Contact UsCustomer Service:
888.237.1333 or fill out our Customer Service Feedback Form. Please allow up to one business day for a response.
TDD # (800-300-6202)
Hours of Operation: Monday through Friday, 7 a.m. to 7 p.m.
In case of EMERGENCY, contact us 24 hours a day, 7 days a week, 365 days a year.
Hawaii American Water Main offices:
For help with My H2O Online, please call 1.888.237.1333.
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