Oak Island

The Division of Water Resources (DWR) provides the data contained within this Local Water Supply Plan (LWSP) as a courtesy and service to our customers. DWR staff does not field verify data. Neither DWR, nor any other party involved in the preparation of this LWSP attests that the data is completely free of errors and omissions. Furthermore, data users are cautioned that LWSPs labeled PROVISIONAL have yet to be reviewed by DWR staff. Subsequent review may result in significant revision. Questions regarding the accuracy or limitations of usage of this data should be directed to the water system and/or DWR.

1. System Information

Contact Information

Complete

Water System Name: Oak Island   PWSID: 04-10-020
Mailing Address:4601 E. Oak Island Dr.
Oak Island, NC 28465		Ownership:Municipality
 
Contact Person:Tray BivinsTitle:Superintendent
Phone:910-619-1749Cell/Mobile:--
 
Secondary Contact:Scott Haas Phone:910-523-0437
Mailing Address:4601 E. Oak Island Dr.
Oak Island, NC 28465		Cell/Mobile:--
Distribution System
Line Type Size Range (Inches) Estimated % of lines
Asbestos Cement 4-14 95.00 %
Polyvinyl Chloride 2-6 5.00 %
What are the estimated total miles of distribution system lines?   120 Miles
How many feet of distribution lines were replaced during 2024?   0 Feet
How many feet of new water mains were added during 2024?   0 Feet
How many meters were replaced in 2024?   306
How old are the oldest meters in this system?   31 Year(s)
How many meters for outdoor water use, such as irrigation, are not billed for sewer services?   1,375
What is this system's finished water storage capacity?   1.1000 Million Gallons
Has water pressure been inadequate in any part of the system since last update? Line breaks that were repaired quickly should not be included.   No
Programs
Does this system have a program to work or flush hydrants?   Yes, Annually
Does this system have a valve exercise program?   Yes, Annually
Does this system have a cross-connection program?   Yes
Does this system have a program to replace meters?   No
Does this system have a plumbing retrofit program?   No
Does this system have an active water conservation public education program?   Yes
Does this system have a leak detection program?   Yes
Water Conservation
What type of rate structure is used?   Increasing Block
How much reclaimed water does this system use?   0.0000 MGD   For how many connections?   0
Does this system have an interconnection with another system capable of providing water in an emergency?   Yes

2. Water Use Information

Service Area
Sub-Basin(s)% of Service Population
Shallotte River (09-4)50 %
Cape Fear River (02-3)50 %
County(s)% of Service Population
Brunswick100 %
What was the year-round population served in 2024?   9,811
What was the seasonal population and months served in 2024? (if applicable)   35,000 ( Jun Jul Aug )
Has this system acquired another system since last report?   No

Uploaded map in 2018 it has not changed

Water Use by Type
Type of Use Metered
Connections		 Metered
Average Use (MGD)		 Non-Metered
Connections		 Non-Metered
Estimated Use (MGD)
Residential 11,750 1.1000 0 0.0000
Commercial 203 0.0568 0 0.0000
Industrial 0 0.0000 0 0.0000
Institutional 0 0.0000 0 0.0000

How much water was used for system processes (backwash, line cleaning, flushing, etc.)?   0.0900 MGD

Residential numbers higher / corrected after completing 2024 LCRI Inventory audit.
System process, town has 69 auto flush devices on dead end streets with adjustable timers for improved water quality

3. Water Supply Sources

Monthly Withdrawals & Purchases
Average Daily
Use (MGD)		 Max Day
Use (MGD)		 Average Daily
Use (MGD)		 Max Day
Use (MGD)		 Average Daily
Use (MGD)		 Max Day
Use (MGD)
Jan 0.7594 May 1.4549 Sep 1.4032
Feb 0.7431 Jun 1.9649 Oct 1.3098
Mar 0.8843 Jul 2.0739 Nov 1.1818
Apr 1.1392 Aug 1.6647 Dec 0.8344

Water Purchases From Other Systems
Seller PWSID Average
Daily Purchased
(MGD)		 Days
Used		 Contract Required to
comply with water
use restrictions?		 Pipe Size(s)
(Inches)		 Use
Type
MGD Expiration Recurring
Brunswick County 04-10-045 1.2894 365 3.0000 2061 Yes Yes 12,16 Regular

