Reliable, Cost-Effective Water and Wastewater Engineering

We are a water and wastewater engineering firm helping California municipalities, developers, and engineering partners deliver infrastructure projects faster, with efficient approvals and predictable costs.

Engineering Built for Outcomes, Not Overhead

Water and wastewater projects slip when schedules drift, designs overreach, or permitting risks are not addressed early. We engineer with California’s regulatory and delivery realities in mind.

Value Over
Hours

We do not optimize for billable hours. We structure water and wastewater work around outcomes: clear submittals, reduced rework, schedules you can defend, and systems sized for constructability and long-term operation.

Speed as a Design Constraint

In California, time to permit and time to deliver matter as much as hydraulics and code compliance. We treat schedule as a design input from day one because delays often cost more than engineering.

Deep Work, Not Meeting Culture

Our engineers are organized for focused problem solving, not constant meetings. Fewer handoffs and fewer revisions lead to cleaner packages, clearer responses, and smoother reviews.

AI as Leverage, Not a Shortcut

We use AI to reduce repetitive drafting work so our PEs can spend more time on coordination, constructability, and submittal quality. The PE owns the engineering decisions, and every deliverable is reviewed before it goes out the door.

Who We Support

We support California clients who need water and wastewater engineering expertise without large-firm overhead or slow delivery.

Municipalities and Water Districts

Small and mid-sized California communities managing aging infrastructure, discharge and water quality requirements, and capital planning cycles. We deliver clear recommendations and designs aligned with local budgets, operations, and review expectations.

Developers and Industrial Owners

Developers and industrial owners who need fast feasibility answers, realistic construction costs, and a clear path through California agency review before capital is committed. We help de-risk schedules by addressing permitting and coordination early.

Civil Engineering Firms

Civil firms that need a dependable water and wastewater partner or are facing PE bandwidth constraints. We integrate quietly with your team to produce clean deliverables, respond quickly to comments, and keep projects moving.

What We Do

We provide water and wastewater engineering services across California with a focus on constructability, clean submittals, and predictable project delivery.

Wastewater Engineering

Developing in California means dealing with tough wastewater rules. The big question: connect to the city’s system or build your own? What will it actually cost? We handle Treatment Planning, State Water Board and Regional Water Quality Control Board Permitting, Collection System Design, Lift Stations, Construction Drawings, and Hydraulic Modeling. You get real answers, actual costs, and permits that don’t drag on forever.

Water Engineering

Your project needs water, and in California, that’s not always simple. We help you pick the right path: city connection, wells, or tanks? We do Treatment Planning, DDW (Division of Drinking Water) Permitting, Distribution Design, Booster Stations, Pressure Vaults, Water Tanks, and Construction Drawings. You get quick answers and plans contractors can start building from today.

Civil Engineering

We take care of your entire site design. That means Concept Planning, Project Permitting, Construction Drawings, and Kiosk Site Planning. We line up grading, drainage, utilities, and paving so your schedule stays on track. You get plans that pass local review and contractors can use right away.

Construction Administration

When construction kicks off, we’re there making sure it goes smooth. We handle site observation, answer contractor questions, review submittals, and approve shop drawings. We spot problems before they blow your budget, respond fast, and keep change orders under control. Less hassle, fewer surprises, and work that’s done right the first time.

Get Permit Solutions, Faster Timeline And Cost Estimate

Projects

From lift stations to treatment plants, MES delivers water and wastewater engineering for CA municipalities, developers, and engineering firms - fewer revisions, faster approvals, and costs you can count on.

Taylor Water Reclamation Facility

Taylor, Williamson County, TX

completed

The Gateway Water Reclamation Facility serves a large-scale mixed-use development in San Marcos, Hays County, Texas, combining data center operations, commercial facilities, and supporting systems. A traditional 1.0 MGD discharge permit in this region would have faced significant opposition from environmental groups concerned about impacts to the San Marcos River and Edwards Aquifer recharge zone, with public hearing processes routinely extending timelines to 30 or more months. Modern Engineering Solutions pursued the TCEQ 210E authorization pathway instead, securing approval in just 10 weeks with a zero-discharge reclaimed water system that eliminated surface water discharge concerns entirely.

Gateway Water Reclamation Facility

San Marcos, Hays County, TX

completed

Bradley Business Park Water Reclamation Facility

Taylor, Williamson County, Texas

completed

The Bradley Business Park Water Reclamation Facility required a wastewater solution for a mixed-use development in Taylor, Williamson County, Texas. When Williamson County denied the septic permit due to platting issues and site constraints that made conventional on-site treatment infeasible, Modern Engineering Solutions pursued the TCEQ 210E authorization pathway. This approach bypassed county jurisdiction entirely, placing the project under state-level TCEQ oversight with a zero-discharge reclaimed water system. The 4-week approval timeline allowed the developer to maintain construction schedules and avoid costly project delays.

