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Terms for subject Water supply (200 entries)

O & M program	operation and maintenance program
out of order	o.o.o.
O.P.	osmotic pressure
OCSLA	Outer Continental Shelf Act
OIT	odor intensity index unit
Office of Air and Waste Management	OAWM
Office of Monitoring and Technical Support	OMTS
Office of Water Research and Technology	OWRT
Offshore Pollution Liability Agreement	OPOL agreement
OIT	odor intensity index unit
O & M program	operation and maintenance program
Operational Hydrology Program	OHP
ORP	oxidation reduction potential
O.P.	osmotic pressure
out of order	o.o.o.
ORP	oxidation reduction potential
pressure safety valve	p.s.v.
pick-up pump	p.u.p.
permanganate value	p.v.
PAC	polyaluminum chloride