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41 Years
experience
Emergency
services
Your Trusted Partner for Environmental Services Solutions
P & H Senesac has been a leader in environmental services since 1985, pioneering mobile centrifuge dewatering technology long before it became industry standard. Our team combines decades of hands-on experience with cutting-edge systems like The Maximus and Spartan mobile units to deliver rapid-response solutions for municipal and industrial clients nationwide. We specialize in sludge removal, lagoon cleaning, and tank dewatering while maintaining full compliance with environmental regulations through our digitally monitored processes. Our commitment to innovation is matched by our dedication to client service, offering equipment rentals, staff training, and 24/7 emergency deployment capabilities. With a proven track record across diverse sectors including water treatment plants, food processing facilities, and semiconductor manufacturers, we provide tailored solutions that reduce waste volume and operational costs.

Our Vermont-based operations have expanded to serve clients across the United States, maintaining the same technical expertise and rapid mobilization that defined our early years. We measure success through our clients' ability to meet environmental compliance goals while achieving significant cost savings through our efficient dewatering processes. This combination of technological leadership, nationwide reach, and personalized service has made us a trusted partner for over 35 years.
Services
Wastewater Treatment Dewatering Services Sludge Removal Lagoon Cleaning Digester Cleaning Mobile Centrifuge Systems Tank Dewatering Pond Dredging Emergency Cleanup Equipment Rentals
Details
  • Year established: 1985
Highlights and features
  • We have over 35 years of specialized experience in dewatering technology
  • Our proprietary mobile centrifuge systems enable rapid deployment nationwide
  • We maintain full compliance with all current environmental regulations
  • We offer 24/7 emergency response capabilities for urgent needs
  • We provide both equipment rentals and full-service dewatering solutions
What people say
Terrific response and service Hardworking and dedicated Pioneers in the field Mission-critical reliability Cost-effective solutions
Services
Wastewater Treatment
Our wastewater treatment services utilize advanced centrifuge technology to separate solids from liquids efficiently. We handle biosolids, lime sludge, and industrial waste streams while maintaining full environmental compliance. Our mobile systems reduce transportation costs by processing waste at the source.
Dewatering Services
We provide comprehensive dewatering solutions using proprietary mobile systems that reduce sludge volume by up to 6,000 dry lbs/hr. Our technology minimizes setup time while producing cleaner effluent and drier cake solids for easier disposal.
Lagoon Cleaning
Our lagoon cleaning services address municipal and industrial wastewater storage facilities using specialized pumping and dredging equipment. We remove accumulated sludge while maintaining operational continuity and environmental compliance for various lagoon types.
Digester Cleaning
We restore digester efficiency through complete cleaning of organic and non-organic solids buildup. Our team provides confined-space entry, flushing, and pumping services to maintain optimal biogas system performance.
Emergency Cleanup
Our 24/7 emergency services deploy mobile centrifuge units within hours for flood response and sewage backups. We provide rapid dewatering solutions for natural disasters and industrial accidents with self-contained, immediately operational equipment.
People
Paul Senesac
Founder
Co-founder with over 35 years of experience in dewatering technology, Paul pioneered mobile centrifuge applications before they became industry standard. He continues to drive technological innovation while maintaining client relationships.
Helen Senesac
Founder
Co-founder instrumental in developing the company's client service philosophy. Helen established the rapid-response framework that remains central to the company's operational approach for emergency services.
Questions
What makes your dewatering systems unique?
Our proprietary mobile centrifuge systems feature digital monitoring and rapid deployment capabilities, allowing immediate operation with minimal setup time compared to conventional equipment.
Can you handle emergency wastewater situations?
Yes, we provide 24/7 emergency response with pre-deployed mobile units ready for immediate operation at any location across the United States.
Do you offer equipment rentals?
We provide flexible rental options for both short-term and long-term projects, including operator training and full-service support packages.
Are your services environmentally compliant?
Our processes meet or exceed all federal, state, and local environmental regulations through continuous digital monitoring and reporting systems.
What industries do you serve?
We work with municipal wastewater plants, food processing facilities, semiconductor manufacturers, and construction companies for diverse dewatering needs.