Trinity Retail Plaza

Texas

completed

The Trinity Retail Plaza is a meticulously designed 2-acre commercial shopping plaza that seamlessly integrates high-quality retail spaces with innovative engineering solutions. Modern Engineering Solutions provided expertise in paving, grading, utility layout, and drainage design, while addressing site-specific challenges including streambank stabilization and storm drain improvements in full compliance with local and state regulations.

Bailey Ranch Estates

Lindsay, Texas

completed

The Bailey Ranch Estates is a meticulously planned 14-acre residential development featuring 48 thoughtfully designed lots alongside a 2.5-acre future industrial site. Modern Engineering Solutions provided expertise in site planning, coordination, and infrastructure design to ensure the successful execution of this project, serving the growing community in the city of Lindsay, Texas.

Magnolia Center

Magnolia Center, Corinth, Texas

completed

The Magnolia Center is a 2.67-acre mixed-use commercial development strategically located in Corinth, Texas. The project comprises a 10,800 sq. ft. office building and a 7,316 sq. ft. retail building featuring a drive-through facility. Currently in the final stages of construction, the development exemplifies the seamless integration of diverse commercial spaces designed to cater to the evolving needs of the community.

Town of Oak Creek Infiltration and Inflow (I&I) and Water Loss Analysis

Oak Creek, CO

completed

The Town of Oak Creek faced aging water distribution and wastewater collection systems with unquantified water loss and infiltration and inflow issues. Modern Engineering Solutions conducted a comprehensive assessment of the infrastructure's age and condition, delivering a final report with clear engineering estimates and a prioritized roadmap for future system replacements and improvements.

Steamboat Mountain School Wastewater Treatment Plant

Steamboat Springs, CO

completed

The Steamboat Mountain School Wastewater Treatment Plant (WWTP) project involved the design and construction of a new 10,000-gallon-per-day treatment facility to replace an outdated plant that could no longer meet the demands of the school’s growing operations and updated discharge requirements. The new WWTP ensures compliance with strict effluent limits, including BOD of 5 mg/L, TSS of 1 mg/L, and NH₃-N below 1 mg/L. Modern Engineering Solutions (MES) led the civil design efforts, working closely with the process engineering team to recommend improvements that enhanced performance and sustainability.

Phippsburg and Milner Wastewater Treatment Plants

Phippsburg and Milner, CO

completed

The Phippsburg and Milner Wastewater Treatment Plants (WWTP) project involved the design and construction of two new treatment facilities to replace outdated infrastructure that could no longer meet the growing demands and discharge requirements of the communities they serve. With capacities of 32,500 gallons per day and 30,000 gallons per day respectively, the new WWTPs were designed to ensure compliance with strict effluent limits, including BOD of 5 mg/L, TSS of 1 mg/L, and NH₃-N of 50 mg/L. Modern Engineering Solutions (MES) led the civil design efforts, collaborating with process engineers to enhance the plants' performance and sustainability.

Town of Yampa Wastewater Treatment Plant

Yampa, CO

completed

The Town of Yampa Wastewater Treatment Plant (WWTP) project involved the design and construction of a new 105,000-gallon-per-day treatment facility to replace an outdated plant that no longer met the town’s wastewater needs or regulatory discharge requirements. The new WWTP ensures compliance with strict effluent limits, including BOD levels below 5 mg/L, TSS below 1 mg/L, and TIN below 21 mg/L, supporting sustainable growth and environmental stewardship. Modern Engineering Solutions (MES) led the civil design efforts, working closely with the process team to optimize system performance through strategic process recommendations.

Riverdance RV Park Wastewater Treatment Plant

Gypsum, CO

completed

The Riverdance RV Park Wastewater Treatment Plant (WWTP) project involved the design and construction of a new 40,000-gallon-per-day treatment plant to replace an outdated system that could no longer meet the growing demands and discharge requirements of the expanding RV park. The new WWTP was engineered to handle increased wastewater flows while ensuring compliance with strict effluent limits, including BOD of 5 mg/L, TSS of 1 mg/L, and Total Inorganic Nitrogen (TIN) of 80 mg/L. Modern Engineering Solutions (MES) led the civil design effort, collaborating with the process engineering team to recommend adjustments that optimized system performance.

Town of Yampa Collection System Improvements

Yampa, CO

completed

The Town of Yampa Collection System Improvements project focused on the rehabilitation of 20,000 feet of wastewater collection pipelines and upgrades to the community’s manholes. These improvements were designed to enhance the system’s reliability and reduce future maintenance needs. Modern Engineering Solutions (MES) took the lead on the project, working closely with local officials to develop effective engineering solutions and secure funding to support the town’s infrastructure goals.

