What can go wrong with our water before it reaches us?*
The US has the safest drinking water in the world. But, with a vast distribution system, the potential for harmful contamination is very real:

  • Contaminants may be present despite treatment:
    • Endocrine disruptors
    • Pharmaceuticals
    • Disinfection byproducts (DBP’s)
    • Pesticides and herbicides
  • Post-treatment potential points of contamination:
    • Biofilms
    • Repairs and replacements
    • Cross connections with waste
    • Power outages and leaks/line breaks (negative pressure points)
    • Corrosion
    • Leaching from pipe walls, etc.

How can we focus on improving the water quality that people consume cost efficiently?
Utilize a point-of-use system technology (POU) with quality filtration. POU systems are also known as the final barrier prior to the water being consumed.

What is the difference between MCLG (Maximum Contaminant Level Goal) and MCL (Maximum Contaminate Level)?**
The goal is to get to the ‘G’. MCLG is usually the starting point for determining the regulated MCL. The goal is a water purity level at which the health community believes “no known or anticipated adverse effects on human health occur.” It is a high standard. A separate goal is set for each contaminant that is regulated.

On the other hand, the MCL, the enforceable standard, takes into account the cost and practicality of treatment – which means a “permissible” amount of contamination, is allowed. It is a compromise, getting as close to the goal while also considering what is feasible.

What are some of the common standards for certified POU technologies?
Certified products are tested to ANSI/NSF (American National Standards Institute/National Sanitation Foundation) standards.
42 – Filter aesthetic contaminant performance evaluation
44 – Softener contaminant performance evaluation
53 – Filter health contaminant performance evaluation
55 – Ultraviolet contaminant performance evaluation
58 – RO (Reverse Osmosis) contaminant performance evaluation
62 – Distiller contaminant performance evaluation

*Water Quality Association – www.wqa.org ** US Environmental Protection Agency – www.epa.gov