Harnett Regional Water System

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: Harnett Regional Water System   PWSID: 03-43-045
Mailing Address:P. O. Box 1119
Lillington, NC 27546		Ownership:County
 
Contact Person:Allan O'BriantTitle:Water Plant Supervisor
Phone:910-893-7575Cell/Mobile:910-984-6894
 
Secondary Contact:Tommy Burns Phone:910-814-3042
Mailing Address:P. O. Box 1119
Lillington, NC 27546		Cell/Mobile:910-984-6894
Distribution System
Line Type Size Range (Inches) Estimated % of lines
Asbestos Cement 6-16 0.34 %
Ductile Iron 4-36 7.32 %
Polyvinyl Chloride 2-16 92.34 %
What are the estimated total miles of distribution system lines?   1,555 Miles
How many feet of distribution lines were replaced during 2024?   3,000 Feet
How many feet of new water mains were added during 2024?   169,800 Feet
How many meters were replaced in 2024?   5
How old are the oldest meters in this system?   4 Year(s)
How many meters for outdoor water use, such as irrigation, are not billed for sewer services?   288
What is this system's finished water storage capacity?   24.8500 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

Finished Water Storage Capacity does not include a 3.0 million gallon clearwell at the water treatment plant, because this is a chlorine contact chamber for Free Chlorine Contact Time (CT) and it's effluent still needs additional treatment.

Installed 2158 new meters & Replaced 5 meters.

Programs
Does this system have a program to work or flush hydrants?   Yes, Semi-Annually
Does this system have a valve exercise program?   Yes, As Needed
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?   No
Does this system have an active water conservation public education program?   No
Does this system have a leak detection program?   No

Hydrants and Blow-offs are worked and flushed by HRW Water Quality Technician Staff with emphasis on dead ends, low usage areas and areas they have on a monthly, bi-monthly or quarterly flush schedule. Each Fire District also inspects, test and flush hydrants for insurance rating and maintaining availability in fire suppression emergencies. Hydrant issues are reported by Fire Departments to Harnett Regional Water for repairs.

Harnett Regional Water has completed it's system wide water meter change over to AMI water meters.

Water Conservation
What type of rate structure is used?   Uniform
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?   No

Interconnections and agreements with surrounding water systems will provide limited supply to our water distribution system due to the large Harnett Regional Water System coverage area which contains 1554.72 miles of distribution pipe lines. This area covers all of Harnett County except the Town of Dunn. We also supply to Consecutive Water Systems outside of Harnett County, these include Fort Bragg Military Base, Holly Springs, Fuquay-Varina, Spring Lake, Johnston County Water System & East Moore District.

2. Water Use Information

Service Area
Sub-Basin(s)% of Service Population
Cape Fear River (02-3)85 %
South River (02-4)15 %
County(s)% of Service Population
Harnett89 %
Cumberland8 %
Wake3 %
What was the year-round population served in 2024?   111,655
Has this system acquired another system since last report?   No

Population served is taken from the 2025 Permit to Operate a Community Public Water System License issued at the beginning of 2025 Year. Total connections from Administrations Updated request for April 17, 2024 Annual Sanitary Water Survey used for calculation of year round population for permit.

2024 System map uploaded.

Water Use by Type
Type of Use Metered
Connections		 Metered
Average Use (MGD)		 Non-Metered
Connections		 Non-Metered
Estimated Use (MGD)
Residential 45,840 6.1699 0 0.0000
Commercial 867 0.5638 0 0.0000
Industrial 13 0.0189 0 0.0000
Institutional 37 0.1347 0 0.0000

How much water was used for system processes (backwash, line cleaning, flushing, etc.)?   1.1899 MGD

How System Process Daily Average is calculated = NPDES metering outfall is a total of the filter backwashing, filter to waste, GAC filter washes if on-line and Pulsators sludge blowdown decanting ~ Combined Daily Average = 1.0131 + Plant Process daily average = 0.0466 + Distribution Flushing daily average = 0.01767 + PAC tower makeup water metering daily average = 0.0024 + Polymer carrying water (Process & Sludge) daily average 0.0230 + Liquid sludge transfer to North Harnett Regional WWTP for centrifuging daily average = 0.0871

