What Kankyo does

Kankyo is a 42-year-old, privately held Japanese infrastructure maintenance firm headquartered in Osaka. Founded in 1983 as Kankyo Kaihatsu Center and renamed in 1984, the company operates across five service lines: water and sewer facility maintenance management, plant engineering and construction, building maintenance, specialty flooring product sales, and a new SaaS initiative. Its core service offerings — long-term public-sector maintenance of water treatment plants, pump stations, and sewer infrastructure, plus plant mechanical/piping/electrical construction — are anchored by multiple government-registered qualifications including sewage treatment facility operator, drinking water tank cleaning, septic tank maintenance, fire equipment inspection, toxic substances sales, and construction permits. The company is ISO 9001 (since 2003) and ISO 14001 (since 2008) certified and holds approximately 100 employees.

In May 2023, Kankyo launched SumaLive (スマリブ), a proprietary SaaS web application that automates scheduling coordination between property management companies, inspection companies, and residents for maintenance and renovation work in condominiums and apartment buildings, replacing manual phone-based coordination. SumaLive is distributed via a self-serve product-led model with a free trial, supported by participation in major industry exhibitions including the Mansion Sogo EXPO, Buildmen Human Fair, and Rental Housing Fair. The company generates revenue through subscription-recurring public-sector maintenance contracts, project-based plant construction services, monthly SumaLive SaaS subscriptions, and one-time e-commerce sales of free-access double-floor panels through Rakuten and Yahoo! Shopping.

Kankyo serves three primary customer segments: municipal governments (primary, for water/sewer PPP contracts), building maintenance and property management companies (primary, for SumaLive), and private industrial clients (secondary, for plant construction). Its operating geography is concentrated in the Kansai region — Osaka, Sakai, Higashi Osaka, Matsubara, and Yamatokoriyama — with a major 10-year wide-area Water PPP contract covering Osaka Sayama and Kawachinagano cities taking effect from April 2026. The company is led by Representative Director Yasuhiro Takiguchi following a June 2022 leadership succession; Akihiko Takiguchi serves as Chairman. No external institutional investment, PE, or VC ownership has been identified.

Name

Kankyo

Legal name

株式会社カンキョウ

Website

https://kabu-kankyo.co.jp

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

51–100 employees

Short description

Kankyo is a 42-year-old Osaka-based infrastructure maintenance company providing water/sewer facility management, plant engineering, and building maintenance services to Japanese municipalities and property managers, now extending into SaaS via its SumaLive scheduling platform.

Ownership category

akta.pro rank

Product category

Facility Maintenance Services

NAICS

Sewage Treatment Facilities (22132), Water, Sewage and Other Systems (2213), Administrative and Support Services (561)

SIC

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

akta.pro primary industry

Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ)

akta.pro secondary industries

Commercial/Residential Building Water Management & Leak Analytics Services (HSAHAGAK), Decentralized/Package Wastewater Systems (Small/Remote) (EUANADAE)

Keywords

• Water sewage maintenance
• Building maintenance services
• Plant construction engineering
• Maintenance scheduling SaaS
• Facility management services

Headquarters

HQ city

Osaka

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. 上下水道施設維持管理業務 (Water and Sewer Facility Maintenance Management): Long-term facility management contracts with public sector clients (municipalities) for maintaining water treatment plants, pump stations, and sewer infrastructure. Revenue is generated through service contracts, likely recurring in nature given the 10-year contract example cited.
2. ビルメンテナンス (Building Maintenance): Building maintenance services including fire equipment inspection, water tank cleaning, drainage pipe cleaning, and general building management for condominiums and apartment complexes.
3. スマリブ (SumaLive) SaaS Sales: SaaS subscription product for building maintenance management. Kankyo sells the SumaLive web app to property management companies and maintenance firms, offering a free trial period.
4. フリーアクセス特殊二重床販売 (Free Access Special Double-Floor Sales): Sale of removable double-floor panels through e-commerce channels (Rakuten, Yahoo! Shopping), allowing building owners to easily access under-floor wiring and maintenance.
5. プラン卜工事 (Plant Construction and Engineering): Mechanical, piping, and electrical construction work including installation of pumps, blowers, and other plant equipment, along with commissioning and maintenance services for water treatment facilities.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

Kankyo provides water and sewage facility maintenance management services for municipal government infrastructure (sewage treatment plants, pump stations, industrial wastewater facilities), plant construction services (mechanical, piping, electrical) for water and sewer facilities, and building maintenance services (fire equipment inspection, water tank cleaning, drainage cleaning) for condominiums and apartment complexes. In May 2023, the company launched SumaLive (スマリブ), a proprietary SaaS web application for smart scheduling of maintenance and renovation work between property management companies, inspection companies, and residents. The company also sells removable free-access double-floor panels through e-commerce.

Product overview

Kankyo offers a portfolio of infrastructure maintenance and building management services alongside its SaaS product スマリブ (SumaLive). The core business encompasses water and sewage facility maintenance management, plant engineering, and building maintenance services. スマリブ is the company's SaaS product launched in 2023 — a web application for building maintenance scheduling that connects property managers, inspection companies, and residents. This product represents the company's entry into new business development beyond its traditional service offerings. Additional offerings include free access flooring product sales. The company serves primarily public sector and real estate/building management clients in the Osaka, Japan region.

