RV Fresh Water Tanks
Safe Drinking Water Storage
Explore unbeatable prices for RV fresh water tanks, available in nearly all sizes. When it comes to superior quality and outstanding performance, your search ends here. These custom RV water tanks are meticulously crafted using FDA-approved virgin polyethylene plastic resins and are nearly unbreakable.
Gain peace of mind on your travels with our RV freshwater tanks. Engineered for durability and strength, they outlast any other tanks available in the market. Constructed as a single solid piece, our tanks are thick, seamless, and completely free from worries about contamination or leaks. Designed to withstand the test of time, our tanks provide a long-lasting solution. For a perfect fit and secure connection, we offer customization options for dimensions and incorporate spin-weld fittings to ensure a secure plumbing connection.
Common sizes: 40 gallon rv fresh water tank, 50 gallon rv fresh water tank, 100 gallon rv fresh water tank. But also available in many more sizes. See charts below to find the perfect fit!
Custom RV Water Tanks - Certified for Safety
Our fresh water RV tanks comply with FDA regulation CFR 177.1520, making them perfectly suitable for storing drinking/potable water. With tank walls that are 3/8" thick, you’ll enjoy exceptional strength and an extended service life with this rv water tank. When your project demands unique sizes or shapes, our dedicated team is ready to assist you in finding the ideal RV fresh water holding tank that matches your specific needs.
Bow Shaped RV Water Tanks

Part No. | Capacity | Length | Width | Depth | Drawings |
---|---|---|---|---|---|
W-367 | 8 gallons | 19.5 | 13.5 | 7.5 | drawing (pdf) |
W-370 | 12 gallons | 24 | 15 | 12 | drawing (pdf) |
W-366 | 15 gallons | 36 | 13.5 | 7.5 | drawing (pdf) |
W-361 | 16 gallons | 15 | 25.25 | 13 | drawing (pdf) |
W-365 | 25 gallons | 59 | 13.5 | 7.5 | drawing (pdf) |
W-363 | 35 gallons | 66 | 15.5 | 9.81 | drawing (pdf) |
W-359 | 56 gallons | 90 | 17.5 | 12 | drawing (pdf) |
W-360 | 56 gallons | 90 | 17.5 | 12 | drawing (pdf) |
L Shaped RV Water Tanks

Part No. | Capacity | Length | Width | Depth | Drawings |
---|---|---|---|---|---|
W-14 | 7 | 17 | 9.5 | 19 | ask for details |
W-283 | 31 | 54 | 9 | 13.5 | drawing (pdf) |
W-278 | 31 | 96 | 19 | 8 | drawing (pdf) |
W-377 | 32 | 44 | 18 | 14.25 | drawing (pdf) |
W-432 | 32 | 45 | 18 | 10.5 | drawing (pdf) |
W-311 | 35 | 52 | 38 | 4.5 | drawing (pdf) |
W-454 | 36 | 108 | 14.5 | 5.75 | drawing (pdf) |
W-346 | 38 | 81 | 35 | 6 | drawing (pdf) |
W-286 | 39 | 59 | 36 | 4.5 | drawing (pdf) |
W-252 | 40 | 45.5 | 15.5 | 18 | drawing (pdf) |
W-290 | 40 | 51 | 25.5 | 9 | drawing (pdf) |
