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Hawaii Cesspool Conversion Services

Convert with Confidence.

Hawaii's cesspool conversion requirements are creating an unprecedented need for septic system design, permitting, and project implementation.

QRSE helps homeowners, property managers, commercial property owners, and landowners navigate the conversion process with confidence. Through a combination of engineering expertise, practical project support, and AI-assisted design technology, we deliver permit-ready septic designs faster, more efficiently, and with predictable pricing.

Whether you need a residential septic design, a commercial system evaluation, or support managing multiple properties, QRSE can help you move from requirement to solution.

88,000
Cesspools mandated for conversion statewide
2030
Commercial & Priority 1 residential deadline
$20K
Kauai County grant active (state program closed)
40+
Completed Hawaii septic projects

Commercial cesspool deadline: January 1, 2030. Priority 1 residential cesspools: recommended conversion by 2030. Fixed-fee designs available now.

Hawaii's Cesspool Conversion Challenge

Hawaii law requires the conversion of cesspools to approved wastewater systems, with accelerated deadlines for commercial properties and high-priority locations. Approximately 88,000 cesspools remain in operation statewide, creating significant demand for engineering, permitting, and construction services.

For many property owners, the challenge is not understanding the requirement—it's navigating the process.

Engineering design, percolation testing, permit applications, regulatory requirements, and contractor coordination can be time-consuming and difficult to manage.

QRSE simplifies the process by combining engineering expertise with technology that accelerates design development and permit preparation.

WHY CLIENTS CHOOSE QRSE

Faster Turnaround

Technology-enabled workflows significantly reduce design and documentation time while maintaining engineering quality and regulatory compliance.

Fixed-Fee Pricing

Know your design costs before work begins. Our fixed-fee approach provides transparency and predictability for property owners.

Permit-Ready Deliverables

Every design is reviewed by a licensed Professional Engineer and prepared for Department of Health permitting requirements.

Conversion Deadlines

Commercial / large-capacity cesspoolsJan 1, 2030
Priority 1 residential (near wells, ocean)2030 proposed
Priority 2 residential (significant hazard)2035 proposed
All remaining residential cesspoolsJan 1, 2050

💰 Financing Available

Kauai County offers an active grant of up to $20,000 for qualifying homeowners. SB 1512 — a 0% on-bill loan up to $10,000 — is pending the 2026 Hawaii Legislature. QRSE will help you identify and navigate every available program.

From Parcel Address to Permit Package

Our technology automates every step that can be automated. Licensed PE judgment is applied at every step that requires it.

Step 01

Parcel Intake

Enter your TMK or address. Our tool instantly pulls your GIS parcel data, soil survey, DOH permit history, flood zone, setbacks, and well/stream proximity.

Step 02

Perc Test & Site Data

QRSE schedules a field technician for your percolation test and site measurements — the only step that requires physical presence. We batch-schedule neighborhood visits for efficiency.

Step 03

AI-Assisted Design

Our HAR 11-62 rules engine applies Hawaii's wastewater regulations to your site data and generates a draft septic system design — tank sizing, leach field layout, setbacks, cross-sections.

Step 04

PE Review & Permit Package

Your design is reviewed and PE-stamped by our licensed engineer. We assemble the complete DOH IWS permit package and manage the submittal on your behalf.

Who We Serve

Homeowners
Commercial Property Owners
Property Managers
Homeowner Associations
Agricultural Property Owners
Institutional Property Owners
Multi-Property Landowners

Frequently Asked Questions

Why do I need to convert my cesspool?

Hawaii law requires the conversion of cesspools to approved wastewater systems. Certain commercial properties and high-priority locations face accelerated compliance deadlines.

How long does the process take?

Design and permit preparation timelines vary by property, but QRSE's technology-enabled process helps accelerate project delivery compared to traditional approaches.

Are financing programs available?

Funding opportunities and financing programs change periodically. QRSE can help identify currently available programs and determine eligibility.

Will I still work with a licensed engineer?

Yes. Every design is reviewed by a licensed Professional Engineer prior to submission. Technology supports the process; engineering judgment remains essential.

What "AI-Assisted" Actually Means

Automated GIS & Parcel Data Integration

What used to take a drafter 2–3 hours — pulling GIS layers, soil surveys, permit records, zoning — happens in seconds. The tool queries state and county databases and structures the data automatically.

HAR 11-62 Rules Engine

Hawaii's Department of Health wastewater design standards (Title 11, Chapter 62) are encoded as rules. Every design is checked for sizing, setbacks, soil absorption rates, and variance triggers before it reaches an engineer.

Template-Driven CAD Output

The rules engine populates professional AutoCAD plan sheets: site plan, system layout, cross-sections, specifications, and title block — ready for PE review, not starting from scratch.

PE Stamp on Every Design

Technology accelerates the work. The PE stamp certifies it. Every design is reviewed and stamped by JJ Anderson, PE, before submission. Compliance is not optional.

Ready to Convert with Confidence?

Whether you're planning a single residential conversion or managing a portfolio of properties, QRSE can help you simplify the process, accelerate design, and move toward compliance with confidence.

Request a Consultation

QRSE — Advisory · Construction · Technology

Septic AI Design Tool is a product of QRSE Technology Products · Kathleen McNulty, Director

PE of Record: JJ Anderson, PE · All designs comply with HAR Title 11, Chapter 62

© 2026 QRSE. All rights reserved. · Privacy · Terms