1,525-gallon black water storage tank built for safe potable water storage. Manufactured by Norwesco from virgin linear polyethylene (HDPE) rated to handle liquids up to 9.2 pounds per gallon. FDA approved for contact with potable water, ensuring safe storage for drinking water and food-grade liquids.

Specifications at a Glance

Every figure below is pulled straight from the live product record for this exact tank — the same data on the product page, so what you read here and what you buy never disagree.

Manufacturer	Norwesco
Manufacturer Part #	N-43808
Nominal Capacity	1525 Gallons
Footprint (Diameter)	93"
Overall Height	62"
Empty Weight	210 lb
Material	Polyethylene (HDPE)
Color	Black
Rated Specific Gravity	1.1
Certifications	FDA Approved, UV Stabilized
Warranty	3 Year
Shipping	OVS

Standards & Materials

ASTM D1998 — Standard Specification for Polyethylene Upright Storage Tanks. Governs wall-thickness and hydrostatic design for vertical rotomolded poly tanks of this class.
FDA 21 CFR 177.1520 — Olefin polymers. The food-contact regulation the FDA-grade resin in this tank is compounded to meet.
Specific gravity rating 1.1 — the tank is engineered for liquids up to 1.1× the density of water (water is about 8.34 lb/gal). Confirm your fluid’s SG before storage.

Product Overview

The 1,525 Gallon Plastic Water Storage Tank is large-volume water in a low, broad form. At 93 inches in diameter but only 62 inches tall, it holds over fifteen hundred gallons without towering — a profile that suits properties where a tall tank would be conspicuous, exposed to wind, or impossible to fill safely. It is a strong fit for irrigation reserves, household and stock supply, and rainwater storage where stability and a low silhouette outrank gravity pressure.

Norwesco rotationally molds the tank in a single seamless piece of virgin linear polyethylene, rated to 1.1 specific gravity for water-based liquids up to 9.2 pounds per gallon, with a 120 F / 48 C continuous-service ceiling. The black pigment shields the contents from sunlight, suppressing algae growth and giving the wall the highest UV durability for permanent outdoor placement.

The tank weighs 200 pounds empty and about 14,190 pounds full at 1.1 SG, a load a good compacted pad or slab carries without an engineered foundation. It comes with a factory 2-inch NPT outlet and an included 1.5-inch NPT inlet, and the 16-inch lid opens for tank-truck fills, float valves, and interior cleaning. Norwesco's 3-year manufacturing-defect warranty backs the tank.

Technical Drawing

Official Norwesco technical drawing — 1525 Gallon Plastic Water Storage Tank

Key Features and Specifications

1,525-gallon capacity — sized for safe potable water storage
Constructed from virgin linear polyethylene (HDPE) with 1.1 specific gravity rating — handles liquids up to 9.2 lbs/gal
62" tall x 93" diameter — compact vertical footprint
200 lbs empty, approximately 14,190 lbs when full at rated specific gravity
2" NPT outlet fitting — factory installed and leak-tested
1.5" NPT inlet fitting included
16" lid opening for fill, venting, and interior access
FDA approved for potable water and food-grade liquid contact
3 Year Warranty from Norwesco against manufacturing defects
UV-resistant black pigmentation provides maximum outdoor durability and inhibits algae growth in stored liquids
Rated for continuous service up to 120 F / 48 C
Seamless one-piece rotational molding — no seams, no welds, no leak points
Manufactured by Norwesco — a leading name in rotomolded polyethylene tanks
Install on a level, compacted surface. Ensure adequate clearance above for lid access and around the perimeter for plumbing connections and visual inspection
Ships via LTL freight — allow 2-3 weeks for delivery. Lift gate and residential delivery available at additional cost

Installation and Setup Guide

Fifteen hundred gallons across a nearly eight-foot-wide base is a lot of stable, low-slung weight — about 14,190 pounds full. The wide footprint spreads that load generously, but it also means you have a large area that has to be flat, because any dip under a tank this broad shows up immediately and concentrates stress.

The Pad

Build a compacted gravel pad or a concrete slab a few inches thick, level within a quarter inch across the full 93-inch diameter. That is a wide circle to screed true, so use a long straightedge and check it from several directions before the tank arrives. Site it on ground that drains, and clear every rock from the footprint — the broad, flat bottom of this tank will telegraph a single high point straight into the wall.

