Where does the sump pump send its Discharge Water?
Sump pumps, which we discuss on this page, are designed to remove unwanted water, such as surface or ground water that leak into a building. But the sump pump system will be ineffective if the water it discharges is routed where the same water simply leaks back into the building. The sump pump installation may also be improper or even illegal in some communities if it discharges into the sewer system.
In this photo at left a temporary sump pump discharge line has been left on the basement floor - no good destination has been assigned to sump outlet hose.
If this sump pump is called-on to operate in this condition the building will simply be flooded.
Sump pumps that have been added to an older structure often pump their discharge to the ground surface where it runs to a storm drain or area drainage setting.
If you have such a system be sure that the sump pump discharge empties where it meets these criteria:
The water leaving the sump pump should be discharged to a location where it does not flow back towards the building. Otherwise it may simply cycle the same water endlessly, possibly even undermining the building foundation
Water discharge from a sump pump must go to a legal destination. In the photo at left we're emptying the sump pump via a small diameter (Limited flow capacity) to a local storm drain.
This might be legal and fine in the summer for an unusual event, but this is not a reliable, permanent sump pump installation.
As this system was found in Maine, we can expect it to freeze or simply not work in winter or early spring when it may be most needed.
Discharging onto a neighbor, and in some communities, discharging into local storm drains, may be prohibited and are certainly a bad practice.
In freezing climates, the sump discharge needs to be protected from freezing or the system may not work when most needed. A long sump discharge line outside, especially one with minimal pitch or slope, is likely to freeze up in cold weather.
We've inspected homes where the sump pump was running continuously but not moving any water because its discharge line was blocked by ice. This condition permits water to rise in and even flood a building.
Continue reading at SUMP PUMP INSPECTION or select a topic from the More Reading links or topic ARTICLE INDEX shown below.
Try the search box below or CONTACT US by email if you cannot find the answer you need at InspectApedia.
Ask a Question or Search InspectApedia
Questions & answers or comments about sump pump discharge piping
Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. Tel: (416) 964-9415 1-800-268-7070 Email: email@example.com. The firm provides professional home inspection services & home inspection education & publications. Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Thanks to Alan Carson and Bob Dunlop, for permission for InspectAPedia to use text excerpts from The Home Reference Book & illustrations from The Illustrated Home. Carson Dunlop Associates' provides extensive home inspection education and report writing material.
The Illustrated Home illustrates construction details and building components, a reference for owners & inspectors. Special Offer: For a 5% discount on any number of copies of the Illustrated Home purchased as a single order Enter INSPECTAILL in the order payment page "Promo/Redemption" space.
TECHNICAL REFERENCE GUIDE to manufacturer's model and serial number information for heating and cooling equipment, useful for determining the age of heating boilers, furnaces, water heaters is provided by Carson Dunlop, Associates, Toronto - Carson Dunlop Weldon & Associates Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on any number of copies of the Technical Reference Guide purchased as a single order. Just enter INSPECTATRG in the order payment page "Promo/Redemption" space.
The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume.
Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on these courses: Enter INSPECTAHITP in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
The Horizon Software System manages business operations,scheduling, & inspection report writing using Carson Dunlop's knowledge base & color images. The Horizon system runs on always-available cloud-based software for office computers, laptops, tablets, iPad, Android, & other smartphones
Support InspectApedia.com & See Fewer Advertisements
From Google's Contributor website: Contribute a few dollars each month. See fewer ads. The money you contribute helps fund the sites you visit.