https://solaridtoilet.com/insights daily 0.75 2026-04-17 https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/7997945e-1553-4510-99b8-d5d92512bc23/The+Big+Necessity.jpg Insights https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/ca573d54-b623-49bd-8126-0707d1543143/Pipe+Dreams.jpg Insights https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/5cf16d9e-4eec-430a-aa9f-867acff00421/Waste.jpg Insights https://solaridtoilet.com/insights/preparing-our-reference-black-water-holding-tank monthly 0.5 2026-04-17 https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/034e0488-a01a-46b5-b340-7744ac696a68/250gallon_HoldingTank_cropped_resized.png Insights - Preparing our Reference Black-Water Holding Tank - The Tank Based off of the factors listed above, we chose the PolyJohn 250 gallon holding tank. While it isn’t optimally shaped with height being the largest dimensions, we’ve noticed that it fits most install sites the best. https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/77457fa6-853e-4c7d-a690-0c082d0b845c/2026-03-12_tank+coupler+straightened_no+background-sm.png Insights - Preparing our Reference Black-Water Holding Tank - Inlet for the Solarid Toilet From the edge of the tank that has a capped 3” pipe stubbed up in the corner (this will become our vent), cut a 6” hole in the middle, as close to the wall as possible. Screw down the coupler that allows a 6” sewer pipe to connect to this opening. Note: the coupler in this picture is custom made by us. If you are sourcing and preparing your own tank and need this, we can include it as part of the purchase of the Solarid Toilet system. https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/be171b68-a05a-4cee-ae4d-a535635a744e/Poop+Slide.JPG Insights - Preparing our Reference Black-Water Holding Tank - Waste Slide Screw a 4” x 14” piece of HDPE (or other smooth/slippery material) about halfway down from the opening. Why? Because the tank isn’t too high, and liquid is minimal, we want to help disperse solid waste and toilet paper, preventing a pyramid or pile directly underneath the inlet. https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/04d379a4-9fef-454b-839b-1553f732778e/2026-04-03_vent_combined.JPG Insights - Preparing our Reference Black-Water Holding Tank - Vent In the corner next to the Solarid Toilet inlet, use a 2-3/4” hole saw to create an opening in the 3” stubbed pipe. A coupler is used to connect a 3” PVC pipe for venting. The vent pipe should go up at least 10’, or above the roof line. https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/a77cc9ca-9fe3-4727-9bfe-b346e0192465/Holding+Tank+Vent+collage.jpg Insights - Preparing our Reference Black-Water Holding Tank - Venting Options The amount of venting and evaporation from the tank depends on the amount of liquid expected. If just the Solarid Toilet is being connected, where the only liquid is urine, then the end of the vent pipe can be either passively covered, or have a wind turbine connected to it. The hole in the center of the tank should also be capped. If the bathroom sink or other water sources will also enter the tank, such that it is beneficial to have some of it evaporate, then: add a powered fan to the vent (a 12VDC powered fan that connects inline with the 3” pipe can be purchased from us) and replace the capped hole in the center of the tank with a screen-covered elbow. https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/5e5258ed-f72c-461c-b445-d8508d184ab1/2026-04-03_clean-out.JPG Insights - Preparing our Reference Black-Water Holding Tank - Clean-out We need an outlet on the other side of the tank to provide access for a pump truck. On the opposite side of the tank from the inlet, make an opening with a 4” hole saw and glue in a 4” clean-out and cap. https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/cd0e50dc-6c6b-4c8a-8d2b-af4729b7c958/Waste+Tank+Hose+Nozzle+-+collage.jpg Insights - Preparing our Reference Black-Water Holding Tank - Hose Connector For all installation where the tank’s height is smaller than its other two dimensions, a hose connection should be added near the inlet. This will help when the tank gets pumped out by breaking up the toilet paper pile and moving it to the other end of the tank. The parts that make us this connection — from the bottom up — are a jet nozzle, a bulkhead connection (3/4” male hose connector to 3/4” female NPT), an NPT to hose connector adapter, and a screw-on cap. Ideally, the bulkhead connection would have a 3/4” female hose connection instead of NPT threads so that the adapter wouldn’t be necessary, but I can’t find this part. https://solaridtoilet.com/insights/52x0rteowlnqgqegqvxw1nsltkm7zd monthly 0.5 2026-04-08 https://solaridtoilet.com/insights/aj7uin0e5x64964vmbo4pbv6j9htvz monthly 0.5 2026-03-11 https://solaridtoilet.com/insights/solaridtoiletdebutatkbis monthly 0.5 2026-03-11 https://solaridtoilet.com/insights/world-toilet-day-2025-sanitation-in-a-changing-world monthly 0.5 2025-12-03 https://solaridtoilet.com/insights/how-can-toilets-help-to-alleviate-drought-in-major-cities monthly 0.5 2025-11-04 https://solaridtoilet.com/insights/the-fascinating-truth-of-converting-human-waste-into-fertilizer monthly 0.5 2025-11-04 https://solaridtoilet.com/home daily 1.0 2026-04-01 https://images.squarespace-cdn.com/content/v1/6883a8e0401a2f57fa9f3539/253ac31e-2299-4025-ae98-34b1e10b0048/Solarid+Toilet+in+Home+Bathroom.jpg 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Toilet Standard - IMG_0502.jpeg https://solaridtoilet.com/solaridtoiletprojects daily 0.75 2025-09-02 https://solaridtoilet.com/solaridtoiletprojects/project-six-sz8wl-l9ezf monthly 0.5 2022-05-24 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847422112-G7ETRT5C07KF9PHFAV96/20140301_Trade-151_0124-copy.jpg Pilot Projects - Project Six https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847421455-8JW2CPL3ZB56F2Z8ACLN/20140301_Trade-151_0124-copy.jpg Pilot Projects - Project Six https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847420762-AGPM8HHB51L8F01AAZN7/20140301_Trade-151_0124-copy.jpg Pilot Projects - Project Six https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847420322-U8QPDYBOD6HXYRSL8QW0/20140301_Trade-151_0124-copy.jpg Pilot Projects - Project Six https://solaridtoilet.com/solaridtoiletprojects/project-five-jkmzy-a57wd monthly 0.5 2022-05-24 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Project Five https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847416982-R2067X6OPKY3MG304FSJ/20140301_Trade-151_0124-copy.jpg Pilot Projects - Project Five https://solaridtoilet.com/solaridtoiletprojects/project-four-yjynj-ky9wd monthly 0.5 2022-05-24 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847905386-9EM9GLHE12726EXM68S4/image-asset.jpeg https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847906050-Q37PFW075QZ6YU9179YP/image-asset.jpeg https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847907929-YZFF0BD112Q9PF2G1BK6/image-asset.jpeg https://solaridtoilet.com/solaridtoiletprojects/project-three-8zgh7-8wanw monthly 0.5 2025-10-01 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847412609-54WSVSAFRMKZEQTXDKB9/20140301_Trade-151_0124-copy.jpg Pilot Projects - Burlington, Vermont Pilot 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Florida Pilot https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847402884-2RBITFZTNVLDS1AJEKXW/20140301_Trade-151_0124-copy.jpg Pilot Projects - Jupiter Farms, Florida Pilot https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847402453-A0LKCHP0YA7NLI2E0WJA/20140301_Trade-151_0124-copy.jpg Pilot Projects - Jupiter Farms, Florida Pilot https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847402040-WALQWA4IM1JBBHBJZ731/20140301_Trade-151_0124-copy.jpg Pilot Projects - Jupiter Farms, Florida Pilot