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How to Read Your Water Bill

When you receive your quarterly WSSC water and sewer bill, it's easy to spot the amount due. But what about all the other numbers that appear on your bill? Here's a quick primer on how to make sense of the readings, charges, and fees using a typical bill for a home with four residents.

1) Average Daily Consumption (ADC)

The ADC is an average, so whether you're 8 months or 88 years old, the average daily per person consumption is 70 gallons - or 280 gallons for a family of four. This sample bill reflects 469 gallons, which indicates there may be a leak somewhere in the home's plumbing. Pay attention to the ADC on each bill, incremental increases could be a sign of leakage, especially in toilet tanks.

2) Meter Readings

If your bill indicates "estimate", contact the Call Center (301-206-4001) to have WSSC obtain an actual meter reading. Estimated billing only occurs when your meter cannot be read due to severe weather, an inoperable remote reader, or an inaccessible meter.

Maryland State law requires WSSC to obtain an actual meter reading at least once every six months. When charges are estimated, unnoticed plumbing leaks could remain undetected, resulting in wasted water and increased charges.

3) Water and Sewer Use Charges

As noted on the bill pictured here, the billing period overlapped with the July 1, 2012 rate increase. The water and sewer use charges for the old and new rates are shown. The old and new water sewer charges are all measured per 1,000 gallons of use.


4) Bay Restoration Fee

Effective July 1, 2012, the Bay Restoration Fund Fee will be calculated based on the number of days in the billing period. The "flush" tax fee generates revenue to fund improvements to wastewater treatment plants throughout the state. State law requires WSSC to collect the fee on behalf of the state of Maryland. WSSC offers a Bay Restoration Fee Financial Hardship Exemption Program for customers who can demonstrate that paying the monthly "flush tax" fee creates a financial hardship. To learn more about the program visit Bay Restoration Fund page where you can access an online exemption application. Or you may call 301-206-4001 to have a form mailed to you.


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