septic Tanks


Gillespie Precast offers septic tanks ranging from 1,000 gallons to 10,000+ gallons and up in Maryland and Delaware. We are a dealer/distributor of BioMicrobics components and SeptiTech components.

For systems smaller than 2,000 gallons in Delaware and Southern Maryland, please contact our Greenwood, DE office at 302-349-5528, for smaller systems on Maryland’s Eastern Shore, please contact our affiliate company Gillespie & Son at 410-778-0900 and they will be happy to assist you.


Sizes and Sourcing Information