NSF Product and Service Listings

These NSF Official Listings are current as of Thursday, January 15, 2026 at 12:15 a.m. Eastern Time. Please contact NSF to confirm the status of any Listing, report errors, or make suggestions.

Alert: NSF is concerned about fraudulent downloading and manipulation of website text. Always confirm this information by clicking on the below link for the most accurate information: http://info.nsf.org/Certified/PwsChemicals/Listings.asp?Company=C0626886&Standard=060&

NSF/ANSI/CAN 60
Drinking Water Treatment Chemicals - Health Effects


 
Tarheel Contractors Supply, Inc. 
162 Porter Road
Rock Hill, SC 29730 
United States 
800-218-0492 
803-329-9200
Visit this company's website

Facility : Rock Hill, SC


Miscellaneous Water Supply Products[1]
Trade Designation Product Function Max Use
ClayBuster EV Drilling Fluid
Well Drilling Aid		 NA
Drill-Flo HD Drilling Fluid
Well Drilling Aid		 NA
Zan-Flo-HD Drilling Fluid
Well Drilling Aid		 NA 

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according
    to the manufacturer's use instructions. Certification of these products is based on
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used to 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters
    in length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is
    equal to the combined volumes of the casing and the screen, plus an
    additional amount removed through the well disinfection and development
    (90% removed).

Number of matching Manufacturers is 1
Number of matching Products is 3
Processing time was 0 seconds