A protective film at the pipe wall — the front line of Lead and Copper compliance.
Orthophosphate reacts with lead and copper at the pipe surface to form a dense, low-solubility metallic-phosphate film that keeps those metals out of the water your community drinks. It’s the corrosion-control workhorse behind decades of successful Lead and Copper Rule compliance, and for most systems it is the first chemistry evaluated when building an optimal corrosion control treatment plan.
The film is built, not switched on: a consistent residual held across months of steady feed matures into a stable barrier that survives seasonal shifts in pH, alkalinity, and temperature. Our technical team sets the target residual from your own water rather than a generic table, using jar and coupon testing on your raw and finished samples, then tracks the film’s performance through subsequent compliance monitoring periods.
Optimal corrosion control treatment engineered to hold lead below the new 10 ppb action level.
About Orthophosphates
How does orthophosphate reduce lead at the tap?
Orthophosphate reacts with lead at the pipe surface to form a dense, low-solubility lead-phosphate film. That film acts as a physical barrier between the water and the pipe wall, so lead does not dissolve into the water your community drinks.
What orthophosphate residual should we maintain?
It depends on your water. We set the target residual from jar and coupon testing on your raw and finished samples rather than a generic table, then track film performance through your compliance monitoring periods.
How long before we see lead levels drop?
The film is built, not switched on. Bench and coupon studies typically run several weeks, and a protective film needs months of consistent feed to mature in the distribution system.
Is this product NSF certified for drinking water?
Yes, it is certified to ANSI/NSF/CAN Standard 60 for drinking water treatment chemicals.
What packaging is available?
Bulk up to 4,000 gallons, 275-gallon totes, drums in 15, 30, and 55 gallons, and mini bulk on request, delivered on our own fleet.
Where do I find the safety data sheet and technical data sheet?
Both are available from our SDS library and from your Usalco technical representative. Ask for the current revision when you request a quote.
Was this product previously sold by Shannon Chemical?
Yes. Shannon Chemical Corporation is now a Usalco company, and this product continues to the same specification under the Usalco name.
