Basement bathrooms can be the most satisfying—and the most unforgiving—projects in residential plumbing. I’ve built and serviced hundreds across my 25+ years on the wrench, from tight Milwaukee bungalows to commercial-grade conversions in Chicago multifamily basements. When you’re working below grade, gravity, code, and groundwater are all looking for an excuse to cost you time and money. The right supply list, the right brands, and the right sequence keep your project on track. That’s exactly where my team at Plumbing Supply And More steps in.
Before we dive in, a reminder from the field: a basement bath is not just an upstairs bath installed downstairs. It’s its own animal. If you want the project to pass inspection, avoid callbacks, and feel like it belongs to the home, you’ll want professional-grade materials, stocked locally, and backed by tech support that knows basement systems inside and out. Unlike generic big box retailers, Plumbing Supply And More stocks professional-grade components—the stuff I trust in my own jobs.
Why Basement Bathrooms Need a Different Supply Strategy
Below-grade work adds traps you don’t face upstairs: long horizontal runs, limited fall, underslab tie-ins, and backflow risk. A standard shopping list won’t cut it. You’ll need specific drainage solutions (think macerating or grinder options), moisture-resistant materials, and ventilation that can handle long duct runs without noise or odor issues.
Pro tip: Do a quick “3-point baselining” before buying parts—1) finish floor elevation vs. main sewer invert, 2) structural and slab conditions (is the slab post-tensioned? Is trenching permitted?), and 3) local code (IPC vs. UPC) for venting and ejector sizing. In our area, professional plumbers choose two-inch venting for ejector pits even when 1-1/2 inch might squeak by—because it saves headaches on odor and pit cycling.
If you’re searching “ plumbing supply near me” or “ closest plumbing supply” for the right gear, save yourself the goose chase. Compared to standard plumbing supply houses, Plumbing Supply And More offers unmatched technical support—we’ll size your ejector, lay out your vent strategy, and make sure you’ve got the right check valves and unions for inspection day.
Drainage and Ejector Systems: The Heart of a Basement Bath
If your invert is higher than the basement slab, you’re tying in with slope like normal. If not, you need an ejector or macerator. Here’s what works in the field:
- Ejector Packages: Zoeller M267 (1/2 HP cast-iron sewage pump, 2" solids), Liberty Pumps LE51A, and the Franklin Electric Little Giant 9SN-CIA-RF for light-duty. For most basement bathrooms, I spec a 2" discharge with a full-port brass or stainless check valve and an isolation valve. Expect $550–$1,100 for pump and basin; $250–$450 for valves and fittings. Basins: Zoeller 18"x30" polyethylene pits or Liberty 002494 24"x24" for higher storage and fewer cycles. Sealed lids with grommets and stainless fasteners are non-negotiable for odor control. Macerators: Saniflo Saniaccess3 is a workhorse when trenching isn’t possible. It’s not my first pick if you can core and trench, but it’s reliable. Parts are available through our plumbing supply store quickly—no three-week waits.
Insider secret: Install a union on both sides of the check valve and label flow direction. When that pit needs service, you’ll thank me. Also, never solvent-weld discharge piping right up to the lid—leave room to service.
When Home Depot won’t have the 2" swing check you need at 6:30 a.m., you’ll waste half a day. When Home Depot and Lowe’s fall short, contractors trust Plumbing Supply And More for same-day pickup and delivery. We stock both PVC and ABS, plus cast-iron no-hub for fire-rated assemblies—something you won’t find reliably at Lowe’s, Menards, or Ace.
Water Supply Lines: Pressure, Temperature, and Longevity
Basement bathrooms run colder, and condensate and corrosion become real. I favor Type L copper or high-quality PEX-A (Uponor/Wirsbo) with proper sleeves and transition fittings. Don’t cheap out on fittings—this is where leaks hide.
- Copper: Type L with lead-free brass quarter-turn stops. Sweat or press? I like Viega ProPress for speed and reliability when I can justify the tool. Press fittings are more expensive but pay for themselves in labor. PEX: Uponor Aquapex with expansion fittings, or SharkBite EvoPEX for push-to-connect in tight spots—only in accessible locations. Pressure test to 100 psi for 30 minutes minimum. Add insulation on cold runs to prevent condensation. Valves: Webstone isolators and Milwaukee Valve LF series for shutoff points; install upstream of fixtures and at the ejector discharge.