W-269 | 40 | 53 | 24 | 9 | drawing (pdf) |
W-43 | 40 | 70 | 21 | 12.75 | drawing (pdf) |
W-458 | 40 | 87 | 24.5 | 8.75 | drawing (pdf) |
W-253 | 50 | 54 | 36 | 9 | drawing (pdf) |
W-39 | 50 | 71 | 17.25 | 12.25 | drawing (pdf) |
W-419 | 92 | 53 | 36.5 | 13.5 | drawing (pdf) |
W-385 | 93 | 39 | 36 | 20 | drawing (pdf) |
W-219 | 100 | 65 | 22.75 | 22 | drawing (pdf) |
W-436 | 100 | 76 | 62 | 8.5 | drawing (pdf) |
Rectangle Shaped RV Water Tanks

Part No. | Capacity | Length | Width | Depth | Drawings |
---|---|---|---|---|---|
W-364 | 2 gallons | 9.75 | 9.75 | 6 | drawing (pdf) |
W-49 | 3 gallons | 16 | 7.5 | 6.5 | drawing (pdf) |
W-77 | 5 gallons | 15.5 | 15.5 | 5 | drawing (pdf) |
W-369 | 6 gallons | 16 | 12 | 8 | ask for details |
W-354 | 6 gallons | 17 | 12 | 8 | drawing (pdf) |
W-26 | 8 gallons | 19.25 | 13 | 9.5 | drawing (pdf) |
W-306 | 8 gallons | 36 | 16 | 4 | ask for details |
W-376 | 8 gallons | 54 | 6 | 7 | ask for details |
W-245 | 9 gallons | 17.625 | 15.625 | 8.25 | ask for details |
L-1 | 10 gallons | 18 | 16 | 8 | drawing (pdf) |
W-53 | 10 gallons | 24 | 14.5 | 7.5 | drawing (pdf) |
W-210 | 10 gallons | 24 | 15.5 | 8 | drawing (pdf) |
W-33 | 10 gallons | 31 | 15.5 | 6 | drawing (pdf) |
W-294 | 10 gallons | 40 | 25 | 9.25 | drawing (pdf) |
L-2 | 12 gallons | 24 | 16 | 8 | drawing (pdf) |
W-28 | 13 gallons | 30 | 14 | 8.25 | drawing (pdf) |
W-355 | 15 gallons | 17.75 | 14.75 | 14.75 | drawing (pdf) |
W-27 | 15 gallons | 22.25 | 13 | 13 | drawing (pdf) |
W-327 | 15 gallons | 23 | 16 | 11 | drawing (pdf) |
L-3 | 15 gallons | 30 | 16 | 8 | drawing (pdf) |
W-97 | 15 gallons | 33 | 21.5 | 5.75 | ask for details |
W-328 | 15 gallons | 48.5 | 10.75 | 7.875 | drawing (pdf) |
W-282 | 16 gallons | 30.125 | 17.25 | 8 | drawing (pdf) |
W-209 | 19 gallons | 36 | 15.5 | 8 | drawing (pdf) |
W-51 | 20 gallons | 21 | 17 | 14 | drawing (pdf) |
W-80 | 20 gallons | 24 | 17.75 | 12 | drawing (pdf) |
W-368 | 20 gallons | 24.5 | 15.5 | 13.5 | drawing (pdf) |
W-95 | 20 gallons | 30 | 18 | 9 | drawing (pdf) |
W-81 | 20 gallons | 33.25 | 17.25 | 8.75 | drawing (pdf) |
L-4 | 20 gallons | 36 | 16 | 8 | drawing (pdf) |
W-320 | 21 gallons | 21 | 21 | 12.5 | drawing (pdf) |
W-371 | 21 gallons | 29 | 20 | 9 | drawing (pdf) |
W-268 | 22 gallons | 35 | 14 | 12 | ask for details |
W-304 | 25 gallons | 25 | 21 | 12 | drawing (pdf) |
W-45 | 25 gallons | 27 | 20 | 12 | drawing (pdf) |
W-85 | 25 gallons | 34 | 17.5 | 11 | drawing (pdf) |
W-20 | 25 gallons | 42 | 16 | 10 | ask for details |
L-5 | 25 gallons | 48 | 16 | 8 | drawing (pdf) |
W-201 | 25 gallons | 52.5 | 12 | 10.75 | drawing (pdf) |
W-31 | 27 gallons | 21 | 18 | 18 | drawing (pdf) |
W-2 | 27 gallons | 35 | 15 | 13 | drawing (pdf) |
