Did you know that Elkhart Plastics makes more than 250,000 water and holding tanks for local and national Recreational Vehicle Manufacturers every year? With on-site mold building, engineering staff, and hundreds of water and holding tank molds to choose from, our Elkhart Plastics division is a full-service provider to manufacturers of RV’s all across the country.

Below are links to schematics and technical drawings for many of our rotomolded plastic water tanks manufactured here in the United States. We also have in-house engineering staff who can design custom water tanks to your exact specifications.

These rotationally molded,  plastic tanks are used throughout many different industries and in various applications.  Our company has been an industry leader in manufacturing these plastic tanks for years and we have the expertise you need to provide a quality product, delivered on time that meets or exceeds your specifications and requirements.

0-15 Gallon Water Tanks (PDF)

16 – 20 Gallon Water Tanks (PDF)

21 – 25 Gallon Water Tanks (PDF)

26 – 30 Gallon Water Tanks (PDF)

31 – 35 Gallon Water Tanks (PDF)

36 – 40 Gallon Water Tanks (PDF)

41 – 45 Gallon Water Tanks (PDF)

46 – 50 Gallon Water Tanks (PDF)

51 – 60 Gallon Water Tanks (PDF)

61 – 70 Gallon Water Tanks (PDF)

71 – 100+ Gallon Water Tanks (PDF)

The Right Manufacturer for Plastic Water Tanks

The engineers at Elkhart Plastics can help you design one of these units from scratch or help you modify an existing design. We are an American company that provides the highest quality rotational molded plastic water tanks. With our large capacity for production and multiple locations across North America, Elkhart Plastics can help you accomplish your goals.

Experienced in the RV Industry

Since our company opened in 1988, Elkhart Plastics has supplied the RV industry with top quality rotomolded plastic holding tanks and water tanks. We manufacture about 250,000 to 300,000 tanks each year for the RV industry. In addition to our work with plastic water tanks, we also produce plastic holding tanks, compartment liners, and other products for the RV industry.

Services & Equipment

This product is manufactured in our Elkhart and Ridgefield plants.

Elkhart Plastics performs the following services for plastic water tanks:


Please note: We are a manufacturer primarily serving OEMs. We do not provide individual products to consumers.

Plastic Water Tank Detail