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Alexandria Provides Info About Drainage Issues From Recent Heavy Rains | News Release | City of Alexandria


June 2015 was the second-wettest month on record for Alexandria. Multiple storms produced rainfall faster than storm drains could handle flow, resulting in some ground flooding and sewer backups. The City of Alexandria has worked to resolve issues as soon as possible when they involve City infrastructure. However, many issues on private property are simply the result of too much rain. The City urges residents to take necessary precautions to prevent flooding and sewer backups when possible. 

If untreated sewage discharges from the sanitary sewer system, report it immediately by calling 703.746.HELP (4357). Remember to avoid contact with overflow discharges, and keep people and pets away.

Drainage Problems

Drainage problems may include roadway or structural flooding, clogged or failing underground pipes and culverts, stream bank erosion and stormwater pollution affecting a stream.

Help prevent drainage problems by ensure that gutters and downspouts are clear of debris, sump pumps are working properly, grading slopes away from homes and buildings, and outdoor driveway and stairwell drains are free of debris and possible blockages.

If rainwater is draining from an adjacent property, call 703.746.HELP (4357) and a City inspector will investigate.

Sewer Backup

Sewer backups can be caused by pipe failures; blockages (e.g. grease, rocks, sticks, toys); excessive flows that exceed system capacity (typically due to significant rainfall); damage by contractors; power or mechanical failures at sewer pump stations; and settlement or movement of the soil adjacent to the pipe.

To prevent a sewage backup during a storm: 1) Install a backflow preventer and ensure that it is in working order and closed as necessary; 2) Stuff a rag, softball or other material into floor drains to stop the flow into basements; 3) Cover floor drains with mats and weigh them down; 4) Place a heavy object on the closed cover of basement toilets; 5) Restrict the use of plumbing as much as possible until rains subside, including dish and clothes washers, showers and toilets.

Wear waterproof boots and gloves to prevent exposure to contaminated water. After the rain stops, if sewage has come through a floor or plumbing drain, open the drain to allow as much water to drain out as possible. Use buckets, a sump pump or other means to remove as much of the contaminated water as possible.

If the backup occurs only when facilities (such as toilet, tub, washer or sinks) are used, it is possible that you need a plumber. If you have sewage backing up when you are not using any of your facilities, it is possible that there is a problem with the City’s main line.

If the City line is operating normally, indications are that your private building sewer lateral is the cause of the sewer backup, and you will be advised to contact a plumber. Residents and businesses are responsible for backups caused in private sewer lines, and for the installation, maintenance and inspection of backwater valves. Check your insurance policy to determine if damages related to sewage backups or water damages are covered. This type of coverage may be an optional coverage and can generally be added to a policy if requested. The cost for this optional coverage is inexpensive, and it is advised that property owners with below grade fixtures investigate this coverage.  

For media inquiries, contact Andrea Blackford, Senior Communications Officer, at andrea.blackford@alexandriava.gov, or 703.746.3959.

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