Differentiator

Problem solved

Functional benefit

Brands

• スマリブ (SumaLive): A web-based SaaS application for building maintenance management that enables smart scheduling of maintenance and renovation work with residents in collective housing (condominiums and apartments). It connects property management companies, inspection companies, and residents for efficient scheduling coordination.

Products and services

• Water and Sewer Facility Maintenance Management (上下水道施設維持管理業務) Comprehensive maintenance management services for public water and sewer infrastructure including sewage treatment plants, pump stations, industrial wastewater treatment facilities, and water supply facilities. Targeted at municipal governments and public sector clients requiring long-term, technically qualified facility operators. Includes earthquake countermeasures and renovation capabilities for aging infrastructure.
• Plant Construction (プラント工事) Plant engineering and construction services including mechanical equipment installation, piping, electrical work, equipment installation, and commissioning for water and sewage facilities. Served private industrial companies requiring turnkey construction solutions for water treatment and industrial facilities.
• Building Maintenance (ビルメンテナンス) Building maintenance services specializing in apartment complexes and residential buildings, including fire equipment inspection, water tank cleaning, drainage pipe cleaning, and general building management for condominiums and apartment complexes. Targeted at building maintenance companies and property management firms.
• SumaLive (スマリブ) — Building Maintenance Scheduling SaaS A SaaS web application that enables smart scheduling of maintenance and renovation work for residents in condominiums and multi-unit residential buildings. It automates date coordination between management companies, inspection companies, and residents, replacing manual phone calls. Targeted at property management companies and building maintenance firms. Available with a free trial.
• Free Access Special Double-Floor Panels (フリーアクセス特殊二重床販売) Sale of high-strength removable double-floor panels through dedicated e-commerce stores on Rakuten and Yahoo! Shopping. Allows building owners to easily access under-floor wiring and maintenance areas. Targeted at building owners and contractors needing flexible floor access solutions.

Quantifiable outcome

• SumaLive free trial available
• +1 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• Nissui Corporation (日水業株式会社) — Member of South Osaka Wide Area Sewerage Service Joint EnterprisecoreStrategic or Co-development Partner · 19 February 2026Nissui Corporation, as a member of the South Osaka Wide Area Sewerage Service Joint Enterprise (南大阪広域下水道サービス共同企業体), partnered with Kankyo to sign a 10-year comprehensive maintenance management contract for public sewer facilities in Osaka Sayama City and Kawachinagano City. The project is the first wide-area Water PPP promoted by the national government.

Scale indicators4 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• Critus Corporation (クリタス株式会社): Specialized Japanese water and sewage infrastructure maintenance contractor providing facility management, inspection, and rehabilitation services. Highly comparable to Kankyo's sewer maintenance operator registrations and municipal contract base.
• Nissui Corporation (日水産業株式会社): Japanese water/sewer infrastructure services company and Kankyo's explicit co-partner in the South Osaka Wide Area Sewerage Service Joint Enterprise for the 10-year Water PPP with Osaka Sayama City and Kawachinagano City. Directly comparable in municipal water/sewer O&M operations and contract structure.
• Metawater (メタウォーター株式会社): Japan-listed provider of water and wastewater treatment plant equipment and long-term O&M services. Comparable to Kankyo across both the plant construction/equipment side and the long-duration municipal O&M side.
• Nishihara Environment (西原環境ホールディングス): Tokyo Stock Exchange-listed water and sewage treatment plant operator providing O&M, construction, and consulting services to municipalities and industrial clients across Japan. Comparable to Kankyo in long-term municipal water/sewer plant maintenance and EPC.
• Mizuing (水ing株式会社): One of Japan's largest dedicated water and sewage treatment plant O&M contractors, operating municipal and industrial wastewater facilities under long-term contracts. Closely comparable to Kankyo's core water/sewer facility maintenance management business.
• Rays Next (レイズネクスト株式会社): Japanese plant engineering and maintenance services company covering mechanical, piping, and electrical work for energy and environmental facilities. Comparable to Kankyo's plant construction (mechanical/piping/electrical) and facility maintenance operations.

Emerging players

• Ielove (いえらぶ): Japan-focused proptech/SaaS provider serving real estate agencies, property managers, and landlords with cloud-based workflow and management tools. Comparable to Kankyo's SumaLive SaaS in targeting the Japanese property and building management ecosystem, but with a broader feature set and national footprint.

Broad incumbents

• Veolia Japan (ヴェオリア・ジャパン): Japanese subsidiary of global water services giant Veolia, operating municipal and industrial water/wastewater services across Japan. Comparable to Kankyo's municipal water/sewer O&M business but operates at much larger scale with broader geographic reach.
• Kurita Water Industries (栗田工業株式会社): Major Japanese water treatment solutions provider offering chemicals, equipment, and ultrapure water services to industrial and municipal customers. Comparable in the water/wastewater domain but at much larger scale and with a broader industrial portfolio.
• Kubota Corporation (株式会社クボタ): Global Japanese manufacturer of water infrastructure products including ductile iron pipe, pumps, and treatment equipment sold to municipal water utilities. Adjacent to Kankyo's water/sewer equipment installation work but operating at vastly larger scale as a global incumbent.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights5 records

Customer concentration

Compliance2 records

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 Kankyo