Municipal water can arrive perfectly treated and still reach the tap contaminated — because between the two sits a tank nobody has opened in years. Cracked covers, dead birds, biofilm and backflow turn compliant water into a health hazard, and building owners rarely know until sampling or sickness reveals it.
Why Tanks Need Engineering and Arithmetic
Safe storage is specified, not assumed: siting and waterproofing for ground tanks, materials and insulation for elevated and detached tanks, capacity calculations matched to occupancy, and correctly designed fittings. Cleaning is equally precise — chlorine solutions prepared by calculation, with different procedures for new, periodic and contaminated tanks. This guideline replaces guesswork with written specification at every step, from the first structural drawing to the final water sample taken at the tap.
What the AGS Water Tanks Guideline Covers
Twenty-one chapters and three annexes:
- Classification of tanks by location, material and use
- Ground, elevated and detached tanks — siting, construction and fittings
- Capacity calculation methods
- Cleaning procedures and chlorine dosing calculations
- Water tanker disinfection and operative health and safety
- Chlorine dosing tables and a cleaning and disinfection certificate
The annexes remove the arithmetic errors that cause most disinfection failures: chlorine dosing tables for washing solutions, tank disinfection and water tankers, a parameters quick reference, and a cleaning and disinfection certificate you can issue after every job as documented proof of compliance.
Who It Helps
Building owners and facility managers, tank cleaning companies, municipal health inspectors, and contractors installing or maintaining water storage. Cleaning companies can build their entire service offer on its procedures.
Get the Guideline
Get the Water Tanks guideline from AGS — instant digital download, fully editable Microsoft Word, ready to make the tank on your roof as safe as the source that fills it. Because it arrives as a Word document rather than a locked PDF, you can add your logo, adjust values to your jurisdiction and issue it as a controlled document within your own management system — no retyping, no reformatting.
Product: Water Tanks — available as an instant-download, fully editable package from AGS (SKU AGS-03-034).