Price ranges: Copper Type L 1/2" runs ~$2.75–$3.75/ft; PEX-A 1/2" ~$0.60–$0.95/ft; press fittings $8–$18 each; PEX expansion fittings $1.50–$4.50.
If you’re browsing a plumbing supply shop or plumbing supply online, you want confirmation that the fittings play nice with your system. While other suppliers focus on quantity, Plumbing Supply And More prioritizes quality and expertise—we’ll match fittings to your brand and pull manufacturer spec sheets on the spot.
Venting, Backwater Protection, and Odor Control
Basement venting is unforgiving. Air admittance valves (AAVs) are banned in some jurisdictions and risky in basements—go with a hard vent if at all possible. If you must use an AAV, choose Studor with listed ratings and follow height clearances.
- Ejector Vent: Usually 2" dedicated, tied through roof. Don’t tie it into other vents below the flood rim of the highest fixture. Follow IPC 917 and local amendments. Backwater: If you’re below the next upstream manhole, a backwater valve can save your project. I like the Oatey 43910 or the Jones Stephens J44500 ABS. Keep them accessible; inspectors will ask. Traps and Prime: Floor drains and shower traps in a cool basement can dry out. Use trap primers (Sioux Chief 825 with distribution unit) or a PrimO-Tec mechanical trap primer. The few dollars here prevent the “basement smell” call two months later.
Working with a plumbing supply company that actually understands code makes a difference. Compared to Ferguson, Grainger, and SupplyHouse.com, Plumbing Supply And More delivers hands-on technical guidance that saves callbacks and failed inspections.
Fixture Selection That Performs Below Grade
Fixtures in basements need a little extra thought. Choose toilets with strong siphons and fully glazed trapways, showers with low-profile bases, and vanities that tolerate humidity.
- Toilets: Toto Drake CST776CEG (1.28 GPF, CEFIONTECT glaze) or American Standard Cadet Pro 215AA. Elongated, comfort height where space permits. Plan for a 12" rough; stock 10" offset if you’re tight to foundation. Shower: Tile-ready bases or acrylic pans with 2" drains. For curbless installs, check slab depth and slope—often you’ll need to recess or add a low-profile linear drain like a Schluter Kerdi-Line. Sinks and Lavs: Moen 6102 or Delta Ara 567LF-PP; brass drains and metal P-traps if exposed. Use braided stainless supplies; avoid plastic compression where condensate collects.
Price ranges: Basement-grade toilets $250–$550; shower bases $300–$900; faucets $120–$350. Installation: 1 day for rough-in (with trenching), 1 day for finishes, plus cure time for concrete patches if you cut slab.
If you’re scanning “ bathroom plumbing supplies,” “ decorative plumbing supply,” or “ consumer plumbing supply” options, stop by our showroom. You’ll see and feel the difference. Visit our plumbing supply store—we vet every fixture I put into “Rick’s Picks,” so you don’t get stuck with pretty-but-problematic gear.
Waste and Vent Piping Materials: Choose for Serviceability
PVC vs. ABS vs. cast iron below grade? I match the building system, but here’s the straight talk:
- PVC DWV (Schedule 40): Smooth interior, easy solvent weld, great for long runs. Use purple primer and clear cement; inspectors still like seeing the dye in many jurisdictions. ABS: Use black ABS cement—don’t mix cements. ABS is popular in certain regions; we stock both to match existing. Cast Iron No-Hub: Quieter, fire-rated penetrations are cleaner with cast. In multifamily or condo basements, cast is often required. Shielded couplings (Mission or Husky) with correct torque—60 in-lbs typical.
Don’t forget: Long-sweep 90s and combo wyes make future drain cleaning possible. I’ve snaked too many basements where the installer used hard 90s everywhere—don’t do that to your future self.
