Septic System Services

Suffolk and Nassau Counties, NY

Emergency Service

Free Estimates

Lifetime Installation Warranty

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Complete Septic Services for Long Island

Since 1991, John Willis Cesspool has been the premier name for septic system services in Suffolk and Nassau counties, NY. Our family-owned business brings over 45 years of experience to every job, making sure your septic systems operate efficiently.


We offer a wide range of services, from installations to maintenance, all covered by our lifetime workmanship warranty. As your neighbors, we're committed to maintaining the health of our community's wastewater systems.

Septic issues can happen at any time, which is why we're available 7 days a week with emergency services ready to address your urgent needs. Our team is fully licensed, insured, and certified in innovative/alternative onsite wastewater treatment systems (I/A OWTS), allowing us to handle complex septic challenges.


For dependable, professional septic services, contact us for a free, no-obligation, next-day estimate.

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Why Trust John Willis Cesspool

Emergency services

Free estimates

Lifetime installation warranty

Licensed, certified, and insured

45+ years of experience

Work with your insurance

John Willis Cesspool
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Drain Field Installation

Our drain field installation service ensures effective wastewater distribution. We design and implement drain fields tailored to your property's needs, maximizing your septic system's performance and lifespan.

Dry Well Installation

Dry wells are crucial for managing excess water on your property. We install dry wells to prevent flooding and water buildup, safeguarding your landscape and foundation from water damage.

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I/A OWTS Installation

As certified I/A OWTS installers, we provide innovative and alternative onsite wastewater treatment systems. These advanced solutions offer enhanced performance and environmental benefits, ideal for properties with challenging site conditions.

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Septic Inspection

Regular septic inspections help maintain system health. Our detailed inspections catch potential issues early, saving you time and money on future repairs.

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Septic Pump Installation

A well-functioning septic pump is essential for efficient wastewater management. We install quality septic pumps to guarantee reliable operation and extend your system's lifespan.

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Septic System Installations

We handle all types of septic system installations, from standard to advanced designs. Our team makes sure each installation meets local regulations and suits your property's specific needs.

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Septic System Maintenance

Regular upkeep is vital for a long-lasting septic system. Our comprehensive maintenance services keep your system running smoothly and prevent costly repairs.

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Septic Tank Pumping

Regular septic tank pumping prevents system failures. Our efficient service removes built-up solids, ensuring your tank continues to function properly.

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Septic Tank Repair

For septic tank repairs, our skilled technicians quickly diagnose and fix issues. We handle everything from small leaks to major repairs, using our crane service for hard-to-reach tanks.

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$25 OFF Line Cleaning

Get $25 OFF any line cleaning service

in Suffolk and Nassau counties, NY.

Call Now for Service

Not valid with any other offers or promotions. Restrictions apply. Must mention this coupon at the time of scheduling.
(631) 268-0870

$25 OFF Line Cleaning

Get $25 OFF any line cleaning service

in Suffolk and Nassau counties, NY.

Call Now for Service

Not valid with any other offers or promotions. Restrictions apply.
Must mention this coupon at the time of scheduling.
(631) 268-0870

$100 OFF Cesspools

Get $100 OFF a new cesspool system

installation by John Willis Cesspool.

Contact Us for Service

Not valid with any other offers or promotions. Restrictions apply.
Must mention this coupon at the time of scheduling.
(631) 268-0870
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Here's what our satisfied customers are saying...

At John Willis Cesspool, we are proud to provide professional septic system services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and aids others in making better decisions. Please leave a review of John Willis Cesspool and let others know what you think. Thank you.