W-335 | 27 gallons | 42.5 | 17.5 | 9 | drawing (pdf) |
W-285 | 27 gallons | 44 | 17 | 9 | drawing (pdf) |
W-225 | 28 gallons | 34.25 | 17.5 | 12 | ask for details |
W-207 | 28 gallons | 35.25 | 15 | 13 | drawing (pdf) |
W-55 | 28 gallons | 52 | 12 | 11 | drawing (pdf) |
W-323 | 29 gallons | 25 | 24 | 12 | drawing (pdf) |
W-244 | 30 gallons | 29.75 | 25.75 | 9.5 | drawing (pdf) |
W-30 | 30 gallons | 32 | 20 | 12 | drawing (pdf) |
W-254 | 30 gallons | 33 | 20 | 11 | drawing (pdf) |
W-292 | 30 gallons | 34.5 | 18 | 12 | drawing (pdf) |
W-233 | 30 gallons | 35.5 | 19 | 10.75 | drawing (pdf) |
W-32 | 30 gallons | 42 | 28 | 6.5 | drawing (pdf) |
W-280 | 30 gallons | 44 | 14 | 12 | drawing (pdf) |
W-338 | 30 gallons | 45.5 | 22 | 7.75 | drawing (pdf) |
W-236 | 32 gallons | 50.5 | 20 | 8 | ask for details) |
W-373 | 32 gallons | 64 | 24 | 5.25 | drawing (pdf) |
W-237 | 33 gallons | 30 | 16 | 16 | drawing (pdf) |
W-332 | 33 gallons | 42 | 21.5 | 9 | drawing (pdf) |
W-234 | 34 gallons | 48 | 21 | 8 | drawing (pdf) |
W-22 | 35 gallons | 31.5 | 19.5 | 14.75 | drawing (pdf) |
W-316 | 35 gallons | 33 | 28 | 9 | ask for details |
W-202 | 35 gallons | 37 | 20 | 12 | drawing (pdf) |
W-75 | 35 gallons | 69 | 11 | 11 | drawing (pdf) |
W-324 | 38 gallons | 41.5 | 17.75 | 12.5 | ask for details |
W-266 | 38 gallons | 47 | 17 | 12.125 | ask for details |
W-3 | 38 gallons | 48.5 | 14 | 13 | drawing (pdf) |
W-205 | 38 gallons | 58.5 | 16.125 | 10 | drawing (pdf) |
W-227 | 38 gallons | 71.5 | 13 | 10 | drawing (pdf) |
W-259 | 39 gallons | 28.375 | 18 | 17.5 | drawing (pdf) |
W-257 | 39 gallons | 55 | 28 | 6.25 | drawing (pdf) |
W-248 | 40 gallons | 31 | 26 | 11.75 | drawing (pdf) |
W-291 | 40 gallons | 31.75 | 28 | 11.25 | drawing (pdf) |
W-307 | 40 gallons | 33 | 22.5 | 13.5 | ask for details |
W-293 | 40 gallons | 34 | 16 | 17 | drawing (pdf) |
W-313 | 40 gallons | 38 | 25 | 11 | ask for details |
W-17 | 40 gallons | 41 | 15.25 | 15.5 | ask for details |
W-284 | 40 gallons | 41 | 21 | 11 | drawing (pdf) |
W-296 | 40 gallons | 41 | 21 | 11 | drawing (pdf) |
W-204 | 40 gallons | 42.25 | 27 | 9.5 | drawing (pdf) |
W-96 | 40 gallons | 54 | 20 | 9 | ask for details |
W-295 | 40 gallons | 54 | 23.5 | 8 | drawing (pdf) |
W-1 | 40 gallons | 58 | 14 | 12 | drawing (pdf) |
W-226 | 40 gallons | 58 | 21 | 8 | ask for details |
W-270 | 40 gallons | 60 | 18 | 9.375 | drawing (pdf) |
W-314 | 40 gallons | 60 | 18 | 9.375 | ask for details |
W-231 | 41 gallons | 50 | 19 | 10 | drawing (pdf) |
W-48 | 41 gallons | 60 | 28 | 6 | drawing (pdf) |
W-380 | 43 gallons | 99 | 13.75 | 7.5 | ask for details |
W-250 | 44 gallons | 38 | 17 | 16 | drawing (pdf) |
W-38 | 44 gallons | 42 | 26.5 | 9.5 | ask for details |
