CCPP spread function returns a water stability index (Calcium Carbonate Precipitation Potential) given a pH, Alkalinity, Calcium, and Water Temperature (Deg C) in mg/L CaCO3. CCPP is the calculated mass of calcium carbonate expected to precipitate or be dissolved by particular water. Used (along with other corrosivity indexes such as LSI) to assist in chemical dosing to ensure water in the distribution system will not corrode metal or dissolve contrete pipes.

Corrosivity State of Water	CCPP mg/L CaCO3
Scaling (protective)	>0
Passive	0 to -5
Midly Corrosive	-5 to -10
Corrosive (aggresive)	< -10

SYNTAX:

CCPP(pH, Alkalinity,Calcuim,DegC )
where :

pH: pH
Alkalinity: Alkalinity (mg/L)
Calcium: Calcium (mg/L)
DegC: Water temperature (deg C)

NOTES:

Values for pH can only be 6 to 10. Values outside that range return no result.

EXAMPLE: Calculate the CCPP at the Point of Entry

G6=CCPP(C6,D6,E6,F6)