Durham

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: Durham   PWSID: 03-32-010
Mailing Address:101 City Hall Plaza
Durham, NC 27701		Ownership:Municipality
 
Contact Person:Kieu TranTitle:Water Resources Analyst
Phone:919-560-4381Cell/Mobile:--
 
Secondary Contact:Reginald Hicks Phone:919-560-4381
Mailing Address:1600 Mist Lake Drive
Durham, NC 27704		Cell/Mobile:--
Distribution System
Line Type Size Range (Inches) Estimated % of lines
Asbestos Cement 6 - 8 1.00 %
Cast Iron 6-24 37.00 %
Ductile Iron 6-42 60.00 %
Other 36-54 2.00 %
What are the estimated total miles of distribution system lines?   1,197 Miles
How many feet of distribution lines were replaced during 2002?   0 Feet
How many feet of new water mains were added during 2002?   211,200 Feet
How many meters were replaced in 2002?   3,000
How old are the oldest meters in this system?   25 Year(s)
How many meters for outdoor water use, such as irrigation, are not billed for sewer services?   3,000
What is this system's finished water storage capacity?   20.0000 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, 12 Months or more
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?   No
Water Conservation
What type of rate structure is used?   Flat
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
Neuse River (10-1)0 %
Cape Fear River (02-3)0 %
County(s)% of Service Population
Durham0 %
Orange0 %
What was the year-round population served in 2002?   181,000
Has this system acquired another system since last report?   
Water Use by Type
Type of Use Metered
Connections		 Metered
Average Use (MGD)		 Non-Metered
Connections		 Non-Metered
Estimated Use (MGD)
Residential 64,124 13.8480 0 0.0000
Commercial 4,581 5.5160 40 0.0600
Industrial 203 1.2050 0 0.0000
Institutional 886 2.6360 0 0.2800

How much water was used for system processes (backwash, line cleaning, flushing, etc.)?   1.2500 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
Cary 03-92-020 3.5500 70 3.5000 2002 16 Regular
Chatham County 03-19-126 0.0830 152 0.2000 2010 16 Regular
Hillsborough 03-68-015 0.0000 0 2.0000 2003 16 Emergency
Morrisville 03-92-075 0.0000 0 1.5000 2008 Emergency
Orange Alamance 03-68-020 0.0000 0 0.3870 2003 Emergency
OWASA 03-68-010 2.2400 1 4.0000 2003 12,12 Emergency

Sales to Town of Morrisville are supplied through connection with the Town of Cary. The Orange-Alamance Water System is served through connection with the Town of Hillsborough.

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 25.0000 27.9000 May 34.7000 40.2000 Sep 26.1100 30.3000
Feb 26.8000 33.4000 Jun 38.0400 41.2000 Oct 25.4400 33.1000
Mar 25.2200 28.3200 Jul 29.3000 38.3000 Nov 23.3000 25.0000
Apr 32.0000 38.0000 Aug 27.9000 36.8000 Dec 22.5000 26.7000

February through June includes sales to Town of Cary; July through September includes purchases from Town of Cary. Average Daily and Maximum daily use volumes above do not include the daily process water.

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 Jordan Lake 0.0000 0 0.0000 10.0000 C 1,492.0000
Eno River 4.1600 61 5.9800 5.0000 F 0.0000
Flat River Lake Michie 10.9200 365 17.7100 19.0000 SY50 3,300.0000
Little River Little River Lake 20.7200 365 23.4800 18.0000 SY50 4,900.0000

* 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 Jordan Lake 1,690 Yes Cape Fear River (02-3) Chatham Regular
Eno River 144 Yes Neuse River (10-1) Durham Emergency
Flat River Lake Michie 168 Yes Neuse River (10-1) Durham Regular
Little River Little River Lake 97 Yes Neuse River (10-1) Durham Regular
What is this system's off-stream raw water supply storage capacity?   0 Million gallons
Are surface water sources monitored?   ,
Are you required to maintain minimum flows downstream of its intake or dam?   Yes
Does this system anticipate transferring surface water between river basins?   Yes

Durham has a 10 mgd Jordan Lake allocation.