System Process Daily Average = 1.18987 MGD ~ 1.1899 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
MGD Expiration Recurring
Angier 03-43-015 0.8602 365 1.4400 2059 Yes Yes 16 Regular
Bragg Comm./NTA Water System 50-43-001 0.2276 365 0.8000 2053 Yes Yes 16 Regular
Campbell University 03-43-030 0.0643 365 0.2500 2013 Yes Yes 20 Regular
Coats 03-43-020 0.1612 365 0.3000 2017 Yes Yes 12 Regular
Dunn 03-43-010 0.0000 0 0.2500 Yes No 12 Emergency
East Moore Water District 50-63-011 1.6514 365 3.0000 2042 Yes Yes 16 Regular
Fort Bragg Water System 50-26-019 2.9398 183 4.0000 2046 Yes Yes 24 Regular
Fuquay Varina 03-92-055 1.9217 365 4.0000 2032 Yes Yes 12&36 Regular
Holly Springs 03-92-050 3.6149 365 10.0000 2048 Yes Yes 36 Regular
Johnston County 03-51-070 1.2687 365 2.5000 2056 Yes Yes 12&12 Regular
Lillington 03-43-025 0.4268 365 2.0000 2017 Yes Yes 16 Regular
Linden 03-26-045 0.1524 365 0.2500 2031 Yes Yes 6 Regular
Spring Lake 03-26-020 0.3295 365 0.5000 2006 Yes Yes 8 Regular
Woodlake 03-63-114 0.1645 365 0.1400 1999 Yes Yes 6 Regular

We supply Fort Bragg on an alternating arrangement with Public Works Commission (PWC), thus the 183 days used. Fort Bragg yearly average 1.4699 x 2 = 2.9932 MGD to represent the daily demand supplied every day that we pump to them.

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 20.7549 23.7819 May 22.7399 27.5519 Sep 23.6209 26.5119
Feb 20.0939 22.0719 Jun 29.1729 35.2219 Oct 24.1339 26.1419
Mar 20.6249 22.2519 Jul 25.3329 32.0419 Nov 22.0369 25.0919
Apr 22.8529 28.2419 Aug 24.7289 29.4719 Dec 22.5539 25.7919

Average Daily and Maximum Day includes the Dunn average purchase of 0.0519 MGD added to the Water Treatment Plants daily average and maximum day.

2024 Water withdrawal average = 23,236,054.79 gallons ~ 23.236 MGD

Surface Water Sources
Stream Reservoir Average Daily Withdrawal Maximum Day
Withdrawal (MGD)		 Available Raw
Water Supply		 Usable On-Stream
Raw Water Supply
Storage (MG)
MGD Days Used MGD * Qualifier
Cape Fear River Harnett County WTP Reservoir 23.2360 365 35.1700 42.0000 T 61.0000

* Qualifier: C=Contract Amount, SY20=20-year Safe Yield, SY50=50-year Safe Yield, F=20% of 7Q10 or other instream flow requirement, CUA=Capacity Use Area Permit

Surface Water Sources (continued)
Stream Reservoir Drainage Area
(sq mi)		 Metered? Sub-Basin County Year
Offline		 Use
Type
Cape Fear River Harnett County WTP Reservoir 3,464 Yes Cape Fear River (02-3) Harnett Regular
What is this system's off-stream raw water supply storage capacity?   61 Million gallons
Are surface water sources monitored?   Yes, Daily
Are you required to maintain minimum flows downstream of its intake or dam?   No
Does this system anticipate transferring surface water between river basins?   Yes

Cape Fear River average daily withdrawal is the 2024 - 12 month WIMS Annual Local Water Supply Flow Report using Monthly Total Raw MGD Treated, which is the East & West Pulsator Train flow meters.

2024 annual withdrawal average is 8,481,160,000 gallons / 365 day per year =23,236,054.79 ~ 23.236 MGD.
2024 annual withdrawal average with purchases is 8,481,160,000 WTP + 18,943,500 Dunn = 8,500,103,500 gallons / 365 days per yr. =23,287,954
~23.288 MGD.

The USGS low flow analysis for the Sanford WTP expansion project annual 7Q10 flow at Lillington river gauge is 288 CFS.
This low flow study is for 2007 to 2022. For 20% for 7Q10 ~ 288 cubic feet sec รท 1.5472 gal. /sec conversion to MG = 186.1427 MG and then 20% of
186.1427 MG = 37.228 MGD.

Harnett County Regional WTP production rating is 42.000 MGD.

