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Attleboro WPCF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 5.50 5.00 -0.50 19.45 26.4 6.95                        
February 4.50 5.60 1.10 28.6 19.8 -8.8                        
March 5.30 7.30 2.00 16.48 20.5 4.02                        
April 6.20 6.60 0.40 13.3 10.8 -2.5                        
May 5.60 4.70 -0.90 13.7 9.8 -3.9                        
June 5.30 5.00 -0.30 15.7 4.6 -11.14 0.70 0.1 -0.6                  
July 4.60 4.10 -0.50 25.7 4.0 -21.7 0.30 0.0 -0.3                  
August 4.60 4.20 -0.40 29.9 12.4 -17.5 0.60 0.6 0                  
September 4.30 4.10 -0.20 27.4 13.1 -14.3 0.30 0.3 0                  
October 4.40 4.00 -0.40 25.1 13.2 -11.9 0.70 0.0 -0.7                  
November 4.60 4.50 -0.10 26.9 11.2 -15.7                        
December 5.00 4.60 -0.40 28.1 10.5 -17.6                        
Average change -0.02 -9.51 -0.32
Bristol WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 2.95 2.97 0.02             2.23 0.1 -2.13 3.85 6.89 3.04 6.08 6.89 0.81
February 3.15 3.96 0.81             0.10 0.05 -0.05 5.8 4.5 -1.3 5.80 4.5 -1.3
March 4.97 5.92 0.96             0.10 0.1 0 5.69 4.8 -0.89 5.69 4.8 -0.89
April 4.76 5.14 0.38             0.89 0.1 -0.79 8.21 4.6 -3.61 9.10 4.65 -4.45
May 3.61 2.60 -1.01             0.93 0.1 -0.83 7.93 6.3 -1.63 8.86 6.3 -2.56
June 2.88 3.26 0.38             0.05 0.1 0.05 9.01 5.1 -3.91 9.01 5.1 -3.91
July 2.15 2.33 0.18             0.10 0.1 0 9.3 6.4 -2.9 6.63 6.4 -0.23
August 2.22 2.49 0.27             0.73 0.1 -0.63 0.28 6.7 6.42 1.00 6.7 5.7
September 2.27 2.13 -0.14             1.01 0.05 -0.96 6.84 3.64 -3.2 7.85 3.64 -4.21
October 2.01 2.06 0.04             0.10 0.05 -0.05 7.34 3.7 -3.64 7.34 3.7 -3.64
November 2.11 1.80 -0.30             41.30 0.01 -41.29 9.96 5.62 -4.34 51.30 5.62 -45.68
December 2.87 1.93 -0.94             1.27 0.01 -1.26 9.65 3.6 -6.05 10.92 3.6 -7.32
Average change 0.05 -4.00 -1.83 -5.64
Burrillville
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 0.81 0.68 -0.13   24.6     14   0.76 1.01 0.25 5.54 11 5.46      
February 0.81 0.75 -0.06   23.1     18   1.83 0.64 -1.19 10.8 4.6 -6.2      
March 0.85 1.11 0.26 19.8 32.7 12.9 12.80 23 10.2 2.07 0.72 -1.35 3.80 6 2.2      
April 0.96 1.03 0.07 20.5 25.1 4.6 3.00 23 20 1.76 0.19 -1.57 12.80 1.4 -11.4      
May 0.88 0.73 -0.15 26.6 30.06 3.46 14.20 28 13.8 3.19 4.32 1.13 2.89 2.2 -0.69      
June 0.85 0.81 -0.04 12.5 14.9 2.4 6.60 3.6 -3 1.33 0.75 -0.58 5.68 9.8 4.12      
July 0.72 0.73 0.01 25.9 15.2 -10.7 1.70 7.1 5.4 1.95 0.51 -1.44 13.00 8.2 -4.8      
August 0.76 0.72 -0.04 16.2 9.6 -6.6 3.00 7.4 4.4 1.49 0.86 -0.63 12.00 5.5 -6.5      
September 0.80 0.65 -0.15 20.3 12.51 -7.79 3.50 8.8 5.3 5.70 1.25 -4.45 16.00 6.5 -9.5      
October 0.74 0.58 -0.16 18.5 13.8 -4.7 2.30 3.8 1.5 3.81 0.32 -3.49 14.00 8.1 -5.9      
November 0.75 0.61 -0.15 21.1 31.5 10.4 13.00 28 15 3.32 2.57 -0.75 10.00 9.6 -0.4      
