Check out our product review of the best black water tank for motorhome. We tried 10 models and can tell you the absolute best varieties.
In Hurry? Checkout Our Top Pick Of Best Black Water Tank For Motorhome.
Our Top Pick
9.7/10 our score
Best Black Water Tank For Motorhome
| Rank | Product Name | Score |
|---|---|---|
|
1  |
Walex Bio-Pak RV Black Holding Tank Deodorizer and Digester, Natural Enzyme Formula, Alpine Fresh 10-Pack |
9. 7 |
|
2  |
Camco 22990 25ft RhinoFLEX 5/8" ID Gray/Black Water Tank Clean Out Hose | Ideal For Flushing Black Water, Grey Water or Tote Tanks , Orange |
9. 5 |
|
3 |
Unique Sensor Cleaner Liquid for RV and Boat Black Water Holding Tanks 32 oz. - 41J-1 |
9. 1 |
|
4 |
Unique Tank Cleaner Liquid for RV and Boat Black Holding Tanks 32 oz. - Unclogs Holding Tanks, Breaks Through Pyramid Plugs - 41H-1 |
8. 8 |
|
5 |
Class A Customs 18.5 Gallon RV Waste Black Water Holding Tank WT-1850 |
8. 6 |
|
6 |
GET SERIOUS RV, Boat, Camper Chemical Toilet Holding Tank Treatment and Deodorizer. Works Faster Than Tablets or Packs in Grey and Black Water. Concentrated with Stress Relief Fragrance |
8. 2 |
|
7 |
Class A Customs 31 Gallon RV Waste Black Water Holding Tank WT-3100 |
8. 0 |
|
8 |
Class A Customs 27 Gallon RV Waste Black Water Holding Tank WT-2700 |
7 .7 |
|
9 |
Class A Customs 28 Gallon RV Waste Black Water Holding Tank WT-2800 |
7. 4 |
|
10 |
Class A Customs 38 Gallon RV Waste Black Water Holding Tank WT-3800 |
7. 2 |
1. Walex Bio-Pak RV Black Holding Tank Deodorizer and Digester, Natural Enzyme Formula, Alpine Fresh 10-Pack
9.7/10 our score
- No need for special toilet paper
- Deodorizes and breaks down waste and paper
- Pre-packaged portion control - no measuring or pouring
- Non-staining color
- Septic tank safe
2. Camco 22990 25ft RhinoFLEX 5/8" ID Gray/Black Water Tank Clean Out Hose | Ideal For Flushing Black Water, Grey Water or Tote Tanks , Orange
9.5/10 our score
- Ideal for flushing black water, grey water or tote tanks
- Keep contaminants separate from your drinking water hose or garden hose
- Compatible with standard garden hose threads
- Bright orange color helps prevent hose mix ups
- Made of durable PVC
3. Unique Sensor Cleaner Liquid for RV and Boat Black Water Holding Tanks 32 oz. - 41J-1
9.1/10 our score
- CLEANS & RESTORES BLACK TANK SENSORS in RV and boat holding tanks. Normally works in 12-72 hours. No driving necessary.
- BREAKS DOWN & DISSOLVES waste that is clinging to your sensor probes, allowing them to function properly again.
- WORKS ON OLD & NEW PROBLEMS. Reverses years of waste accumulation. Digests solid waste, toilet paper, and residual sludge.
- STRONGER & MORE POWERFUL. Powered by the most effective activated bio-enzymatic cleaners available. One bottle contains more active ingredients than any other leading sensor cleaner.
- TRUSTED & EFFECTIVE. Won’t damage septic systems. Proudly made in the USA. Unique Sensor Cleaner is simply the strongest, most effective sensor cleaner available.
4. Unique Tank Cleaner Liquid for RV and Boat Black Holding Tanks 32 oz. - Unclogs Holding Tanks, Breaks Through Pyramid Plugs - 41H-1
8.8/10 our score
- Unclogs black tanks in RVs and boats. Typically unclogs tanks in 12-72 hours. No driving necessary.
- Powered by the most advanced bio-enzymatic blend available. Contains higher concentrations of activated cleaners than all leading tank cleaners.
- Clears all types of clogs including pyramid plugs, compacted waste inside black tanks, and blocked plumbing lines.
