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Suffolk County approved septic (I/A OWTS) installers
All 40 installers on Suffolk County's Approved List of SIP Installers (revised 09-14-2026). To use county grant money, you must hire an installer from this list; the county pays the installer directly. [source]
A&A Sewer and Drain Maintenance, Inc.Rocky Point · 631-849-1599Affordable Cesspool Sewer & Drain Service, Inc.Islandia · 631-588-8400All Island Excavating Corp.St. James · 631-544-0700All Island Plumbing Inc.Holbrook · 631-563-3845Beltran Cesspools, Inc.Central Islip · 631-807-7698Bridgewater Environmental Services Inc.Westhampton Beach · 631-655-3066Brothers Three CesspoolsHampton Bays · 631-728-7867Cardo Site Development, Inc.Quogue · 631-653-4377Cesspool Pros, LLCAmityville · 631-254-1234Clear River Environmental Service Corp.Ronkonkoma · 631-467-5447CMM Sitework, Inc.Brookhaven · 631-286-3650Danny’s Cesspool Service, Inc.Riverhead · 631-727-6325Direct Drainage, Inc.East Patchogue · 631-475-0812Downs Land Concepts, LLC.Hampton Bays · 631-466-0441East End Excavating, Corp.East Hampton · 631-324-1718Emmons ExcavationSouthampton · 631-287-3900Fire Island Plumbing Company, Inc.Ocean Beach · 631-583-6500G. Melomo Excavating, Inc.Bohemia · 631-981-9067Grantem LLCGreenlawn · 631-557-5461J&C Contracting of East Hampton Inc.East Hampton · 516-885-0400John Willis Co, IncEast Patchogue · 631-758-6338JT & GB Construction CorporationEast Hampton · 631-375-0259KEM Site Development, LLCSouthampton · 631-283-8186Ken Rousell, Inc.Speonk · 631-668-2023Latham Sand & Gravel, Inc.Peconic · 631-734-6800Level Landscaping Corp.Moriches · 631-445-2262Mackay Sanitary Solutions, Inc.East Hampton · 631-329-1958Manorville Precast Corp.Manorville · 631-924-3500Micro Earth Moving, Inc.Sag Harbor · 631-725-1236Morris Cesspool, Sewer and Drain Service, IncPeconic · 631-765-3300Noyack Trucking & Excavation, LLC.Southampton · 631-283-2999Oscar’s Rock & Dirt, Inc.East Hampton · 631-774-5775Pond Construction CorpEast Norwich · 516-922-3960Quackenbush CesspoolsEast Hampton · 631-907-4426Ram Brothers Sitework, LLCAquebogue · 631-445-5091Sangiovanni Contracting Services, Inc.Huntington Station · 631-827-0042Shelter Island Sand, Gravel, & Contracting Inc.Shelter Island · 631-749-1040South Fork Septic Services, Inc.Southampton · 631-283-0333Squires, Pierson & Sons, Inc.Southampton · 631-283-1403TKF Excavation & Demolition, Ltd.Speonk · 631-878-2700
By office location
The county list gives each installer's office address, not the towns they serve.
- Amityville: Cesspool Pros, LLC
- Aquebogue: Ram Brothers Sitework, LLC
- Bohemia: G. Melomo Excavating, Inc.
- Brookhaven: CMM Sitework, Inc.
- Central Islip: Beltran Cesspools, Inc.
- East Hampton: East End Excavating, Corp., J&C Contracting of East Hampton Inc., JT & GB Construction Corporation, Mackay Sanitary Solutions, Inc., Oscar’s Rock & Dirt, Inc., Quackenbush Cesspools
- East Norwich: Pond Construction Corp
- East Patchogue: Direct Drainage, Inc., John Willis Co, Inc
- Greenlawn: Grantem LLC
- Hampton Bays: Brothers Three Cesspools, Downs Land Concepts, LLC.
- Holbrook: All Island Plumbing Inc.
- Huntington Station: Sangiovanni Contracting Services, Inc.
- Islandia: Affordable Cesspool Sewer & Drain Service, Inc.
- Manorville: Manorville Precast Corp.
- Moriches: Level Landscaping Corp.
- Ocean Beach: Fire Island Plumbing Company, Inc.
- Peconic: Latham Sand & Gravel, Inc., Morris Cesspool, Sewer and Drain Service, Inc
- Quogue: Cardo Site Development, Inc.
- Riverhead: Danny’s Cesspool Service, Inc.
- Rocky Point: A&A Sewer and Drain Maintenance, Inc.
- Ronkonkoma: Clear River Environmental Service Corp.
- Sag Harbor: Micro Earth Moving, Inc.
- Shelter Island: Shelter Island Sand, Gravel, & Contracting Inc.
- Southampton: Emmons Excavation, KEM Site Development, LLC, Noyack Trucking & Excavation, LLC., South Fork Septic Services, Inc., Squires, Pierson & Sons, Inc.
- Speonk: Ken Rousell, Inc., TKF Excavation & Demolition, Ltd.
- St. James: All Island Excavating Corp.
- Westhampton Beach: Bridgewater Environmental Services Inc.
Listed from Suffolk County's public approved list. Independent guide. Not affiliated with, endorsed by, or operated by Suffolk County, New York State, or any installer.
Sources
- Suffolk County – Approved List of SIP Installers (PDF) — revised 09-14-2026
- Suffolk County – Septic Grants Information Homepage — page accessed Oct 17, 2026
Last reviewed October 17, 2026. Program rules change; always confirm with Suffolk County Department of Health Services (631-852-5811, [email protected]).