December 0.80 0.64 -0.16 17.9 35.8 17.9 11 30 19 1.34 1.05 -0.29 7.00 3.7 -3.3      
Average change -0.06 2.19 9.16 -1.20 -3.08
Cranston WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 12.7 11.20 -1.50   17   13 5.6 -7.4 0.04 0.5 0.46 0.01 10.7 10.69      
February 11.6 12.00 0.40   15.5   19 4.2 -14.8 0.08 0.5 0.42 0.01 8.4 8.39      
March 11.9 16.70 4.80   14.1   14 7.2 -6.8 0.06 0.5 0.44 0.01 6.7 6.69      
April 17.0 16.60 -0.40   23.2   14 14.7 0.7 0 0.1 0.1 0 0.5 0.5      
May 13.5 12.30 -1.20   20.6   14 13.6 -0.4 0.01 1.2 1.19 0.01 6.7 6.69      
June 13.4 13.80 0.40   12.8   14 2.8 -11.2 0.05 0.8 0.75 0.01 9.2 9.19      
July 10.9 11.40 0.50 24.8 20.4 -4.4 22.7 2.5 -20.2 0.76 0.1 -0.66 7.23 8.7 1.47      
August 10.70 10.80 0.10 15.1 14.4 -0.7 3.7 0.6 -3.1 0.04 0 -0.04 8.69 10.4 1.71      
September 10.50 9.40 -1.10 18.9 16.1 -2.8 1.8 8.3 6.5 0.05 0 -0.05 11.9 7.5 -4.4      
October 10.00 9.10 -0.90   34.4   16.4 2.5 -13.9 0.18 0.1 -0.08 11 12 1      
November 10.40 7.70 -2.70 24.8 20.1 -4.7 17 12.6 -4.4 1.00 0.6 -0.4 4.9 9.6 4.7      
December 11.30 7.70 -3.60 17.2 25.4 8.2 2 20.6 18.6 0.20 0.1 -0.1 11.3 0.2 -11.1      
Average change -0.43 -0.88 -4.70 0.17 2.96
Douglas WWTP
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 0.16 0.14 -0.02                              
February 0.18 0.17 -0.01                              
March 0.23 0.29 0.06                              
April 0.24 0.28 0.03                              
May 0.19 0.15 -0.04                              
June 0.19 0.16 -0.03                              
July 0.14 0.15 0.01                              
August 0.15 0.148 0.00                              
September 0.14 0.14 0.01                              
October 0.13                                  
November 0.14                                  
December                                    
Average change 0.00
East Greenwich WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 0.83 0.96 0.13   11.4   9.8     0.714 0.2 -0.514   0.9        
February 0.78 0.96 0.18   20.1   9.9     0.712 1.06 0.348   5.5        
March 0.93 1.11 0.18   13.8   9.4     1.3 0.3 -1   9        
April 0.93 1.26 0.33   11.5           0.1     7.3        
May 0.99 1.15 0.16 4.7 10.4 5.7         0.28     6.1        
June 1.14 1.27 0.13   18.4           0.19     6        
July 1.07 1.12 0.05 10.1 9.4 -0.7       0.31 0.25 -0.06 1.7 3.8 2.1      
August 1.11 1.16 0.05 11.5 8.9 -2.6       0.78 0.35 -0.43 4.19 4.7 0.51      
September 1.12 1.05 -0.07 21.8 12.4 -9.4       0.52 0.57 0.05 4 4.3 0.3      
October 1.01 0.99 -0.02 63.8 8.8 -55       0.46 0.53 0.07 3.4 4.1 0.7      
November 1.05 0.87 -0.19 32.6 8.2 -24.4       0.39 0.42 0.03 0.7 5 4.3      
December 1.05 0.97 -0.08 14.8 12.2 -2.6       0.20 0.18 -0.02 1.1 8.4 7.3      
Average change 0.07 -12.71 -0.17 2.54
