8 verified septic companies across 4 cities in Hawaii County. Compare ratings, services, and request free quotes from local providers.
Hawaii County, Hawaii — the largest county by land area in the United States — presents a distinctive set of challenges for homeowners and contractors who rely on onsite wastewater systems. With 8 verified septic companies listed across 4 cities in our directory, residents from Hilo on the windward coast to Kailua-Kona on the dry leeward side have access to qualified local providers. Much of Hawaii County lies outside municipal sewer service areas, meaning a large share of homes depend on private septic systems for wastewater treatment. The island's volcanic soil composition, which varies considerably from porous lava fields in the west to dense clay-heavy soils in wetter eastern areas, directly affects how septic systems are designed, installed, and maintained. Whether you own a rural property in Pāhoa or a subdivision home in Kailua-Kona, finding a contractor familiar with local soil conditions and county permitting requirements is an important first step.
Kailua-Kona, HI
⭐ 5.0 (6 reviews)
This website operates as an independent marketing and referral platform, connecting users with third-party service providers for various plumbing repair needs. While not a direct service provider, the platform facilitates connections to local plumbing specialists who can address issues such as drain cleaning, clogged toilets, leaky faucets, water heater problems, sewer line repairs, pipe repairs, garbage disposal issues, and sump pump services. The service emphasizes fast response and offers same-day or next-day appointments in most cases, with emergency service available in local areas. Users are connected directly to a specialist to describe their problem and arrange for expert repair at a fair price. The platform highlights that service availability, pricing, and scheduling are determined by the independent third-party service provider, and users are encouraged to request an upfront written estimate.
Hilo, HI
⭐ 5.0 (4 reviews)
Sewer Solutions is a licensed septic and sewer contractor serving Hilo and the Big Island of Hawaii. Operating under contractor license CT-38021-0, the company has over 10 years of experience in the industry. They provide septic system care, cesspool pumping, septic tank pumping, and complete septic system installation including aerobic sewer treatment systems and lift stations. The company offers 24/7 availability for emergency services and provides free estimates. Their office is located at 66
Pāhoa, HI
⭐ 5.0 (23 reviews)
Alani Bulldozing, LLC is a family-owned excavating contractor serving the entire Island of Hawaii from their Pāhoa location. Operating since 1990, the company has 25 years of experience providing excavation, land clearing, and septic system installation services throughout Hawaii County. They are fully licensed, insured, and bonded. The company specializes in land management using heavy equipment and handles excavating work in Hawaii's challenging wet, fertile terrain. Their service area include
Kailua-Kona, HI
⭐ 5.0 (1 reviews)
Kailua-Kona, HI
⭐ 4.7 (3 reviews)
Ono Septic Tank Systems operates in Kailua Kona on the Big Island of Hawaii, serving customers across the island since 1992. The company maintains constant inventory of Chemtainer septic tanks in 1000 and 1250 gallon capacities and 1000 gallon G&B fiberglass tanks. They stock all associated parts needed for septic system installations and offer service seven days a week, 24 hours a day by appointment after normal business hours. Water tanks ranging from 60 to 4,000 gallons and other Chemtainer p
Waimea, HI
⭐ 4.6 (5 reviews)
ABC Cesspool and Septic Pumping provides septic tank, cesspool, and high volume pumping services on the Big Island of Hawaii for residential, commercial, and industrial customers. Established in early 2005, the company is owned by Randy Miguel. Their fleet features trucks equipped with the latest technology and more than 200 feet of hose to service tanks of all sizes and depths. The company's standard service includes cleaning and rinsing all tank compartments and restoring yards to their origin
Hilo, HI
⭐ 4.4 (19 reviews)
SMART Plumbing Hawaii operates as a plumbing contractor serving Hilo, Hawaii. The company provides plumbing services to the Hilo area.
Hilo, HI
# Hawaii Cesspool Conversion Co. — Hilo, Hawaii Hawaii Cesspool Conversion Co. is a locally-rooted cesspool conversion specialist serving the Big Island with over 20 years of experience in Hawaii's unique regulatory and environmental landscape. The company handles the complete cesspool-to-septic conversion process in-house, including site evaluation, engineering, permitting, installation, and final Department of Health inspection. All systems installed are DOH-approved and fully compliant with Hawaii's cesspool conversion mandate. The team is licensed, insured, and fully certified to work throughout Hawaii's priority conversion zones—areas near drinking water wells, shorelines, and sensitive ecosystems where groundwater contamination poses the greatest risk. Hawaii Cesspool Conversion Co. offers free on-site assessments, transparent pricing, and grant and loan assistance to help property owners navigate the conversion process. Their expertise in Hawaii's land, environmental systems, and state regulations makes them equipped to handle conversions across varying property types and conditions on the island.
Hawaii County's septic landscape reflects the island's geographic and demographic diversity. Rural and semi-rural properties make up a significant portion of the county, particularly in areas like the Puna district around Pāhoa, where subdivision lots developed decades ago often rely on older cesspools or conventional septic systems. Hawaii state law has phased out cesspools in recent years, prompting many property owners to upgrade to approved septic or aerobic treatment systems. In wetter areas near Hilo, high rainfall and elevated water tables can place additional stress on drain fields, making pump-assisted or mound systems more common than standard gravity-fed designs. On the drier Kona coast, rocky lava substrates may require engineered alternative systems. System sizing depends on household occupancy and lot characteristics, and regular pumping is especially important given Hawaii's warm year-round temperatures, which can accelerate organic activity inside the tank.
Septic system permitting in Hawaii County falls primarily under the jurisdiction of the Hawaii State Department of Health, which administers the Wastewater Branch responsible for reviewing and approving onsite sewage disposal system plans statewide. County-level coordination occurs through the Hawaii County Department of Public Works and related agencies for building permit integration. Before installing, replacing, or significantly modifying a septic system, property owners are required to obtain the appropriate permits and have the system inspected upon completion. Point-of-sale inspections are not universally mandated by statute in Hawaii, but many real estate transactions include a septic inspection as a practical due-diligence measure. Homeowners seeking current rules, application forms, and approved system standards should consult the Hawaii State Department of Health's Wastewater Branch documentation as well as Hawaii County's building division for any locally applicable requirements. Always verify current requirements with your local health department.
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