W-309 | 44 gallons | 60 | 31 | 5.75 | ask for details |
W-24 | 45 gallons | 40 | 19 | 16 | drawing (pdf) |
W-35 | 45 gallons | 42 | 20 | 13 | ask for details |
W-25 | 45 gallons | 48 | 28 | 8 | drawing (pdf) |
W-264 | 45 gallons | 64 | 24 | 7.5 | drawing (pdf) |
W-79 | 47 gallons | 48 | 19.75 | 12 | drawing (pdf) |
W-279 | 48 gallons | 72 | 20 | 8 | drawing (pdf) |
W-249 | 50 gallons | 26 | 21.5 | 21 | drawing (pdf) |
W-275 | 50 gallons | 45 | 26 | 10 | ask for details |
W-289 | 50 gallons | 48 | 18 | 14.5 | drawing (pdf) |
W-318 | 50 gallons | 51 | 28 | 8.375 | ask for details |
W-330 | 50 gallons | 54.75 | 27 | 8 | drawing (pdf) |
W-208 | 50 gallons | 57 | 36 | 6 | drawing (pdf) |
W-228 | 50 gallons | 64 | 32 | 6 | drawing (pdf) |
W-271 | 50 gallons | 68 | 13.5 | 13.5 | drawing (pdf) |
W-212 | 52 gallons | 58 | 24 | 9 | drawing (pdf) |
W-12 | 53 gallons | 30.25 | 24.5 | 17.25 | ask for details |
W-305 | 54 gallons | 55 | 28 | 8.375 | drawing (pdf) |
W-403 | 55 gallons | 45 | 23 | 12.75 | ask for details |
W-302 | 55 gallons | 51 | 21 | 13 | drawing (pdf) |
W-4 | 55 gallons | 60 | 20.5 | 11 | drawing (pdf) |
W-76 | 57 gallons | 48 | 24 | 12 | drawing (pdf) |
W-300 | 60 gallons | 48 | 21.5 | 14.5 | drawing (pdf) |
W-74 | 60 gallons | 50 | 18 | 16 | drawing (pdf) |
W-276 | 60 gallons | 53.5 | 21 | 13 | drawing (pdf) |
W-277 | 60 gallons | 57 | 28 | 9 | drawing (pdf) |
W-37 | 60 gallons | 70 | 26 | 8 | ask for details |
W-59 | 60 gallons | 79.25 | 15.75 | 11.5 | drawing (pdf) |
W-331 | 62 gallons | 50 | 32 | 9 | drawing (pdf) |
W-223 | 65 gallons | 34 | 24 | 18.5 | ask for details |
W-362 | 65 gallons | 39.75 | 23.75 | 16.25 | drawing (pdf) |
W-241 | 65 gallons | 60 | 22 | 11.5 | drawing (pdf) |
W-220 | 68 gallons | 42.5 | 39 | 9.5 | drawing (pdf) |
W-84 | 68 gallons | 48.5 | 26 | 13 | drawing (pdf) |
W-213 | 72 gallons | 34.5 | 23 | 21.5 | drawing (pdf) |
W-34 | 74 gallons | 65 | 20.75 | 13 | drawing (pdf) |
W-251 | 80 gallons | 59 | 49.5 | 7 | drawing (pdf) |
W-315 | 93 gallons | 71 | 27 | 11.5 | ask for details |
W-218 | 95 gallons | 41 | 25.25 | 22 | drawing (pdf) |
W-230 | 97 gallons | 67 | 48 | 7 | drawing (pdf) |
W-214 | 98 gallons | 52 | 26 | 17 | drawing (pdf) |
W-221 | 100 gallons | 36 | 27.5 | 23.5 | drawing (pdf) |
W-101 | 100 gallons | 50 | 40 | 12 | drawing (pdf) |
W-68 | 103 gallons | 59.25 | 23.625 | 17.75 | ask for details |
W-63 | 105 gallons | 46.5 | 33 | 16 | drawing (pdf) |
W-88 | 105 gallons | 48 | 24 | 21.5 | drawing (pdf) |
W-60 | 105 gallons | 79.25 | 27 | 11.5 | drawing (pdf) |
W-310 | 105 gallons | 92 | 27.5 | 10 | ask for details |
W-308 | 107 gallons | 94 | 27 | 9.75 | ask for details |
W-238 | 128 gallons | 64.5 | 40 | 11.5 | ask for details |
