Welcome to Harris County Water Works Online Bill Pay Service. You must include your CUSTOMER NUMBER before you submit your payment. All bills paid on line will be assessed a $3.00 non-refundable convenience charge at time of submission of payment. Payments are credited the same day received. If paid after the due date, 10% of the balance due will be charged to your account as a late penalty.

Your Customer Number
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Billing Information
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Payment Information
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Please check the box below and follow the instructions given: