.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Japan Sewage Works Association