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Model # SEP-500

Internet # 100173104

1/2 HP Submersible Sewage Pump

This item has been discontinued.
The Home Depot no longer carries this specific product.

$239.00 /each




Model # SEP-500

Internet # 100173104

The RIDGID 1/2 HP Submersible Sewage Pump features a 115-Volt motor for high output and thermoplastic pump housing and volute to help prevent corrosion and rust. This sewage pump is suitable for residential applications and pumps up to 8,600 GPH. The pump self-primes after the housing is initially filled with water and can be installed in sewage basins 18 in. or larger.

California residents: see  Proposition 65 information

  • 1/2 HP; max. flow rate is 7800 GPH; 6420 GPH at 10 ft. of discharge lift
  • Combination 2 in. / 3 in. NPT discharge capable of handling up to 2 in. solids
  • Thermoplastic pump housing and volute help prevent corrosion and rust
  • Pump self primes after the housing is initially filled wit
  • Installs in sewage basins 18 in. or larger
  • Bottom-suction design helps to efficiently remove water
  • Uses combination 2 in./3 in. NPT discharge

Info & Guides

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Product Depth (in.) 
12 in 
Product Height (in.) 
17 in 
Product Width (in.) 
Amperage (amps) 
Bottom/End Suction 
Cord Length (ft.) 
Discharge Flow @ 0 ft. (gallons/hour) 
Discharge Flow @ 10 ft. (gallons/hour) 
Hardware Required 
Horsepower (hp) 
1/2 hp 
Housing Material 
Maximum Working Temperature (F) 
Minimum working temperature (F) 
Outlet Connection 
Threaded female 
Power Type Required 
Product Weight (lb.) 
26 lb 
Pump Switch Type 
Solids Handling 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 
Manufacturer Warranty 
3 Year 


Rated 3.2 out of 5 by 21 reviewers.
Rated 5.0 out of 5.0 by Very dependable pump I've had this pump for just about 8 years. Very dependable pump. The pump gets quite a workout. Not only rain water from the house tile, but also a finished basement with dual head shower, sink and toilet all feeding into the sump pit. This 1/2 HP pump empties the pit in just seconds. Would replace with another Rigid sewage pump in a heartbeat. September 19, 2015
Rated 1.0 out of 5.0 by DO NOT BUY THIS PUMP IT'S JUNK I paid $200 for this pump 4 years ago and it has already failed. Pump motor is seized. Warranty is for only 3 years. This is the second time my basement has flooded with sewage because of these cheap Rigid pump failures. I've learned my lesson. Purchased top of the line Flotec pump. Much better constructed cast iron pump and better warranty - 5 years. I wouldn't wish this nasty job on anyone and hope to never have to go through it ever again. December 7, 2011
Rated 4.0 out of 5.0 by Pump Replacing a under a year old pump from compeditor . This one cycles more completely and less often. Double cord design requires lid modifcation for gas seal. Best warranty offered anywhere... April 12, 2007
Rated 1.0 out of 5.0 by Lifetime Warranty excludes "wear and tear" after only a few years. We paid extra ($319 on 9/12/2010) for this because of the "Lifetime Warranty." We never expected that just four years later it would fail completely, and the company would leave us out in the cold. I will never buy a RIDGID product again, nor will my six adult kids, and we'll swear them off for the grandkids too when they come along. A company that won't stand by its warranty needs to be avoided. Period. Time to head to a real plumbing supply house for a reliable brand. October 21, 2014
Rated 1.0 out of 5.0 by Pump seized up I only had this pump for 4 years and it no longer works.This pump only has a 3 year warranty. Paying over $200.00 I would think it should last longer. I'm now going with a different brand that has a lifetime warranty for only a few more dollars. Don't waste your money on this pump. July 13, 2014
Rated 1.0 out of 5.0 by Crapped out after 18 months Crapped out after 18 months". This pump is not worth it's weight to what it supposed to pump. It literally stopped working after 18 months pumping effluent fluid. I am going to see if I can return it to get fixed and have it as a back up when then the new pump fails in the future. April 19, 2012
Rated 5.0 out of 5.0 by 1/2 HP submersible sewage pump Time will tell on the quality of this pump. If it last at least 5 years as other brands have I will be pleased. Can not submit a photo of the pump as it is at the bottom of a overflow septic tank. June 9, 2015
Rated 5.0 out of 5.0 by Just a regular guy I do not know about sump pumps, sure I am handy around the house but I am no expert. Six years ago I walked into my local Home Depot and purchased this pump. Why this pump, it came down to the size and the cost. I have a washing machine and a shower in the basement and this pump has worked without incident for the past six years. I am very happy with the purchase. March 22, 2013
  • 2015-11-23 T10:29:35.250-06:00
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