ONWASA

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

Provisional

Water System Name:	ONWASA		PWSID:	04-67-035
Mailing Address:	228 Georgetown Road Jacksonville, NC 28540		Ownership:	Authority

Contact Person:	Seth Brown		Title:	Deputy Chief Operations Officer
Phone:	910-937-7520		Cell/Mobile:	--

Secondary Contact:	Matthew Padgett			Phone:	910-937-7529
Mailing Address:	228 Georgetown Rd. Jacksonville, NC 28540	Cell/Mobile:		--

Distribution System

Line Type	Size Range (Inches)	Estimated % of lines
Asbestos Cement	4-6	1.00 %
Ductile Iron	4-24	10.00 %
Galvanized Iron	2	2.00 %
Polyvinyl Chloride	2-18	87.00 %

What are the estimated total miles of distribution system lines? 1,257 Miles

How many feet of distribution lines were replaced during 2025? 0 Feet

How many feet of new water mains were added during 2025? 63,360 Feet

How many meters were replaced in 2025? 2,667

How old are the oldest meters in this system? 20 Year(s)

How many meters for outdoor water use, such as irrigation, are not billed for sewer services? 0

What is this system's finished water storage capacity? 16.2000 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. Yes

Programs

Does this system have a program to work or flush hydrants? Yes, Annually

Does this system have a valve exercise program? Yes, 2 Years or More

Does this system have a cross-connection program? Yes

Does this system have a program to replace meters? Yes

Does this system have a plumbing retrofit program? Yes

Does this system have an active water conservation public education program? Yes

Does this system have a leak detection program? No

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
New River (02-6)	64 %
White Oak River (17-1)	34 %
Northeast Cape Fear River (02-5)	2 %

County(s)	% of Service Population
Onslow	100 %

What was the year-round population served in 2025? 164,608

Has this system acquired another system since last report? No

Water Use by Type

Type of Use	Metered Connections	Metered Average Use (MGD)
Residential	58,263	7.4080
Commercial	1,885	0.5780
Industrial	50	0.0260
Institutional	12	0.0780

How much water was used for system processes (backwash, line cleaning, flushing, etc.)? 0.5770 MGD

Water Sales

Purchaser	PWSID	Average Daily Sold (MGD)	Days Used	Contract			Required to comply with water use restrictions?	Pipe Size(s) (Inches)	Use Type
Purchaser	PWSID	Average Daily Sold (MGD)	Days Used	MGD	Expiration	Recurring	Required to comply with water use restrictions?	Pipe Size(s) (Inches)	Use Type
City of Jacksonville	04-67-010	0.0790	365			No	No	6-10	Regular
Pender County Utilities	70-71-011	0.0090	365	0.0600	2029	Yes	No	6	Regular
Scientific Water and Sewer	04-67-222	0.0060	365			Yes	Yes	6	Regular
Scientific Water and Sewer	04-67-223	0.0000	0			Yes	Yes	6	Emergency
Scientific Water And Sewer	04-67-224	0.0090	365			Yes	Yes	6	Regular
Scientific Water And Sewer	04-67-221	0.0000	0	0.0000		Yes	Yes	6	Emergency
Scientific Water And Sewer	04-67-228	0.0000	0			Yes	Yes	6	Emergency
USMC Camp Lejeune	04-67-556	0.0200	365			Yes	Yes	8	Regular
USMC Camp Lejeune (Rifle Range)	04-67-046	0.2780	365	0.5900	2060	Yes	Yes	8	Regular

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	10.8079	13.4736	May	12.3352	14.5339	Sep	12.2927	14.6722
Feb	10.5277	12.8681	Jun	12.3342	15.0529	Oct	10.3706	12.5024
Mar	10.7161	12.2801	Jul	13.0826	14.6852	Nov	11.4926	19.0800
Apr	11.6277	13.4527	Aug	12.0541	14.2391	Dec	11.1278	13.0010