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 2.9500 49 3.5000 2008 16 Regular
Chatham County 03-19-126 0.0000 0 0.2000 2010 16 Emergency
Hillsborough 03-68-015 0.0000 0 2.0000 2003 16 Emergency
Morrisville 03-92-075 0.0000 0 1.5000 2008 Emergency
Orange Alamance 03-68-020 0.0000 0 0.3870 2003 Emergency
OWASA 03-68-010 0.0000 0 4.0000 2004 12 Emergency

Town of Morrisville is served through connection with Town of Cary. Orange-Alamance Water System is served through connection with Town of Hillsborough.

Water Treatment Plants
Plant Name Permitted Capacity
(MGD)		 Is Raw Water Metered? Is Finished Water Ouput Metered? Source
Brown WTP 39.0000 No Yes Little River, Lake Michie
Williams WTP 22.0000 No Yes Lake Michie, Little River
Did average daily water production exceed 80% of approved plant capacity for five consecutive days during 2002?  No
     If yes, was any water conservation implemented?  
Did average daily water production exceed 90% of approved plant capacity for five consecutive days during 2002?  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

4. Wastewater Information

Monthly Discharges
Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)
Jan 18.7100 May 15.7900 Sep 17.6700
Feb 18.1800 Jun 15.1400 Oct 21.7800
Mar 18.8200 Jul 15.7100 Nov 21.4700
Apr 17.9200 Aug 16.9500 Dec 23.7700

How many sewer connections does this system have?   66,856
How many water service connections with septic systems does this system have?   3,200
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
NC0023841 20.0000 20.0000 8.4000 27.5400 Ellerbee Creek Neuse River (10-1)
NC0047957 20.0000 20.0000 10.1000 28.0000 New Hope Creek Cape Fear River (02-3)
Wastewater Interconnections
Water System PWSID Type Average Daily Amount Contract
Maximum (MGD)
MGD Days Used
Durham County WWTP 03-32-010 Discharging 4.1000 365 0.0000
Durham 03-32-010 Receiving 4.1000 365 0.0000

5. Planning

Projections
  2002 2010 2020 2030
Year-Round Population 181,000 240,530 276,403 298,974
Seasonal Population 0 0 0 0
 
Residential 13.8480 19.1000 22.0000 23.7000
Commercial 5.5760 7.3000 8.3000 9.0000
Industrial 1.2050 3.1000 3.5000 3.8000
Institutional 2.9160 4.1000 4.7000 5.2000
System Process 1.2500 2.7000 3.1000 3.3000
Unaccounted-for 7.2148 3.4000 3.9000 4.2000

2002 demand significantly lower than expected due to water restrictions in place for 5 months. Demand remained lower than expected after restrictions were removed.

Future Supply Sources
Source Name PWSID Source Type Additional Supply Year Online Year Offline Type
Jordan Lake - additional allocation 03-32-010 Surface 11.0000 2020 Regular
Teer Quarry 03-32-010 Surface 10.0000 2008 Regular
Demand v/s Percent of Supply
  2002 2010 2020 2030
Surface Water Supply 47.0000 47.0000 47.0000 47.0000
Ground Water Supply 0.0000 0.0000 0.0000 0.0000
Purchases 3.5000 0.0000 0.0000 0.0000
Future Supplies 10.0000 21.0000 21.0000
Total Available Supply (MGD) 50.5000 57.0000 68.0000 68.0000
Service Area Demand 32.0098 39.7000 45.5000 49.2000
Sales 0.7215 0.2000 0.0000 0.0000
Future Sales 0.0000 0.0000 0.0000
Total Demand (MGD) 32.7313 39.9000 45.5000 49.2000
Demand as Percent of Supply 65% 70% 67% 72%

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 77 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?   

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs?   

How does the water system intend to implement the demand management and supply planning components above?   

Additional Information

Has this system participated in regional water supply or water use planning?  Yes

What major water supply reports or studies were used for planning?  City of Durham Water & Sewer Strategic Plan, Jordan Lake Allocation Plan, Teery Quarry Water Supply Plan, Kerr Lake Study, and City of Durham Pitometer Report.

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:   Have plans for future interconnection with the City of Raleigh and possible expansion of the existing interconnection with the Town of Cary.

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.