Raleigh

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: Raleigh   PWSID: 03-92-010
Mailing Address:P.O. Box 590
Raleigh, NC 27602		Ownership:Municipality
 
Contact Person:Edward BuchanTitle:Assistant Director
Phone:919-996-3471Cell/Mobile:919-760-0688
Distribution System
Line Type Size Range (Inches) Estimated % of lines
Asbestos Cement 6-8 2.38 %
Cast Iron 4-12 12.27 %
Ductile Iron 3-54 62.73 %
Galvanized Iron 1-4 0.72 %
Other 1-12 11.23 %
Polyvinyl Chloride 2-12 10.67 %
What are the estimated total miles of distribution system lines?   2,526 Miles
How many feet of distribution lines were replaced during 2025?   36,960 Feet
How many feet of new water mains were added during 2025?   230,519 Feet
How many meters were replaced in 2025?   7,002
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?   9,635
What is this system's finished water storage capacity?   57.6500 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?   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?   Yes

Use pressure sensors to help detect possible leaks. Also considering using a satellite technology to help detect leaks based on conductivity and other chemical markers.

Water Conservation
What type of rate structure is used?   Flat/Fixed, Increasing Block
How much reclaimed water does this system use?   0.6200 MGD   For how many connections?   37
Does this system have an interconnection with another system capable of providing water in an emergency?   Yes

Reuse value only represents amount sold to customers and does not include volume irrigated at the Neuse River Resource Recovery Facility.

2. Water Use Information

Service Area
Sub-Basin(s)% of Service Population
Neuse River (10-1)99 %
Contentnea Creek (10-2)1 %
County(s)% of Service Population
Wake100 %
What was the year-round population served in 2025?   660,000
Has this system acquired another system since last report?   No
Water Use by Type
Type of Use Metered
Connections		 Metered
Average Use (MGD)		 Non-Metered
Connections		 Non-Metered
Estimated Use (MGD)
Residential 205,436 36.1800 0 0.0000
Commercial 13,595 10.5900 0 0.0000
Industrial 113 2.4300 0 0.0000
Institutional 1,230 7.0300 0 0.0000

How much water was used for system processes (backwash, line cleaning, flushing, etc.)?   1.3000 MGD

Meter totals include irrigation meters for the given class. Residential includes single family residential and multi-family residential. Approximately half of the process water is recycled at the water plants.

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
Cary 03-92-020 0.0000 0 0.0000 2032 Yes No 24 Emergency
City of Durham 03-32-010 0.0000 0 0.0000 2026 Yes Yes 24 Emergency
Franklin County 02-35-030 0.4100 352 0.4000 2030 Yes Yes 24 Regular
Fuquay-Varina 03-92-055 1.3500 365 1.7500 2035 No Yes 16 Regular
Holly Springs 03-92-050 0.0000 0 1.2000 2029 No No 16 Emergency
Johnston County 03-51-070 0.8600 365 2.5000 2031 No No 16 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 56.0000 67.2000 May 60.6000 73.8000 Sep 66.0000 75.2000
Feb 54.5000 62.4000 Jun 64.2000 80.9000 Oct 63.6000 76.6000
Mar 57.0000 72.2000 Jul 66.6000 76.8000 Nov 57.9000 66.6000
Apr 60.0000 73.0000 Aug 64.8000 75.9000 Dec 55.0000 68.0000

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
Neuse River Falls Lake 49.2000 365 0.0000 88.2000 SY50 18,800.0000
Swift Creek Lake Benson 11.3000 365 0.0000 11.2000 SY50 2,085.0000

* 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
Neuse River Falls Lake 772 Yes Neuse River (10-1) Wake Regular
Swift Creek Lake Benson 36 Yes Neuse River (10-1) Wake Regular
What is this system's off-stream raw water supply storage capacity?   150 Million gallons
Are surface water sources monitored?   Yes, Daily
Are you required to maintain minimum flows downstream of its intake or dam?   Yes
Does this system anticipate transferring surface water between river basins?   No
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
Cary 03-92-020 0.0000 0 0.0000 2032 Yes No 24 Emergency
Durham 03-32-010 0.0000 0 0.0000 2026 Yes No 24 Emergency
Johnston County 03-51-070 0.0000 0 2.5000 2031 No Yes 16 Emergency
Water Treatment Plants
Plant Name Permitted Capacity
(MGD)		 Is Raw Water Metered? Is Finished Water Ouput Metered? Source
Dempsey E. Benton WTP 16.0000 Yes Yes Lake Benson
E.M. Johnson WTP 86.0000 Yes Yes Falls Lake
Did average daily water production exceed 80% of approved plant capacity for five consecutive days during 2025?  No
     If yes, was any water conservation implemented?  
Did average daily water production exceed 90% of approved plant capacity for five consecutive days during 2025?  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?  No