Ground Water Sources

Name or Number	Average Daily Withdrawal (MGD)		Max Day Withdrawal (MGD)	12-Hour Supply (MGD)	CUA Reduction	Year Offline	Use Type
Name or Number	MGD	Days Used	Max Day Withdrawal (MGD)	12-Hour Supply (MGD)	CUA Reduction	Year Offline	Use Type
1	0.5011	328	1.1590	0.4680	CUA25		Regular
10	0.2237	173	0.7210	0.4680	CUA25		Regular
11	0.2986	175	0.9870	0.4680	CUA25		Regular
12	0.3813	307	0.9820	0.4680	CUA25		Regular
13	0.2134	330	0.4910	0.2980	CUA0		Regular
14	0.0000	0		0.0970	CUA0	2006	Regular
2	0.3210	333	0.7490	0.4680	CUA25		Regular
4	0.5813	332	1.3920	0.4500	CUA25		Regular
5	0.1995	286	0.7470	0.4500	CUA25		Regular
6	0.2512	293	0.7600	0.4212	CUA25		Regular
7	0.0000	0		0.2160	CUA25	2019	Emergency
7R	0.0000	0	0	0.2160	CUA25		Emergency
8	0.2294	75	0.7440	0.3780	CUA25		Regular
9	0.3153	90	7.4930	0.4680	CUA25		Regular
D1	0.8639	159	1.6910	0.7200	CUA0		Regular
D10	0.8969	313	1.9260	1.0044	CUA0		Regular
D11	0.6890	257	1.5290	0.7200	CUA0		Regular
D12	0.0000	0		0.8640	CUA0		Regular
D2	0.4934	282	1.0920	0.5400	CUA0		Regular
D3	0.0689	312	0.1470	0.1800	CUA0		Regular
D4R	0.0000	0		0.8640	CUA0		Regular
D5	0.7778	316	1.6720	0.9360	CUA0		Regular
D6	0.7545	291	1.5290	0.6120	CUA0		Regular
D7	0.8849	133	1.9240	0.5400	CUA0		Regular
D8	0.3351	282	0.9801	0.3600	CUA0		Regular
D9	0.0579	82	0.2330	0.1332	CUA0		Regular
H1	0.8274	303	1.6320	0.6120	CUA0		Regular
H10	0.2421	267	0.6240	0.4788	CUA0		Regular
H11	0.4745	282	1.1880	0.5364	CUA0		Regular
H12	0.3110	296	0.6850	0.3456	CUA0		Regular
H13	0.2861	257	0.7750	0.3240	CUA0		Regular
H14	0.2457	288	0.7080	0.3240	CUA0		Regular
H15	0.2148	319	0.5700	0.3622	CUA0		Regular
H2	0.7567	327	1.6910	0.7200	CUA0		Regular
H3	0.3330	303	0.9620	0.3960	CUA0		Regular
H4	0.2293	313	0.5960	0.5040	CUA0		Regular
H6	0.2160	136	0.5750	0.2520	CUA0		Regular
H7	0.3271	323	0.7780	0.4824	CUA0		Regular
H8	0.4874	318	1.4350	0.6660	CUA0		Regular
H9	0.1938	291	0.6630	0.2520	CUA0		Regular
R1	0.0000	0		0.0000	CUA0	2006	Emergency
R2	0.0000	0		0.1656	CUA25		Emergency
R3	0.0000	0		0.0000	CUA0	2021	Emergency
UC1-Beaufort	0.0000	0		0.2880	CUA0		Emergency
UC1-LCH	0.0000	0		0.2880	CUA0		Emergency
UC2	0.0000	0		0.2880	CUA0		Emergency

Ground Water Sources (continued)

Name or Number	Well Depth (Feet)	Casing Depth (Feet)	Screen Depth (Feet)		Well Diameter (Inches)	Pump Intake Depth (Feet)	Metered?
Name or Number	Well Depth (Feet)	Casing Depth (Feet)	Top	Bottom	Well Diameter (Inches)	Pump Intake Depth (Feet)	Metered?
1	587		477	582	8	389	Yes
10	615		530	610	10	442	Yes
11	607		510	602	10	382	Yes
12	633		477	628	12	420	Yes
13	500		202	495	10	304	Yes
14	535		270	530	8	340	No
2	630		495	625	8	399	Yes
4	665		560	660	8	384	Yes
5	645		490	640	8	389	Yes
6	610		505	605	8	399	Yes
7	656		535	651	8	378	No
7R	572		522	562	12	500	No
8	635		530	630	10	411	Yes
9	637		477	631	12	391	Yes
D1	196		175	196	20	132	Yes
D10	172		112	172	18	97	Yes
D11	166		106	166	18	95	Yes
D12	193		100	183	24	90	Yes
D2	202		159	202	20	142	Yes
D3	207		173	202	12	168	Yes
D4R	190		98	180	24	88	Yes
D5	215		170	215	20	142	Yes
D6	195		158	195	20	137	Yes
D7	194		157	194	20	138	Yes
D8	255		190	250	12	205	Yes
D9	125		80	120	12	89	Yes
H1	240		201	240	20	122	Yes
H10	136		106	126	20	91	Yes
H11	190		165	185	20	146	Yes
H12	152		134	152	20	128	Yes
H13	195		166	190	10	160	Yes
H14	213		178	213	20	155	Yes
H15	160		108	155	10	105	Yes
H2	196		123	196	20	80	Yes
H3	130		101	130	12	82	Yes
H4	131		101	131	12	92	Yes
H6	165		104	155	20	89	Yes
H7	182		152	172	20	127	Yes
H8	174		152	174	20	132	Yes
H9	265		235	255	20	187	Yes
R1	200						No
R2	525		500	525	10	280	No
R3	525		0	0	0	0	No
UC1-Beaufort	210		170	210	8	165	Yes
UC1-LCH	112		77	112	8	72	Yes
UC2	90		50	80	20	63	Yes