East Providence WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 6.4 6.3 -0.10       2.20 10.6 8.40 0.09 2 1.91 6 3.8 -2.20      
February 6.8 7.7 0.90       0.10 3.9 3.80 0.08 5.8 5.72 6 1 -5.00      
March 8.9 10.2 1.30       2.70 6.3 3.60 0.12 1.12 1.00 4.5 0.4 -4.10      
April 9.2 11.1 1.90       2.20 6.2 4.00 0.16 2.9 2.74 5.1 1.8 -3.30      
May 8.3 6.9 -1.40       1.20 2.4 1.20 0.05 0.35 0.30 8.4 9.8 1.40      
June 7.2 7.6 0.40       1.00 3.7 2.70 0.04 0.51 0.47 11.1 2.4 -8.70      
July 5.7 5.9 0.20       1.80 1.7 -0.10 0.11 0.3 0.19 13.5 7.3 -6.20      
August 5.5 5.4 -0.10       3.90 1.5 -2.40 0.31 0.25 -0.06 12 9.3 -2.70      
September 5.4 5.3 -0.10       3.30 2.5 -0.80 0.38 0.33 -0.05 9.3 6 -3.30      
October 5.2 4.9 -0.30       3.80 1.1 -2.70 0.21 0.03 -0.18 13.9 9.3 -4.60      
November 5.5 4.5 -1.00       3.30 2.1 -1.20 0.26 0.24 -0.02 11.2 14.6 3.40      
December 6.5 4.5 -2.00       4.2 1.4 -2.80 0.52 0.03 -0.49 5.2 12 6.80      
Average change -0.03 1.14 0.96 -2.38
Grafton WWTP
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (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
Hopedale WWTP
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 0.49 0.31 -0.18       8.14 1.98 -6.16                  
February 0.41 0.41 0.00       12.50 13.3 0.8                  
March 0.50 0.69 0.19       9.40 10.4 1                  
April 0.58 0.59 0.01       3.21 13.45 10.24                  
May 0.47 0.43 -0.04       0.40 2.85 2.45                  
June 0.50 0.53 0.03       0.62 0.23 -0.39                  
July 0.34 0.51 0.17       0.78 0.22 -0.56                  
August 0.34 0.56 0.22       0.37 0.41 0.04                  
September 0.30 0.38 0.07       0.30 0.96 0.66                  
October 0.31 0.29 -0.02       0.29 0.84 0.55                  
November 0.33 0.26 -0.07       0.28 1.55 1.27                  
December 0.35 0.26 -0.09       0.29 7.6 7.31                  
Average change 0.02 1.43
Millbury WWTP
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 0.99 1.17 0.18       17.00 21 4                  
February 1.09 1.00 -0.09       19.00 19.8 0.8                  
March 1.43 1.96 0.53       16.00 13.5 -2.5                  
April 1.96 1.92 -0.04       15.00 16 1                  
May 1.30 1.10 -0.20       15.00 17 2               0.72  
June 1.37 1.41 0.04       9.62 13 3.38               3.8  
July 0.97 1.26 0.30       16.00 10 -6               4.7  
August 1.02 1.22 0.20       12.00 11 -1               5.7  
September 1.00 1.14 0.14       12.50 13 0.5               4.8  
October 1.08 1.00 -0.07       13.00 15 2               5  
November 1.23 0.93 -0.30       17.00 17 0               4.8  
December 1.30 0.94 -0.36       19 20 1                  
Average change 0.03 0.43
North Attleboro WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 2.98 2.09 -0.89 18 4.29 -13.71                        
February 3.76 2.98 -0.78 16 9 -7                        
March 4.73 5.37 0.64 11 7 -4                        
