Our Guarantee

If for any reason a customer is not completely satisfied with a product purchased from Black River paper Co., they many return any unused portion within 45 days for a full credit.  It is that simple!



in 1993 Black River Paper Co. joined THE UNITED GROUP, a national buying organization.  With over 325 members, and over 200 suppliers and an annual buying power of over 1.2 billion dollars.  The UNITED GROUP lives up to its philosophy that "with the collective buying strength of a network of privately owned distributorships, even the smallest member will have the purchasing power of the largest national organizations".   

The UNITED GROUP, Blue Diamond Hardware, Blue Diamond Chemical - all combine to make BLACK RIVER PAPER CO. your one source of supply for janitorial and maintenance products.


SINCE 1898


BLUE DIAMOND HARDWARE division was started in 1984 when Black River Paper Co. opened its' Hardware store.  Through a buying group with over 4000 stores, Blue Diamond Hardware can offer low prices on 40,000 items for building and hardware requirements.

Our History

BLACK RIVER PAPER CO was started as a privately owned business in 1898.  The warehouse consisted of a garage attached to the back of a medium sized house on Bradley Street in Watertown.  As the business grew and added new lines.  It was forced to move twice, settling at its current location in 1927.

In 1978 the BLUE DIAMOND CHEMICAL division was started.  Janitorial and maintenance cleaners and products soon became an established part of the product mix made to our specifications.  These quality products save time and money.  All of the cleaners are registered with New York State.  The Asphalt Release Agent is registered and approved in three other states.