Two Rivers Utilities/Gastonia

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: Two Rivers Utilities/Gastonia   PWSID: 01-36-010
Mailing Address:P.O. Box 1748
Gastonia, NC 28053		Ownership:Municipality
 
Contact Person:Kyle ButlerTitle:Utilities Engineer
Phone:704-866-6768Cell/Mobile:704-214-9078
Distribution System
Line Type Size Range (Inches) Estimated % of lines
Asbestos Cement 6-16 7.64 %
Cast Iron 6-42 10.61 %
Ductile Iron 6-36 46.41 %
Other All 6.25 %
Polyvinyl Chloride 2-10 29.09 %
What are the estimated total miles of distribution system lines?   714 Miles
How many feet of distribution lines were replaced during 2024?   0 Feet
How many feet of new water mains were added during 2024?   30,162 Feet
How many meters were replaced in 2024?   976
How old are the oldest meters in this system?   21 Year(s)
How many meters for outdoor water use, such as irrigation, are not billed for sewer services?   2,696
What is this system's finished water storage capacity?   13.7500 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

The City of Gastonia has begun an AMI program that will replace all water meters in the system. This will take approximately 3 years to complete. The City has begun replacing broken meters with AMI capable meters. Water meters placed for new development are also AMI capable.

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

We continue to utilize our valve operation program that began in 2016. In 2024, Two Rivers Utilities exercised 1,405 valves. This is 9.5% or the valves in the system. Valves are GPS located and the data is mapped to our GIS system. The valve crew also has leak detection equipment available to help locate unseen leaks. Water Treatment Plant staff flow hydrants as needed for water quality. The fire department performs static pressure tests on hydrants throughout the year and reports any operational issues to our Utilities Maintenance Division for repairs. We are currently working on a project to implement an AMI system. As a part of the project all existing water meters are to be replaced by the end of 2027 with AMI capable water meters.

Water Conservation
What type of rate structure is used?   Flat/Fixed, 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

We have emergency water connections with the City of Belmont, the City of Bessemer City, and the Town of Dallas. Their system capacities and hydraulic gradient do not allow them to provide adequate supply to our system.

2. Water Use Information

Service Area
Sub-Basin(s)% of Service Population
South Fork Catawba River (03-2)67 %
Catawba River (03-1)33 %
County(s)% of Service Population
Gaston100 %
What was the year-round population served in 2024?   94,911
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 32,074 4.4847 3 0.0002
Commercial 3,007 2.0959 24 0.0355
Industrial 120 0.6211 0 0.0000
Institutional 198 0.8516 0 0.0000

How much water was used for system processes (backwash, line cleaning, flushing, etc.)?   5.0669 MGD

Non-metered connections are for permitted hydrant usage for filling pools or water for construction sites that are billed through miscellaneous invoice. The Residential Non-metered connections consisted of (3) pool connections over (3) total days. The MGD represents the volume (86,000 gal.) over (366) days not (6) days to report in terms of MGD.

System Process Water includes 3.8306 MGD water to Rankin Lake for water quality. Some of the raw water pumped from Mountain Island Lake into Rankin Lake which is our raw water reservoir is used to maintain water levels and water quality. There is no other water supply to Rankin Lake. The remainder of the raw water is sent to the WTP for treatment.

Regarding the high amount of unaccounted-for water (16% of total supply) -- we continue to work to increase the accuracy of our internal reporting of filling and flushing new water lines and flushing for water quality. The valve operation crew continues to locate and verify the operation of the valves in our system as mentioned in Sections 1 and 5 of the report. Verification of the location and operation of our valves will reduce the response time and shut down of water lines when we have main breaks. We will continue to use our leak detection equipment to find and repair underground leaks. We are converting to an AMI system over the next 3 years.

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
Belmont 01-36-015 0.0000 0 2020 Yes Yes 12 Emergency
Bessemer City 01-36-025 1.0555 70 1.7000 2028 No Yes 12 Emergency
Clover, SC 46-10-006 0.7253 366 1.0167 2045 Yes Yes 16 Regular
Dallas/Spencer Mt Village 01-36-065 0.0342 366 1.0000 2028 Yes Yes 12 Regular
Lowell 01-36-060 0.3676 366 0.6180 2029 Yes Yes 12,6 Regular
McAdenville 01-36-045 0.1629 366 1.0000 2030 Yes Yes 16 Regular
Ranlo 01-36-034 0.3387 366 0.6000 2040 Yes Yes 8 Regular

Bessemer City consumed water in 70 days distributed over 8 of 12 months in 2024. Contracted max sales is 1.7000 MGD.

