The Controlled Tanks have a minimum storage capacity of 0.1 m³ and a maximum of 50 m³. The tanks are custom made and specialize in the creation of facilities for storage, filling, dosing and treatment of water endangering substances. The company is subjected to external quality insurance oversight by the technical control association of southern Germany. Lastly, these tanks complies to the Section 19 of the water resources law as well as the regulation of flammable liquids.