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Sewage Pumps
Availability
Type
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$0
$2,140.90
5050CUSJ DuraMAC Sewage Pump 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CUSJ DuraMAC Sewage Pump 1/2 HP 120V Cast Iron
- Price
- From $511.85
5050CTSJPACSL DuraMAC Split Lid Sewage 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CTSJPACSL DuraMAC Split Lid Sewage 1/2 HP 120V Cast Iron
- Price
- $996.62
5050CTSJ15 DuraMAC High Volume Sewage Pump 1/2 HP 120V Cast Iron / SS
A.Y. McDonald
5050CTSJ15 DuraMAC High Volume Sewage Pump 1/2 HP 120V Cast Iron / SS
- Price
- From $787.46
5050CTSJPAC24 DuraMAC Sewage Package 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CTSJPAC24 DuraMAC Sewage Package 1/2 HP 120V Cast Iron
- Price
- $1,503.55
5050CTSJPACDA1 DuraMAC Sewage Package 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CTSJPACDA1 DuraMAC Sewage Package 1/2 HP 120V Cast Iron
- Price
- $1,233.48
5050CTSJPACSDA DuraMAC Sewage Package 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CTSJPACSDA DuraMAC Sewage Package 1/2 HP 120V Cast Iron
- Price
- $1,640.74
5050CTSJPAC DuraMAC Sewage Package 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CTSJPAC DuraMAC Sewage Package 1/2 HP 120V Cast Iron
- Price
- $879.12
5050CTSJ DuraMAC Sewage Pump 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CTSJ DuraMAC Sewage Pump 1/2 HP 120V Cast Iron
- Price
- From $546.30
Sewage Pumps
Description
Authorized Baker · Goulds · Authorized Xylem Dealer
Sewage Pumps
2" Solids ·
Below-Grade Bathrooms
Move sewage from below-grade bathrooms, basement plumbing, and ejector pits to the main line. The complete Baker DuraMAC sewage pump lineup — ½ HP through 2 HP, cast iron with stainless steel vortex impellers, 2" solids handling. Plus pre-built simplex packages with alarms and Xylem Goulds commercial sewage by quote.
½ – 2 HP
Power Range
80–140 GPM
Flow Range
2"
Solids Handling
Same Day
Houston Stock
Brands We Carry
Sewage Pumps from Trusted Manufacturers
Baker DuraMAC is our flagship sewage pump line — proven cast iron construction with stainless steel vortex impellers and 2" solids handling. Xylem (Goulds Water Technology) commercial and industrial sewage available by quote for higher-flow and continuous-duty applications.
Find Your Match
Pick Your Application
Sewage pumps are sized to fixture count, vertical lift, and discharge run length. Match your situation below — then call us at 281.664.8000 for a free system sizing.
🚽 Below-Grade Bathroom
Basement bathroom, in-law suite, or addition where the toilet is below the sewer main. ½ HP simplex with alarm = standard solution.
→ Baker 5050CTSJ + simplex package
🏠 Whole-House Below Grade
Multiple fixtures below the sewer or septic — full bathroom, laundry, kitchen waste. Higher flow capacity required.
→ Baker 5050CTSJ15 / 5050CTSJH25 high volume
🏥 Commercial / Multi-Unit
Restaurants, multi-unit residential, healthcare, schools. Continuous duty, redundancy, and code compliance required.
→ Goulds WS series quote · or Baker 1-2 HP
🏗️ Septic Lift Station
Pumping septic effluent uphill to leach field, or from one tank to another. Continuous-duty rated, alarm system standard.
→ Baker 5050CTSJPAC / PACSDA package
🚨 Replacement / Spec
Existing sewage pump failed? We cross-reference any brand to a current model — same flow, same solids handling, drop-in replacement.
→ Send model number · we do the lookup
⚡ Pressure Sewer
Need to grind solids before pumping (toilets, paper, sanitary products). Sewage pump alone won't grind — see grinder pumps.
→ See Grinder Pumps collection
Education
Sewage Pump vs Sewage Ejector vs Grinder
Three different submersible pumps serve three different wastewater applications. Pick the wrong one and either sewage will back up or solids will clog the pump within hours of install.
