Water Resources in Rockland - Planning in a Changing World

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1996 - 2009 Arsenic Testing Table

1996 - 2009 Arsenic Testing Table

back to Water Quality > Arsenic page    download table in excel format

  2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996
  ppb (micrograms/liter)
DeForest WTP Finished 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.0            
Letchworth WTP Finished 0.5 0.5 0.5 0.5                    
Ramapo Well Field TP POE 1.3 0.5                        
Spring Valley Well Field TP POE 0.5 0.5                        
SW1 Spring Valley Well     1.3   1.0 1.3 1.4   2.0   na      
SW1A SV Well                       1.0 0.0 0.0
SW3 Spring Valley Well     1.2 0.5   1.3     2.1     1.0    
SW3 Spring Valley Well           1.4                
SW3 SV Well                     1.0      
SW4 Spring Valley Well     1.5   1.3 1.5 1.4   2.5   na     0.0
SW4 Spring Valley Well           2.1                
SW6 Spring Valley Well     1.3   1.1 1.5 1.4   2.5   na   0.0 0.0
SW8 Sparkill Well   0.5 0.5                      
SW8/11 Sparkill Well   0.5                        
SW11 Sparkill Well     1.1                      
SW13 Nanuet Well     2.3   2.3 2.5 2.2           0.0  
SW13 Nanuet Well     2.3   2.3 2.3     2.4   1.0     0.0
SW 13/SW 14 Nanuet  2.2 2.3                        
SW 13/SW 14 Nanuet    0.5                        
SW14 Nanuet Well     2.1   2.6     1.5            
SW14 Nanuet Well     2.1                      
SW15 Blauvelt Well 0.5 0.5 0.5     1.0     1.0   na      
SW15 Blauvelt INF Well         1.0                  
SW16 Tappan Well     0.5   0.5 0.5   1.0 1.1     1.0   0.0
SW16 Tappan Well     0.5                      
SW16/SW20 Tappan Well 1.0 0.5                        
SW17 Spring Valley Well     1.1   1.1 1.2   1.2 1.5          
SW17 Spring Valley Well  eff                         0.0 10.0
SW17 Spring Valley influent                           0.0
SW18 New Hempstead Well     0.5   0.5   0.5   0.0       0.0 0.0
SW18 New Hempstead Well                            
SW18/SW24 New Hempstead Well 0.5 0.5                        
SW19 Bardonia Well       0.5         0.0          
SW20 Tappan Well       0.5             0.0   0.0 0.0
SW21 Germonds Well   0.5 0.5 0.5                    
SW21 Spring Valley Well                     1.0     0.0
SW22 Pearl River Well     1.5   1.8     2.1 2.4   2.0      
SW23 New City Well   0.5 0.5           0.0   0.0     0.0
SW23 New City Well     0.5                      
SW24 New Hempstead Well     0.5   0.5   0.5   0.0       0.0 0.0
SW25 Piermont Well               0.5            
SW25 Piermont Well               0.5            
SW26 Tallman Well 3.9 3.8 3.5     4.2     5.6         10.0
SW26 Tallman Well   3.7                        
SW27 Ramapo Well     0.5   0.5 0.5   0.5 0.0       0.0 0.0
SW27 Ramapo Well                         0.0  
SW27 River Road 0.5 0.5                        
SW28 Viola Well     0.5   0.5 0.5   0.5 0.0   na   0.0  
SW28/106 Viola Well 0.5 0.5                        
SW29 Ramapo Well     0.5   0.5 0.5   0.5 0.0       0.0 0.0
SW29 Lake Road 0.5 0.5                        
SW30 Monsey Well 0.5 0.5 0.5         0.5 0.0   na   0.0 0.0
SW30 Monsey Well INF         0.5 0.5     0.0          
SW31 Monsey Well 0.5 0.5 0.5         0.5            
SW31 Monsey Well INF         0.5 0.5 0.5              
SW31 Monsey Well EFF                 0.0   na      
SW32 Wesel Well     0.5   0.5 0.5   0.5 0.0   na   0.0 0.0
SW32 Wesel Road Well 0.5 0.5                        
SW37 Pomona Well     1.4   1.6 0.5   1.3 1.8   na   0.0 0.0
SW37 Pomona Well           1.5                
SW37/38 Pomona Well 1.5 1.5                        
SW38 Pomona Well     1.3   1.5 1.4     1.8   na     0.0
SW38 Pomona Well           1.6                
SW 42 Catamount Well     0.5 1.0   0.5         na      
SW42a Catamount Well                         0.0 0.0
SW42/54 Catamount Well 0.5 0.5           0.5 0.0          
SW46 Garnerville Well                     na   0.0 0.0
SW50 Thiells Well     0.5   0.5 0.5   1.1 0.0   na   0.0 0.0
SW50/51 Thiels Well 0.5 0.5                        
SW51 Thiells Well     0.5   1.0 0.5     1.8   na   0.0 0.0
