MMC |

Complex Infrastructure. Proven Execution.

History

Built to perform in high-consequence environments.

Founded in 1969 and family-owned to this day, MMC has grown from modest industrial and mechanical installations into one of Southern Nevada's largest and most capable general contractors. The company's early work included small industrial jobs and mechanical installations associated with pipeline work, and its backlog has grown to include major water and wastewater facilities along with work supporting airport and freeway construction needs.

Over five decades, the company has delivered more than $1 billion in water, wastewater, and critical infrastructure projects for agencies including the Southern Nevada Water Authority (SNWA), Las Vegas Valley Water District (LVVWD), Clark County Water Reclamation District (CCWRD), and the City of Las Vegas.

Originally incorporated as Major Mechanical Contractors, Inc., MMC evolved into a general contractor with civil, structural, and process mechanical capabilities, and the company began doing business officially under the MMC acronym as its scope expanded.

Today, MMC's niche remains clear: work that demands careful sequencing, quality execution, and coordination across disciplines. The company self-performs a majority of its construction scope, maintaining a crew of long-tenured foremen, journeymen, and operators who have spent their careers building the water systems that serve their own communities. This direct control over field production drives accountability, tighter sequencing, and faster issue resolution-especially on live-facility work where unplanned disruptions are not acceptable.

MMC is part of the New-Com family of companies headquartered in Las Vegas. The company pursues both traditional and alternative delivery methods, including Design-Build and Construction Management at Risk (CMAR), and has delivered, and continues to deliver, landmark projects such as the $75M River Mountain Water Treatment Facility expansion (completed four weeks early), the $47.5M Lincoln Lift Station, the $46M Whitney Lift Station Rehabilitation, and the $30M Cougar 3090 Zone Reservoir (completed seven weeks ahead of schedule).

Core Markets

MMC's work is centered on critical infrastructure markets where performance, reliability, and coordination matter most.

MMC's work is organized around core markets that reflect where the company consistently delivers value: water, wastewater, structural, mechanical, commercial and rehabilitation. These markets overlap by design-because the best outcomes on critical infrastructure come from teams that understand how systems connect and how facilities operate day-to-day.

WATER: Reservoirs, pump stations, and water infrastructure requiring disciplined planning, constructability, and integrated execution.
WASTEWATER: Treatment plants and process facilities-including headworks, primary/BNR systems, and plant upgrades-where phasing and operational continuity are critical.
STRUCTURAL: Structural concrete and structural modifications that support basins, vaults, equipment foundations, and rehabilitation work.
MECHANICAL: Mechanical piping, process equipment installation, and system integration in constrained, active facility environments.
COMMERCIAL: Commercial construction including building construction and finish work for institutional and public facilities.
REHABILITATION: Facility and pipeline rehabilitation supported by trenchless methods, condition assessment, bypass planning, and live-system coordination.

Why MMC

Local. Accountable. Proven.

LOCAL DECISION-MAKING: Leadership and field execution are coordinated locally for faster issue resolution and tighter alignment.
SELF-PERFORM STRENGTH: Greater control over the work that drives schedule and quality.
SAFETY-LED PLANNING: Safety embedded in planning and daily execution.
LIVE-FACILITY DISCIPLINE: Sequencing, cutovers, and operational coordination prioritized for stable performance.

What We Do.

Water

MMC has built, expanded, and rehabilitated some of Southern Nevada's most critical water infrastructure—from raw water intake facilities to finished-water treatment, storage, pumping, and distribution. With more than $400 million in projects delivered for SNWA alone, MMC brings unmatched familiarity with the region's water systems, operational protocols, and regulatory environment.

MMC's crews self-perform the enabling work that determines success on water projects—structural concrete, process piping, equipment setting, temporary measures, and coordinated tie-ins—giving owners direct control over quality, sequencing, and schedule protection in live operating environments.

Representative capabilities:

Construction and expansion of water treatment facilities, including flocculation, filtration, disinfection, and chemical feed systems
Greenfield and rehabilitation pump stations—from neighborhood boosters to 1-billion-gallon-per-day raw water conveyance
Reinforced concrete reservoirs and clearwells with integrated disinfection and control buildings
Pipeline and lateral construction supporting regional transmission and distribution systems
Live-facility tie-ins, shutdowns, and system integration under active operating conditions

Landmark projects

River Mountain Water Treatment Facility expansion ($75M, completed four weeks early), Alfred Merritt Smith Water Treatment Facility rehabilitation programs, Cougar 3090 Zone Reservoir ($30M, completed seven weeks ahead of schedule), and the Low Lake Level Pump Station ($650M CMAR)—a 1.02 billion-gallon-per-day raw water conveyance system with thirty-four submersible vertical turbine pumps set 417 feet below the well pad.