April 4.76 3.89 -0.87 8.93 5 -3.93                        
May 3.69 1.72 -1.97 9.8 15 5.2                        
June 2.68 2.62 -0.06 11 7 -4 1.40 0.1 -1.3                  
July 1.81 1.87 0.06 6.2 23 16.8 3.80 0.1 -3.7                  
August 1.87 1.64 -0.23 9.5 12 2.5 1.15 0.2 -0.95                  
September 1.60 1.57 -0.03 11 1 -10 0.46 0.3 -0.16                  
October 1.62 1.39 -0.23 13 13 0                        
November 1.98 1.88 -0.10 14 16 2                        
December 2.89 2.78 -0.11 13 10 -3.00                        
Average change -0.38 -1.60 -1.53
NBC Bucklin Point
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 23.23 24.03 0.80       12.80 21.9 9.10 0.04 0.02 -0.02 0.14 0.01 -0.13      
February 24.86 25.38 0.52       17.40 16.5 -0.90 0.02 0.13 0.11 0.02 0.19 0.17      
March 27.28 33.85 6.57       15.80 17.7 1.90 0.01 0.142 0.13 0.01 0.22 0.21      
April 29.99 30.62 0.63       17.90 17 -0.90 0.00 0.031 0.03 929 0.02        
May 27.06 24.14 -2.92       12.60 20.7 8.10 0.03 0.006 -0.02 0.01 0.01 0.00      
June 26.33 25.6 -0.73       15.30 24.3 9.00 0.18 0.178 -0.01 0.1 0.01 -0.09      
July 21.6 21.82 0.22       16.70 15.2 -1.50 0.02 0.188 0.17 0.04 0.01 -0.03      
August 21.34 22.38 1.04       17.00 28.2 11.20 0.01 0.014 0.00 0.05 0.02 -0.03      
September 20.33 19.71 -0.62       258 24.5   0.06 0.388 0.33 1.6 0.22 -1.38      
October 20.07 18.05 -2.02       23.70 24.1 0.40 0.15 0.671 0.52 0.14 0.02 -0.12      
November 20.68 17.64 -3.04       23.50 17.6 -5.90 0.01 0.526 0.52 0.05 0.105 0.06      
December 23.04 18.58 -4.46       20.4 24.1 3.70 0.05 0.466 0.42 0.19 0.28 0.09      
Average change -0.33 3.11 0.18 -0.11
NBC Fields Point
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 41.86 42.46 0.60       8.65 13.8 5.15 0.11 0.058 -0.06 0.32 0.10 -0.22      
February 43.84 48.14 4.30       14.60 13.1 -1.50 0.06 0.054 -0.01 0.13 0.05 -0.08      
March 49.35 60.05 10.70       11.40 11.6 0.20 0.09 0.078 -0.01 0.16 0.01 -0.15      
April 53.6 55.2 1.60       9.70 13.8 4.10 0.09 0.166 0.08 3.26 1.03 -2.23      
May 49.3 44.55 -4.75       11.50 15.8 4.30 0.14 0.09 -0.05 0.29 0.10 -0.19      
June 50.07 52.92 2.85       13.00 9.98 -3.02 0.58 0.372 -0.20 0.94 0.32 -0.62      
July 42.43 43.69 1.26       9.20 10.2 1.00 0.27 0.515 0.25 1.59 0.80 -0.79      
August 43.19 46.54 3.35       12.00 10.9 -1.10 0.05 0.381 0.33 0.21 0.42 0.21      
September 42.22 39.52 -2.70       15.10 14.2 -0.90 0.23 0.086 -0.14 1.65 0.31 -1.34      
October 38.57 35.92 -2.65       15.80 16 0.20 0.29 0.328 0.04 0.08 0.73 0.65      
November 38.7 33.95 -4.75       18.80 14.2 -4.60 0.19 0.28 0.09 0.02 0.34 0.32      
December 42.27 35.24 -7.03       15.5 23.7 8.20 0.11 0.13 0.02 0.01 0.47 0.46      
Average change 0.23 1.00 0.03 -0.33
Northbridge WWTP
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 1.10 1.00 -0.10       14.80 16 1.2             1.2 1.9 0.7
