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Table of Contents

Static Pages

• Water Treatment Services 
  • Boiler Water Treatment 
  • Building Water Safety 
    • Thank You 
  • Analytical Testing Laboratory 
  • Cooling Water Treatment 
  • Analytical Laboratory 
  • Water Treatment Education Program 
  • Wastewater Treatment Solutions 
  • Reverse Osmosis 
• Branding Guide 2 
• Branding Guide 
• Articles 
  • Meet Rose Lagrimas 
  • Meet Sean Robbins 
  • Meet Jeff Jahns 
  • Meet Kelle Zeiher 
• Covid 
  • COVID-19 Update 
• Sales 
  • Wastewater Treatment Solutions 
  • 6 Mistakes 
  • Sanitizer Formula 3110 
    • Thank You 
• Water Treatment Equipment & Innovation 
  • G-C LumiTrac 
    • LumiTrac High Cycle Water Conservation Program 
  • G-C SolidTrac 
  • Digital Water Management System 
  • G-C Controlled Release 
  • ClO2 Generators 
  • G-C ChemFeed 
• Industries Served 
  • Healthcare 
    • Medical Device Water Treatment 
  • Hospitality 
  • Data Centers 
  • Commercial Properties 
  • Food & Beverage 
  • Government 
  • Manufacturing 
• Problems Solved 
  • Risk Minimization of Legionella & Other Waterborne Pathogens 
  • PFAS & PFOS Removal 
  • Savings & Sustainability 
  • Green Chemistry 
  • Safer Chemical Cleaning 
  • Bioaugmentation for Water Treatment 
  • Secondary Disinfection 
• Resources 
  • ASHRAE Standard 188 - 2018 
  • SDS Document Results 
  • Water Safety Management Tips 
    • Your Water Safety Management Tips Guide Download 
  • Safety Data Sheets 
    • Thank You - Request SDS Documentation 
• Careers 
  • EEO Commitment 
  • Culture 
  • Personal Stories of Inspiration 
  • Working At G-C 
  • Information for New Hires 
• Schedule A Consult 
• Contact 
  • Customer Survey 
  • Billing Inquiry Request Form 
• Privacy & Terms 
• Home 
• About Us 
  • President's Message 
  • Thank You 
  • G-C Advantage 
  • Credentials & Certifications 
    • ELAP Certificate 
    • G-C ISO Certificates 
  • History & Heritage 
• Site Map 

Blog Posts

• Category: Case Studies  (18)
  • Hospital Water Treatment Program Modernized 
  • Data Center Water Quality Restored 
  • Saving A Northwestern Particle Board Manufacturer's Plant Operation by Solving RO Fouling Issues 
  • Empowering Gypsum Plant Staff and Restoring Reverse Osmosis Operation Efficiencies 
  • Identifying and Resolving Reverse Osmosis Performance Issues in a Midwest Ethanol Plant 
  • Improved Boiler Efficiencies and Reduced Waste Yields Substantial Savings in Site Resources and Operational Expenses in A Lumber Company 
  • Reduction of Drain Line and Grease Traps Maintenance Costs and Odor Elimination in a High-Rise Casino Using BZ 8200-L 
  • Beverage Plant RO Case Study 
  • Reverse Osmosis 
  • Reverse Osmosis Systems Explained 
  • G-C LumiTrac® 
  • Controlled Release 
  • Fast ROI and Savings: It’s Better to Own Than to Rent Your Chemical Handling 
  • Water Treatment Programs That Work Where Other Programs Fail 
  • Printing Company Saves ,000 in the First Year After Using G-C's Expert Solution 
  • A "Big-picture" View and ROI Analysis Shows That Spending a Little More Saves a Lot More 
  • Texas College Learns a Valuable Lesson About the True Cost of Water Treatment 
  • Garratt-Callahan Helps a Hospital Save More Than ,000 
• Category: Water Safety  (7)
  • Are You Compliant with AAMI’s New ST108 Standards? 
  • Keeping Industrial Boilers Clean 
  • Why Water Safety Is More Than Testing And Chemicals 
  • How Organic Deposits Affect Cooling Tower Operation: The Answer To Low Efficiency 
  • Prevalence and Prevention of Legionnaires Disease 
  • Emergency Water Supply Planning 
  • Biofilms, Bacterial Microbes & COVID-19 
• Category: Reverse Osmosis  (6)
  • Saving A Northwestern Particle Board Manufacturer's Plant Operation by Solving RO Fouling Issues 
  • Empowering Gypsum Plant Staff and Restoring Reverse Osmosis Operation Efficiencies 
  • Identifying and Resolving Reverse Osmosis Performance Issues in a Midwest Ethanol Plant 
  • Beverage Plant RO Case Study 
  • Reverse Osmosis 
  • Reverse Osmosis Systems Explained 
• Category: Wastewater Solutions  (6)
  • Data Center Water Quality Restored 
  • The Global Impact of Drought Conditions on Business 
  • Reduction of Drain Line and Grease Traps Maintenance Costs and Odor Elimination in a High-Rise Casino Using BZ 8200-L 
  • BioLargo & Garratt-Callahan Partnership 
  • Wastewater Testing: Testing identifies fragments of RNA from SARS CoV-2 
  • Fast ROI and Savings: It’s Better to Own Than to Rent Your Chemical Handling 
• Category: News  (12)
  • APIC 2026 Annual Conference 
  • 2026 CSHE Annual Institute 
  • 2026 Healthcare Facilities Innovation Conference 
  • Data Center World 2026 
  • 2024 Reno Facilities Expo 
  • 2024 ASHE Conference 
  • Lead the Wave to Groundwater Sustainability 
  • Water Scarcity & Water Treatment: Expert Interview 
  • Navigating New Waters 
  • 2023 ASHE Annual Conference 
  • BioLargo & Garratt-Callahan Partnership 
  • 2021 ASHE Annual Conference 
• Category: Cooling Water Treatment  (4)
  • Data Center Cooling Options and Water Quality Management 
  • Controlled Release 
  • A "Big-picture" View and ROI Analysis Shows That Spending a Little More Saves a Lot More 
  • Texas College Learns a Valuable Lesson About the True Cost of Water Treatment 
• Category: G-C Equipment & Technologies  (1)
  • Do You Enjoy Triple Rinsing?