Call us today
(607) 359-3739 or (607) 962-1641

Retail Store located in Painted Post, NY

TERWILLIGER'S, LLC - "We service what we sell!"

Terwilliger's LLC is a ground water specialist company located in Painted Post, NY providing well drilling, pump service, water conditioning & treatment as well as septic and excavation services . We have a retail store located at 2499 Addison Road in Painted Post, just east of Addison, NY. We stand behind the product we well and the service we provide.

We strive to earn every customers' trust whether it be in our field service or retail sales. We pride ourselves in the knowledge we have in the products we sell and the service we provide. You'll find that our customer satisfaction is a priority in all that we do.
We offer free estimates for our services and invite you to stop in or call us any time to discuss your water or septic needs.

Our Services

Well Drilling & Pump Service - NYS & PA Certified, it's the law and it protects you and your groundwater!
We have low rates and options to best serve your well drilling and pump system needs.....
•  Air Rotary, Mud Rotary and Cable Tool Drilling available
•  All rotary drilled wells are pressure grouted to protect from surface water contamination @ no extra charge
•  We install Goulds Pumps with a 5 year warranty
•  Residential and Commercial Drilling
•  Well Cleaning & Redevelopment
•  Constant Pressure systems available - city water pressure on a well!
•  Free Estimates
•  Fully Insured
Water Conditioning & Treatment - We only sell and install industry proven systems that are serviceable for years to come. We have customers with units over 20 years old that are still serviceable.
•  Our metered, "On Demand" systems are efficient and save you money!
•  Softeners, Sulfur & Iron Bacteria Sanitizer Units, Sediment, UV, Chlorination and Colloidal Clay filtration
•  FREE WATER TESTING on site for hardness, iron, sulfur, chlorides, TDS, iron bacteria
•  De-chlorination units to remove chlorine from city water
Septic & Sewer Systems - We offer complete septic and sewer services to include:
•  New system installation
•  Septic system repair
•  Tank location and pumping services
•  Public sewer hook-up
•  Septic and Sewer pipe repair and replacement
•  Septic tank replacement
•  Pump station servicing and repair
Call us today to discuss your water and septic/sewer needs, we have the solution and "We service what we sell!"

Our Team

Terwilliger's LLC is committed to providing the best possible quality service. Our expert team has years of experience with pump systems, water conditioning and treatment and taking care of all your water and septic needs. Our servicemen are certified for water well pump service as required by New York State and Pennsylvania to service well water systems and we are fully insured.
We work efficiently, which saves you money, and we work hard to ensure that your system is operating correctly. When it comes to quality, we are the answer!
We have been in business since 1965 and continue to strive to give our customers quality service with integrity.

Send us a message

Hours of operation

Monday - Friday: 8am - 5pm 
Saturday: 8am - noon

Contact information

2499 Addison Road
Painted Post, NY 14870

(607) 359-3739
(607) 962-1641


Visit our retail store for all of your water supply, electrical and gas needs!

Conveniently located to serve the Twin Tiers Region of NY & PA

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