February 1.20 1.20 0.00       16.90 15.1 -1.8             1.3 1.4 0.1
March 1.60 1.90 0.30       10.90 14 3.1             1.8 1.5 -0.3
April 1.70           8.90                 2.2 0.98 -1.22
May 1.40 1.10 -0.30       9.30 14.3 5             1.2 3.1 1.9
June 1.40 1.20 -0.20       11.10 11.4 0.3             2.2 5.4 3.2
July 0.90 1.00 0.10       14.20 8.89 -5.31             0.84 4 3.16
August 0.90 0.80 -0.10       14.10 13.5 -0.6             5.1 0 -5.1
September 0.90 0.80 -0.10       18.00 16.8 -1.2             0.71 1.9 1.19
October 0.90 0.80 -0.10       16.40 17.9 1.5             3.2 9.8 6.6
November 1.00 0.70 -0.30       17.30 19.2 1.9             2.5 2.9 0.4
December 0.70 0.80 0.10       16 22.4 6.4             2.2 8 5.8
Average change -0.06 0.95 1.37
Smithfield Sewer
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 1.80 1.70 -0.10       16.5 24.9 8.40 0.03 0.2 0.17 0.03 0.02 -0.01   0.22  
February 2.00 2.00 0.00       15.9 21.2 5.30 0.03 0.09 0.06 0.07 0.01 -0.06   0.1  
March 2.20 2.70 0.50       16.50 22.2 5.7 0.04 0.08 0.04 0.01 0.08 0.07 0.05 0.16 0.11
April 2.40 2.70 0.30       14.30 20.7 6.4 0.03 0.08 0.05 0.13 0.07 -0.06 0.16 0.15 -0.01
May 2.00 1.70 -0.30       17.40 22.8 5.4 0.49 0.26 -0.23 0.42 0.19 -0.23 0.91 0.45 -0.46
June 1.90 2.00 0.10       17.20 19.9 2.7 0.04 0.12 0.08 0.59 0.07 -0.52 0.63 0.19 -0.44
July 1.50 1.60 0.10       25.00 22.2 -2.8 0.07 1.01 0.94 0.54 0.34 -0.2 0.58 1.35 0.77
August 1.60 1.60 0.00         11.5   0.19 1.18 0.99 0.86 1.74 0.88 1.05 2.92 1.87
September 1.63 1.60 -0.02         17.9   0.39 0.38 -0.01 3.09 0.14 -2.95 3.48 0.52 -2.96
October 1.60 1.60 0.00       23.50 23.3 -0.2 0.36 0.76 0.4 0.62 0.36 -0.26 0.98 1.12 0.14
November 1.70 1.60 -0.10       22.80 11 -11.8 0.15 0.82 0.67 0.03 0.14 0.11 0.18 0.96 0.78
December 1.80 1.60 -0.20       21.8 16.1 -5.70 0.25 0.75 0.5 0.02 0.85 0.83 0.27 1.6 1.33
Average change 0.02 1.34 0.31 -0.20 0.11
Upper Blackstone WPAD
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 34.00 29.30 -4.70       12.80 12.9 0.1             1.7 1.6 -0.1
February 38.20 36.00 -2.20       13.70 14.6 0.9             1.8 0.68 -1.12
March 48.70 54.50 5.80       8.30 13.9 5.6             1.9 2.2 0.3
April 51.80 57.00 5.20       12.10 15.1 3             1.1 0.7 -0.4
May 43.10 33.10 -10.00       11.00 17.2 6.2             1 1.3 0.3
June 42.70 36.10 -6.60       9.50 10.8 1.3             1.2 3.2 2
July 31.00 29.00 -2.00       4.00 4.9 0.9             2.4 5.3 2.9
August 30.10 27.80 -2.30       1.40 6.9 5.5             4.7 4.6 -0.1
September 28.40 26.80 -1.60       7.60 9.8 2.2             4.6 4 -0.6
October 27.40 25.60 -1.80       4.70 9.7 5             5.2 4.1 -1.1
November 29.90 24.10 -5.80       11.00 9.4 -1.6             2.1 6.1 4
December 32.50 26.3 -6.2       10.1 9.9 -0.2             0.3 4 3.7
Average change -2.68 2.41 0.82
Upton WWTP
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 0.16 0.17 0.01                              