Are ground water levels monitored? Yes, Monthly

Does this system have a wellhead protection program? Yes

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
Seller	PWSID	Average Daily Purchased (MGD)	Days Used	MGD	Expiration	Recurring	Required to comply with water use restrictions?	Pipe Size(s) (Inches)	Use Type
Camp Lejeune (New River Air Station)	04-67-042	0.4070	107	1.2500	2060	Yes	No	12	Regular
City of Jacksonville	04-67-010	0.0000	0	0.0000		Yes	Yes	6-10	Emergency
Northwest Water Association	04-67-038	0.0000	0	0.0000		No	Yes	4	Emergency
Town of Surf City	04-71-015	0.1480	365	0.2500		Yes	Yes	8	Regular

Water Treatment Plants

Plant Name	Permitted Capacity (MGD)	Is Raw Water Metered?	Is Finished Water Ouput Metered?	Source
Black Creek 1	0.4680	No	Yes	1
Black Creek 10	0.4680	No	Yes	10
Black Creek 11	0.4680	No	Yes	11
Black Creek 12	0.4680	No	Yes	12
Black Creek 13	0.2980	No	Yes	13
Black Creek 2	0.4680	No	Yes	2
Black Creek 4	0.4680	No	Yes	4
Black Creek 5	0.4500	No	Yes	5
Black Creek 6	0.4210	No	Yes	6
Black Creek 8	0.3780	No	Yes	8
Black Creek 9	0.4680	No	Yes	9
Dixon Water Treatment Plant	4.0000	Yes	Yes	Dixon Well s 1,2,3,5,6,7,8,9,10,11
Hubert Water Treatment Plant	6.0000	Yes	Yes	Hubert Wells 1,2,3,4,6,7,8,9,10,11,12,13,14,15
R2	0.1650	No	Yes	R2

Did average daily water production exceed 80% of approved plant capacity for five consecutive days during 2025? Yes

If yes, was any water conservation implemented? No

Did average daily water production exceed 90% of approved plant capacity for five consecutive days during 2025? Yes

If yes, was any water conservation implemented? No

Are peak day demands expected to exceed the water treatment plant capacity in the next 10 years? No

4. Wastewater Information

Monthly Discharges

	Average Daily Discharge (MGD)		Average Daily Discharge (MGD)		Average Daily Discharge (MGD)
Jan	1.2620	May	1.6770	Sep	1.4130
Feb	1.3100	Jun	1.9710	Oct	1.3190
Mar	1.3780	Jul	1.5070	Nov	1.2200
Apr	1.3940	Aug	1.6470	Dec	1.3100

How many sewer connections does this system have? 16,174

How many water service connections with septic systems does this system have? 43,263

Are there plans to build or expand wastewater treatment facilities in the next 10 years? Yes

Wastewater Permits

Permit Number	Type	Permitted Capacity (MGD)	Design Capacity (MGD)	Average Annual Daily Discharge (MGD)	Maximum Day Discharge (MGD)	Receiving Stream	Receiving Basin
NC0034991	WWTP	0.0260	0.0260	0.0000		Little Northeast Creek	New River (02-6)
NC0083321	WTP	0.3000	2.9200	0.3000	0.6000	Queens Creek	New River (02-6)
NC0083551	WTP	1.0000	2.7450	0.3000	0.5000	none	New River (02-6)
NC0089877	WWTP	0.3500	0.3500	0.2000	0.3000	Wallace Creek	White Oak River (17-1)
WQ0005849	WWTP	1.5426	1.5426	0.9340	1.5760	None	New River (02-6)
WQ0019907	WTP	0.2420	0.2420	0.2500	0.3950	none	New River (02-6)
WQ0023261	WWTP	0.6000	0.6000	0.4100	0.6590	none	White Oak River (17-1)
WQ0029945	WWTP	0.1800	0.4000	0.0900	0.0320	none	New River (02-6)
WQ0034367	WWTP	1.2730	2.0000	0.4750	1.3360	none	New River (02-6)

