Welcome to A 1 Tank located in Paso Robles California and providing the best quality steel tanks for your needs in California, Arizona, New Mexico, Nevada, Utah, Oregon and Idaho.  Steel water tanks and steel storage tanks are our specialty.

Used for bulk storage and application of liquid fertilizers, chemicals, food grade products, wine, olives, fruit and vegetable juices, as well as livestock feeds and water.  Our steel tanks sizes range from 100 gallons to 20,000 gallons. A1 Tank offer vertical, flat-bottom, open top containment, transport and grease interceptor chemical and fertilizer tanks in a variety of types, shapes and sizes.

A1Tank steel tanks come in a variety of colors, rugged impact resistant one piece seamless design with UV inhibitors added for longer tank life. Our tanks and accessories are non-corrosive. We also offer a wide variety of types and sizes of accessories available.



A1 Tank will protect the lifespan of your tank by having it externally painted and internally coated.

Each tank is different, and A1 Tank Services can provide expert recommendations for your storage tank coating and painting needs.

Selecting the proper internal coating is important to protect the tank from the acidic or alkaline effects of the product stored while also maintaining the purity of the product.  Each product has different properties and therefore each situation needs to be evaluated as to the best coating to apply.  Taking the time to determine the appropriate coating for your tank will increase the lifespan of your tank as well as prevent the need for premature re-coating.

External painting is dependent on the location and environmental conditions experienced by the tank.  The proper type of paint will vary based on humidity, aridity, snowfall, temperature variance, and other factors.

Contact us to find out more about internal tank coatings and external painting.

(805) 238-4431 or Toll Free (800) 248-2650 or info@a-1tank.com




We manufacture quality galvanized metal water storage tanks at our Paso Robles, CA location. All of our tanks include a 10-year Guarantee for Quality of Fabrication and Workmanship. We custom build / weld metal water storage tanks with capacities from 1,000 gallons to 20,000 gallons and place all water fittings where you need them up to 4″ inch NPT. We deliver statewide (ask for quote) in California, and offer custom painting and interior epoxy coating. We serve the needs of our customers (Government, Commercial, and Residential sales) from the time of inquiry to the final delivery and installation. Please browse through our site and see how we can help you. Don’t see the size or capacities storage tank you’re looking for or need a different size?
No Problem…Give us a call or email us today we’ll give you a quote…Thank You!