Phippsburg and Milner Collection System Improvements

Phippsburg & Milner, CO

completed

The Phippsburg and Milner Collection System Improvements project focused on enhancing essential wastewater infrastructure for both communities. The project involved the rehabilitation of 20,000 feet of aging collection pipelines and the lining and improvement of multiple manholes to ensure long-term durability and performance. These upgrades are critical to maintaining reliable wastewater service and reducing maintenance needs in the future. Modern Engineering Solutions (MES) led the design effort, providing technical expertise and support throughout the project lifecycle.

Florissant, Colorado Lift Station and Collection Design

Florissant, CO

completed

The Florissant Lift Station and Collection System project focused on modernizing critical wastewater infrastructure for the community. This project involved the design of a new influent lift station with a capacity of 57,000 gallons per day and the rehabilitation of 35,000 feet of the existing collection system. These improvements are essential for maintaining reliable wastewater service and supporting future growth in the area. Modern Engineering Solutions (MES) led the design effort, ensuring the project met regulatory standards and aligned with funding requirements.

City Limits RV Park Lift Station

Milford, TX

completed

The City Limits RV Park Lift Station project was developed to support the wastewater needs of a growing RV park in Milford, TX. The lift station, with a capacity of 15,000 gallons per day, was designed to handle all three phases of the RV park’s development, ensuring long-term wastewater management and smooth operation for the facility. Modern Engineering Solutions (MES) played a key role in coordinating between stakeholders and developing engineering solutions to align with regulatory standards and local requirements.

Sasakwa Water Tank Improvements

Sasakwa, OK

completed

The Sasakwa Water Tank Improvements project addressed the challenges posed by an aging water storage tank in Sasakwa, Oklahoma. The tank had deteriorated significantly, with structural wear and coating breakdown that compromised its reliability and long-term capacity. Modern Engineering Solutions partnered with town officials to assess the tank's condition and develop a comprehensive engineering plan outlining the full scope of repairs needed. MES also supported the town's grant funding efforts by preparing a detailed engineering report documenting the tank's condition, repair requirements, and projected costs. Once funding was secured, MES prepared technical specifications for recoating and structural repairs, ensuring all work met industry standards and extended the tank's operational lifespan.

Bitter Creek Distribution Improvements

Sweetwater, TX

completed

The Bitter Creek Distribution Improvements project involves the relocation of four miles of waterlines to accommodate TxDOT improvements along the IH-20 corridor. This project ensures uninterrupted water service while supporting the infrastructure upgrades necessary for regional transportation improvements. Modern Engineering Solutions (MES) collaborated closely with stakeholders to provide on-site engineering expertise, ensuring a smooth construction process for Bitter Creek staff and seamless integration with the TxDOT project.

River Valley Wastewater Treatment Plant

Martindale, Caldwell County, Texas

completed

Discharge permits in Caldwell County near the San Marcos River watershed face intense scrutiny from regional water authorities and environmental advocacy groups. Public hearings attended by Modern Engineering Solutions staff for neighboring discharge permit applications revealed highly contentious 30+ month permitting timelines. The 210E pathway bypassed this opposition entirely, securing approval in just 4 weeks by demonstrating beneficial agricultural reuse. The project’s 2.0 MGD scale, one of the largest 210E authorizations issued to date for MES, proves that flow volume does not limit 210E applicability when industrial components and viable reuse plans are present. The off-site reuse agreement with Circle G Livestock provides long-term disposal certainty while supporting local agricultural operations.

Morrison Creek Metropolitan Water & Sanitation District Treatment Improvement

Routt County, CO

completed

MES contributed civil design services to the construction of a new 0.35 MGD wastewater treatment plant for Morrison Creek Metropolitan District. The scope covered grading, utility coordination, paving, stormwater drainage design, cut/fill calculations, and on-site construction observation, ensuring the facility was built to spec and ready for long-term reliable operation.

Arabian Acres Metropolitan District Distribution System Improvement

Teller County, CO

completed

The Arabian Acres Metropolitan District serves a disadvantaged community in Teller County, Colorado that needed significant improvements to both its water treatment and distribution infrastructure. The client qualified for SRF Loans and Grants, and Modern Engineering Solutions delivered two connected projects to address the community's water system needs from treatment through distribution.

Prairie Corner Wastewater Lift Station

Brighton, CO

completed

The Prairie Corner Wastewater Lift Station project in Brighton, Colorado required a full-service engineering approach covering site design, overflow piping, hydraulic calculations, and regulatory coordination. Modern Engineering Solutions contributed as a subconsultant, delivering technical expertise across multiple disciplines to ensure the lift station was designed, permitted, and built to serve the community reliably.