Wastewater

MMC is one of Southern Nevada's most experienced wastewater construction firms, with more than $200 million in City of Las Vegas projects alone—including over $160 million at the Water Pollution Control Facility (WPCF). MMC's teams have worked inside active treatment plants for decades, building a practical understanding of plant operating rhythms, access and security requirements, and the real-world constraints that only come from repeat experience inside these facilities.

MMC routinely self-performs selective demolition, structural concrete modifications, piping and tie-ins, equipment setting, and coordinated cutovers—the enabling scopes that determine whether a rehabilitation project maintains operations or creates risk.

Representative capabilities:

Headworks construction and rehabilitation: bar screens, grit systems, influent channels, and odor control
Primary and secondary treatment system upgrades: clarifiers, BNR facilities, aeration and blower systems
Solids handling and digester rehabilitation, including condition assessment and structural repair
Chemical feed facility construction and integration
Complete plant expansions delivered under phased, live-facility conditions
Extended bypass operations, including sustained pumping at 20+ MGD for over a year without operational issues

Landmark projects: City of Henderson Water Reclamation Facility Expansion ($75M), CCWRD Solids Dewatering Facility ($127M), CCWRD Central Plant South Secondary Facilities ($102M), CCWRD Dual Media Filters Phases 3 and 4 ($96M CMAR), Whitney Lift Station Rehabilitation ($46M CMAR), and more than a dozen contracts at the City of Las Vegas WPCF—including headworks/digester rehabilitation, BNR upgrades, and the Filtration Building improvements.

Structural

MMC's structural capabilities are the foundation of its infrastructure work—literally and figuratively. From mass concrete placements for reservoirs and basins to precision structural modifications inside operating treatment plants, MMC's in-house crews deliver the structural scope that most contractors subcontract, giving owners a single point of accountability for the work that drives schedule and quality.

MMC's crews have designed custom gang forms for radius walls, pre-fabricated rebar cages to accelerate installation sequences, and re-engineered shoring plans to reduce pour counts—innovations that consistently gain schedule time without sacrificing quality.

Representative capabilities:

Cast-in-place concrete for water-bearing structures: reservoirs, clarifiers, filters, flocculation basins, equalization basins, wet wells, aeration basins, and flow diversion channels
Structural rehabilitation including concrete repair, rebar replacement, and protective coatings and linings in corrosive wastewater environments
Equipment foundations, vaults, and support structures for process mechanical and electrical systems
Shoring, tunneling, and mass excavation for below-grade infrastructure
Custom formwork design, pre-fabricated rebar assemblies, and re-engineered pour sequences to accelerate schedules

Landmark projects: Cougar 3090 Zone Reservoir (two 5-million-gallon buried concrete reservoirs), City of Henderson WRF Expansion ($75M), WPCF Digester Condition Assessment and Rehabilitation (elevated deck and roof concrete/rebar repairs across all eight digesters while maintaining live operations), and the CCWRD Desert Breeze Water Resource Center ($29M).

Mechanical

MMC’s process mechanical capability is among its strongest competitive advantages. Rather than relying on mechanical subcontractors for the work that most directly affects plant operations, MMC self-performs process piping, equipment installation, tie-ins, and system integration with long-tenured crews who understand the precision and sequencing discipline that live-facility work demands.

On the FWRC M&O Chemical Facility, MMC installed and integrated 19 new chemical pumps and 19 new VFDs, coordinating both piping and electrical/controls cutovers with defined hold points and verified return-to-service—all while keeping five separate existing chemical areas fully operational.

Representative capabilities:

Installation and integration of pumps, motors, and variable frequency drives (VFDs) across treatment, conveyance, and distribution systems
Process piping across multiple materials: steel, screw pipe, PVC/CPVC, copper, stainless steel, and FRP
Chemical feed system construction including pumps, tanks, piping, and delivery systems
Valve and actuator installation and replacement, including large-diameter butterfly valves requiring precision crane lifts
HVAC, plumbing, and building mechanical systems
Coordinated live-system cutovers with defined hold points and verified return-to-service protocols

Landmark projects: CCWRD Solids Dewatering Facility ($127M—52 new pumps, 29 actuated valves, 4 new MCCs, and 4 new PLCs in a continuously operating facility), IPS-1 Pump and Motor Replacement ($24M) and Raw Water Expansion ($36M) for SNWA, and the RMWTF Sodium Hypochlorite System Upgrades—where new chemical generation systems were integrated into a live 300 MGD water treatment facility without any interruption to disinfection operations.

