Hiyoshi
Hiyoshi is a Japanese environmental services company providing analytical testing, industrial chemicals, water/sewage facility management, and environmental conservation services to municipalities, industrial clients, and households across the Kansai region.
- Company typePrivate
- Founded1955
- HeadquartersOmihachiman, Japan
- Headcount251–500
- GTM typeB2B and B2C
- OfferingServices
What Hiyoshi does
Hiyoshi is a privately held Japanese environmental services corporation founded in 1955 and headquartered in Omi-Hachiman City, Shiga Prefecture. The company operates four integrated service divisions: (1) analysis and testing (water quality, soil, air, dioxins, PFAS, food safety, eDNA/genetic analysis, and noise/vibration); (2) industrial chemicals (sodium hydroxide, flocculants, activated carbon, sulfuric acid, disinfectants, and boiler/cooling tower chemicals); (3) facility management (water/sewage plant operations, drainage facilities, environmental measurement equipment maintenance, and building management on a 24/7/365 basis); and (4) environmental conservation (sewer pipeline maintenance, dredging, civil engineering, and waste collection using a specialized fleet). The company holds 93 types of business licenses and approvals and deploys 260+ analytical instruments alongside 240+ specialized vehicles to deliver these services.
Hiyoshi's underlying technology stack combines laboratory instrumentation with proprietary biological and remote-sensing capabilities. Its core scientific differentiators include environmental DNA (eDNA) metabarcoding analysis — developed in collaboration with Ryukoku University and applied to fish community studies in Lake Biwa — and a jointly developed algae (cyanobacteria) bloom monitoring system using high-resolution satellite imagery and multivariate analysis, for which a patent application has been filed alongside blue and tech Co., Ltd. The company also operates a CALUX®-based dioxin assay for chemical substance evaluation. These capabilities support both compliance-grade testing services and forward-looking ecological monitoring.
The business model is primarily enterprise sales-led, with direct field service delivery to municipal water/sewage operators, industrial manufacturers, and government institutions across the Kansai region. A secondary direct-to-consumer channel — the Hiyoshi Online Inspection Web portal — sells standardized water-quality and food-safety test kits (e.g., ¥123,750 for a 52-item water panel, ¥27,500 for DON mycotoxin testing) with promotional coupon campaigns to households and small businesses. Revenue is generated through a mix of usage-based testing fees, managed-services contracts for critical infrastructure, industrial chemical supply (delivered via proprietary tanker trucks from 15+ storage tanks), and professional-services environmental conservation work. The company has trained personnel from 53 countries and manages annual tap water supply capacity of 11,800万㎥ (118 million cubic meters).
Hiyoshi firmographics
Firmographics- Name
- Hiyoshi
- Legal name
- 株式会社日吉
- Website
- https://hiyoshi-es.co.jp
- Company type
- Private
- Founded year
- 1955
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Hiyoshi is a Japanese environmental services company providing analytical testing, industrial chemicals, water/sewage facility management, and environmental conservation services to municipalities, industrial clients, and households across the Kansai region.
- Ownership category
- akta.pro rank
Hiyoshi industry classification
Industry- Product category
- Environmental Testing & Facility Management Services
- NAICS
- Waste Treatment and Disposal (5622), Remediation Services (562910), Waste Management and Remediation Services (562), Remediation and Other Waste Management Services (5629)
- SIC
- Water Supply (4941), Refuse Systems (4953), Hazardous Waste Management (4955)
- akta.pro primary industry
- Water Resources, WASH & Integrated Water Management (BPADALAH)
- akta.pro secondary industries
- Groundwater Extraction, Treatment & Discharge (Pump-and-Treat, reinjection) (BPALAKAF), Industrial Sludge & Byproduct Management (BPALAHAG)
Keywords
Where Hiyoshi is headquartered
LocationHeadquarters
- HQ city
- Omihachiman
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
Hiyoshi business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Analysis/Testing Services: Comprehensive environmental testing and analysis services including water quality, soil, air, dioxins, PFAS, food safety, and genetic analysis (eDNA). Provided to municipalities, industries, and general households through online portal and direct service.
- Industrial Chemicals Supply: Supply of industrial chemicals including sodium hydroxide, flocculants, activated carbon, sulfuric acid, disinfectants, and boiler/cooling tower chemicals. Company maintains 9+ chemical types with 15+ storage tanks and operates proprietary tanker trucks for delivery.
- Facility Management: Water treatment facility management, sewerage management, drainage facility management, environmental measurement equipment maintenance, and building management services. 24-hour, 365-day operations for municipal and industrial infrastructure.
