Engineering Solutions for Water & Wastewater Treatment, Stormwater Management
Pierson Enterprises, LLC, is an environmental and civil engineering consultancy specializing in water, wastewater, and stormwater systems. Founded by John Pierson, PE, F. ASCE-former Principal Research Engineer at the Georgia Tech Research Institute-it provides data-driven consulting, including decentralized system design, water quality modeling, permitting support, and advanced physical, chemical, biological, and tertiary treatment diagnostics.
John PiersonFounder / Principal Engineer
Provides comprehensive engineering design and troubleshooting for municipal, decentralized, and on-site treatment systems.
Designs and evaluates decentralized wastewater systems to optimize primary treatment and support residential developments.
Develops stormwater management strategies, retrofits, and erosion control systems for homeowners and developers.
Engineers custom lift stations and pump systems for reliable fluid conveyance.
Diagnoses and troubleshoots the impact of industrial discharges on municipal treatment plants.
Applies chemical, biological, and physical modeling to resolve complex treatment and discharge challenges.
Utilizes geochemical modeling to evaluate chemical dosing strategies and phosphorus removal compliance.
Conducts root cause inhibition analysis to resolve chronic testing failures and address laboratory QA/QC issues.
Analyzes biological treatment processes for nutrient removal and assesses recalcitrant substance inhibition.
Evaluates biological treatment systems using Specific Oxygen Uptake Rate (SOUR) testing.
Supports developers, industrial facilities, and municipalities through regulatory submittals and technology assessments.
Prepares documentation and assists clients with securing, meeting, or modifying environmental permits.
Conducts rigorous reviews of advanced water treatment technologies and commercial equipment.
Implements advanced polishing, filtration, and disinfection systems to meet strict water quality requirements.
Designs ultraviolet disinfection systems for high-performance pathogen inactivation and water reuse.
Performs dissolved air flotation (DAF) studies, media evaluations, and cyclic filtration assessments.
Wastewater · Water Supply · Stormwater & Flood Control · Industrial · Agriculture
Wastewater · Client: NClear / Creston Water Solutions
Collaborated on R&D, field evaluations, and PHREEQC modeling in partnership with Chief Scientist Dr. Curt Pollman. Later work included validating media for solids removal, hypochlorite generator performance, permitting modifications, and providing field implementation guidance.
Wastewater · Client: OnSyte Performance
Conducted initial R&D including decentralized wastewater system testing and applied process analysis, followed by ongoing consulting on system design evaluation, primary treatment optimization, and permitting support for distributed applications.
Wastewater
Conducted a custom laboratory and modeling study validating a novel calcium-silicate treatment for phosphorus removal to support compliance and commercialization.
Industrial
Performed treatment spectrum analysis of water quality and chemical additions to assist an industrial facility in resolving chronic Whole Effluent Toxicity (WET) testing failures and addressing potential laboratory QA/QC issues.