Our Work in Hawai’i
For more than 25 years, WaterTectonics has helped communities solve complex water and wastewater challenges through a combination of engineering expertise, field execution, and long-term operational support.
In Hawai’i, our team works alongside municipalities and utility operators to evaluate lagoon health, restore treatment capacity, improve water quality, and extend the useful life of existing infrastructure.
From lagoon assessments and sonar bathymetric surveys to dredging, aeration, circulation improvements, and treatment optimization, we provide practical solutions tailored to island communities.
Why Lagoon Restoration?
Loss of Treatment Capacity
Decades of phosphorus accumulation can contribute to algae growth and elevated suspended solids.
Increased Nutrient Loading
Decades of phosphorus accumulation can contribute to algae growth and elevated suspended solids.
Algae & Water Quality Challenges
Nutrient-rich sediments can fuel recurring algae blooms that impact effluent quality.
Permit Compliance Concerns
Operational issues may contribute to challenges meeting regulatory requirements.
Rising Capital Costs
Restoration can often provide a cost-effective alternative to major facility upgrades.
Aging Infrastructure
Many facultative lagoons operate for decades without sludge removal or major rehabilitation.
A Data-Driven Approach to Lagoon Restoration
Step 1 – Assess
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Sonar Bathymetric Mapping
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Sludge Depth Analysis
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Hydraulic Retention Time Evaluation
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Nutrient Characterization
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Facility Condition Assessment
Step 2 – Plan
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Restoration Strategy Development
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Cost & ROI Evaluation
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Regulatory Coordination
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Phased Implementation Planning
Step 3 – Restore
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Lagoon Dredging
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Sludge Removal & Dewatering
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Material Handling
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Aeration Installation
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Circulation Improvements
Step 4 – Optimize
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Performance Monitoring
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Water Quality Improvements
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Nutrient Reduction Strategies
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Long-Term Operations Support
Helping Hawai’i Communities Restore Critical Wastewater Infrastructure
We help utilities and facility operators solve difficult water quality & infrastructure challenges across the Hawai’ian islands.
Juanita Reyher-Colon
Executive Director, Hawaiʻi Rural Water Association
Address the Root Cause
Accumulated sludge stores nutrients that can continue fueling algae growth and water quality challenges. Removing nutrient-rich sediments helps restore lagoon performance while reducing the conditions that contribute to recurring problems.
Know What’s Below the Surface
Accumulated sludge stores nutrients that can continue fueling algae growth and water quality challenges. Removing nutrient-rich sediments helps restore lagoon performance while reducing the conditions that contribute to recurring problems.
Additional Resources
Hawai’i Lagoon Self-Assessment