- Environmental Conservation: Sewer pipe maintenance, cleaning/dredging, civil engineering works, and waste collection/transport services using 120+ specialized vehicles.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Water Quality Testing - Standard (52 items) |
| Unit Pricing | Pay-as-you-go | Water Quality Testing - Raw Water (40 items) |
| Unit Pricing | Pay-as-you-go | DON (Deoxynivalenol) Testing |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels5 records
Hiyoshi product offering
Product offeringCore offering
Hiyoshi is a Japanese environmental services company that delivers integrated solutions across four main divisions: (1) analysis and testing (water, soil, air, dioxins, PFAS, food safety, and environmental DNA), (2) industrial chemical supply (sodium hydroxide, flocculants, activated carbon, etc.) with proprietary delivery fleet, (3) facility management (water/sewage treatment, environmental measurement equipment, building management) operated 24/7/365, and (4) environmental conservation (sewer maintenance, dredging, civil engineering, waste collection).
Differentiator
Problem solved
Functional benefit
Products and services
- Environmental Analysis & Testing Services Comprehensive environmental testing and analysis services covering water quality, soil, air, dioxins, PFAS, food safety, and genetic (eDNA) analysis. Provided to municipalities, industrial plants, and general households through the online inspection portal and direct service channels.
- Industrial Chemicals Supply Supply of industrial chemicals including sodium hydroxide (caustic soda), polymer and aluminum-based flocculants, activated carbon, sulfuric acid, slaked lime, sodium hypochlorite disinfectant, urea solution, hydrochloric acid, freezing prevention agents (sodium chloride, calcium chloride), boiler/cooling tower chemicals, and chelating agents. Includes chemicals contracting (薬品請負) service for full management of customer chemical operations.
- Water & Wastewater Facility Management Operating management of water treatment and sewage treatment facilities, septic tank and agricultural community drainage facility management, factory wastewater treatment facility management, water storage tank management, and waste treatment facility management. Environmental measurement equipment maintenance management and building comprehensive management (building maintenance) services.
- Environmental Conservation Services
Quantifiable outcome
- 71 years of continuous operation serving environmental infrastructure needs
- +1 more outcomes
Companies that use Hiyoshi
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
Hiyoshi technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability2 records
Feature3 records
Hiyoshi partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and minor.
- blue and tech Co., Ltd. (ブルー アンド テック株式会社)coreJoint development of proprietary algae bloom monitoring system using satellite imagery and multivariate analysis. The system observes lake surfaces every 5 days to create algae maps and predict bloom conditions. Patent application filed jointly.
- Ryukoku University (龍谷大学)coreJoint research on environmental DNA analysis for fish community assessment in Lake Biwa's southern lake area. Collaborative findings published in the peer-reviewed journal 'Ichthyological Research' showing recovery of native fish species.
- Indian Institute of Technology Hyderabad (インド工科大学ハイデラバード校)minorUniversity visit for environmental urban infrastructure learning, part of international academic exchange program.
- Ritsumeikan University (立命館大学)minorJoint university visit with IIT Hyderabad for environmental infrastructure study tour.
- Ritsumeikan University (立命館大学)coreCo-research on water quality analysis and algae bloom prediction in Lake Biwa's Nishi-no-ko (西の湖). Joint presentation at the 60th Japan Society on Water Environment Annual Conference.
- Shiga Prefectural Fisheries Experiment Station (滋賀県水産試験場)coreMember of joint research group on Lake Biwa fish communities using environmental DNA analysis, along with Ryukoku University and Lake Biwa Museum.
- Lake Biwa Museum (滋賀県立琵琶湖博物館)coreCollaborative partner in Lake Biwa environmental research including fish community studies using environmental DNA analysis.
- Ministry of Education, Culture, Sports, Science and Technology (文部科学省)minorSponsor support for Tobitate! Study Abroad JAPAN Alliance project 'Future Planning! Shiga Overseas Study Support Program' as part of global talent development initiatives.
Scale indicators7 records
Recent moves6 records
Expansion highlights5 records
Hiyoshi competitors and assessment
Company assessmentOthers
- Shimadzu Corporation: Japanese analytical instrument manufacturer whose equipment (mass spectrometers, chromatographs) is used in Hiyoshi's 260-instrument analytical base. Adjacent rather than directly competing — Shimadzu supplies the tools Hiyoshi uses for testing services, making it a key enabler/supplier in the value chain.
Broad incumbents
- ALS Limited (ALS Japan): Global testing services group with Japanese operations covering environmental, food, and water quality testing. Comparable to Hiyoshi's analysis/inspection business but operates at international scale with broader geographic reach and standardized lab networks.
