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.

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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. At WaterZen, we review these reports and make the information available, in a concise, straightforward, and easy-to-understand way.

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WaterZen Rating

Lead and copper levels in the drinking water of some cities across the United States are too high, potentially creating public-health issues for the people living in those areas.

What about Onslow Water and Sewer Authority (ONSAWA)? How much lead and copper are in your drinking water? And how do those levels compare to other cities in the state? We examined data from hundreds of cities across the nation to understand and grade your water quality.

Unfortunately, we are not able to analyze data from this water provider. This is because this water provider does not report using the standard method of amounts detected for the 90th percentile.

To take action to improve your water quality, check out our guides for the various water-testing and filtration options on the market: water pitchers, filtered water bottles, TDS meters, reverse-osmosis filters, under-sink filters, and whole-house water filters.

News & Resources

Not Available

WaterZen Rating

Lead and copper levels in the drinking water of some cities across the United States are too high, potentially creating public-health issues for the people living in those areas.

Unfortunately, we are not able to analyze data from this water provider. This is because this water provider does not report using the standard method of amounts detected for the 90th percentile.

In this report:

News & Resources

Contact Onslow Water and Sewer Authority Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
228 Georgetown Road
Jacksonville, 28540

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.)
910-455-0722

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 Jacksonville Cty 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, Jacksonville Cty has made it pretty simple with the following online form. Starting service generally takes just two business days.

Click here to fill out a Start Service Form.

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.

Click here to fill out a Stop Service Form.

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