Expansion of the EM Johnson Water Plant to 120 MGD expected to be completed by 2032

4. Wastewater Information

Monthly Discharges
Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)
Jan 51.7000 May 53.1000 Sep 50.4000
Feb 55.8000 Jun 51.9000 Oct 50.3000
Mar 54.1000 Jul 55.2000 Nov 48.7000
Apr 52.3000 Aug 59.0000 Dec 49.8000

How many sewer connections does this system have?   212,438
How many water service connections with septic systems does this system have?   1,049
Are there plans to build or expand wastewater treatment facilities in the next 10 years?   Yes

Will expand the Neuse River facility to 90 MGD within 10 years. Also studying possible expansions of the Smith Creek and Little Creek facilities.

Wastewater Permits
Permit Number Type Permitted Capacity
(MGD)		 Design Capacity
(MGD)		 Average Annual
Daily Discharge
(MGD)		 Maximum Day Discharge
(MGD)		 Receiving Stream Receiving Basin
NC0029033 WWTP 75.0000 75.0000 49.3000 Neuse River Neuse River (10-1)
NC0030759 WWTP 6.0000 4.0000 2.5100 3.5000 Smith Creek Neuse River (10-1)
NC0079316 WWTP 2.2000 1.8500 1.0800 2.6000 Little Creek Contentnea Creek (10-2)
Wastewater Interconnections
Water System PWSID Type Average Daily Amount Contract
Maximum (MGD)
MGD Days Used
Apex 03-92-045 Receiving 0.0000 0 1.0000
Clayton 03-51-020 Receiving 0.0000 0 1.0000
Johnston County 03-51-070 Receiving 0.0000 0 1.0000
Middlesex 04-64-050 Receiving 0.1200 365 0.1900

5. Planning

Projections
  2025 2030 2040 2050 2060 2070
Year-Round Population 660,000 742,000 905,000 1,073,000 1,344,000 1,513,630
Seasonal Population 0 0 0 0 0 0
 
Residential 36.1800 36.4800 38.6400 44.5500 50.5100 56.4500
Commercial 10.5900 16.8900 19.9600 23.0100 26.0900 29.1700
Industrial 2.4300 1.9600 2.3200 2.6700 3.0300 3.3900
Institutional 7.0300 2.9500 3.9400 4.0200 4.5600 5.1000
System Process 1.3000 3.0200 3.3000 3.7000 4.0400 4.4000
Unaccounted-for 0.3646 1.1000 1.5000 2.2000 2.8000 3.4000

Projected residential water demand for 2030 includes 3.80 MGD wholesale water sales which will expire before 2040.

Future Supply Sources
Source Name PWSID Source Type Additional Supply Year Online Year Offline Type
Crest gates for Lake Wheeler and Lake Benson 03-92-010 Surface 2.5000 2027 Regular
Little River Reservoir 03-92-010 Surface 14.0000 2045 Regular
Neuse River Intake 03-92-010 Surface 45.0000 2040 Regular
Demand v/s Percent of Supply
  2025 2030 2040 2050 2060 2070
Surface Water Supply 99.4000 99.4000 99.4000 99.4000 99.4000 99.4000
Ground Water Supply 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Purchases 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Future Supplies 2.5000 47.5000 61.5000 61.5000 61.5000
Total Available Supply (MGD) 99.4000 101.9000 146.9000 160.9000 160.9000 160.9000
Service Area Demand 57.8946 62.4000 69.6600 80.1500 91.0300 101.9100
Sales 2.6054 4.6600 0.4100 0.4100 0.4100 0.4100
Future Sales 0.0000 0.0000 0.0000 0.0000 0.0000
Total Demand (MGD) 60.5000 67.0600 70.0700 80.5600 91.4400 102.3200
Demand as Percent of Supply 61% 66% 48% 50% 57% 64%

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.    No changes

Are there other demand management practices you will implement to reduce your future supply needs?   Continued use of tiered water rates, potential expansion of reuse water system to NCSU main campus, etc..

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs?   Possible consideration of direct potable reuse

How does the water system intend to implement the demand management and supply planning components above?   Continue planning efforts with consultants to ensure resource projects move forward in order to meet future demands.

Additional Information

Has this system participated in regional water supply or water use planning?  Yes, Active member of the Triangle Water Supply Partnership (TWSP), which developed a long range water supply plan for all the triangle area utility systems.

What major water supply reports or studies were used for planning?  TWSP long range water supply plan and 421 Corridor water supply plan

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-DWR should develop regulations for hyper scale data centers to help mitigate the substantial impacts on local water resources.

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.