W-347 | 132 gallons | 65 | 38 | 12.5 | drawing (pdf) |
W-239 | 140 gallons | 64.5 | 43.5 | 11.5 | drawing (pdf) |
W-272 | 142 gallons | 60 | 43 | 13.75 | drawing (pdf) |
W-108 | 145 gallons | 50 | 31.25 | 22 | drawing (pdf) |
W-69 | 145 gallons | 69.75 | 44 | 11 | ask for details |
W-56 | 160 gallons | 64.75 | 43 | 13.75 | drawing (pdf) |
W-345 | 163 gallons | 65 | 30.5 | 19.25 | drawing (pdf) |
W-372 | 188 gallons | 62 | 40 | 17.5 | drawing (pdf) |
W-476 | 300 | 96 | 30 | 24 | drawing (pdf) |
W-475 | 375 | 96 | 30 | 30 | drawing (pdf) |
Rectangle Shaped RV Water Tanks with Rails

Part No. | Capacity | Length | Width | Depth | Drawings |
---|---|---|---|---|---|
W-78 | 25 | 47 | 22.625 | 6.5 | drawing (pdf) |
W-357 | 30 | 46.25 | 31.5 | 6 | drawing (pdf) |
W-235 | 30 | 54 | 22 | 6.5 | drawing (pdf) |
W-247 | 38 | 45 | 22 | 10.5 | drawing (pdf) |
W-356 | 40 | 57 | 35 | 6 | drawing (pdf) |
W-206 | 40 | 60.5 | 20.75 | 8.5 | drawing (pdf) |
W-336 | 45 | 56 | 30 | 7.75 | drawing (pdf) |
W-434 | 50 | 57 | 35 | 6.5 | drawing (pdf) |
W-342 | 52 | 58 | 31 | 7 | ask for details |
W-301 | 53 | 60 | 39.5 | 5.5 | drawing (pdf) |
W-337 | 54 | 54.5 | 28.5 | 9 | drawing (pdf) |
W-216 | 55 | 67 | 32 | 7 | drawing (pdf) |
W-232 | 57 | 56.625 | 28.5 | 9 | drawing (pdf) |
W-333 | 57 | 57 | 28.5 | 9 | drawing (pdf) |
W-334 | 66 | 42.5 | 39 | 10 | drawing (pdf) |
W-341 | 72 | 60 | 53 | 5.5 | ask for details |
W-340 | 90 | 60 | 52.5 | 7 | drawing (pdf) |
W-439 | 97 | 57 | 39.5 | 11 | drawing (pdf) |
W-348 | 100 | 65 | 39.5 | 9.875 | drawing (pdf) |
W-352 | 105 | 60 | 39.5 | 11 | ask for details |
Wedge Shaped RV Water Tanks

Part No. | Capacity | Length | Width | Depth | Drawings |
---|---|---|---|---|---|
W-358 | 8 gallons | 19.75 | 17.75 | 8 | drawing (pdf) |
W-375 | 17 gallons | 24.5 | 22 | 9 | drawing (pdf) |
W-274 | 65 gallons | 69 | 24.25 | 10.75 | ask for details |
W-273 | 70 gallons | 73.75 | 24.25 | 10.75 | ask for details |
W-211 | 72 gallons | 61.75 | 24 | 13 | drawing (pdf) |
W-281 | 81 gallons | 70 | 26.75 | 11.75 | drawing (pdf) |
W-349 | 82 gallons | 48 | 40.5 | 11 | ask for details |
W-224 | 88 gallons | 73.75 | 24.25 | 12.75 | ask for details |
W-353 | 93 gallons | 59 | 36.5 | 11.375 | drawing (pdf) |
W-303 | 97 gallons | 73 | 24.75 | 14 | drawing (pdf) |
W-215 | 100 gallons | 78 | 26 | 14 | drawing (pdf) |
W-99 | 105 gallons | 60 | 40.5 | 11.25 | ask for details |
W-374 | 107 gallons | 76 | 38.5 | 10.125 | ask for details |
W-350 | 108 gallons | 76 | 40 | 10 | ask for details |
W-378 | 110 gallons | 57 | 32 | 16 | ask for details |
W-93 | 150 gallons | 67.5 | 40.5 | 14.25 | drawing (pdf) |
Our friendly staff is here to help you get the exact product you need!