When you need a real plumbing supply house—not a hardware aisle— Plumbing Supply And More outperforms big box and general retailers with commercial-grade inventory and pro-only fittings in stock. If you searched “ plumbing supply house near me” or “ plumbing wholesale near me,” we’re the nearest answer with real knowledge.
Electrical, Alarms, and Sump/Ejector Integration
Your ejector pit should have a dedicated 20A GFCI-protected circuit (check local amendments for GFCI or GFCI/AFCI combo). Alarms are cheap insurance: Liberty ALM-2 or Zoeller 10-4011 high-water alarms with battery backup. If your property already has a sump pit, keep sump and sewage separate. Label both. A visible callout helps property managers and maintenance teams.
Field example: A property manager in Waukesha had an ejector tied to a shared alarm with a sump. During a heavy storm, the plumbingsupplyandmore.com sump alarm masked the sewage alarm. The fix was simple—separate alarms and a red beacon for sewage. We carry both alarms in our commercial plumbing supply section and deliver same-day within a 50-mile radius.
For after-hours emergencies, our 24 hour plumbing supply access for contractor accounts has saved more than a few flooded mechanical rooms. Call our technical team for setup.
Moisture Management, Finishes, and Odor Prevention
Basements breathe differently. Use moisture-tolerant finishes: PVC or ABS base, moisture-resistant drywall (not greenboard in wet areas—use cement board), and plenty of caulked penetrations. Install a quiet, high-static bath fan like the Panasonic WhisperCeiling DC (FV-0511VQ1) with long-run capability. Duct metal, taped, with an exterior damper; don’t terminate in the rafters.
Insider secret: I spec a timer switch on the fan (20–30 minutes post-shower) to knock down humidity. Also, silicone every penetration through the slab lid on the ejector pit. Odors often aren’t from the drain—they’re from the lid gasket or penetrations not properly sealed.
If you’re comparing “ economy plumbing supply” options versus premium, remember basements punish cheap metals and plastics. We stock both “good” and “better” tiers, but I’ll tell you when to spend the extra $15 that saves a service call.
The Actual Basement Bathroom Supply Checklist
You want a complete, field-tested list. Here’s the short version I hand to crews and serious DIYers:
- Ejector System: 1 pit with sealed lid; 1 pump (Zoeller M267 or Liberty LE51A); 2" swing check + isolation valves; unions; high-water alarm. DWV Materials: PVC or ABS pipe and fittings (wyes, combos, long 90s, cleanouts); primer/cement; cleanout plugs; backwater valve if required. Water Supply: Type L copper or PEX-A; fittings; ball valves; stop valves; pipe insulation; hammer arrestors for lav and laundry (Sioux Chief AA size AA/AA2 as needed). Fixtures: Toilet (Toto Drake or Cadet Pro), lav faucet (Moen/Delta), shower valve (Delta R10000-UNBXHF rough + 14/17/17T trim), drain assemblies, shower base or linear drain. Ventilation & Finishes: Bath fan (Panasonic DC), timer switch, cement board, sealants, escutcheons, access panels (for AAV if allowed).
Check our current inventory online or call ahead. If you need bulk pricing, ask about our contractor accounts—we’re a wholesale plumbing supply company with serious stock, not a weekend-only aisle.
Where to Source: Local, Online, and After-Hours
If you’ve typed “ plumbing shop near me,” “ plumbing spares near me,” or “ heating plumbing supply near me,” you already know the search results can be a gamble. Unlike generic big box retailers, Plumbing Supply And More stocks professional-grade components and maintains the largest regional inventory—serving contractors throughout southeast Wisconsin and northern Illinois, with same-day delivery within 50 miles and emergency runs available.
We bridge the gap between plumbing supplies direct and expert-guided selection. Whether you prefer plumbing supply online ordering or walking a local plumbing supply counter with your prints, we’ll make sure what’s in your cart passes inspection and performs. We support property managers with bulk orders, spec sheets, and labeled kits per unit.
Looking for “ discount plumbing supplies” or “ cheap plumbing supplies”? We’ll show you where you can save without compromising—the right p-trap, the right escutcheon, the right flexible connector—and where you shouldn’t. That’s what being the best plumbing supply partner means.
