Questions & answers · Flood insurance
Sewage backed up into my basement. Does flood insurance pay for the sewer backup or sump pump overflow?
Flood insuranceDeniedChecked Nov 5, 2026
From K.Actuary, founded by Sangmin Kwon, ASA · sources checked 2026-11-05 · Source: FEMA · Standard Flood Insurance Policy, Dwelling Form (44 CFR Part 61, Appendix A(1)) · Art. V.D (Exclusions) item 5 View original ↗
In short
- The standard flood policy does not insure water that backs up through sewers or drains, or that overflows from a sump pump.
- The policy makes an exception when there is a flood in the area and the flood is the proximate cause.
- The sources do not say how a company decides whether your case fits the exception.
What this means
This answer is about the federal National Flood Insurance Program (NFIP) standard policy. In its list of things it does not insure, the policy includes water or water-borne material that backs up through sewers or drains, discharges or overflows from a sump or sump pump, or seeps or leaks on or through the insured property. The same item adds "unless there is a flood in the area and the flood is the proximate cause" of the backup, the overflow, or the seepage. If the company denies your claim, ask it in writing which words of the policy it used. The sources do not say what a homeowners policy pays for sewer backup; that depends on that policy.
Your next step
Ask your flood insurer in writing for the policy words behind its decision. If it denies the claim, see our answer about appealing a flood claim denial for the appeal steps.
Check it yourself
Open the policy text at the eCFR link and read Article V, paragraph D, item 5.
Where this comes from (1)
[1] FEMA · Standard Flood Insurance Policy, Dwelling Form (44 CFR Part 61, Appendix A(1)) · Art. V.D (Exclusions) item 5 · checked 2026-11-05
5 . Water or water-borne material that: a . Backs up through sewers or drains; b . Discharges or overflows from a sump, sump pump, or related equipment; or c . Seeps or leaks on or through the insured property; unless there is a flood in the area and the flood is the proximate cause of the sewer or drain backup, sump pump discharge or overflow, or the seepage of water;
How we found this
We matched your question to 1 official source, quoted the exact lines, and re-checked each quote against its source on 2026-11-05.
What we don’t know yet
Your own plan or notice may say something different. If your letter cites another rule, send it and we will look again.
Every answer is checked against the official rule it quotes.
Information only — not legal advice. Your plan, insurer or agency decides.
This answer quotes the official sources listed above, with the date we checked them. Your own policy, notice and state rules control. We are not your lawyer or your insurer. We don’t file, argue or negotiate claims for you — you send any letter or form yourself.
Related answers
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- The flood washed out my yard, trees, driveway, and septic tank. Does flood insurance pay for them?
- I paid my flood insurance renewal late. How long does the federal policy give me, and what if I never got the renewal notice?
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