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 17.9580 18.0000 May 18.0000 18.0000 Sep 17.0380 18.0000
Feb 16.7450 18.0000 Jun 18.7570 27.6000 Oct 18.0000 18.0000
Mar 17.9770 18.0000 Jul 19.4890 27.6000 Nov 18.0250 18.7500
Apr 16.8440 18.0000 Aug 18.4000 27.2000 Dec 18.0000 18.0000

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
Catawba River Mountain Island Lake 17.9454 366 27.6000 75.0000 C 8,601.0000
South Fork Catawba River 0.0000 0 0.0000 15.5000 F 0.0000

* 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
Catawba River Mountain Island Lake 1,819 Yes Catawba River (03-1) Gaston Regular
South Fork Catawba River 560 No South Fork Catawba River (03-2) Gaston Emergency
What is this system's off-stream raw water supply storage capacity?   180 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

Existing sub-basin transfer between South Fork Catawba and Catawba River will continue.

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
Belmont 01-36-015 0.0000 0 0.0000 2020 Yes Yes 12 Emergency
Bessemer City 01-36-025 0.0000 0 0.0000 2028 Yes Yes 12 Emergency
Dallas 01-36-065 0.0000 0 0.0000 Yes 12,10 Emergency

No purchases in 2024

Water Treatment Plants
Plant Name Permitted Capacity
(MGD)		 Is Raw Water Metered? Is Finished Water Ouput Metered? Source
Gastonia WTP 27.3000 Yes Yes Mountain Island Lk (Primary) SF Catawba Riv (Sec.)
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?  No

4. Wastewater Information

Monthly Discharges
Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)
Jan 13.7400 May 11.2200 Sep 13.1900
Feb 9.2600 Jun 8.5800 Oct 9.5000
Mar 11.9700 Jul 10.1500 Nov 9.2400
Apr 8.8700 Aug 10.9200 Dec 10.1300

How many sewer connections does this system have?   32,633
How many water service connections with septic systems does this system have?   2,773
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
NC0006033 WWTP 4.0000 4.0000 0.7100 3.6300 South Fork Catawba River South Fork Catawba River (03-2)
NC0020184 WWTP 16.0000 16.0000 7.3800 20.8000 South Fork Catawba River South Fork Catawba River (03-2)
NC0040070 WTP 0.7500 1.2000 0.0000 0.0000 Unnamed Trib. to Long Creek South Fork Catawba River (03-2)
NC0074268 WWTP 6.0000 6.0000 2.4700 8.1300 Crowders Creek Catawba River (03-1)
ND0084883 WWTP 0.0000 0.0000 0.0000 0.0000 Land Application (SC) Catawba River (03-1)
WQ0001793 WWTP 0.0000 0.0000 0.0000 0.0000 Land Application (NC) Catawba River (03-1)

Land Application Permits - WQ0001793 applied 1,345 dry tons over 221 days in NC. ND0084883 applied 233 dry tons over 15 days in SC. There was no discharge to surface waters from NC0040070 in 2024. The wastewater from this facility was discharged to Long Creek WWTP for treatment and discharge.

Wastewater Interconnections
Water System PWSID Type Average Daily Amount Contract
Maximum (MGD)
MGD Days Used
Belmont 01-36-015 Receiving 0.0442 366 0.2800
Bessemer City (Abernethy Creek) 01-36-025 Receiving 0.4708 366 0.6083
Bessemer City (Oates Rd) 01-36-025 Receiving 0.3474 366 1.0000
Clover 46-10-006 Receiving 0.6500 366 0.8667
Dallas - SMV & LCA 01-36-065 Receiving 0.0558 366 0.6000
High Shoals 01-36-075 Receiving 0.0238 366 0.1000
Kings Mountain 01-23-020 Receiving 0.0288 366 1.0000
Lowell 01-36-060 Receiving 0.0378 366 0.1500
Ranlo 01-36-034 Receiving 0.2415 366 0.4000
Town of McAdenville 01-36-045 Receiving 0.1390 366 0.1800
Town of Stanley 01-36-035 Receiving 0.4222 366 1.0000

There are 2 permitted sewer connections with Bessemer City with separate contracts: Oates Rd with a contract maximum of 1 MGD and Abernethy Creek with a contract maximum of 0.6803 MGD.

