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Serving the Southeast for over 30 Years

Closeout Sale - 30% off (while supplies last)

Our Service

We have been providing a wide range of products for commercial and residential customers for over 30 years, including municipalities, irrigation contractors, landscapers, governments agencies, city parks and recreation areas.


Our experienced staff set the standard each day in all aspects of these areas while our untouchable customer service is at the top.

About Northwestern Supply

Northwestern Supply, Inc. began in 1992, serving as one of the only few local plumbing supply store in the Oconee area. Not only does Northwestern Supply supply plumbing needs, but began as the only irrigation supplier near Seneca.  Most plumbers would have to to travel upwards of Greenville, SC, over 45 minutes away to get their supplies.  Northwestern Supply, has not just catered to contractors, they also catered to home owners, as well as utility companies.


Northwestern Supply offers many different aspects of water and landscaping needs.  From residential and commercial irrigation, drip (low volume) irrigation, drainage, to utility needs and wastewater systems.  The staff is extremely knowledgable and have a combined 100+ years of experience.  Northwestern Supply is a family owned business which was started by Mike Roach.  In 2017, Mike passed away, and his two sons Chris and Zack Roach took ownership.

Northwestern Supply, continues to operate normally as it has in the past, but still continues to expand to serve the tri-state areas of South Carolina, North Carolina, and Georgia. We look forward to working with you on your projects.


Elite Customer Service

Same Day Delivery

Specialized Company

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