Onslow Water and Sewer Authority
The Onslow Water and Sewer Authority (ONWASA), a public, nonprofit water and sewer authority, provides water for about 126,761 residents living in the Jacksonville, Onslow County Area. Established in 2005, the Onslow Water and Sewer Authority collects water from groundwater sources. ONWASA has 14 wells located throughout the county, which draw from the Black Creek Aquifer. The water provided by the treatment plants in Hubert and Dixon draw water from 22 wells in the Castle Hayne Aquifer.
Jacksonville City Drinking Water Quality
Consumer Confidence Water Quality Reports
Under the authority of the Safe Drinking Water Act, the EPA requires Onslow Water and Sewer Authority to assess local water quality each year and distribute a Consumer Confidence Water Quality Report.
The information in this report includes the source of your water, whether your water meets EPA standards, detailed tables of detected contaminants, detailed descriptions of those contaminants, possible reasons why they're present, and potential health effects (if any).
Read the Consumer Confidence Report for Jacksonville City main water system here:
Contact Onslow Water and Sewer Authority Customer Service
Have a Question, Issue or Comment?
Main Customer Service
910-455-0722 (Mon–Fri, 8:00 AM–5:00 PM)
No email provided. Please visit the contact form. https://www.onwasa.com/FormCenter/ONWASA-Forms-2/Contact-Us-35
Emergency (24 hours - broken water main or pipeline, etc.)
Pay Your Onslow Water and Sewer Authority (ONSAWA) Bill
Already have an account?
If you already have an account, you just need to login to the Onslow Water and Sewer Authority (ONSAWA) site. Onslow Water and Sewer Authority (ONSAWA) accepts credit cards, debit, and direct deposit. Click here to login.
Want to create a new account?
You can create a new account on the Onslow Water and Sewer Authority (ONSAWA) website. Once you create the account, you can setup payment with credit, debit, or direct deposit. Click here to create an account.
Want to pay without an account?
You can make a one-time payment without creating an account. You will need to have your credit or debit card in order to make the one time payment. Click here to make a one time payment.
How to Start Water Service
Starting Your Service
When you move to a new home in Jacksonville City, you'll most likely already have running water, but you'll still need to set up water service with the Onslow Water and Sewer Authority (ONSAWA). Luckily, has made it pretty simple with the following online form. Starting service generally takes just two business days.
Stopping Your Service
When you move out of a home in Jacksonville City, you'll need to stop your water service with the Onslow Water and Sewer Authority (ONSAWA), so you don't keep getting billed. Simply fill out the following online form. Stopping service normally takes just two business days.