Did you know that, in New York State, all facilities that store more than a total of 1,100 gallons of petroleum in aboveground and underground storage tanks must register those tanks? Any underground storage tank larger than 110 gallons must also be registered. Furthermore, all used oil tanks must be registered, regardless of capacity. There are over 22,000 registered underground storage tanks in New York State, with many more above ground tanks. Home heating oil tanks (and farm tanks, along with a few other situations) are excluded. Did you know that there are approximately 3 million residential heating oil tanks in New York State?