February 0.18 0.20 0.02                              
March 0.22 0.30 0.07                              
April 0.23 0.27 0.03                              
May 0.21 0.17 -0.04                              
June 0.21 0.17 -0.04                              
July 0.15 0.14 -0.01                              
August 0.14 0.10 -0.04                              
September 0.14 0.10 -0.04                              
October 0.14 0.10 -0.04                              
November 0.17 0.13 -0.03                              
December 0.16 0.16 0.00                              
Average change -0.01
Uxbridge WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
1/31/01 0.60 0.62 0.02       17.90 13.4 -4.5             9.97 19.6 9.63
2/28/01 0.62 0.65 0.03       8.60 5.4 -3.2             7.80 18.4 10.6
3/31/01 0.78 1.05 0.27       4.60 12.3 7.7             7.30 12.43 5.13
4/30/01 0.93 1.13 0.20       2.96 19.9 16.94             10.50 3.76 -6.74
5/31/01 0.77 0.75 -0.03       4.20 14.5 10.3             18.81 19.8 0.991
6/30/01 0.80 0.77 -0.03       4.72 3.45 -1.27             16.75 20.33 3.58
7/31/01 0.61 0.72 0.11       0.99 14.1 13.112             21.31 19.54 -1.769
8/31/01 0.56 0.61 0.05       0.18 0.6 0.418             24.56 21.614 -2.946
9/30/01 0.57 0.56 -0.01       1.87 2.21 0.34             24.70 22 -2.7
10/31/01 0.56 0.60 0.04       2.05 2.77 0.72             23.35 22.8 -0.549
11/30/01 0.58 0.62 0.05       3.20 11.3 8.1             23.40 17.8 -5.6
12/31/01 0.61 0.62 0.01       19.2 7.04 -12.16             18.00 20.64 2.64
Average change 0.06 3.04 1.02
Warren WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 1.73 1.73 0.00                              
February 1.78 2.19 0.41                              
March 2.68 3.41 0.73                              
April 2.69 3.13 0.44                              
May 2.27 1.75 -0.52                              
June 1.94 2.00 0.06                              
July 1.17 1.23 0.06                              
August 1.17 1.11 -0.06                              
September 1.24 0.96 -0.28                              
October 1.03 0.98 -0.05                              
November 1.19 0.81 -0.38                              
December 1.73 0.99 -0.74                              
Average change -0.03
Warwick WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 3.95 4.07 0.12   23.3   27.7 24.6 -3.1 0.07 0.65 0.58 0.5 7.6        
February 3.91 4.17 0.26   31.5   29.6 24 -5.6 0.1 0.5 0.4 0.3 2.5        
March 4.25 4.79 0.55   33.2   38.8 23.3 -15.5 0.04 0.4 0.36 0.2 0.03        
April 4.38 5.86 1.48   24.1   25.8 22 -3.8 0.30 0.2 -0.1 0.4 0.1        
May 4.31 4.28 -0.04   37.5   28.2 33.2 5 5.10 0.1 -5 3.5 0.7        
June 4.27 4.59 0.32   36.4   30.40 26.6 -3.8 10.10 1.6 -8.5 25 0.02        
July 3.87 4.06 0.19 17.8 28.3 10.50 3.00 14 11 1.80 5 3.2 10.3 10.8 0.5      
August 3.94 4.08 0.14 21.1 12.1 -9 3.90 1.8 -2.1 1.00 0.9 -0.1 12.2 6.76 -5.44      