Commercial

While MMC is best known for water and wastewater infrastructure, the company is building a strong track record in commercial and institutional construction—work that exercises the same project management discipline, multi-trade coordination, and quality standards that define MMC’s approach across all markets.

Representative capabilities:

Ground-up building construction, carpentry, and finish work for institutional and public facilities
HVAC, fire suppression, plumbing, and building mechanical systems
Structural steel, masonry, and metal and TPO roofing
Full site improvements including grading, paving, fencing, and landscaping
VDC/BIM coordination and clash detection for complex multi-trade environments

Rehabilitation

Rapid response. Specialized rehabilitation. Field-proven support.

MMC provides a dedicated suite of rehabilitation and support services designed for operating environments and time-sensitive infrastructure needs. Available 24/7 for emergency responses.

MMC provides hydro-excavation, CCTV assessment, pipeline cleaning/jetting, trenchless rehabilitation, bypass support, and lift station services — along with disposal/remediation support as needed.

Hydro-excavation, CCTV & 24/7 emergency response services
CCTV condition assessment and pipeline inspection support
Pipeline jetting and cleaning
Trenchless rehabilitation: CIPP lining, point repairs, UV lining, and epoxy pipe coating
Pipe bursting and pipe replacement or rehabilitation strategies
Manhole/vault coating or lining
Bypass service setup and maintenance
Lift station pumping, cleaning, and rehabilitation
Vactor truck & tanker services; hydro-excavation & disposal
Non-hazardous waste disposal/remediation and related support services

Need rapid response or trenchless support? Contact MMC Services for availability and dispatch at X.

WPCF Headworks & Digester Rehabilitation (Contract 22)

City of Las Vegas

$30M

New headworks facility including bar screens, grit systems, odor control biofilters, standby generators, influent sewer, primary clarifiers, gravity thickeners, and sludge pump stations. Executed channel-by-channel sequencing to maintain full throughput and compliance throughout construction.

BNR Facilities (Contract 23)

City of Las Vegas

$26M -

New influent pumping and process systems, clarifiers, RAS/WAS pumping upgrades, aeration/blower control upgrades, solids handling components, and associated electrical/instrumentation/HVAC. Zero claims filed on the project.

WPCF Filtration Building Improvements

City of Las Vegas

$25M -

Rehabilitation and upgrades across pumps, motors, VFDs, instrumentation and controls (including PLC-based panels), plus building improvements completed while keeping the plant running. Field-driven Quality Management Plan with ITP hold points achieved clean acceptance without end-of-project closeout scrambling.

Whitney Lift Station Rehabilitation

Clark County Water Reclamation District

$46M CMAR

Constructability reviews, sequencing plans, and value engineering for this high-consequence wastewater conveyance upgrade. Complex systems upgrades including new pumps, advanced electrical/instrumentation, and structural modifications delivered under operational constraints. Value engineering savings without reducing performance or reliability.

River Mountain Water Treatment Facility Expansion

Southern Nevada Water Authority

$75M

Major treatment facility expansion including flocculation, filtration, disinfection, and chemical feed systems. Delivered four weeks ahead of schedule by re-sequencing mechanical work packages in coordination with design engineers.

Cougar 3090 Zone Reservoir

Las Vegas Valley Water District

$30M

Two 5-million-gallon buried concrete reservoirs with disinfection and control building, appurtenant piping, and full site improvements. Completed seven weeks ahead of schedule.

CCWRD Solids Dewatering Facility

Clark County Water Reclamation District

$127M

New solids processing facility with two 376,000-gallon sludge storage tanks, six centrifuges, cake conveyance, four 225 CY cake storage bins, and micro-tunneled pipeline crossings under the Las Vegas Wash. 52 new pumps, 29 actuated valves, 4 MCCs, and 4 PLCs installed without power interruption to the operating plant.

CNLV WRF Flow Equalization Basin

City of North Las Vegas

$21M

Equalization basin with integrated Septage Station, coordinated through global switchgear shortages requiring proactive procurement and supplier management. Integrated a $1.3M Septage Station addition without impacting schedule or cost.

City of Henderson WRF Expansion

City of Henderson

$75M

Full water reclamation facility expansion involving structural, mechanical, electrical, and process systems across a live operating plant. Multi-disciplinary integration delivered on time and within budget.