Last Dollar PUD HOA Wastewater Treatment Improvement

San Miguel County, CO

completed

Modern Engineering Solutions is proud to have played a significant role as a subconsultant in the Last Dollar PUD HOA Wastewater Treatment Improvement Project. This crucial initiative aimed at enhancing wastewater treatment facilities for the community, ensuring compliance with environmental regulations and improving overall quality of life. Our team contributed its expertise in site design, utility layout, and preparation of mechanical and process drawings to ensure the project's success.

Belmar Library Grading

555 S Allison Pkwy, Lakewood, CO

completed

The Belmar Library Outdoor Learning Area Expansion is a 0.05-acre civil engineering project completed for Jefferson County Public Library in Colorado. Modern Engineering Solutions was tasked with designing the grading and civil systems associated with the new outdoor learning area. The space opened in Summer 2022 and now serves as a safe, functional environment for children and families in the community.

1711 Single Family Homes

1711 Ingalls St, Lakewood, CO

in_progress

The 1711 Single Family Homes project is a 0.75-acre residential development comprising six single-family homes in Colorado. The site presented real engineering challenges: a historically subdivided lot with tight spacing between homes, stormwater management requirements, and strict CDPHE utility line separation standards. Modern Engineering Solutions handled the full civil scope from paving and grading through utility coordination, delivering a functional and code-compliant development currently completing construction.

Blog/Newsletter

Ground-level wide shot of a Texas water main hydrostatic pressure test in progress showing a pressurized pipeline test section with pressure gauges visible at the end cap connections and test water flowing into a designated disposal area representing the discharge planning that Modern Engineering Solutions builds into Texas construction project specifications

Hydrostatic Test Water: What Texas Developers and Contractors Need to Know Before Discharge

Michael Groselle

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July 8, 2026

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Land Development, Civil Engineering, Discharge Permit, TCEQ, Water and Wastewater Engineering

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No Comments

The water that filled your pipeline during pressure testing does not have the same regulatory status as rain falling off a roof. Before it leaves the site, someone needs to have answered the question of where it is going and under what authorization it is being discharged. Most …

Private Wastewater Treatment Plants in Texas: When Developers Need Their Own TPDES Permit

Michael GroselleJuly 8, 2026

Texas has over 771 active domestic wastewater permits for privately owned treatment systems. That number exists because Texas keeps growing into land that municipal sewer...

Texas Wastewater Pretreatment Permits: What Industrial Facilities Discharging to a POTW Must Know

Michael GroselleJuly 7, 2026

Signing a lease near city sewer service and assuming the wastewater problem is solved is one of the most common and most expensive mistakes industrial...

Texas Land Application Permits Explained: Spray Irrigation, Subsurface Drip, and Evaporation Ponds

Michael GroselleJuly 7, 2026

Not every Texas site has a creek nearby. Not every project can support a receiving water analysis. And not every developer wants to spend 24...

Sewage Sludge and Biosolids Land Application Permits in Texas: Rules, Fees, and Common Mistakes

Michael GroselleJuly 7, 2026

Most municipal wastewater treatment plant operators in Texas have a solid handle on their discharge limits, effluent sampling schedules, and monthly reporting to TCEQ. The...

Clear Direction

We help you make the next decision with confidence. The work stays focused on what matters, with clear recommendations and no unnecessary “extra” deliverables.

Cost-Effective Systems

We design to meet requirements without overbuilding. That means solutions that are practical to construct and straightforward to operate and maintain.

Predictable Timelines

We coordinate early and keep submittals clear so reviews do not get stuck in avoidable back-and-forth. The goal is fewer revisions and fewer surprises.

Senior-Level Partnership

You work directly with experienced engineers who communicate clearly, stay accountable, and respect your budget, schedule, and internal decision process.

Get in Touch!

Have a question about our services? Not sure if you need an engineer?

Give us a call or leave a message and we’ll contact qualified projects within few working hours!

Nine Regional Boards. One Firm That Knows All of Them

Each agency below enforces different standards depending on where your California project sits, submitting the same package across regions is how applications get rejected. We design to what each board and SWRCB actually require.

Reliable, Cost-Effective Water and Wastewater Engineering

Engineering Built for Outcomes, Not Overhead

Value OverHours

Speed as a Design Constraint

Deep Work, Not Meeting Culture

AI as Leverage, Not a Shortcut

Who We Support

Municipalities and Water Districts

Developers and Industrial Owners

Civil Engineering Firms

What We Do

Wastewater Engineering

Water Engineering

Civil Engineering

Construction Administration

Get Permit Solutions, Faster Timeline And Cost Estimate