City of Lewisville Environmental Control Services Laboratory
Water testing lab in Lewisville, Denton County, Texas.
Independent directory. Listings come from the TCEQ Public Water System Lab Map Table (updated 03/26/2026). These labs are accredited for public drinking-water samples; call first to confirm they accept private-well samples, which tests they run, sample bottles, drop-off hours and price.
City of Lewisville Environmental Control Services Laboratory
897 Treatment Plant Road, Lewisville, TX 75057 · map (OpenStreetMap)
Phone: (972) 219-3548
Bacteria (total coliform / E. coli)