September 4.22 4.01 -0.21 27.8 11.1 -16.7 23.10 2.4 -20.7 1.30 1.1 -0.2 5.8 6.94 1.14      
October 3.79 3.86 0.08 38.2 11.8 -26.4 26.80 2.1 -24.7 3.40 0.8 -2.6 15 6.84 -8.16      
November 3.84 3.76 -0.07 28.7 13.4 -15.3 20.40 2.6 -17.8 2.40 0.6 -1.8 7.5 6.66 -0.84      
December 3.96 3.64 -0.32 51.9 13.3 -38.6 25.1 4.7 -20.4 1.80 0.4 -1.4 5.2 6.3 1.1      
Average change 0.21 -15.92 -8.46 -1.26 -1.95
West Warwick WWTF
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 5.50 5.10 -0.40   11.2   9.2 10.9 1.7 0.02 0.92 0.9 0.01 0.91 0.9      
February 5.50 6.20 0.70   6.6   13.6 7.2 -6.4 0.05 0.31 0.26 0.09 0.72 0.63      
March 7.00 8.60 1.60   7.4   9.6 6.8 -2.8 0.22 0.32 0.1 0.16 0.69 0.53      
April 7.40 8.40 1.00   7.4   10.1 16.2 6.1 0.07 0.07 0 0.2 1.99 1.79      
May 6.30 5.40 -0.90   12   9.5 11.9 2.4 0.1 0.12 0.02 0.37 0.05 -0.32      
June 6.00 6.60 0.60   9.8   4.6 5.8 1.2 0.02 0.34 0.32 3.92 1.84 -2.08      
July 4.20 4.76 0.56   12.7   0.8 6.1 5.3 0.19 0.09 -0.1 10.1 7.76 -2.34      
August 4.20 4.28 0.08 16.6 23.6 7 3 9.9 6.9 0.04 0.06 0.02 12.1 2.54 -9.56      
September 3.90 3.91 0.01 14.6 17.3 2.7 5.1 15.7 10.6 0.11 0.3 0.19 10.2 0.71 -9.49      
October 3.70 3.84 0.14 34.4 15.6 -18.8 7.5 11.5 4 0.16 0.54 0.38 7.1 3.09 -4.01      
November 4.04 3.69 -0.35 53.5 22.1 -31.4 18.7 18.5 -0.2 0.12 0.12 0 0.86 1.66 0.8      
December 5.20 3.80 -1.40 11 19.9 8.9 12.1 19.6 7.5 0.15 0.5 0.35 1.36 1.48 0.12      
Average change 0.14 -6.32 3.03 0.20 -1.92
Woonsocket Regional Sewer Commission
monitoring 50050 00600 00610 00615 00620 00630             conc.
period flow quantity MGD (avg) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) conc. mg/l (max) mg/l (max) nitrite plus
end date nitrogen total (as N) ammonia total (as N) nitrite total (as N) nitrate total (as N) nitrate total 1 det (as N)
  2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change 2000 2001 change
January 8.79 8.39 -0.40   46.5   33.6 38.1 4.50 0.01 0.05 0.04 0.45 1.7 1.25      
February 9.52 9.28 -0.24   40   25 31 6.00 0.52 0 -0.52 0.12 4.8 4.68      
March 11.28 13.52 2.24   30   16.1 33 16.90 1.5 0.2 -1.3 0.47 0.3 -0.17      
April 12.08 11.69 -0.39   37   20.8 24 3.20 0.54 0.3 -0.24 0.01 3.4 3.39      
May 10.28 7.64 -2.64   33   30.3 25.3 -5 0.27 0.9 0.63 0.01 3.2 3.19      
June 10.61 8.98 -1.63   23   31 17.6 -13.4 0.26 2.2 1.94 1.9 6.2 4.3      
July 7.99 7.39 -0.60   27   30.10 22 -8.1 0.03 0.4 0.37 5.1 3.6 -1.5      
August 8.69 6.29 -2.40   34.7   35.00 15.6 -19.4 0.14 4.5 4.36 1.88 11.4 9.52      
September 8.08 5.59 -2.49   9   42.50 2.5 -40 0.12 2.7 2.58 0.12 6.7 6.58      
October 7.46 5.23 -2.23   14.7   39.70 2 -37.7 0.11 0.3 0.19 0.95 10.2 9.25      
November 7.80 5.61 -2.19   8   40.40 9.5 -30.9 0.03 0 -0.03 1.51 6.4 4.89      
December 8.78 5.77 -3.01   11   39.2 1.4 -37.8 0.11 0.2 0.09 0.2 7.7 7.5      
Average change -1.33 -13.48 0.68 4.41