WATER QUALITY - Parameter codes for nitrogen and phosphorus in water August 17, 1971 QUALITY OF WATER BRANCH TECHNICAL MEMORANDUM NO. 72.02 Subject: WATER QUALITY - Parameter codes for nitrogen and phosphorus in water The attached tables define, by analytical method, the various parameter codes available for reporting nitrogen and phosphorus compounds in water and are intended to aid District and Project personnel in proper utilization of these sometimes confusing codes. W. H. Durum Chief, Quality of Water Branch Attachments 2 WRD Distribution: A, S, FO- L, PO