Sewage
2" Solids · Below-Grade Bathroom
Most Common
▸
Solids handling: Up to 2" — passes typical toilet waste without grinding
▸
Use: Below-grade bathrooms, basement plumbing, basin pumping to sewer/septic
▸
Discharge: 2" NPT minimum (smaller will clog)
▸
Baker series: 5050C series — CTSJ, CVSJ, CUSJ + 25' cord variants
Effluent
¾" Solids · Septic / Greywater
Septic Only
▸
Solids handling: ¾" — for water that has already passed through a septic tank or filter
▸
Use: Septic tank pump-out to leach field, greywater pumping, dewatering
▸
NEVER pump raw sewage with an effluent pump — too small for solids, will clog
▸
Baker series: 5033/5040/5050 EF series — see Effluent Pumps
Grinder
Cuts & Pressurizes
Pressure Sewer
▸
How it works: Cutter assembly grinds solids before discharge — 24,000 cuts/sec
▸
Use: Pressure sewer systems, long-distance discharge, uphill against high TDH
▸
Discharge: 1¼" (small line because solids are ground)
▸
Baker series: 110911GRP, 110912GRP, 120912GRP — see Grinder Pumps
⚠ Discharge Pipe Sizing Is Code-Mandated
Most plumbing codes (IPC and UPC) require 2" minimum discharge for sewage pumps in residential applications. Smaller discharge lines clog within months — solids drop out of suspension, accumulate, and block the line. The Baker 5050C sewage pumps all use 2" NPT discharge by design. Don't reduce to 1½" "to save on pipe" — it will fail and cost 10x to fix.
Best Seller · ½ HP Cast Iron
Baker 5050C Series — ½ HP Sewage Pumps
The flagship Baker sewage pump line. Cast iron construction, stainless steel non-clogging vortex impeller, ½ HP thermally-protected split capacitor motor, 2" NPT discharge, 2" solids handling, and lifts up to 25 ft of vertical height. Available in three switch configurations and standard or 25' cord lengths.
5050C Series Models
| Model | HP | Switch Type | Cord | Best For |
|---|---|---|---|---|
| 5050CTSJ | ½ HP | Tethered float | 10' | Standard residential install |
| 5050CTSJ25 | ½ HP | Tethered float | 25' | Long install runs to control panel |
| 5050CVSJ | ½ HP | Vertical float | 10' | Tighter basins, narrow ejector pits |
| 5050CUSJ | ½ HP | None (utility) | 10' | External controls, alarm panels, duplex |
All 5050C series: 120V 60Hz 1Ø, 7.6 amps, cast iron body, stainless steel vortex impeller, 2" NPT discharge, 2" solids handling, 3450 RPM. Performance: 80 GPM at 0 ft lift, 68 GPM at 5 ft, 60 GPM at 10 ft, 44 GPM at 15 ft, 13 GPM at 20 ft, 2 GPM at 25 ft.
5050C Series Engineering Features
①
Cast Iron Body & Volute
Heavy-duty cast iron resists corrosion in sewage service and dissipates motor heat for continuous duty.
②
Stainless Steel Vortex Impeller
Non-clogging cast SS vortex design creates a swirling flow pattern that passes 2" solids without contacting the impeller blades.
③
Thermally Protected Motor
Split capacitor motor with built-in thermal overload — protects against pump-down lockup and over-temperature failure.
④
Three Switch Configurations
Tethered (CTSJ) for wider basins, vertical (CVSJ) for tight pits, no-switch (CUSJ) for external alarm/duplex panels.
⑤
2" NPT Discharge
Code-compliant 2" minimum discharge for residential sewage. Pairs with standard 2" PVC discharge piping.
5050C Specifications
HP½ HP
Voltage120V 60Hz 1Ø
Amps7.6
Discharge2" NPT
Solids Handling2" ✓
ConstructionCast Iron
ImpellerSS Vortex (non-clogging)
RPM3450
Max Flow @ 0 ft80 GPM
Max Lift25 ft
DutyContinuous, thermal protected ✓
High Volume · 140 GPM Peak Flow
5050CTSJ15 · 5050CVSJ15 · 5050CTSJH25
When the application demands more flow than the standard 5050C series — multi-bathroom installs, restaurants, commercial below-grade plumbing, septic lift stations — Baker offers high-volume variants delivering up to 140 GPM at low head.
