The Norwesco Florida Only 300 Gallon Plastic Septic Pump Tank is a green, polyethylene pump tank built for septic dosing and effluent-handling duty in Florida installs. It measures 50" tall on a square 51" x 51" footprint and ships with a 20" lid for service access. If you have been searching "300 gallon septic tank," "Norwesco pump tank," or just "300 gallon tank," this is the unit that fits that spec.
Will it work for your install?
This is a 300-gallon pump tank in polyethylene, finished in green, with a 51" x 51" base and a 50" overall body height. The 20" lid gives you working access to set a pump, floats, and discharge plumbing inside the chamber. Filled to capacity with water it carries a full-water weight of 2,502 lbs, so size your excavation, bedding, and anchoring around that loaded figure - a pump tank runs full in normal operation, not empty. One thing worth planning for in Florida: an empty polyethylene pump tank will float if it is set in saturated soil or a high water table, so use the 2,502 lb full figure as your ballast benchmark and anchor the tank per local code rather than relying on backfill alone. Run the numbers with our Tank Sizing Calculator and Tank Sizing Guide to confirm the 300-gallon capacity matches your dosing volume and reserve before you order.
Fittings and sealing
The technical drawing on this page shows a 20" lid - that is the access opening the tank ships with. It does not arrive pre-plumbed: inlet, outlet, and pump-discharge penetrations are field-cut or specified separately, so plan to add the bulkhead fittings and grommets your layout requires. Whenever you cut a penetration, seal it with the correct grommet, gasket, or bulkhead sized to your pipe OD for a watertight, root-resistant chamber, and seat the 20" lid on its proper gasket. Note too that a lid riser or collar can add to the 50" body height, so set your final excavation depth from the drawing rather than the body dimension alone.
Approvals and the mistake to avoid
This is a Florida-only tank - configured and distributed for installation in Florida, so confirm it suits your local jurisdiction before purchasing. The biggest mistake on a septic pump tank is treating it as an interchangeable commodity across state lines: septic approvals are jurisdiction-specific, and a tank approved in one program may not carry the same standing in another. Our guide on Norwesco IAPMO and CSA B66 septic tank approvals explains how Norwesco septic approvals are scoped before you commit. This tank is built for standard septic effluent at roughly water density; if your dosing fluid is heavier than water, call us at 866-418-1777 for a higher-rated tank before you buy.
This tank ships LTL freight from Griffin, GA, quoted live to your ZIP code. Freight on a tank this size is priced by destination, so get an exact number with our Freight Cost Estimator or call 866-418-1777 and we will quote it to your delivery point. Check the technical drawing on this page for the lid and dimensional layout, then estimate your freight and place your order with confidence.
