Water & Sewer Utilities

All billing questions shall be directed to Water/Sewer Billing and Collections, located at:
475 Corporate Drive
Mahwah, NJ 07430
Phone: 201-529-5757 (ext. 221 or ext. 222)


  1. Who do I call for billing questions?
  2. What should I do if I have discolored water?
  3. What should I do if I see water coming out of the road/ground?
  4. What are Mahwah Water Department hours of normal operation?
  5. What should I do if I think my water/sewer bill is high?
  6. Does Mahwah have high lead levels in our drinking water?
  7. What should I do if I have sewage backing up into my home?
  8. What if the sewer clog is the homeowner’s responsibility?
  9. Is the Mahwah Sewer Department responsible for the sewer line coming into my home?
  10. Is the Mahwah Water Department responsible for the water line coming into my home?
  11. What is the Mahwah Water Department responsible for in my home?
  12. What should I do if I need the water shut off at the curb so I can make nonemergency repairs in my home?
  13. What should I do if I need the water shut off at the curb for an emergency?
  14. Is the Mahwah Sewer Department responsible for my sewer ejector pump?
  15. What should I do if I see BLUE and GREEN flags on my yard?