- Breaks down solid waste, including toilet paper, poop, and residual sludge - no matter how old it is.
- Solves old and new problems. Can be used for routine maintenance and deep cleaning.
5. Class A Customs 18.5 Gallon RV Waste Black Water Holding Tank WT-1850
8.6/10 our score
- 18.5 Gallon Capacity RV Black / Waste Water Holding Tank Manufactured by Class A Customs Part # WT-1850 – RV Black Water Tank Used for Human Waste or Gray Water - DO NOT use for Fresh Water or Drinking Water
- MADE WITH Recycled Medium Density Polyethylene (MDPE) Resin SEAMLESS One-piece construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant MANUFACTURE PROCESS Tanks are made in a warehouse light scratching, scuffs, dust, and outlet glue may be present on tanks and does not affect performance of tank.
- WASTE TANK MEASUREMENTS: 34” Length (not including outlet pipe) x 16.50” Width x 11” Depth at largest point - Please view photos for more details and tank design
- INSTALLED OUTLET 3” ABS Female Pipe DO NOT over-tighten fittings damage will occur - Dump valve does not hook directly to the 3" ABS fitting. End user will install PVC or ABS piping to outlet, dump valve is hooked to the piping. Dump valve and piping NOT included. INLET & VENT INSTALLATION only comes with the outlet, the top of the tank is solid with no holes in it. End user will determine where the inlet and vent will need to be placed and install. Inlet and vent parts NOT included.
- MOUNTING & BRACING brace tank to prevent moving during transit. DO NOT place weight on tank. DO NOT hang by / mount with ratchet strap, this is too thin and will not adequately support tank OEM PART No retail box - no install instructions Have a certified technician install all parts to prevent product damage and personal injury
6. GET SERIOUS RV, Boat, Camper Chemical Toilet Holding Tank Treatment and Deodorizer. Works Faster Than Tablets or Packs in Grey and Black Water. Concentrated with Stress Relief Fragrance
8.2/10 our score
- AGGRESSIVELY DESTROYS ODORS rather than simply masking them. No more worries about bad odors just enjoy our pleasant fragrance! Our formula stays active and offers excellent residual benefits.
- LIQUID CULTURES WORK FASTER. Our GET SERIOUS RV BOAT TOILET TREATMENT is specifically formulated to help break down waste and eliminate odors from your holding tank. It’s the easiest way to keep your camper, boat, RV porta-potty bathroom and black water tank smelling clean and fresh
- SAFE FOR YOU, PLUMBING and septic systems. Does not contain the toxic, formaldehyde releasing ingredient bronopol Concentrated to save you money!
- DIGESTS SOLIDS: Immediately starts digesting solid waste and all brands of toilet paper. With regular use, over time, it will dissolve years of heavy sludge and smelly scum. Reverse years of neglect
- BILLIONS, YES BILLIONS of bio-renewal multi-strain cultures that will continually produce enzymes that break down and digest fats, greases, toilet papers keeping your system smelling fresh and running smoothly reducing the risk of solids forming.
7. Class A Customs 31 Gallon RV Waste Black Water Holding Tank WT-3100
8/10 our score
- 31 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3100
- Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
- MADE WITH Medium Density Polyethylene (MDPE) Resin
- SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
- TANK MEASUREMENTS 47.50” Length (not including pipe) x 24.50” Width x 8” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur
8. Class A Customs 27 Gallon RV Waste Black Water Holding Tank WT-2700
7.7/10 our score
- 27 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2700
- Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
- MADE WITH Medium Density Polyethylene (MDPE) Resin
- SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
- TANK MEASUREMENTS 35” Length (not including pipe) x 17” Width x 10” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur
9. Class A Customs 28 Gallon RV Waste Black Water Holding Tank WT-2800
7.4/10 our score
- 28 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2800
- Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
- MADE WITH Medium Density Polyethylene (MDPE) Resin
- SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
- TANK MEASUREMENTS 46” Length (not including pipe) x 22” Width x 8.5” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur
10. Class A Customs 38 Gallon RV Waste Black Water Holding Tank WT-3800
7.2/10 our score
- 38 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3800
- Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
- MADE WITH Medium Density Polyethylene (MDPE) Resin
- SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
- TANK MEASUREMENTS 56” Length (not including pipe) x 24.25” Width x 8.90” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur