LEAD Action News Volume 22 Number 2 June 2024 20 of 73
Water and Lead
You may be aware that water may contain a
number of contaminants and that the
Australian Drinking Water Guidelines* are used
by water authorities when monitoring
contaminants in drinking water.
But did you know that water you use can
become contaminated within your home?
That’s right! The level of acidity and alkalinity (“basic”)
can all play a role.
Background Information of the pH of Water
The range of pH goes from 0-14, and 7 is considered to be neutral. Lower levels of pH are acidic, whereas
higher levels are alkaline/base.
Water is often referred to as being “hard” or “soft”. Soft water is between 6-7 pH. Hard water is between
7-8 pH.
How is water with a low pH problematic when it comes to lead?
A pH below 6.5 may be corrosive (according to NSW EPA’s August 2023 report An investigation into
metals in domestic tank water around the Newmont gold mine in Cadia) which means that if your water
is even slightly acidic, lead (and other metals) could leach into the water.
Lead (and other metals) can leach out of brass taps, ball valves, pumps, lead-soldered pipes or tanks,
and lead-flashing on rainwater collection areas.
Soft water is known to leach lead (and other metals) into the water out of brass taps, ball valves, pumps,
lead-soldered pipes or tanks, and lead-flashing on rainwater collection areas.
What should you do?
Test your water for lead.
Our test Kits are an effective way to determine the level of lead in your drinking water.
You can get your Kit here: https://leadsafeworld.com/product/2-sample-lead-testing-kit/