The high-volume 5050C variants use the same ½ HP cast iron platform with a re-engineered impeller for higher flow at lower head. Performance: 140 GPM at 0 ft, 123 GPM at 5 ft, 97 GPM at 10 ft, 72 GPM at 15 ft, 49 GPM at 20 ft, 25 GPM at 25 ft, 3 GPM at 30 ft.
HP: ½ HPMax Flow: 140 GPMMax Lift: 30 ftSolids: 2"Body: Cast Iron
5050CTSJ15 vs 5050CTSJH25 — What's the Difference?
The "15" variants (5050CTSJ15, 5050CVSJ15) ship with a 15' cord for moderate-distance installs. The "H25" (5050CTSJH25) is the high head/high volume variant — re-engineered for both higher flow AND higher lift than standard, with a 25' cord. When the discharge runs farther OR higher than typical residential, choose H25.
Pre-Assembled · Drop-In Ready
5050CTSJPAC — Simplex Sewage Packages
Code-compliant sewage installations require alarm systems, properly sized basins, and tight access lids. Baker pre-built simplex packages bundle everything for a single PO and faster install.
5050CTSJPAC — Standard Simplex
Standard simplex sewage system: 18"×30" sewage basin + 5050CTSJ pump + check valve + sealed lid + alarm system. Drop-in for new installs or full system replacement.
→ Standard residential
5050CTSJPAC24 — 24×24 Basin
Larger 24"×24" basin variant for higher capacity or where local code requires bigger storage volume. Same ½ HP pump with 24" basin.
→ High-capacity / code-driven
5050CTSJPACSDA — NEMA 3R Alarm
Outdoor-rated NEMA 3R alarm package for exterior or basement installs requiring weather-tight alarm enclosure. Pre-wired sounder and visual alarm.
→ Outdoor / NEMA 3R required
5050CTSJPACDA1 — NEMA 1 Tank Alarm
Indoor NEMA 1 alarm package for standard interior basement installs. Pre-wired alarm, easier install than separate alarm systems.
→ Standard interior
5050CTSJPACSL — Split Lid Package
Simplex with split-lid basin for maintenance access without removing the entire lid. Useful where overhead clearance is limited.
→ Limited clearance
Custom Duplex Configurations
For redundant duplex installs (lead/lag pumps with alternation), we configure custom packages using two 5050CUSJ pumps + duplex control panel + alarm.
→ Custom · contact us
Available · Quote Only · Authorized Xylem Dealer
Goulds & Flygt — Commercial & Industrial Sewage
When the application exceeds residential — commercial restaurants, multi-unit residential, hotels, healthcare, lift stations, municipal treatment plants — we bring in Xylem's commercial and industrial sewage portfolio.
Goulds WS Series
Commercial submersible sewage and effluent pumps. ½ HP through 7½ HP. Cast iron, stainless steel options. Up to 6" solids handling on larger models.
→ Commercial sewage
Goulds 3SE Submersible Sewage
Compact cast iron submersible for residential through light commercial. ½ HP through 1½ HP. 2" solids, 2" discharge.
→ Premium residential
Flygt — Heavy Industrial
Xylem's premier industrial wastewater pump line. Used in municipal lift stations, treatment plants, and industrial process. Adaptive non-clog impeller technology.
→ Lift stations · municipal
Goulds 4 / 6 / 8 SUB Series
Larger submersibles for commercial sewage with 3", 4", and 6" solids handling. For applications where 2" passing isn't enough.
→ Large solids handling
When to Quote Xylem vs Stock Baker
Choose Baker DuraMAC for residential applications, replacement on existing Baker installs, and same-day shipping. Choose Goulds or Flygt when: (1) spec calls for "Goulds or equal" or "Flygt or equal"; (2) commercial duty > 50 cycles/day; (3) solids handling beyond 2"; (4) three-phase power required; (5) hospital/restaurant/multi-unit where downtime is unacceptable. Email sales@watermainsupply.com with specs and we quote same business day.
Technical Reference
Sewage Pump Sizing Guide
Three numbers needed: peak fixture flow demand, total dynamic head, and required code compliance. Get these right and the pump selection is straightforward.