4. Wastewater Information

Monthly Discharges
Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)
Jan 0.6730 May 0.9030 Sep 1.2300
Feb 0.6870 Jun 1.0670 Oct 0.9520
Mar 0.7360 Jul 1.3900 Nov 0.8370
Apr 0.8300 Aug 1.2320 Dec 0.6940

How many sewer connections does this system have?   10,505
How many water service connections with septic systems does this system have?   276
Are there plans to build or expand wastewater treatment facilities in the next 10 years?   No

LCRI audit corrected number of connections

Wastewater Permits
Permit Number Type Permitted Capacity
(MGD)		 Design Capacity
(MGD)		 Average Annual
Daily Discharge
(MGD)		 Maximum Day Discharge
(MGD)		 Receiving Stream Receiving Basin
WQ0005790 WWTP 0.4000 0.4000 0.0000 0.0000 Non - Discharge Cape Fear River (02-3)
WQ0031857 WWTP 0.4000 0.4000 0.0000 0.0000 Non Discharge Cape Fear River (02-3)
Wastewater Interconnections
Water System PWSID Type Average Daily Amount Contract
Maximum (MGD)
MGD Days Used
Brunswick County 04-10-045 Discharging 0.9360 365 3.0000
Town Of Caswell Beach 04-10-055 Receiving 0.0755 365 0.2000

5. Planning

Projections
  2024 2030 2040 2050 2060 2070
Year-Round Population 9,811 11,709 12,909 13,109 14,309 15,509
Seasonal Population 35,000 35,000 35,000 35,000 35,000 35,000
 
Residential 1.1000 1.1900 1.2900 1.3900 1.4900 1.5900
Commercial 0.0568 0.1578 0.1588 0.1598 0.1608 0.1618
Industrial 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Institutional 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
System Process 0.0900 0.0920 0.0930 0.0940 0.0950 0.0960
Unaccounted-for 0.0391 0.0900 0.0940 0.0980 0.1020 0.1040
Demand v/s Percent of Supply
  2024 2030 2040 2050 2060 2070
Surface Water Supply 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Ground Water Supply 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Purchases 3.0000 3.0000 3.0000 3.0000 3.0000 3.0000
Future Supplies 0.0000 0.0000 0.0000 0.0000 0.0000
Total Available Supply (MGD) 3.0000 3.0000 3.0000 3.0000 3.0000 3.0000
Service Area Demand 1.2859 1.5298 1.6358 1.7418 1.8478 1.9518
Sales 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Future Sales 0.0000 0.0000 0.0000 0.0000 0.0000
Total Demand (MGD) 1.2859 1.5298 1.6358 1.7418 1.8478 1.9518
Demand as Percent of Supply 43% 51% 55% 58% 62% 65%

The purpose of the above chart is to show a general indication of how the long-term per capita water demand changes over time. The per capita water demand may actually be different than indicated due to seasonal populations and the accuracy of data submitted. Water systems that have calculated long-term per capita water demand based on a methodology that produces different results may submit their information in the notes field.

Your long-term water demand is 112 gallons per capita per day. What demand management practices do you plan to implement to reduce the per capita water demand (i.e. conduct regular water audits, implement a plumbing retrofit program, employ practices such as rainwater harvesting or reclaimed water)? If these practices are covered elsewhere in your plan, indicate where the practices are discussed here.    

Are there other demand management practices you will implement to reduce your future supply needs?   Customer information practices, yearly citizen workshops.

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs?   Brunswick county to supply all Town of oak island water needs.

How does the water system intend to implement the demand management and supply planning components above?   Town of oak island contract with Brunswick county to supply all water needs.

Additional Information

Has this system participated in regional water supply or water use planning?  No

What major water supply reports or studies were used for planning?  

Please describe any other needs or issues regarding your water supply sources, any water system deficiencies or needed improvements (storage, treatment, etc.) or your ability to meet present and future water needs. Include both quantity and quality considerations, as well as financial, technical, managerial, permitting, and compliance issues:   Town of Oak Island has contracted with WK Dixon for Water System Storage Tank Improvements Project

The Division of Water Resources (DWR) provides the data contained within this Local Water Supply Plan (LWSP) as a courtesy and service to our customers. DWR staff does not field verify data. Neither DWR, nor any other party involved in the preparation of this LWSP attests that the data is completely free of errors and omissions. Furthermore, data users are cautioned that LWSPs labeled PROVISIONAL have yet to be reviewed by DWR staff. Subsequent review may result in significant revision. Questions regarding the accuracy or limitations of usage of this data should be directed to the water system and/or DWR.