Practical engineering for water, wastewater, site development, drainage, infrastructure, and permitting.

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Licensed Professional

Civil Engineers on Kaua‘i

Practical Civil Engineering Solutions for Kauaʻi's Most Challenging Projects

Papaʻiki Engineering Inc. provides civil engineering services on Kaua`i, helping property owners, developers, architects, and contractors solve complex engineering challenges. Our expertise includes water and wastewater systems, site development, grading, drainage, infrastructure planning, and permitting support. 


Every project begins with understanding the site. Existing terrain, infrastructure, regulatory requirements, environmental constraints, and project goals all influence the final design. We develop practical, site-specific solutions that balance engineering requirements, constructability, permitting, long-term performance, and project costs.

 

Led by Heath Prow, PE, LEED AP, Papaʻiki Engineering draws on more than 20 years of civil engineering experience across Hawaiʻi, the Pacific, and Asia. That experience includes private, county, state, federal, and U.S. Department of Defense projects involving residential, commercial, industrial, transportation, aviation, utility, water, and wastewater infrastructure. This diverse background enables us to develop practical engineering solutions for projects ranging from straightforward site improvements to complex 

developments requiring multidisciplinary coordination 

and regulatory approvals.

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Engineering That Works Beyond the Design Phase

Engineering decisions made today determine how a project performs for decades. Successful civil engineering considers more than meeting today's requirements - it also accounts for constructability, long-term maintenance, permitting, durability, and how infrastructure will function under real-world conditions.


Papaʻiki Engineering approaches every project with both an engineering and construction perspective. We develop practical, site-specific solutions that are efficient to permit, build, operate, and maintain throughout their service life.

Whether the challenge is limited space, difficult terrain, aging infrastructure, wastewater constraints, or complex permitting requirements, we develop practical engineering solutions that support successful projects from planning through construction and beyond.

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Site-Specific Solutions

Designs tailored to each property's terrain, drainage, and infrastructure constraints. 

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Regulatory Coordination

Helping clients navigate local, state, and federal permitting requirements.

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Constructability

Practical solutions designed to be efficient to build, operate, and maintain.

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Lifecycle Performance

Infrastructure designed for durability, reliability, and 

long-term service.

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Civil engineering is more than preparing drawings or obtaining permits. Engineering decisions affect public health, safety, environmental protection, construction costs, regulatory compliance, and the long-term performance of infrastructure. 


In Hawaiʻi, engineering services must be performed under the direction of a licensed Professional Engineer (PE), who is legally responsible for the engineering design and the decisions that shape each project. 


Whether your project involves wastewater systems, grading, drainage, 

utilities, water infrastructure, or site development, working with a licensed 

Professional Engineer helps ensure your project is designed for long-term 

performance, regulatory compliance, and successful construction. 

Verify a Professional Engineer's License

Professional Engineer licenses in Hawaiʻi can be verified through the Hawaiʻi Department of Commerce and Consumer Affairs (DCCA), Professional & Vocational Licensing Division.

An informed client is better equipped to make confident decisions. We encourage clients to verify professional licenses and understand who is responsible for the engineering work on their project.

Improper design can create:

Drainage failures
Wastewater system issues
Permitting complications
Construction conflicts
Increased long-term maintenance costs

Why Working with a Licensed Professional Engineer Matters

Licenses may be verified through the Hawai‘i DCCA Professional & Vocational Licensing Division.

Many properties on Kauaʻi rely on onsite wastewater systems rather than public sewer infrastructure. Hawaiʻi's cesspool conversion program is requiring thousands of property owners to evaluate and upgrade their existing wastewater systems to meet current Hawaiʻi Department of Health (DOH) requirements. 



Every property is different. Site conditions, soils, groundwater, topography, available space, and wastewater flows all influence the most appropriate wastewater solution. Successful projects begin with understanding those constraints so the most appropriate wastewater solution can be identified.

Our Wastewater Engineering Services Include:

Septic system design
Wastewater system evaluations
Cesspool conversion support
Site feasibility and drainage coordination
Hawaiʻi Department of Health (DOH) permitting assistance

Septic & Wastewater System Design and Cesspool Conversions

Early engineering evaluation helps identify potential constraints, reduce permitting delays, and develop practical wastewater solutions designed for long-term performance.

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Local Experience Matters

Successful projects require more than sound engineering. They benefit from local  experience, an understanding of Kauaʻi's unique conditions, and familiarity with the agencies involved throughout the approval process.

With more than 20 years of engineering experience in Hawaiʻi, Papaʻiki Engineering  brings practical insight that helps clients navigate projects from initial planning through construction.

Our local experience helps clients with:

Agency Coordination

Working effectively with county, state, utility, and regulatory agencies throughout the project.

Site-Specific Design

Designs that reflect Kauaʻi's terrain, rainfall, infrastructure, and development constraints.

Permitting Strategy

Identifying potential issues early to support a smoother permitting process.

Local Engineering Insight

Applying decades of local engineering experience to identify challenges early and support informed project decisions.

Local engineering experience isn't just about understanding the regulations—it's about understanding how projects move from planning to approval to construction.

Civil Engineering Services on Kaua‘i

Comprehensive civil engineering services supporting residential, commercial, industrial, and public infrastructure projects throughout Kaua'i

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Feasibility Studies

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Infrastructure Planning and Design

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Grading & Site Development

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Roadway Design

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Water System Design

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Wastewater System Design

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Storm Drainage Design

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Drainage Studies and Reports

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Septic & Onsite Wastewater Design

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Permitting & Agency Coordination

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Fire Hydrant Flow Tests and Calculations

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Backflow Prevention Plans

From residential developments to public infrastructure improvements, Papaʻiki Engineering provides practical civil engineering solutions tailored to each project's unique requirements.

Get in Touch

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Location

Lihu'e, HI

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Hours

24/7 Availability

Contact Us

Contact Us