Wastewater Interconnections

Water System	PWSID	Type	Average Daily Amount		Contract Maximum (MGD)
Water System	PWSID	Type	MGD	Days Used	Contract Maximum (MGD)
Camp Lejeune (Holcome Blvd.)	04-67-043	Discharging	0.4840	365	3.5000
City of Jacksonville	04-67-010	Discharging	0.0000	0

5. Planning

Projections

	2025	2030	2040	2050	2060	2070
Year-Round Population	164,608	167,994	171,449	174,976	178,575	182,248
Seasonal Population	0	0	0	0	0	0

Residential	7.4080	7.5870	7.7710	7.9590	8.1520	8.3490
Commercial	0.5780	0.5886	0.5995	0.6105	0.6217	0.6332
Industrial	0.0260	0.0260	0.0260	0.0260	0.0260	0.0260
Institutional	0.0780	0.0780	0.0780	0.0780	0.0780	0.0780
System Process	0.5770	0.5890	0.6000	10.3130	0.6260	0.6390
Unaccounted-for	1.8227	10.8420	11.0650	11.2930	11.5250	11.7620

Future Water Sales

Purchaser	PWSID	Contract			Pipe Size(s) (Inches)	Use Type
Purchaser	PWSID	MGD	Year Begin	Year End	Pipe Size(s) (Inches)	Use Type
Camp Lejeune (Holcom Blvd.)	04-67-043	0.5000	2026		6	Emergency

Future Supply Sources

Source Name	PWSID	Source Type	Additional Supply	Year Online	Year Offline	Type
ONWASA Burton Park	04-67-035	Ground	4.0000	2040		Regular
ONWASA Union Chapple	04-67-035	Surface	6.0000	2050		Regular

Demand v/s Percent of Supply

	2025	2030	2040	2050	2060	2070
Surface Water Supply	0.0000	0.0000	0.0000	0.0000	0.0000	0.0000
Ground Water Supply	17.1553	17.1553	17.1553	17.1553	17.1553	17.1553
Purchases	1.5000	1.5000	1.5000	1.5000	1.5000	1.5000
Future Supplies		0.0000	4.0000	10.0000	10.0000	10.0000
Total Available Supply (MGD)	18.6553	18.6553	22.6553	28.6553	28.6553	28.6553
Service Area Demand	10.4897	19.7106	20.1395	30.2795	21.0287	21.4872
Sales	0.4010	0.7640	0.7640	0.7640	0.7640	0.7640
Future Sales		0.0000	0.0000	0.0000	0.0000	0.0000
Total Demand (MGD)	10.8907	20.4746	20.9035	31.0435	21.7927	22.2512
Demand as Percent of Supply	58%	110%	92%	108%	76%	78%

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 45 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. No Change

Are there other demand management practices you will implement to reduce your future supply needs? While not strictly a demand management approach, ONWASA has implemented a leak detection program in conjunction with AMI in a effort to reduce our unaccounted water loss. Efforts are on going, and have yielded a 20% loss reduction in one part of our system.

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs? ONWASA continues its discussion with the operators of a local quarry about the potential for capturing discharge from dewatering activities to supply a planned third treatment plant in the northwestern portion of surface water source (dewatering discharge from an adjacent quarry operation) to feed this facility in addition to existing wells. Additionally design of a third water plant has started in the central area of our system. Also added are use of other aquifers not restricted by the CCPUCA.

How does the water system intend to implement the demand management and supply planning components above? Through funding from ONWASA's existing capital improvement plan and standing contracts with professional services consulting firms who specialize in these types of activities. We are also soliciting federal/state infrastructure grants applicable to this work.

Additional Information

Has this system participated in regional water supply or water use planning? Yes, ONWASA supports and participates in the funding of the Onslow Regional Water Resources Group, as noted above.

What major water supply reports or studies were used for planning? ONWASA has contracted a engineering firm to perform a hydraulic model of our system. This model will be used to aid in line upsizing and placement.

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:

NC DEQ Division of Water ResourcesLocal Water Supply Planning