Coming into contact with overflow can expose people to dangerous pathogens, they warned. The area is cordoned off.
Sanitary cloths, feminine care wipes, paper towels and baby wipes flushed down the toilet are wreaking havoc on sewer lines.
A massive blob of congealed food fat and wet wipes, known by Thames Water as a "fatberg" had to be removed the sewer pipes below the London suburb of Kingston.
If you live in Maryland, you'll likely see a hike in your sewer bills.