Seamless Integration and Optimal Efficiency
Experience the exceptional strength and durability of our custom water tanks. Designed with a one-piece roto-molded construction, our tanks are incredibly robust, eliminating the risk of cracks and leaks. Featuring female NPT openings and spin-weld fittings, our tanks seamlessly integrate into your RV plumbing system, making installation a breeze.

Easy Ordering Process
At One Clarion, we recognize the uniqueness of every RV, which is why we offer the flexibility to design and create a custom RV fresh water tank based on your precise specifications. With no pre-drilled holes limiting your choices, you have the freedom to determine the placement of holes and fittings on your tank, ensuring a perfect fit for your space and requirements.
Here's a straightforward step-by-step guide to help you get started:
Complete a tank drawing with accurate dimensions and desired features. Indicate the preferred port locations on the drawing.
- Our dedicated team will carefully review your drawing and promptly get in touch to discuss it further. We'll provide valuable feedback and suggestions to enhance your design for optimal functionality.
- We'll work closely with you until you're fully satisfied with the final design. Once approved, we'll promptly process your order, ensuring a seamless experience from start to finish.
- To ensure precise fulfillment of your requirements, it is highly recommended to provide detailed information about the sizes and locations of your tank components. If you have any uncertainties or require adjustments, our team is readily available to assist you throughout the process.
Please note that mounting straps are not included with this tank, and it is not suitable for gasoline fuel storage.
If you require a different type of tank, our team is more than capable of helping you find the perfect custom solution to meet your specific needs. Experience the convenience and reliability of a custom-designed RV water tank today. Let us bring your vision to life and deliver a superior water storage solution tailored exclusively for you.
Our friendly staff is here to help you get the exact product you need!
RV Accessories
At One Clarion, we understand the importance of customizing your RV experience to match your unique needs and requirements. From spin-weld fittings to versatile compartments and battery boxes, we have everything you need to go along with your RV fresh water tank.
Spin-Weld Fittings for Secure Connections
Achieve reliable and secure connections with our polyethylene fittings, expertly crafted using state-of-the-art spin welding technology. Through this advanced process, we ensure the creation of robust and long-lasting joints that are completely leak-proof and resistant to breakage. Our fittings are meticulously manufactured to match your specific tanks, guaranteeing a precise and secure connection that will endure over time.
Versatile Storage
Make the most of your RV's storage capacity with our diverse range of compartments. Whether you prefer rounded corner open-ended, square corner open-ended, or square corner top and end compartments, we have various sizes available to suit your needs. Thoughtfully designed, these compartments offer convenient storage options, allowing you to efficiently organize your belongings. Explore our comprehensive selection of sizes and shapes to discover the perfect compartments for your requirements.
See: Custom Storage Compartments
Battery Boxes for Protection
Ensure optimal protection for your marine battery with our selection of battery boxes. These sturdy boxes not only keep your battery securely in place but also shield it from potential hazards such as tipping, accidental short-circuiting, and corrosion. Browse through our range of available battery box sizes to find the perfect fit for your marine battery, offering you peace of mind and maximum battery longevity.
Sustainable Water Storage Solutions
At One Clarion, we prioritize sustainability. Our custom plastic RV tanks offer an environmentally friendly solution for water storage. Manufactured with non-toxic materials, our tanks contribute to low carbon emissions throughout their life cycle. Built to withstand corrosion, leak-proof, and resistant to UV damage, our tanks outlast others in longevity and durability. By choosing our flexible and cost-effective custom RV water tanks, you actively reduce your carbon footprint while enjoying reliable water storage.
Experience the Difference with One Clarion
Whether you're looking for a 40 gallon RV freshwater tank, a 50 gallon RV Freshwater Tank, a 100 gallon fresh water tank, or any other size of custom RV water tank, we have the solution. These tanks are built to last, and are priced to sell. See for yourself and call us!
Our friendly staff is here to help you get the exact product you need!
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