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
Apex 03-92-045 0.0000 0 0.0000 Yes 12 Emergency
Cary 03-92-020 0.0000 0 0.0000 Yes 12 Emergency
Dunn 03-43-010 0.0519 365 1.0000 2050 Yes Yes 16 Regular
Fuquay Varina 03-92-055 0.0000 0 1.3000 2029 Yes Yes 12 Emergency
Holly Springs 03-92-050 0.0000 0 1.0000 2041 Yes Yes 12 Emergency
Johnston County 03-51-070 0.0000 0 3.9000 Yes Yes 12 Emergency
Raleigh 03-92-010 0.0000 0 2.0000 Yes Yes 12 Emergency
Smithfield 03-51-010 0.0000 0 0.0000 Yes Yes 12 Emergency

Dunn Water System 03-43-010 is the only system that we purchase water from daily. This purchase is to an isolated section of our distribution system.

Water Treatment Plants
Plant Name Permitted Capacity
(MGD)		 Is Raw Water Metered? Is Finished Water Ouput Metered? Source
Harnett County Regional WTP 42.0000 Yes Yes Cape Fear River
Did average daily water production exceed 80% of approved plant capacity for five consecutive days during 2024?  No
     If yes, was any water conservation implemented?  
Did average daily water production exceed 90% of approved plant capacity for five consecutive days during 2024?  No
     If yes, was any water conservation implemented?  
Are peak day demands expected to exceed the water treatment plant capacity in the next 10 years?  Yes

Permitted WTP Capacity is 42.000 MGD. 80% WTP Capacity = 33.800 MGD & 90% WTP Capacity = 37.800 MGD

Maximum Day Demand 2024 was 35.2219 MGD on June 29th = HCRWTP (35.170) + Dunn purchase (0.0519)
High 5 Day Average at WTP - June 21st to 25th was 33.202 MGD (34.770 + 34.440 + 32.810 +32.130 + 31.860)

4. Wastewater Information

Monthly Discharges
Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)
Jan 10.8140 May 9.3860 Sep 13.0990
Feb 9.1900 Jun 8.2910 Oct 11.1180
Mar 9.7450 Jul 11.4410 Nov 9.0130
Apr 9.0730 Aug 13.1760 Dec 8.6200

How many sewer connections does this system have?   15,403
How many water service connections with septic systems does this system have?   31,324
Are there plans to build or expand wastewater treatment facilities in the next 10 years?   Yes

North Harnett Regional Wastewater Treatment Plant (NHRWWTP) is currently expanding from 7.500 MGD to 16.500 MGD. Notice to Proceed issued March 18, 2024. NHRWWTP Construction is well under way.

Wastewater Permits
Permit Number Type Permitted Capacity
(MGD)		 Design Capacity
(MGD)		 Average Annual
Daily Discharge
(MGD)		 Maximum Day Discharge
(MGD)		 Receiving Stream Receiving Basin
NC0007684 WTP 42.0000 42.0000 1.1899 1.7460 Cape Fear River Cape Fear River (02-3)
NC0021636 WWTP 7.5000 7.5000 5.0900 19.0580 Cape Fear River Cape Fear River (02-3)
NC0088366 WWTP 15.0000 15.0000 5.1580 9.1340 Lower Little River Cape Fear River (02-3)
Wastewater Interconnections
Water System PWSID Type Average Daily Amount Contract
Maximum (MGD)
MGD Days Used
Angier 03-43-015 Receiving 0.8602 365 1.0800
Fort Liberty Water System 50-26-019 Receiving 3.5293 365 10.0000
Fuquay-Varina 03-92-055 Receiving 1.7365 365 2.6000
Liberty Comm./NTA Water System 50-43-001 Receiving 0.2427 365 0.8000
Lillington 03-43-025 Receiving 0.8220 365 1.2000

12th year receiving Wastewater discharge from Fort Liberty (Bragg) Water System. This flow is treated by the South Harnett Regional WWTP.

5. Planning

Projections
  2024 2030 2040 2050 2060 2070
Year-Round Population 111,655 126,726 145,262 163,490 181,709 200,422
Seasonal Population 0 0 0 0 0 0
 
Residential 6.1699 6.9699 7.9894 8.9919 9.9939 11.0232
Commercial 0.5638 0.6732 0.9047 1.2159 1.6340 2.1960
Industrial 0.0189 0.0213 0.0595 0.0316 0.0386 0.0470
Institutional 0.1347 0.1517 0.1849 0.2254 0.2748 0.3349
System Process 1.1899 1.2631 1.3953 1.5412 1.7025 1.8806
Unaccounted-for 2.8636 3.2188 3.7345 4.2565 4.8371 5.4887

Population Served - Used NC State Office of Budget and Management Harnett County projects at 80% since we do not supply Dunn.
Residential - Used 55 gallon per day per capita times the Population served number.
Commercial - used 3% growth, Industrial - used 2% growth, Institutional - used 2% growth & System Process - used 1% growth.
Formula used = Present Value ( 1+ %growth)exponent number of years

Future Water Sales
Purchaser PWSID Contract Pipe Size(s) (Inches) Use Type
MGD Year Begin Year End
Town of Angier 03-43-015 1.5600 2030 16 Regular

Harnett Regional Water has been in discussions with the Town of Angier to increase contract amount from 1.44 MGD to 3.00 MGD (+1.56 MGD), but no
actions have taken place to date.