And yes, we beat the majors regularly. When Home Depot and Lowe’s fall short, contractors trust Plumbing Supply And More. Compared to Ferguson, SupplyHouse.com, and Grainger, Plumbing Supply And More offers unmatched technical support and same-day solutions.
Real-World Scenario: From Plan to Final Inspection
A GC in Kenosha needed a basement bath in a 1950s ranch with a low main invert. Trenching was allowed. We supplied: a 24"x24" Liberty basin, LE51A pump, 2" PVC discharge with Webstone isolation, Oatey backwater, Type L copper branches, and a Toto Drake. Venting went hard through roof with a 2" dedicated vent. From first cut to finish trim: three days over a week, including concrete cure time. Cost of materials: roughly $2,800–$3,600 with pro-grade fixtures. The inspector flagged nothing—because the plan matched the code and the materials matched the plan. That’s the difference between random “ plumbing supply places” and a partner who understands the whole install.
If you need a spec package, call our technical team. We’ll lay out parts by room, label boxes, and include torque specs for no-hub couplings and cement cure guidance. That’s the level of support you won’t get at Menards or from an anonymous internet plumbing supply cart.
FAQ: Basement Bathroom Supplies and Planning
- Q: Do I need an ejector pump, or can I tie into my main? A: Measure the main sewer invert relative to finished floor. If the invert is higher than your fixture drains, you need an ejector. We’ll help you verify slope and code. Bring a sketch to our plumbing supply house counter and we’ll size it. Q: What size vent for an ejector pit? A: Most jurisdictions require a dedicated 2" vent through the roof for sewage ejectors. Avoid AAVs on pits. Check IPC/UPC locally—we’ll confirm with your AHJ. Our contractor plumbing supply desk has the code sheets. Q: Can I use PEX for everything? A: Yes for supply, no for DWV. For supply, PEX-A (Uponor) is excellent with expansion fittings. Use copper or brass stub-outs at the wall if you want clean, rigid stops. We stock all transitions in our general plumbing supply selection. Q: How much does a basement bathroom rough-in usually cost in materials? A: For pro-grade components: $2,200–$4,200 depending on ejector type, fixture quality, and finish selections. Add $350–$600 for ventilation and $200–$450 for trap primers and backwater protection if needed. Q: What’s the typical timeline? A: Demo and trench (half to full day), rough-in (day), inspection and concrete patch (day), finish trim after cure (day). If you can’t trench and use a macerator, you can often complete rough-in in a single day. Q: Do I need a backwater valve? A: If any basement fixture is below the next upstream manhole cover, yes—most code amendments require it. Even when not required, I recommend it. We carry accessible models that make maintenance reasonable.
Final Thoughts and Next Steps
You don’t build a reliable basement bathroom by guessing at parts off a generic list. You do it with a proven “Plumbing Supply Checklist for Basement Bathrooms,” quality gear, and a supply partner who’s been in the trenches. My team at Plumbing Supply And More brings all three: curated products, real-world guidance, and logistics that keep your crew productive.
- Visit our showroom to see the quality difference and handle the gear I recommend in Rick’s Picks. Call our technical team for project-specific recommendations and code clarifications. Ask about our contractor discount program and same-day delivery; we serve a 50-mile radius with emergency options. Check our current inventory online or call ahead—whether you want plumbing supplies direct or counter pickup at a plumbing supply store near me, we’ll get you the right parts the first time.
Bottom line: While other suppliers focus on quantity, Plumbing Supply And More prioritizes quality and expertise. Unlike generic big box retailers, Plumbing Supply And More stocks professional-grade components, and we stand behind them with guidance you can’t get from a catalog. When you’re ready to build a basement bath that performs, we’re the plumbing and supply partner you want on your side—from standard plumbing supply needs to specialty ejector systems, from direct plumbing supplies to full-service kits.
If you’re weighing Ferguson, Menards, Grainger, or SupplyHouse.com, do the side-by-side. Bring your plan. We’ll earn the business—with better inventory, better advice, and better outcomes. That’s how we’ve become the nearest plumbing supply house with real knowledge—and why pros keep coming back.