Plumbing

Feed the tank through the included 1.5-inch inlet and draw from the 2-inch outlet. The 62-inch height gives a moderate gravity head — enough for a passive feed to nearby lines, but plan a pump for irrigation pressure or any long run. Connect with flexible hose at the first foot of each fitting to accommodate seasonal wall movement, and fit an isolation valve so the tank can be taken offline for service.

Venting

The 16-inch lid carries the breather. Match a screened vent to your fastest fill or draw rate so the broad upper wall never sees vacuum on a hard pump-down. On a tank this wide, an unvented draw distorts the flat top quickly, so do not skip or undersize the vent.

Maintenance and Long-Term Care

As a potable tank, this one gets real water maintenance, and its low height makes the work manageable despite the volume — the lid sits at a reachable level and the whole wall is visible from the ground.

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Routine Inspection

Wall and level: Scan the broad wall for bulging or distortion and verify the tank still sits level; a wide tank reveals a settled pad as a tilted water line.
Fittings: Hand-snug the 2-inch outlet and 1.5-inch inlet if they have loosened under sustained head. No pipe wrenches on the poly threads.
Lid and vent: Confirm the 16-inch lid is fully seated and the vent screen is clear, keeping debris and insects out of the stored water.

Annual Disinfection

Drain and flush the floor once a year to remove settled sediment, then sanitize before refilling: a quarter cup of unscented household bleach per fifteen gallons, held two hours in the filled tank, then drained and rinsed until the chlorine smell is gone. The 16-inch lid gives good reach for cleaning the interior of a wide tank.

Sun and Frost

The black UV-loaded wall handles permanent sun; check the sun-facing side annually in extreme climates. Because a wide, shallow water body chills faster than a deep column, keep the tank in active turnover through winter or drain it where hard freezes are common.

Alternatives and Comparisons

At 1,525 gallons the meaningful comparison is footprint and silhouette, and this tank is built squarely for the low-profile side of that choice.

Wide-and-low vs. tall-and-narrow: This 62-inch-tall, 93-inch-wide tank stays stable in wind, hides below a fence line, and is easy to fill and inspect without a ladder. A taller 1,500-gallon vertical of similar volume claims less ground and delivers more outlet pressure, which favors tight lots and gravity-fed lines. Where wind exposure, sightlines, or fill safety are the priorities, the wide tank is the better neighbor; where ground space is scarce, the tall tank wins.

Frequently Asked Questions

How long will the 1525 Gallon Plastic Water Storage Tank last?

On a level pad and within its 1.1 SG and 120 F ratings, expect 15 to 20 years. The black, carbon-loaded wall is the longevity driver, shrugging off sunlight that would age a translucent tank, and the seamless build leaves no joint to fail. Annual draining and sanitizing keeps both the water and the tank in long-term shape.

What chemicals can I store in this tank?

It is an FDA-approved potable-water tank for drinking water, livestock, and irrigation, plus any water-based liquid within its 1.1 specific-gravity rating. It is not intended for fuels, solvents, or aggressive chemistry — choose a 1.5-SG liquid tank with a verified compatibility check for those.

What kind of foundation does a 1525-gallon tank need?

A full tank weighs about 14,190 pounds, well within the capacity of a compacted gravel pad or a concrete slab; no engineered foundation is needed. The critical detail is keeping the wide base flat and rock-free across its full 93-inch diameter, since an uneven pad is the top cause of early failure.

Does this tank come with a warranty?

Yes. Norwesco's 3-year warranty covers manufacturing defects in materials and workmanship under normal use, addressing molded-in faults rather than damage from a poor pad, overfilling, incompatible chemicals, or impact. Keep your paperwork and a photo of the installation.

Can I install this tank underground?

No. The vertical wall is not built to resist soil pressure, so burying this tank would risk collapse and void coverage. Our reinforced underground cisterns are the correct product for below-grade water storage.

Buying Considerations

Three things to verify before this 1,525-gallon tank ships. First, the footprint: you need a flat, drained area comfortably larger than eight feet across, which is the main siting constraint for a wide tank. Second, the fittings — it includes the 2-inch outlet and 1.5-inch inlet, so match your plumbing to those threads. Third, freight: at 200 pounds empty it ships LTL on a pallet, and a lift-gate plus a couple of helpers can place it. Listed at $1,460.00 before freight, quoted to your ZIP.