- Organo Corporation: Established Japanese water and wastewater treatment plant engineering and services provider. Overlaps with Hiyoshi's facility management and environmental conservation business lines, but Organo focuses on large-scale plant construction and ultrapure water for semiconductors rather than regional municipal services.
- SGS Japan: Global inspection, verification, testing and certification company with significant Japanese environmental testing operations. Comparable in water quality, soil, and food safety testing capabilities, but operates as part of a multinational TIC conglomerate rather than a regional Japanese specialist.
- Bureau Veritas Japan: International testing, inspection and certification (TIC) provider with environmental and laboratory testing services in Japan. Comparable in water quality, soil, and environmental analysis offerings but as part of a global TIC portfolio rather than a regional specialist focus.
- Kurita Water Industries: Major Japanese water treatment chemicals and facility management company. Directly comparable in industrial chemicals supply (flocculants, caustic soda, boiler chemicals) and water/sewage facility operations, but operates at much larger national and global scale with broader industrial focus beyond Hiyoshi's regional niche.
- Eurofins Japan: Subsidiary of global Eurofins Scientific, providing environmental testing services including water quality, soil, and dioxin analysis. Directly competes with Hiyoshi's analysis/inspection division but operates at much greater scale across Japan and globally with broader testing portfolio.
Emerging players
- IDEXX Laboratories (Japan operations): Global water microbiology testing company with Japanese distribution. Overlaps with Hiyoshi's Legionella and water quality testing services, but IDEXX focuses specifically on microbiological testing products rather than comprehensive environmental analysis.
Direct peers
- Nippon Suido Consultants Co., Ltd. Japanese water and wastewater engineering consultancy offering facility management, environmental analysis, and water treatment services. Closest direct peer to Hiyoshi in combining facility management with environmental testing, though with greater focus on consulting and design-build services.
Regional players
- Shiga Prefecture Water Supply Authority equivalents (e.g., local water utility contractors): Regional water and sewage contractors serving Japanese prefectures similar to Hiyoshi's Shiga-based operations. Direct competitors for municipal facility management contracts but typically confined to single-prefecture service areas with comparable scale and capability profiles.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks5 records
Key highlights7 records
Customer concentration
Hiyoshi social profiles
Digital presenceHiyoshi financial estimates
Financial estimateRevenue estimate
Valuation estimate
Hiyoshi leadership team
Management profileNumber of profiles
Profiles1 record
Hiyoshi funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Hiyoshi M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Hiyoshi
What does Hiyoshi do?
Hiyoshi is a Japanese environmental services company that delivers integrated solutions across four main divisions: (1) analysis and testing (water, soil, air, dioxins, PFAS, food safety, and environmental DNA), (2) industrial chemical supply (sodium hydroxide, flocculants, activated carbon, etc.) with proprietary delivery fleet, (3) facility management (water/sewage treatment, environmental measurement equipment, building management) operated 24/7/365, and (4) environmental conservation (sewer maintenance, dredging, civil engineering, waste collection).
Is Hiyoshi a public or private company?
Hiyoshi is a private company. It is classified as family owned and is currently operating.
When was Hiyoshi founded?
Hiyoshi was founded in 1955. It employs 251 to 500 people.
Where is Hiyoshi based?
Hiyoshi is headquartered in Omihachiman, Japan, in the Asia region.
How does Hiyoshi make money?
Four revenue lines are on record. Analysis/Testing Services are the primary driver. The others are industrial Chemicals Supply, facility Management and environmental Conservation.
Who are Hiyoshi's main competitors?
Shimadzu Corporation is listed as an others. Broad incumbents are ALS Limited (ALS Japan), Organo Corporation, SGS Japan, Bureau Veritas Japan, Kurita Water Industries and Eurofins Japan. IDEXX Laboratories (Japan operations) is listed as an emerging player. Nippon Suido Consultants Co., Ltd. is listed as a direct peer. Shiga Prefecture Water Supply Authority equivalents (e.g., local water utility contractors) is listed as a regional player.
Does Hiyoshi have an API?
No public API is recorded for Hiyoshi.
What industry is Hiyoshi in?
Hiyoshi's product category is Environmental Testing & Facility Management Services. Its primary akta.pro industry code is BPADALAH, Water Resources, WASH & Integrated Water Management, with a secondary code of BPALAKAF, Groundwater Extraction, Treatment & Discharge (Pump-and-Treat, reinjection). Its NAICS code is 5622 and its SIC code is 4941.