Future Supply Sources
Source Name PWSID Source Type Additional Supply Year Online Year Offline Type
Cape Fear River 00-00-000 Surface 12.0000 2030 Regular

Future development of a new Water Treatment Plant near the old Swift Industry Plant's raw intake in the Town of Erwin. Harnett Regional Water gained ownership when we purchased the Erwin Water System. This will help the water supply for the far reaches of the Metro Water District and Johnston County Water System. The Metro Water District is becoming an extreme challenge to meet the demands during the summer months. We feed into Johnston County's Water System thru our main master meter vaults. The main Meter Vaults are at 210/Old Stage Road that feeds Johnston County's Water Tower at McGee's Crossroads (intersection of Highway 210 and 50) and the meter vault that feeds into the Town of Benson Area (Hwy 27 & Johnston County Line).

Demand v/s Percent of Supply
  2024 2030 2040 2050 2060 2070
Surface Water Supply 42.0000 42.0000 42.0000 42.0000 42.0000 42.0000
Ground Water Supply 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Purchases 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
Future Supplies 12.0000 12.0000 12.0000 12.0000 12.0000
Total Available Supply (MGD) 43.0000 55.0000 55.0000 55.0000 55.0000 55.0000
Service Area Demand 10.9408 12.2980 14.2683 16.2625 18.4809 20.9704
Sales 12.2835 29.2045 29.2045 29.2045 29.2045 29.2045
Future Sales 1.5600 1.5600 1.5600 1.5600 1.5600
Total Demand (MGD) 23.2243 43.0625 45.0328 47.0270 49.2454 51.7349
Demand as Percent of Supply 54% 78% 82% 86% 90% 94%

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 55 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.     Harnett Regional Water (HRW) has completed it's conversion to Automatic Meter Reading (AMR) system for the distribution customers. This should allow HRW and customers themselves to monitor / be contacted for high water usage due to customer side of meter leaks, running toilets etc.

Are there other demand management practices you will implement to reduce your future supply needs?   Future conservation could be the implementation of an active Water Conservation Public Education Program.

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs?    A possibility for the future to supply the southern and Fort Liberty(Bragg) part of the Harnett Regional Water grid is to build a water treatment facility on the Upper or Lower Little River.

How does the water system intend to implement the demand management and supply planning components above?    Harnett Regional Water did a hydraulic water model of our water system 5 plus years ago. We are planning to contract again with Hazen and Sawyer to
update the hydraulic model of distribution system and use it as a driver for future planning.

Additional Information

Has this system participated in regional water supply or water use planning?  Yes, Harnett Regional Water is a member of the Triangle Water Supply Partnership.

What major water supply reports or studies were used for planning?  Have had an engineering firm complete a hydraulic model on our distribution system. That was about 5 or more years ago and are planning to get an updated hydraulic model completed to reflect the great influx of new housing developments over the last several years. The current hydraulic model did show some areas that needed improvements to meet future demands. The engineering firm has master planned the needed upgrades and projected cost. We have incorporated a few of the easily implemented / low cost recommendations and there are others that are expensive and will need future planning and capital forecasting.

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:   The next area of the distribution system that need planning to meet future supply is the North Finished Distribution Section - also called Metro District. The Metro District also supplies parts of Johnston County Water System and is getting harder to pump the water out fast enough and thru our tanks and booster stations to meet our and their demands, especially in the summer months. The long range plan is the construction of a water plant in Erwin as mentioned earlier in this report to supply this area in the county and Johnston County Water System. The other concern is the Northwest District, which is experiencing very rapid growth that needs upgrades to meet these future demands. Plans have been made to put an elevated tank and booster station halfway to the 5.3 MGD ground storage tank in Wake County. This increases the Wake County High Service pumping capacity at the water plant since it will decrease some of the 330 feet of head these pumps have to pump against. Harnett Regional Water is also in planning stages to add a second elevated tank in the Northwest District. Finally overall Harnett County is experiencing rapid growth and many subdivisions are in the execution stage of development and will require continues planning to meet these needs.

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.