Chatham County North 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:	Chatham County North Water System		PWSID:	03-19-126
Mailing Address:	Post Office Box 910 Pittsboro, NC 27312		Ownership:	County

Contact Person:	Jason Bertoncino		Title:	Director of Engineering
Phone:	919-777-1155		Cell/Mobile:	--

Secondary Contact:	Paul Weeks			Phone:	919-777-1119
Mailing Address:	PO Box 3729 Sanford, NC 27331	Cell/Mobile:		--

Distribution System

Line Type	Size Range (Inches)	Estimated % of lines
Asbestos Cement	6	1.00 %
Ductile Iron	6-24	41.00 %
Galvanized Iron	2	1.00 %
Polyvinyl Chloride	2-12	57.00 %

What are the estimated total miles of distribution system lines? 255 Miles

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

How many feet of new water mains were added during 2025? 8,600 Feet

How many meters were replaced in 2025? 400

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? 1,030

What is this system's finished water storage capacity? 3.6000 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, As Needed

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? 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
Haw River (02-1)	99 %
Deep River (02-2)	1 %

County(s)	% of Service Population
Chatham	100 %

What was the year-round population served in 2025? 23,360

Has this system acquired another system since last report? No

Sanford and Pittsboro (TriRiver Water) merged with Siler City and Chatham County effective July 1, 2025.

Water Use by Type

Type of Use	Metered Connections	Metered Average Use (MGD)
Residential	10,441	1.3800
Commercial	334	0.1460
Industrial	30	0.2100
Institutional	0	0.0000

How much water was used for system processes (backwash, line cleaning, flushing, etc.)? 0.5500 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
Chatham County Asbury Water System	40-19-010	0.0000	0			Yes	Yes	16	Emergency
City of Durham	03-32-010	0.0000	0	0.0000		Yes	Yes	16	Emergency
City of Sanford	03-53-010	0.0000	0			Yes	Yes	8	Emergency
Orange Water and Sewer Authority	03-68-010	0.0000	0			No	No	16	Emergency
Town of Pittsboro	03-19-015	0.0000	0			Yes	Yes	8	Emergency

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	1.9250	2.0640	May	2.3800	2.5030	Sep	2.7350	2.7980
Feb	1.8150	2.0980	Jun	2.4450	2.7890	Oct	2.6340	2.7980
Mar	1.8410	2.0440	Jul	2.6650	2.7890	Nov	2.1520	2.4980
Apr	2.1850	2.5030	Aug	2.6230	2.7980	Dec	2.3020	2.1980

Surface Water Sources

Stream	Reservoir	Average Daily Withdrawal		Maximum Day Withdrawal (MGD)	Available Raw Water Supply		Usable On-Stream Raw Water Supply Storage (MG)
Stream	Reservoir	MGD	Days Used	Maximum Day Withdrawal (MGD)	MGD	* Qualifier	Usable On-Stream Raw Water Supply Storage (MG)
Haw River-Jordan Lake	Jordan Lake Reservoir	2.3400	365	0.0000	3.0000	C	896.0000

* 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
Haw River-Jordan Lake	Jordan Lake Reservoir	1,700	Yes	Haw River (02-1)	Chatham		Regular

What is this system's off-stream raw water supply storage capacity? 896 Million gallons

Are surface water sources monitored? Yes, Weekly

Are you required to maintain minimum flows downstream of its intake or dam? No

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
Seller	PWSID	Average Daily Purchased (MGD)	Days Used	MGD	Expiration	Recurring	Required to comply with water use restrictions?	Pipe Size(s) (Inches)	Use Type
Chatham County Asbury Water System	40-19-010	0.0000	0	0.0000			Yes	16	Emergency
City of Durham	03-32-010	0.0990	365	4.0000		No	Yes	16	Regular
City of Sanford	03-53-010	0.0000	0	0.5000		Yes	Yes	8	Emergency
Orange Water and Sewer Authority	03-68-010	0.0000	0	0.0000		No	No	16	Emergency
Town of Pittsboro	03-19-015	0.0000	0	0.5000		Yes	Yes	6	Emergency

Water Treatment Plants

Plant Name	Permitted Capacity (MGD)	Is Raw Water Metered?	Is Finished Water Ouput Metered?	Source
Jordan Lake WTP	3.0000	Yes	Yes	Jordan 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? No

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? No

Are peak day demands expected to exceed the water treatment plant capacity in the next 10 years? Yes

Chatham County and the City of Durham have amended their contract for the City of Durham to supply up to 4 MGD of treated water to Chatham County while TriRiver water determines long-term solutions for interconnectivity and supply sources.