We have entered into an Sewer Connection agreement with Dallas. Flow began in 2023 and the maximum AD is 0.6000 MGD.

We also separately serve a small section of Dallas called Spencer Mountain Village and Long Creek Apartments. Those areas have been combined. Previous LWSP updates only reported the Spencer Mountain Village flow.

Kings Mountain has 2 metering points with very low flows that have been combined.

Stanley has 2 metering points that have been combined.


5. Planning

Projections
  2024 2030 2040 2050 2060 2070
Year-Round Population 94,911 100,795 111,330 122,909 135,817 150,078
Seasonal Population 0 0 0 0 0 0
 
Residential 4.4849 4.7607 5.2587 5.8088 6.4163 7.0875
Commercial 2.1314 2.2625 2.4491 2.7605 3.0493 3.3683
Industrial 0.6211 0.6593 0.7282 0.8044 0.8885 0.9815
Institutional 0.8516 0.9040 0.9985 1.1030 1.2183 1.3458
System Process 5.0669 4.9669 4.7669 4.5669 4.3669 4.1669
Unaccounted-for 2.9589 3.3342 3.1675 3.0091 2.8587 2.7157

A 1.0% yearly increase (compounded annually) in water use projections is based on the projected 1.0% annual population growth in Gaston County, City of Gastonia, and Cramerton.

Demand v/s Percent of Supply
  2024 2030 2040 2050 2060 2070
Surface Water Supply 75.0000 75.0000 75.0000 75.0000 75.0000 75.0000
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 0.0000 0.0000 0.0000 0.0000 0.0000
Total Available Supply (MGD) 75.0000 75.0000 75.0000 75.0000 75.0000 75.0000
Service Area Demand 16.1148 16.8876 17.3689 18.0527 18.7980 19.6657
Sales 1.8306 4.2347 4.2347 4.2347 4.2347 4.2347
Future Sales 0.0000 0.0000 0.0000 0.0000 0.0000
Total Demand (MGD) 17.9454 21.1223 21.6036 22.2874 23.0327 23.9004
Demand as Percent of Supply 24% 28% 29% 30% 31% 32%

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 47 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?   We will continue to use an increasing block rate for residential and irrigation water use to promote conservation. We will continue to use our leak detection equipment to locate and repair leaks. We are replacing all water meters with AMI in the next 3 years.

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs?   The water supply at Mountain Island Lake will meet our needs into the future. Our current permit is for an average daily withdrawal of 75 MGD.

How does the water system intend to implement the demand management and supply planning components above?   We will continue to use an increasing block rate structure and a full cost recovery rate structure. We will continue our leak detection program and meter testing and change-out programs. We will monitor our per capita water use annually as we update the LWSP in order to work to reduce our per capita water use.

Additional Information

Has this system participated in regional water supply or water use planning?  Yes, We participate in the Catawba Wateree Water Management Group and the Catawba Wateree Drought Management Group with other water purveyors in the Catawba Wateree Basin.

What major water supply reports or studies were used for planning?  We participated in the development of the Catawba Wateree Basin Master Plan. By participating in the Water Management Advisory Group and the DMAG, we have access to reports showing the water flow information and the available water supply in the Catawba River above our intake on Mountain Island Lake. We follow the Low Flow Protocol from the DMAG to determine what level of water conservation may be needed.

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:   Protection of the water quality in our water supply on Mountain Island Lake. Funding assistance to allow further regionalization of the utility systems in Gaston County. The possible impacts of inter-basin transfer regulations on our water supplies from the Catawba River Basin and Mountain Island Lake. Adequate funding sources that support operations, capital improvements and a comprehensive long-term water supply master plan, in order to maintain and expand the water system to meet the needs of our customers and the future needs of Gaston County.

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.