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Need a compact 40 gallon fresh water tank that fits in tight spaces? The Elkhart Plastics 40 Gallon RV Fresh Water Tank EPI 1458 delivers substantial capacity in a space-efficient 31" x 25" x 14" footprint. With FDA-approved polyethylene construction and professional-grade 0.180" wall thickness, this tank provides reliable potable water storage for RVs, horse trailers, and marine vessels where space is at a premium.
Features & Specifications
- 40 Gallon Capacity - Ample fresh water storage for extended trips and off-grid adventures
- Compact Footprint: 31" L x 25" W x 14" H - Space-efficient design for tight compartments
- FDA-Approved Polyethylene - Food-grade material safe for potable drinking water with no chemical leaching
- Seamless One-Piece Construction - Rotomolded design eliminates weak joints and potential leak points
- Heavy-Duty Walls: 0.180" thickness - Superior durability and puncture resistance
- UV & Chemical Resistant - Durable material withstands harsh outdoor environments and temperature extremes
- Stain & Corrosion Resistant - Non-reactive polyethylene won't rust, corrode, or harbor bacteria
- Blank Tank Design - Custom fitting placement allows precise configuration for your specific plumbing needs
Why Choose the Elkhart Plastics 40 Gallon EPI 1458?
Finding a 40 gallon tank that fits in compact spaces can be challenging. The EPI 1458 solves this problem with a carefully engineered 31" x 25" footprint that maximizes capacity while fitting where larger tanks simply won't work. The seamless rotomolded construction creates a single-piece tank with uniform 0.180" wall thickness and no weak seams where cracks typically develop. FDA-approved virgin polyethylene ensures your drinking water stays safe and clean, while the stain-resistant material prevents discoloration and bacterial growth. Whether you're replacing a damaged tank or upgrading to larger capacity in a limited space, the EPI 1458 delivers professional-grade performance backed by Elkhart Plastics' reputation for quality.
Compare 40 Gallon RV Fresh Water Tanks
Not sure which 40 gallon fresh water tank is right for your RV? Compare the EPI 1458 with similar capacity options to find the perfect fit for your specific space constraints.
| Model | Capacity | Dimensions | Best For | View Details |
|---|---|---|---|---|
| Elkhart EPI 1458 | 40 Gallons | 31" x 25" x 14" | Compact footprint, tight spaces | Current Product |
| Elkhart EPI 1562W | 40 Gallons | 39" x 16" x 16" | Longer length, narrower width, similar height | View Tank → |
| Alpha 388BLANK | 40 Gallons | 39" x 18" x 14" | Longer length, narrower width, same height | View Tank → |
| Alpha VR20549WBLANK | 40 Gallons | 54" x 19.75" x 9" | Low-profile, extra-long chassis applications | View Tank → |
Pro Tip: The EPI 1458's balanced 31" x 25" footprint makes it ideal for square or rectangular compartments where you need maximum capacity without excessive length or width.
Technical Specifications
- Capacity: 40 Gallons (151.4 Liters)
- Length: 31 inches
- Width: 25 inches
- Height: 14 inches
- Material: FDA-approved virgin polyethylene (food-grade)
- Construction: Seamless one-piece rotational molding
- Wall Thickness: 0.180 inches (heavy-duty construction)
- Application: Fresh water / potable water storage only
- Certifications: FDA-approved for drinking water contact
- Color: Natural/translucent polyethylene
- Part Numbers: EPI 1458, W1682000
- Vendor: Elkhart Plastics/Ameri-Kart (Myers supplier)
What's Included
- 40 Gallon RV Fresh Water Tank (EPI 1458)
- Blank tank design allows custom fitting placement
- FDA-approved material certification
- Manufacturer warranty coverage
Note: This is a blank tank without pre-installed fittings. You can position fill connections, drain outlets, and vent fittings exactly where your RV requires them. Fittings sold separately.
Compatible Models & Alternatives
The EPI 1458's compact 31" x 25" x 14" dimensions make it ideal for tight RV compartments, horse trailers, and marine vessels where space efficiency is critical. If you need a different capacity or footprint, explore our complete selection of RV fresh water tanks or browse all Elkhart Plastics products. For custom installations, consider our range of tank fittings and accessories to complete your setup.
Frequently Asked Questions
Will this tank fit in my RV compartment?
The 31" x 25" x 14" dimensions make this tank ideal for compact spaces. Measure your available clearance carefully - you need at least 31" length x 25" width x 14" height. The balanced footprint works well in square or rectangular compartments.
Is this tank safe for drinking water?
Yes, this tank is manufactured from FDA-approved virgin polyethylene that's specifically certified for potable water contact. The material is food-grade and will not leach chemicals into your drinking water supply.
What fittings do I need to install this tank?
This is a blank tank without pre-installed fittings. Common requirements include a fill connection, drain outlet, vent fitting, and mounting hardware. Browse our tank fittings collection for compatible options.
How does the 0.180" wall thickness compare to other tanks?
The 0.180" wall thickness is Elkhart Plastics' standard heavy-duty specification, providing excellent durability and puncture resistance. This is thicker than many economy tanks which often use 0.125" or thinner walls.
Can this tank be used in a horse trailer?
Absolutely! The compact design and FDA-approved construction make it perfect for horse trailers, livestock trailers, and other mobile applications where you need safe drinking water storage in a limited space.
What's the difference between this and the Alpha 388BLANK?
Both are 40 gallon tanks with 14" height, but the EPI 1458 has a wider 25" width vs 18" for the Alpha. The EPI 1458 is also shorter in length (31" vs 39"), making it better for square compartments while the Alpha works better in narrow, elongated spaces.
Why Buy from Elkhart RV Parts?
As an authorized Elkhart Plastics dealer, we guarantee 100% authentic OEM-grade parts backed by manufacturer warranties. Our team specializes in RV plumbing components and can help you select the right tank, fittings, and accessories for your specific application. Every Elkhart Plastics tank we sell is FDA-approved for potable water and built to rigorous quality standards that ensure safe, reliable performance for years to come.
Need Help Finding the Right 40 Gallon Tank?
Our AI Live Chat can help you find the perfect fresh water tank for your specific space constraints and capacity requirements. Get instant answers about dimensions, compatibility, and installation.
| Material | Polyethylene |
|---|---|
| Width (inches) | 25 |
| Height (inches) | 14 |
| Length (inches) | 31 |
| Capacity (gallons) | 40 |
| Wall thickness (inches) | 0.18 |
- What is the capacity of the 40 gallon rv water tank? The tank has a capacity of 40 gallons.
- What are the dimensions of this rv water tank? The tank measures 31 inches by 25 inches by 14 inches.
- Is this water tank suitable for storing drinking water? Yes, it is made from premium FDA-approved polyethylene material that is safe for storing drinking water.
- Does this tank come with fittings installed? No, this is a blank tank with no fittings, but fittings can be added upon request and quote.
- How is the tank constructed to prevent leaks? The tank is made using roto-molding to create a seamless one-piece construction, providing superior strength and leak-proof reliability.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.