4. Wastewater Information

Monthly Discharges

	Average Daily Discharge (MGD)		Average Daily Discharge (MGD)		Average Daily Discharge (MGD)
Jan	0.0091	May	0.0042	Sep	0.0049
Feb	0.0049	Jun	0.0019	Oct	0.0068
Mar	0.0031	Jul	0.0019	Nov	0.0084
Apr	0.0032	Aug	0.0009	Dec	0.0078

How many sewer connections does this system have? 43

How many water service connections with septic systems does this system have? 3,204

Are there plans to build or expand wastewater treatment facilities in the next 10 years? No

Wastewater Permits

Permit Number	Type	Permitted Capacity (MGD)	Design Capacity (MGD)	Average Annual Daily Discharge (MGD)	Maximum Day Discharge (MGD)	Receiving Stream	Receiving Basin
NC0035866	WWTP	0.0250	0.0250	0.0047	0.0288	Haw River	Haw River (02-1)
NCG590014	WWTP	0.0000	0.0000	0.2000	0.9000	Jordan Lake - New Hope Arm	Haw River (02-1)

5. Planning

Projections

	2025	2030	2040	2050	2060	2070
Year-Round Population	23,360	26,360	31,360	36,360	41,360	46,360
Seasonal Population	0	0	0	0	0	0

Residential	1.3800	2.4200	3.0400	3.6500	4.7000	5.7600
Commercial	0.1460	0.2600	0.3200	0.3900	0.5000	0.6100
Industrial	0.2100	0.3500	0.4400	0.5200	0.6700	0.8300
Institutional	0.0000	0.0000	0.0000	0.0000	0.0000	0.0000
System Process	0.5500	0.9100	1.1400	1.3700	1.7600	2.1500
Unaccounted-for	0.1530	0.2500	0.3100	0.3800	0.4900	0.6000

Demand projections were developed under regional utility master planning studies for Chatham County North by TriRiver Water. Average day raw water demands are shown.

Future Supply Sources

Source Name	PWSID	Source Type	Additional Supply	Year Online	Year Offline	Type
Sanford	03-53-010	Surface	4.0000	2050		Regular

TriRiver Water is conducting ongoing planning efforts to identify future water treatment facilities. Future supply sources are subject to change.

Demand v/s Percent of Supply

	2025	2030	2040	2050	2060	2070
Surface Water Supply	3.0000	3.0000	3.0000	3.0000	3.0000	3.0000
Ground Water Supply	0.0000	0.0000	0.0000	0.0000	0.0000	0.0000
Purchases	4.0000	4.0000	4.0000	4.0000	4.0000	4.0000
Future Supplies		0.0000	0.0000	4.0000	4.0000	4.0000
Total Available Supply (MGD)	7.0000	7.0000	7.0000	11.0000	11.0000	11.0000
Service Area Demand	2.4390	4.1900	5.2500	6.3100	8.1200	9.9500
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)	2.4390	4.1900	5.2500	6.3100	8.1200	9.9500
Demand as Percent of Supply	35%	60%	75%	57%	74%	90%

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 59 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. Chatham County merged utilities with TriRiver Water and Siler City on July 1, 2025. TriRiver Water's planning efforts and utility management should adequately address the capacity and management issues faced in the future.

Are there other demand management practices you will implement to reduce your future supply needs? TriRiver Water's regional planning efforts should adequately address demand management practices in the future.

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs? TriRiver water is conducting ongoing planning efforts to identify future water treatment facilities. Timing, location, and capacity of future water treatment facilities are being evaluated under ongoing planning efforts.

How does the water system intend to implement the demand management and supply planning components above? TriRiver Water's merger should standardize the technical assistance, funding, and permitting across Pittsboro, Sanford, Siler City, and Chatham County to address demand management and supply planning.

Additional Information

Has this system participated in regional water supply or water use planning? Yes, Yes, TriRiver Water has engaged in regional utility master planning studies that are ongoing.

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:

NC DEQ Division of Water ResourcesLocal Water Supply Planning