PFAS
PFAS (per- and polyfluoroalkyl substances) contamination is rapidly becoming one of the most pressing challenges facing water utilities across Colorado and Texas. With EPA’s new drinking water standards and evolving state regulations, municipalities need experienced design engineers who understand both the technical complexities and regulatory landscape of PFAS treatment systems.
What Are PFAS and Why Do They Matter?
PFAS, often called “forever chemicals,” are a group of manufactured compounds that don’t break down naturally in the environment or human body. These substances have been used in firefighting foam, industrial processes, and consumer products for decades. Now they’re showing up in water supplies across the country, creating urgent compliance challenges for ater systems of all sizes.
The EPA’s recent Maximum Contaminant Levels (MCLs) for six PFAS compounds mean many utilities need engineered treatment solutions quickly. For small to mid-sized communities, designing these systems while managing limited budgets requires experienced engineering expertise.
Challenges in Distribution Systems
Treatment System Analysis & Design
- Review and interpretation of water quality testing data
- Technology selection based on PFAS profiles and site constraints
- Hydraulic modeling and process design calculations
- Integration planning with existing treatment infrastructure
Engineering Deliverables
- Preliminary engineering reports (PERs) for funding applications
- 30%, 60%, and 100% design plans for bidding
- Technical specifications for equipment and construction
- Operation and maintenance manuals for your staff
Regulatory & Funding Support
- Design documentation for permit applications
- Technical narratives for SRF and grant funding packages
- Compliance strategy reports for long-term planning
- Cost estimates and lifecycle analysis
Treatment Technologies We Design
Granular Activated Carbon (GAC) Systems: We design GAC contactors with optimal sizing, redundancy, and piping configurations. Our plans specify contact times, bed volumes, and vessel arrangements to maximize PFAS removal while planning for efficient media replacement. We coordinate with GAC suppliers to ensure our designs utilize the most effective media for your specific PFAS profile.
Ion Exchange (IX) Systems: For utilities seeking targeted PFAS removal, we design ion exchange systems with appropriate resin selection and vessel sizing. Our engineering plans include regeneration systems where applicable, or single-use vessel configurations based on your operational preferences.
Membrane Filtration Systems: When comprehensive treatment is required, we design reverse osmosis and nanofiltration systems with careful attention to recovery rates, concentrate management, and energy optimization. Our plans address pre-treatment requirements and post-treatment stabilization.
Why Choose MES for PFAS Design?
Design-Focused Expertise As a specialized design firm, we focus exclusively on creating detailed, construction-ready plans. We work seamlessly with your preferred contractors and equipment vendors, providing clear specifications that ensure competitive bidding and quality construction.
Multi-State Experience: Licensed in Colorado, Texas, and neighboring states, we understand varying regulatory requirements and design standards. Whether working with CDPHE or TCEQ, we ensure your plans meet all applicable standards.
Technology-Neutral Approach: We’re not tied to any equipment manufacturer or treatment vendor. Our recommendations are based solely on what works best for your water quality, budget, and operational capabilities.
Construction Support Without Conflicts: We provide bid-phase and construction-phase engineering services, answering contractor questions and reviewing submittals while maintaining our role as your advocate—not the builder.
Our PFAS Design Process
Working with Modern Engineering means getting clear, actionable plans on a predictable timeline:
- Data Review – Analyze your water quality data and site constraints
- Technology Evaluation – Present treatment options with pros/cons specific to your situation
- Preliminary Design – Develop conceptual layouts and planning-level cost estimates
- Funding Documentation – Prepare engineering reports for grant and loan applications
- Final Design – Create bid-ready construction documents
- Bidding Support – Answer contractor questions and review bids
- Construction Services – Review submittals and address field questions
Michael Groselle, PE
CEO/Founder
Ready to Design Your PFAS Solution?
Don’t let PFAS compliance uncertainty delay your capital improvements. Our engineering team is ready to design a treatment solution that meets your specific needs and timeline.
Modern Engineering Solutions is your trusted design partner for PFAS treatment systems, serving municipalities and water utilities throughout Colorado, Texas, and beyond. We deliver the engineering plans and specifications you need to move from compliance challenges to construction-ready solutions.
Contact Us
Modern Engineering Solutions is committed to helping water utilities navigate PFAS compliance challenges with proven treatment system designs that balance effectiveness, cost, and operational simplicity. If you’re facing PFAS contamination in your water supply or need to plan for upcoming regulations, contact us today. Our team is ready to assist with treatment technology evaluations, detailed engineering designs, and funding support documentation that address immediate compliance needs while providing long-term reliability.