Did You

  • The cost of one bottle of water from a vending machine is equivalent to the cost of drinking 8 glasses of tap water every day for a year.
  • A gallon of water weighs 8.34 pounds.
  • The Water Authority maintains almost 1500 miles of drinking water pipes. If you put them end-to-end, they would stretch from Roanoke to Colorado Springs, CO.
  • At one drip per second, a faucet can leak 3,000 gallons of water per year.
  • Water is the only substance naturally found on earth as a solid, liquid and gas.
  • Over 713 gallons of water go into the production of one cotton T-shirt.
  • The Authority’s Water Pollution Control Plant is regarded as one of the best bird-watching areas in the mid-Atlantic region.
  • The Water Authority maintains over 6,000 fire hydrants in our service area. Fire hydrants are connected to the public drinking water distribution lines, so water from a fire hydrant is drinking water.
  • There are over 23,000 manholes in our service area.
  • Carvins Cove Natural Reserve is the second largest municipal park in the United States.
  • The Authority’s Water Pollution Control Plant covers over 100 acres of land.
  • More people in the world have a mobile phone than have a toilet.
  • The Water Authority treats 19-million gallons of drinking water a day although we have the capacity to treat 56-million gallons per day.
  • The Authority’s Water Pollution Control Plant treats almost 37-million gallons of wastewater a day from all across the Roanoke Valley.
  • There are 51 drinking water storage tanks in our service area. They each hold between 500,000 – 2-million gallons of water.
  • Most of the treated drinking water used in a home is for toilet flushing.

water drops



Local Limits

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Local Limits PDF

Any and all individual discharges to the public sewer shall NOT contain pollutants exceeding the following concentrations (as per Sec. 2.2, Discharge of heavy metals and toxic materials of the Western Virginia Water Authority Rules and Regulations, as amended):

Arsenic 0.18 mg/L
Benzene, Toluene, Ethyl benzene, and Xylene (B.T.E.X.) 5.0 mg/L
Cadmium 0.03 mg/L
Chromium, Total 1.95 mg/L
Chromium VI 0.06 mg/L
Copper 0.50 mg/L
Color due to Dyes and Inks 750 A.D.M.I.
Cyanide 0.06 mg/L
Dissolved Solids; Total Chlorides and Total Sulfates
500 mg/L
Fluoride other than that contained in the public water supply 12.0 mg/L
Lead 0.3 mg/L
Mercury 0.003 mg/L
Molybdenum 0.07 mg/L
Nickel 0.23 mg/L
Oil and Grease 200 mg/L
pH ≥ 5.0 or ≤ 12.5
Selenium 0.02 mg/L
Silver 0.32 mg/L
Temperature* > 104°F (40°C)
TPH 200 mg/L
Zinc 0.8 mg/L

*Sec. Section 2, General Sewer Use Requirements and 2.4 Local Limits of the Western Virginia Water Authority Rules and Regulations.