Step 1 — Calculate Required Flow (GPM)
| Application | Typical GPM | Recommended Pump |
|---|---|---|
| Single basement bathroom (toilet + sink) | 20–30 GPM peak | 5050CTSJ / 5050CVSJ |
| Full basement bath + laundry | 30–50 GPM peak | 5050CTSJ — adequate |
| Multi-bath whole-house below grade | 50–80 GPM peak | 5050CTSJ15 high volume |
| Restaurant / commercial kitchen | 80–140 GPM peak | 5050CTSJH25 or Goulds WS |
| Multi-unit residential lift | 140+ GPM | Goulds WS series quote |
| Septic lift to leach field | 10–30 GPM continuous | 5050CTSJPAC simplex package |
Step 2 — Calculate Total Dynamic Head (TDH)
TDH = Vertical Lift + Friction Losses + Discharge Backpressure
Vertical lift: pump → highest discharge point2" PVC friction ≈ 1 ft per 100 ftEach 90° elbow ≈ 5 ft equivalentCheck valve ≈ 5 ft equivalentAlways check pump's GPM at YOUR TDH on the curve
Step 3 — Code Compliance Check
2" Discharge Minimum
IPC and UPC codes require 2" minimum discharge for sewage pumps. Smaller lines clog. The 5050C series is built for 2" — don't reduce.
→ Required by code
Alarm System Required
Most jurisdictions require a high-water alarm on sewage pump systems. Pre-built packages (PAC, PACSDA, PACDA1) include alarms.
→ Required by code
Sealed Lid Required
Sewage basin lids must be gas-tight to prevent sewer gas migration. Use code-approved sealed lids only.
→ Required by code
Vent Required
Sewage basin must be vented to outside per local code. Vent terminates above roof line, away from windows.
→ Required by code
Service & Replacement
Sewage Pump Parts & Accessories
When a sewage pump fails, your basement bathroom is offline. Same-day shipping on Baker DuraMAC sewage replacement parts and accessories.
Float Switches
Tethered, vertical, and wide-angle float switches. Match by model — switch failure is the #1 cause of sewage pump non-starts.
→ Most common failure
Check Valves (2" Sewage)
2" full-port check valves rated for sewage service. Critical for preventing back-flow into basin between cycles.
→ Anti-backflow
Alarm Panels
High-water alarms, NEMA 1 indoor, NEMA 3R outdoor. Replacement alarm modules and audible/visual alarm components.
→ Code-required
Sewage Basins
18"×30" and 24"×24" sewage basins, sealed lids, basin extensions for added depth. Vent fittings and inlet hub seals.
→ Basin replacement
SS Vortex Impellers
Stainless steel vortex impeller replacements for 5050C series. Replace if pump runs but flow is low (impeller wear or damage).
→ Performance restoration
Mechanical Seals
Carbon-ceramic mechanical seal kits for 5050C series. Replace at first sign of oil discoloration or motor leak.
→ Wear replacement
Technical FAQ
Common Questions
What's the difference between a sump pump and a sewage pump?
Sump pumps handle clean water (groundwater, rainwater) — solids handling typically ⅛" to ½", discharge usually 1¼"–1½". Sewage pumps handle blackwater containing toilet waste, paper, and other solids — solids handling 2" minimum, discharge 2" minimum required by code. Don't substitute one for the other — a sump pump used for sewage will clog within hours.
Why does my sewage pump need 2" discharge when my house drains are only 1½"?
Code (IPC/UPC) mandates 2" minimum on sewage pump discharge specifically because the pump is moving solids upward at velocity. Gravity drains can use 1½" because solids fall freely; pumped lines need larger diameter to maintain transport velocity and prevent clogging. The 5050C series is designed around 2" discharge — don't reduce it to match your existing branch lines, run a separate 2" discharge to where it ties into the gravity main.
Do I need an alarm on a residential sewage pump?
Yes — most plumbing codes require a high-water alarm on any sewage pump system. The alarm warns you that water has risen above the pump's high-level mark, indicating a pump or float failure. Without an alarm, the first sign of a problem is sewage backing up into the bathroom. The Baker simplex packages (PAC, PACSDA, PACDA1) include code-compliant alarms. If retrofitting, add an alarm panel separately — they're cheap and required.
