WHY PAY RETAIL PRICES?

Save Money on Pool & Water Treatment Chemicals

At Mermaid Water Co., we combine professional water testing with expert chemical recommendations to help you avoid overbuying and overspending.

✔ Competitive pricing on trusted name-brand products
✔ Accurate water testing eliminates guesswork
✔ Buy only what your water actually needs
✔ Expert advice backed by 28 years of water chemistry experience

Better water starts with better pricing.

Stop Guessing. Start Saving.

Trusted Water Care Experts

With 28+ years of experience, Mermaid Water Co. provides expert pool cleaning, water testing, and catchment system cleaning in Hawaii. Trusted for reliable service and local expertise, we keep your water clean, safe, and crystal clear.

KNOW WHATS IN YOUR WATER?

Accurate water testing is the first step to clean, safe, and healthy water. We test, analyze, and balance your pool or catchment water for crystal clear results.

Contact MERMAID WATER CO. for professional water testing you can trust.

WATER TESTING

KEEP EVERY GALLON.

Professional catchment cleaning without draining your tank.

Retail Pool & Water Supply Store

Visit our retail store for professional-grade pool, catchment, and water treatment supplies. We carry the products you need to keep your water clean, clear, and safe year-round.

Service & Maintenance

Protect your investment with routine maintenance and professional service. We provide pool cleaning, equipment inspections, water balancing, catchment maintenance, and preventative care.

We stock trusted industry-leading brands known for quality, performance, and reliability. From sanitizers and algaecides to filters and water treatment solutions, we’ve got you covered.

Premium Name-Brand Products

Why Choose Mermaid Water Service?

28+ Years of Experience • Water Chemistry Expertise • Reliable Service • Local Hawaiʻi Island Support

Need new equipment? We professionally install pumps, filters, UV systems, chlorinators, and other water treatment components to ensure your system operates efficiently.

Above-Ground Pool Solutions

From setup assistance to ongoing maintenance, we offer support for above-ground pool owners. Whether you’re installing a new pool or upgrading an existing one, we can help you enjoy worry-free swimming.

Professional Water Testing

Take the guesswork out of water care. Our expert water testing services help identify imbalances and provide customized recommendations to maintain optimal water quality.

Equipment Installation

Providing professional pool maintenance, catchment cleaning, water testing, and water treatment solutions.

© 2026 Mermaid Water Co. All Rights Reserved.

WATER YOU CAN TRUST. SERVICE YOU CAN COUNT ON.