Fresh Water Test (Fresh Water Tank Test)

Do You Know What's in the Fresh Water Tank?

Ever wondered what's in the freshwater tank? Whether the vehicle you are buying is 1 year old or 20 years old, be confident that the drinking, dishwashing, and showering water is clean, safe, and non-toxic. It's unlikely the freshwater tank has ever been cleaned, so now is the chance to test it for impurities. We measure and test the following to give you comfort that what lurks in the tank won't harm you:

COD (Chemical Oxygen Demand)
Measures organic material like plant residue or bacteria—helps spot early signs of water degradation before it smells or tastes off.

UV275 (Ultraviolet Absorbance at 275 nm)
Detects chemical residues like fuel or cleaning agents—important for ensuring your water hasn’t picked up harmful compounds from hoses or tanks.

TDS (Total Dissolved Solids)
Shows how many minerals or salts are in your water—affects taste, clarity, and how well your appliances (like kettles or filters) perform.

EC (Electrical Conductivity)
Indicates how “mineral-heavy” your water is—high EC can signal excess salts that may corrode plumbing or shorten appliance life.

TOC (Total Organic Carbon)
Reveals how much organic pollution is in your tank—higher levels mean more grime or contaminants that could affect taste or safety.

Add a freshwater tank test to any of our vehicle inspections, or it's included at a discount in The Ultimate inspection check.