Article updated: 04/2026
We at Portsmouth Atlantic Insurance are committed to making sure New Hampshire homeowners have the protection they need against the many risks to their homes. If you’re reviewing your overall policy, our New Hampshire home insurance guide explains the broader coverage decisions homeowners should understand.
One risk that is often overlooked until it’s too late is the risk of water damage from backups and sump pump failures. Our licensed insurance agents are here to walk you through this comprehensive guide to water backup coverage — why it’s so important for New Hampshire homeowners, and how you can get this valuable protection.
Coverage for Water Backup: What You Should Know
Sometimes water backup coverage is referred to as a sewer backup endorsement or sump pump overflow endorsement.
It’s an optional add-on to your homeowners insurance policy, which can help fill important protection gaps that standard home coverage may not fully address.
This coverage helps pay for water damage to your home from a variety of sources such as clogged drains, overloaded sewer systems or failing sump pumps.
Water Backup Insurance Coverage
Water backup insurance usually covers a range of damages and costs resulting from water backup events:
- Damage to your property from clogged drains, broken sump pumps, or sewer backup, including scenarios similar to basement flooding events homeowners often ask about.
- Costs associated with water damage cleanup.
- Repair damaged floors, walls, furniture and electrical systems.
- Replacement of lost personal items.
- Mold Damage From Water Or Sewage Back-up
Exclusions to bear in mind
Coverage for water backup is a great protection, but it does have limitations. For broader rising-water risks, separate flood insurance may be necessary. Some common exceptions include:
- Backup of a defective plumbing system or poor maintenance.
- Fixing broken sump pumps.
- Slow damage over time by lack of maintenance.
The Price of Protection
Water backup coverage will cost you depending on several factors , including the amount of coverage and the risk to the property . Premiums are generally $50 to $250 a year. Our licensed insurance agents can help you choose the right coverage limits based on your unique needs and the value of your property.
Why You Need Water Backup Coverage as a New Hampshire Homeowner
In New Hampshire, homeowners are also at risk of water backup situations caused by major weather events, aging infrastructure, and underground service line issues many homeowners overlook.
Water damage is one of the most common and costly claims made by homeowners insurance policyholders in the state and water backup coverage is a vital way to safeguard your home, your belongings and your finances.
How to Obtain Water Backup Coverage
Portsmouth Atlantic Insurance makes it easy to add water backup to your homeowners insurance policy. Our licensed insurance agents will help explain coverage options and help you select the right limits for your specific needs. Don’t wait for disaster to happen. Get water backup coverage for your home today.
Full Coverage Atlantic Insurance of Portsmouth
Water backup coverage is an important way to protect your New Hampshire home from the unexpected. At Portsmouth Atlantic Insurance our licensed insurance agents are here to help you have peace of mind knowing that your home and property are well protected.
If you’d like to review your current protection, request a personalized home insurance policy review with our licensed team. Let us help you protect your New Hampshire home and have peace of mind for years to come.
FAQs
1. Does homeowners insurance cover water backup from a sump pump failure?
Direct answer: Standard homeowners insurance usually does not cover water damage caused by sump pump failure unless you add water backup coverage. This optional endorsement helps cover cleanup, repairs, and damaged belongings when water backs up into your home due to sump pump overflow or failure.
2. What is the difference between water backup coverage and flood insurance?
Direct answer: Water backup coverage and flood insurance protect against different risks. Water backup coverage applies when water enters your home from internal drainage systems, sewer lines, or sump pump failures. Flood insurance covers rising groundwater or external flooding, which standard homeowners insurance typically excludes.
3. Is water backup coverage worth it for New Hampshire homeowners?
Direct answer: For many New Hampshire homeowners, yes. Heavy rain, snowmelt, aging sewer infrastructure, and sump pump failures can all create costly water damage. Because cleanup, flooring replacement, and mold remediation can become expensive quickly, this coverage often fills an important gap in a standard homeowners policy.
4. How much water backup coverage should I add to my homeowners insurance?
Direct answer: The right amount depends on your home’s layout, finished basement value, personal belongings, and potential cleanup costs. Homes with finished lower levels, expensive flooring, or mechanical systems in basements often need higher limits than the minimum endorsement amount offered by some insurers.
5. Does water backup coverage pay for replacing a broken sump pump?
Direct answer: Usually no. Water backup coverage generally pays for damage caused by the water event, not for repairing or replacing the sump pump itself. Mechanical failure of the equipment is commonly considered a maintenance or equipment issue rather than a covered property loss.
6. Can water backup coverage help with mold damage after a sewer backup?
Direct answer: Sometimes, depending on the policy language and how quickly the damage is addressed. If mold develops as a direct result of a covered water backup claim, limited coverage may apply. Delayed maintenance or long-term moisture problems are commonly excluded.
7. Myth vs Fact: If my basement floods, my homeowners insurance automatically covers it.
Direct answer: Myth. Basement water damage is not automatically covered just because it occurs inside the home. Coverage depends on the source of the water. Sewer backups, sump pump failures, and groundwater flooding are treated differently, and some causes require separate endorsements or entirely separate policies.
8. Myth vs Fact: Water backup coverage is only necessary for older homes.
Direct answer: Myth. Even newer homes can experience sump pump failures, clogged drain lines, municipal sewer overload, or unexpected plumbing backups. Age can increase risk, but newer construction does not eliminate the possibility of significant water damage from backup-related events.
9. What causes sewer or water backup in New Hampshire homes?
Direct answer: Common causes include heavy rain, rapid snowmelt, frozen or clogged pipes, overwhelmed municipal sewer systems, sump pump failure, and aging drainage infrastructure. Seasonal weather patterns in New Hampshire can increase the likelihood of water backup events, especially in lower-level living spaces.
10. Can I add water backup coverage at any time?
Direct answer: In many cases, yes. Water backup coverage can often be added during a policy review, renewal, or mid-term endorsement request, depending on the insurer. Reviewing this coverage before a problem occurs is important, since insurance generally does not cover damage from known or existing issues.