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About Our Water System


As a regional wholesale provider of potable water, North
Texas Municipal Water District (NTMWD) is committed to
meeting the current and future water supply needs of its
Member Cities and Customers. Water rates are set at cost,
no profits are included, and no taxes are collected.


The population served by the NTMWD currently stands at
over 1.6 million people and is expected to more than double
by 2070 to 3.7 million residing inside the NTMWD service
area, according to the initially prepared state water plan.
NTMWD has identified additional raw water supplies to
meet the future water demands over the planning period.
These identified water management strategies are included
in the 2016 Initially Prepared Region C Water Plan
( For NTMWD, the top two
additional water supply sources that will help meet the
projected water needs through 2040 are the Trinity Main
Stem Pump Station and the Lower Bois d’Arc Creek
Reservoir project. Other identified water supply strategies
vary from a diversity of sources including: conservation and
reuse, connecting to existing water supplies, and/or
new reservoirs.


NTMWD obtains its raw water supplies from Lavon Lake,
Lake Texoma, Jim Chapman Lake, Lake Tawakoni, the
Upper Sabine Basin, Lake Bonham and reuse of treated
wastewater effluent from its Wilson Creek Regional
Wastewater Treatment Plant, and the East Fork Raw Water
Supply Project


During the 2011 to 2015 North Texas drought, NTMWD was
unable to use 28% of available water supply due to the
presence of an invasive species, the zebra mussel, in Lake
Texoma.  NTMWD was able to continuously supply water
throughout the extended drought despite the loss of this
major water source by implementing a multi-faceted
response plan. 


First, regional water consumption was reduced through strong cooperation with NTMWD Member Cities and Customers who successfully implemented the water resource management strategies included in their Drought Contingency and Water Emergency Response Plans.  Second, NTMWD and its Member Cities sought legislative relief from the Lacy Act which culminated in the passage of the North Texas Zebra Mussel Barrier Act of 2012. Third, the NTMWD implemented in earnest the construction of the Lake Texoma Outfall to Wylie Water Treatment Plant (WTP) Raw Water Pipeline in order to deliver Lake Texoma water directly to the Wylie Water Treatment Plant allowing any present zebra mussels to be eradicated during the treatment process.  Finally, in May 2013, NTMWD began temporarily purchasing additional raw water, up to 60 million gallons per day, from Dallas Water Utilities for a 3-year term. Reservoir levels began to slowly recover in 2014, and the Texoma pipeline project was placed into service during the summer of 2014, restoring NTMWD supply at a critical time during drought. The reservoirs finally filled to full conservation pool levels in 2015, a year when several rainfall records for Texas were exceeded.  In May 2015, NTMWD was able to end drought plan restrictions and transition into the NTMWD Water Conservation Plan (February 2014), allowing consumers to irrigate their lawns up to twice per week if needed.


During the 2014-2105 Water Year (August 2014 – July 2015) NTMWD treated and delivered 80 billion gallons of water, a decrease in delivery of 4% as compared to 83.6 billion gallons delivered during the 2013-2014 Water Year, with Member Cities utilizing 83% of the total supply delivered and the remaining 17% being utilized by the NTMWD Customers.


As of September 30, 2015, construction contracts for the Water System totaled over $616 million. Major projects included: the Lake Texoma Outfall to Wylie Water Treatment Plant (WTP) Raw Water Pipeline; Wylie WTPs I, II, III, and IV Ozonation; Trinity Main Stem Pump Station and Raw Water Pipeline; Wylie WTP II Clearwell and Disinfection Improvements; the NTMWD Administrative Building Structural Repairs, Building Renovations, and Building Addition, Tasks 2 and 3; the Wylie WTP Finished Water Reservoir and Flow Metering Improvements; the North McKinney Pipeline, Phases I and II; and the Lake Tawakoni WTP.


Enhancement to the water treatment process at the Wylie WTP include ozonation. With the ozonation project completed and fully operational in 2014, NTMWD now operates the largest ozonated water treatment plant in the United States.


Construction projects at the Wylie WTPs included: Wylie WTP east gate improvements and complex chemical system improvements phases 1A and 1B; Wylie WTP I conversion to biologically active filtration (BAF), improvements to existing drain, and 2.5 MGD and 3.0 MGD reservoir roof improvements; Wylie WTP II improvements to Basins 3 and 4;  Wylie WTP III filter and underdrain improvements, conversion to BAF, and lagoon improvements; Wylie WTP III variable frequency drives for washwater pumps; High Service Pump Station No. 1-1 electrical improvements; and High Service Pump Stations 2-2 and 2-3 electrical and mechanical improvements. Many of the projects are multi-year projects.


Pump Station projects included: Farmersville Pump Station No. 2; modifications to the Lake Texoma Pump Station; Shiloh Pump Station improvements; Raw Water Pump Station No. 3 expansion; Lake Lavon Raw Water Pump Station intake channel improvements; and the Lake Chapman Pump Station electrical improvements.


Additional construction projects included: North McKinney pipeline phases I and II; south delivery point improvements, priority No. 2; 42-inch and 24-inch waterline relocation along Stacy Road (FM 2786) from SH 5 (Greenville Drive) to FM 1378 (Country Club Road); Rockwall No. 2 flow meter improvements; Chapman Lake water access Task B (dredging); sludge lagoon improvements at Lake Tawakoni WTP and Bonham WTP; 121 site facility water transmission pipeline relocation at SH 121;  20” and 60” north section of FM 2514 and FM 1378; Wylie to Farmersville 36” pipeline; Plano No. 4 delivery point metering station upgrade; Supervisory Control and Data Acquisition (SCADA) System upgrades and operations; the Water System Maintenance Facilities south region, phase 1; and the Environmental Building HVAC system repairs.



Water Consumption Pie Chart
Water Consumption Bar Chart

Water System Member Cities

City of Allen
City of Farmersville
City of Forney
City of Frisco

City of Garland

City of McKinney
City of Mesquite

City of Plano

City of Princeton

City of Richardson
City of Rockwall

City of Royse City
City of Wylie


Water System Customers

Ables Springs Special Utility District

City of Bonham
Caddo Basin Special Utility District
Cash Special Utility District
College Mound Special Utility District
Copeville Special Utility District
East Fork Special Utility District

Town of Fairview

City of Fate

Forney Lake Water Supply Corporation

Gastonia-Scurry Special Utility District

Greater Texoma Utility Authority (GTUA)
City of Josephine
City of Kaufman
Kaufman Four-One

Lavon Special Utility District

Town of Little Elm

City of Lucas

City of Melissa
Milligan Water Supply Corporation
Mount Zion Water Supply Corporation

City of Murphy
Nevada Special Utility District

North Collin Water Supply Corporation
City of Parker

Town of Prosper

Rose Hill Special Utility District

City of Rowlett
City of Sachse
Seis Lagos Utility District
Town of Sunnyvale
City of Terrell
Wylie Northeast Special Utility District