GRAFTON WWTP
8 Main Street #A, South Grafton, MA 01560
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discharges into:  Blackstone River
NPDES# MA0101311
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Monitoring data 2000/2001

monitoring period end date 50050              quantity  MGD   (average) flow 00600  concentration mg/l (maximum)        nitrogen total (as N) 00610  concentration  mg/l (maximum) ammonia total (as N) 00615  concentration) mg/l (maximum)    nitrite total (as N) 00620 concentration  mg/l (maximum)   nitrate total (as N) 00630  concentration  mg/l (maximum) nitrite plus nitrate total (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 1.44 1.35 -0.09                              
February 1.54 1.50 -0.04                              
March 2.04 2.52 0.48                              
April 2.29 2.75 0.46                              
May 1.84 1.50 -0.34                              
June 1.85 1.62 -0.23                              
July 1.34 1.35 0.01                              
August 1.26 1.34 0.08                              
September 1.25 1.30 0.05                              
October 1.22 1.21 -0.01                              
November 1.33 1.18 -0.15                              
December 1.56 1.23 -0.33                              
Average change   -0.01                              

There are no calculations available for Grafton WWTF as maximum concentrations were not reported.