SW53 Saddle River Well 5.5 4.9 4.4   5.2 5.2 5.8 5.6 5.5   na   10.0 0.0
SW53 Saddle River Well           5.6                
SW 54 Catamount Well     0.5 0.5   0.5         na      
SW 54 Catamount Well           0.5                
SW54a Catamount Well                         0.0 0.0
SW55 Nottingham Well 2.2 2.0 0.5   2.3 2.4   2.8 2.6   na   0.0 0.0
SW55 Nottingham Well           2.1                
SW56 Willow Tree Well 0.5 0.5 0.5   0.5 0.5   0.5 0.0   na     0.0
SW64 Norge Well 1.1 0.5 0.5   0.5 0.5   0.5 0.0   na 1.0   0.0
SW 65 Pascack Well 1.3   0.5 0.5   2.1   1.2 1.4       0.0 0.0
SW 65 Pascack Well           1.1         1.0      
SW65 Pascack Road Well   1.3                        
SW66 Elmwood Well 0.5 0.5 0.5         0.5 0.0          
SW66 Elmwood Well   0.5                        
SW66 Elmwood Well EFF                     0.0   0.0  
SW 67 Grandview Well     0.5 11.0   9.0   12.0 0.0   na     10.0
SW 67 Grandview Well       12.0   9.0                
SW 67 Grandview Well       13.0                    
SW 67 Grandview Well       17.0                    
SW 67 Grandview Well Filtered       16.0                    
SW 67 Grandview Well       16.0                    
SW 67 Grandview Well       13.0                    
SW67/78 Grandview Well   0.5                        
SW68 Cherry Lane Well 2.1 2.9 3.4   6.2 2.2 2.4   3.5   na     0.0
SW68 Cherry Lane Well   5.0       2.7                
SW69 Pine Brook Well 0.5 0.5 0.5   0.5 0.5   0.5 9.2   na   0.0 0.0
SW69 Pine Brook Well   0.5                        
SW70 Birchwood Well 1.3 0.5 0.5   0.5     0.5 1.2   na     0.0
SW71 Eckerson Rd. Well 0.5 0.5 0.5   0.5 0.5   0.5 0.0   na   0.0 0.0
SW72 Rustic Well 4.7   4.8   4.5 4.7 4.3   5.3   na   0.0 10.0
SW72 Rustic Well           4.1               0.0
SW72 Rustic Drive Well   4.6                        
SW73 Lake Shore Well 0.5 0.5 0.5   0.5 0.5   0.5 0.0   na     0.0
SW 78 Grandview Well     0.5 15.0   6.8     5.7   na   0.0 10.0
SW 78 Grandview Well       18.0                    
SW 78 Grandview Well       2.3                    
SW 78 Grandview Well       2.1                    
SW 78 Grandview Well       20.0                    
SW 78 Grandview Well Filtered       18.0                    
SW 78 Grandview Well       15.0                    
SW 78 Grandview Well       17.0                    
SW79 West Gate Well 1.1 0.5 0.5   0.5 0.5 0.5 0.5 0.0   na     0.0
SW 82 Eckerson Well   1.1 0.5 1.1   1.2   0.5 1.3   na   0.0 0.0
SW 82 Eckerson Well 1.6         0.5                
SW 83 Grotke Well     0.5 0.5   0.5   0.5 0.0   na     0.0
SW84 Ramapo Valley Well     0.5   0.5 0.5   0.5 0.0   0.0 0.0    
SW85 Ramapo Valley Well     0.5   0.5 0.5   0.5 0.0   0.0     0.0
SW93 Ramapo Valley Well     0.5   0.5 0.5 0.5       na     0.0
SW94 Ramapo Valley Well     0.5   0.5 0.5 0.5       na   0.0 0.0
SW95 Ramapo Valley Well     0.5   0.5 0.5 0.5       na   0.0 0.0
SW96 Ramapo Valley Well     0.5   0.5 0.5 0.5       na 0.0 0.0 0.0
SW 97 Ramapo Valley Well     0.5 0.5   0.5 0.5       na 0.0 0.0 0.0
SW97 Ramapo Valley Well                           0.0
SW97 Ramapo Valley Well                           0.0
SW97 Ramapo Valley Well                           0.0
SW97 Ramapo Valley Well                           0.0
SW97 Ramapo Valley Well                           0.0
SW97 Ramapo Valley Well                           0.0
SW 98 Ramapo Valley Well     0.5 0.5   0.5 0.5   0.0   na   0.0 0.0
SW99 Ramapo Valley Well     0.5   0.5 0.5   0.5 0.0   0.0      
SW100 Ramapo Valley Well     0.5   0.5 0.5   0.5 0.0   0.0 0.0   0.0
SW 106 Viola Well     0.5 0.5   0.5     0.0          
 
# of well AS measurements 32 42 61 27 41 60 17 33 49 0 12 plus 35 na's 8 33 55
# of wells 32 37 57 14 40 47 17 32 49 0 same 8 32 48
max 5.5 5 4.8 20.0 6.2 9.0 5.8 12 9.2   2.0 1.0 10.0 10.0
# of measurements > = 5 1 1 0 13 2 5 1 2 4   0 0 1 5
# of measurements > 10 0 0 0 13 0 0 0 1 0   0 0 1 5
# of measurements < = 0.5 18 27 46 12 26 33 11 23 27 0 7 4 32 50

The well numbers which equaled or exceeded 10 ppb for at least one sample included: SW 17, 26, 53, 67, 72, 78. The two wells which had elevated arsenic concentrations in 2006 were SW 67 and SW 78. (Source: United Water)

 
 

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