Larry Walker Associates

Name

Larry Walker Associates

Legal name

Larry Walker Associates

Website

https://lwa.com

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Environmental Engineering Consulting

NAICS

Environmental Consulting Services (54162), Other Scientific and Technical Consulting Services (54169), Architectural, Engineering, and Related Services (5413)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

akta.pro secondary industry

Water, Wastewater & Stormwater Compliance (BPAHAJAJ)

Keywords

• Environmental consulting services
• Water quality management
• Groundwater sustainability planning
• Watershed management services
• Wastewater regulatory compliance

Headquarters

HQ city

Davis

HQ country

United States

HQ region

North America

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Environmental Consulting Services: Professional consulting services for water quality management, including TMDL development, groundwater sustainability planning, stormwater management, wastewater regulatory support, and watershed management. Revenue is generated through project-based consulting engagements with government agencies and private landowners.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Larry Walker Associates is an environmental engineering consulting firm that delivers water quality management services to municipalities, public agencies, and agricultural groups, primarily in California. The firm provides project-based consulting across six service areas—Agriculture, Groundwater, Stormwater, Wastewater, Water Resources, and Watershed management—covering TMDL development, NPDES permitting, Groundwater Sustainability Plans, water quality monitoring, and regulatory negotiation.

Product overview

Larry Walker Associates (LWA) is an environmental consulting firm offering six interconnected core service areas: Agriculture, Groundwater, Stormwater, Wastewater, Water Resources, and Watershed management services. The company provides end-to-end water quality management solutions, combining scientific expertise with regulatory compliance support. Their services range from monitoring and technical studies to policy development and stakeholder engagement, all designed to help California communities manage water resources sustainably while meeting state and federal environmental regulations.

Differentiator

Problem solved

Functional benefit

Products and services

• Agriculture Services
• Groundwater Services Groundwater sustainability planning and management services including Groundwater Sustainability Plan development, California groundwater law compliance, salt and nutrient management, monitoring systems, hydrological modeling, and groundwater recharge project design and implementation. Targeted at groundwater sustainability agencies and water districts.
• Stormwater Services Stormwater management solutions for communities including watershed planning, permit negotiations, best practices guidance, staff training programs, trash reduction strategies, water quality monitoring, and regulatory compliance reporting. Targeted at municipal stormwater programs and MS4 permittees.
• Wastewater Services Wastewater treatment management services including quality monitoring, mixing zone studies, pollution source identification, local limits development, pollution prevention strategies, facility planning, and water recycling program development. Targeted at public wastewater treatment agencies.
• Water Resources Services Water resource management support for cities, towns, and water agencies including treated wastewater reuse strategies, permit assistance, water conservation improvement, and regulatory navigation. Targeted at municipalities, towns, and water agencies.
• Watershed Services Watershed management and Total Maximum Daily Load (TMDL) regulation services including TMDL development, water quality standards review, policy guidance, stakeholder communication, permit compliance, and Salt and Nutrient Management Plans. Targeted at watershed management organizations and stakeholder groups.

Quantifiable outcome

• Over 1,200 landowners helped with compliance across 80,000 acres
• +3 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• Environmental Science AssociatescoreStrategic or Co-development PartnerLWA works in association with Environmental Science Associates on the Mugu Lagoon Coastal Brackish Groundwater Extraction Project, assisting United Water Conservation District with technical expertise in discharge management, water quality monitoring, marine environmental protection, and TMDL compliance.
• United Water Conservation DistrictcoreOthersLWA assists UWCD in the Extraction Barrier and Brackish Water Treatment Project at Naval Base Ventura County Point Mugu, providing technical expertise for seawater intrusion reduction and beneficial water reuse evaluation.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Environmental Science Associates (ESA): California-headquartered environmental consulting firm with overlapping water quality, CEQA/NEPA, and watershed management practices. ESA is a documented strategic partner of LWA on the Mugu Lagoon project and competes for the same municipal water agency RFPs.
• Brown and Caldwell: Specialized environmental engineering and consulting firm focused on water and wastewater utilities, with strong municipal and NPDES compliance practices. Direct competitor to LWA in California wastewater and stormwater permit work.
• Carollo Engineers: Employee-owned water-focused engineering firm serving municipal wastewater, water reuse, and groundwater clients across the Western U.S. Highly comparable to LWA's service mix and client base, particularly in California.
• Woodard & Curran: Environmental engineering and operations firm with significant water resources, wastewater, and stormwater practices serving municipal clients. Comparable in service scope and target customer segment to LWA.

Broad incumbents

• Tetra Tech: Global consulting and engineering firm with a large water and environment practice. Competes with LWA on larger municipal water quality, TMDL, and groundwater engagements, with broader geographic and multi-disciplinary reach.
• HDR Inc. Large engineering and consulting firm with established water resources, wastewater, and stormwater practices. Overlaps with LWA's municipal water client base, particularly on West Coast engagements.
• AECOM: Global infrastructure consulting firm with a major water practice covering wastewater, stormwater, and environmental compliance. Competes with LWA on larger California municipal programs while offering broader services.
• ICF International: Professional services firm with strong environmental regulatory, water resources, and climate adaptation practices. Competes with LWA on California water policy, TMDL, and grant-funded engagements.

Emerging players

• GHD: Global engineering and environmental consulting firm that has been expanding its U.S. water and environmental presence. Increasingly overlaps with LWA in California and Pacific Northwest municipal water work.

Others

• RICK Engineering: Western U.S. engineering and environmental services firm with stormwater and watershed practices. Less specialized in water quality than LWA but competes for some municipal watershed and compliance work; also a previous employer of an LWA associate.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 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 Larry Walker Associates