Tethered or vertical float switch on sewage pump — which is better?
Same logic as sump: tethered gives wider on/off range and fewer cycles, requires basin diameter ≥ 18" for free swing. Vertical fits tight basins, narrower range, more cycles. For sewage pumps in 18"×30" or 24"×24" basins, both work — tethered is preferred for fewer motor cycles. For 18" round basins or tight pits, vertical is the right choice.
My sewage pump runs but doesn't push water out. What's wrong?
Three causes: (1) Air-locked impeller — turn pump off, pour water into basin, restart. If air pocket clears, install a small relief hole in the discharge pipe near the pump. (2) Worn or broken impeller — replace impeller assembly. (3) Discharge pipe clogged — most often from improper waste (rags, sanitary products, grease). Clear discharge line and educate users on what NOT to flush.
Can I run a sewage pump on the same circuit as another appliance?
No — code requires sewage pumps on a dedicated circuit (typically 15A or 20A 120V). Sharing a circuit with other appliances risks the pump losing power when it's needed most (during peak load) and creates code violations. Always run the sewage pump on its own breaker, separate from washing machines, refrigerators, or other heavy loads. The alarm panel can share or have its own circuit per local code.
How often should sewage pumps be serviced?
Test the pump and alarm annually — pour 3-5 gallons of water into the basin, watch the pump start, watch it cycle off cleanly, then trigger the alarm by manually raising the high-level float. Inspect the basin for sludge buildup every 2-3 years. Replace the float switch at first sign of erratic behavior. Clean the discharge pipe trap (if equipped) annually. A well-maintained sewage pump lasts 7-10 years.
What's the difference between simplex and duplex sewage systems?
Simplex = single pump. Pump fails → system down. Standard for residential. Duplex = two pumps with alternating control. Lead pump runs first; if water level keeps rising (or lead fails), lag pump takes over. Both pumps share duty over time via alternation control panel. Duplex is required for many commercial applications, multi-unit residential, healthcare, and any application where pump failure = code violation or property damage. Cost is roughly 2x but reliability is dramatically higher.
Are Baker sewage pumps NSF/code compliant?
Yes — Baker DuraMAC sewage pumps are built to UL standards and meet IPC and UPC plumbing code requirements for residential sewage service. Their cast iron construction and SS impeller are corrosion-rated for sewage applications. The pre-built packages include code-compliant alarms, sealed lids, and proper venting hardware. For commercial installations, your engineer/inspector may specify a Goulds or Flygt model for additional compliance certifications.
How long does a sewage pump last?
Properly-sized cast iron sewage pump in residential service typically lasts 7–10 years. Premature failures (under 5 years) almost always trace to: (1) oversizing causing short-cycling; (2) improper waste (grease, rags, sanitary products) damaging the impeller; (3) failed float switch causing lockup; (4) running on a shared/undersized circuit. Maintain properly and you'll get 10+ years.
Can a sewage pump pump uphill to a sewer line above the basement?
Yes — that's exactly what they're built for. The 5050C series lifts up to 25 ft of vertical height, more than enough for typical basement-to-main-line discharge. The high-volume 5050CTSJH25 lifts up to 30 ft. Calculate Total Dynamic Head (vertical lift + friction losses) and verify on the pump curve that you'll get adequate flow at that head. For lifts beyond 25-30 ft, consider grinder pumps which build higher head.
Are you an authorized Baker dealer?
Yes — Watermain Supply (DBA of E4 Industrial LLC) is an authorized Baker Water Systems dealer, plus authorized for A.Y. McDonald, Davey, and Xylem (Goulds Water Technology, Lowara & Flygt). All products ship factory-direct or from Houston stock with full manufacturer warranty.
Need a Sewage Pump or Package Sized?
Free sizing with every quote. Same-day shipping on Baker DuraMAC sewage pumps and simplex packages from Houston stock.
sales@watermainsupply.com
281.664.8000Free Sizing & Technical Support
sales@watermainsupply.comSame-Day Quote Response
Authorized DealerBaker · A.Y. McDonald · Davey · Xylem
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