2500 Gallon Plastic Water Storage Tank - Black (98" x 86"): Complete Buyer's Guide
2500 Gallon Plastic Water Storage Tank - Black (98" x 86") from Norwesco.
Technical Drawing
Official Norwesco technical drawing — 2500 Gallon Plastic Water Storage Tank - Black (98" x 86")
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.
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 1.0 — the tank is engineered for liquids up to 1.0× the density of water (water is about 8.34 lb/gal). Confirm your fluid’s SG before storage.
Installation and Setup Guide
A 2,500-gallon water tank standing 86 inches tall on a 98-inch base is a substantial reservoir, and full of water it weighs in the neighborhood of ten tons. That is the number to keep front of mind: the installation is really a foundation job, because the tank itself is sound out of the mold and almost every field problem traces back to what it sits on.
Building the Pad
This tank wants a reinforced concrete slab or a deep, well-compacted gravel pad sized for its loaded weight and flat across the full 98-inch diameter. A high spot under a tank this heavy concentrates tons of force into a small patch of wall, so screed the surface true and confirm it with a long level before delivery. Site it on ground that drains and grade the surroundings so runoff never works under the base.
Setting and Plumbing
Allow generous clearance around the tank — three feet or so — for filling, inspection, and service, not the token gap a small tank needs. Plumb your outlet with schedule 80 PVC and keep the first foot of any connection flexible so the polyethylene can expand and contract through the seasons without cracking the fitting. Support every line independently and add an isolation valve so the tank can be taken offline.
Venting
Water leaving the tank must be replaced by air entering it, and at this volume that air exchange is significant. Fit a screened vent in the lid sized to your fastest fill or draw rate; a pump that empties the tank faster than air can enter will pull a vacuum and buckle the wall. The screen keeps insects and debris out of the stored drinking water.
Maintenance and Long-Term Care
This is a potable tank, so the routine is genuine water maintenance: keep the structure sound under ten tons of load and reset the interior on an annual cycle. The black wall blocks light and suppresses algae, but sediment still settles and a tank feeding people or stock deserves a yearly clean.
Regular Inspection
- Foundation: Check the slab and the ground around it for cracking or settlement a few times a year. A corner that drops under this weight shifts the load in ways the tank was not built to take.
- Wall and fittings: Walk the wall for bulging or distortion, low down where pressure peaks, and hand-snug any fitting that has crept. The black surface chalks slowly long before it fails.
- Lid and vent: Confirm the lid seats fully and the vent screen is clear so nothing reaches the water.
Annual Sanitizing
Once a year, drain the tank, flush the sediment from the floor, and disinfect before refilling. Use the potable standard of a quarter cup of unscented household bleach per fifteen gallons, hold the chlorinated water two hours, then drain and rinse until the chlorine smell clears. It is the same disinfection a municipal operator uses, scaled to a 2,500-gallon tank.
Sun and Frost
The black pigment and resin UV package are built for permanent outdoor exposure; a yearly look at the sun-facing wall is enough in harsh-sun regions. In freezing climates keep the tank in active turnover or drain it for winter, since a full tank that ices can split.
Alternatives and Comparisons
At 2,500 gallons the meaningful comparison is shape and color, and this black tank is built for stable, light-blocked outdoor water storage.
This tank against its neighbors: At 86 inches tall on a 98-inch base it sits relatively low and broad for its volume, which keeps it stable and easy to fill without a tall ladder. A taller 2,500-gallon vertical claims less ground and adds outlet pressure for gravity-fed lines. The black pigment is the right call for a tank held in sunlight, blocking the light that turns a translucent or lighter tank green; choose a lighter color only where the tank lives shaded or indoors.
Other -Gallon Options
Frequently Asked Questions
How long will the 2500 Gallon Plastic Water Storage Tank - Black (98" x 86") last?
On a sound, level base and used as a water tank within normal polyethylene temperature limits, this tank readily delivers 15 to 20 years. The black, UV-loaded wall is built for permanent sun exposure, and the seamless rotomolded shell has no joint to fail. An annual drain-and-sanitize keeps both the water and the tank in long-term condition.
What chemicals can I store in this tank?
This is an FDA-approved potable-water tank, so its job is clean drinking, livestock, and irrigation water, along with water-based liquids within the tank's rating. It is not built for fuels, solvents, or aggressive industrial chemistry. If you need to store chemicals, choose a dedicated 1.5-SG liquid-storage tank and check a compatibility chart first — this water tank is the wrong tool for that duty.
Does this tank come with a warranty?
Yes. Under normal use, Norwesco's 3-year warranty covers molded-in flaws like pinholes, cracks, and fitting defects in materials and workmanship. It does not cover damage from a poor foundation, overfilling, incompatible chemicals, or impact. Hold onto your receipt and a photo of the finished installation.
Can I install this tank underground?
No. This is an above-ground tank whose vertical wall is not engineered to resist soil pressure; burying it would risk collapse and void the warranty. For below-grade water storage, our underground cisterns are ribbed and reinforced specifically for that load.
Buying Considerations
Three things to settle before this 2,500-gallon tank ships. First, the base: it needs a level slab or compacted pad better than eight feet across, sized for roughly ten tons of full weight. Second, your plumbing — confirm the outlet thread and have schedule 80 fittings on hand. Third, freight, which is the big one: a tank this size ships oversized on a dedicated truck and needs a forklift to unload, not a hand-off at the curb. Listed at $2,200.00 before freight, quoted to your ZIP.
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