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Thursday, November 21, 2024

Federal and New Jersey State
Primary and Secondary Drinking Water Standards - 6/2020

Information from the following sources:  Federal and NJ State Primary and Secondary Drinking Water Standards
  Drinking Water Standards by Constituent
Inorganics  
Contaminants Maximum Contaminant Level MCL[µg/l or ppb]
Antimony  6
Arsenic 5*
Asbestos 7x 106 fibers/l > 10µm
Barium  2000
Beryllium  4
Cadmium 5
Chromium 100
Copper  1300**[AL]
Cyanide  200
Fluoride 4000
Lead 15**[AL]
Mercury 2
Nickel +
Nitrate[as nitrogen]  10,000
Nitrite  1,000
[combined nitrate/nitrite 10,000
Selenium  50
Thallium  2
** An action level [AL] is not an MCL. It is a trigger point at which remedial action is to take place.
+  No MCL-Monitoring Required.
* N.J. MCL [A-280]
Synthetic Organic Compounds  
Contaminants MCL [µg/l or ppb]
Alachlor  2
Aldicarb +
Aldicarb Sulfone +
Aldicarb Sulfoxide +
Atrazine  3
Benzo[a]pyrene  0.2
Carbofuran  40
Chlordane  0.5*
Dalapon  200
Dibromochloropropane [DBCP]  0.2
Di[2-ethylhexyl]adipate  400
Di[2-ethylhexyl]phthalate  6
Dinoseb  7
Diquat  20
Endothall  100
Endrin  2
Ethylene dibromide [EDB]  0.05
Glyphosate  700
Heptachlor  0.4
Heptachlor Epoxide  0.2
Hexachlorobenzene  1
Hexachlorocyclopentadiene 50 50
Lindane  0.2
Methoxychlor  40
Oxamyl  200
PCBs  0.5
Pentachlorophenol  1
Perfluorononanoic Acid (PFNA)±  0.013*
Perfluorooctanoic Acid (PFOA)±  0.014*
Perfluorooctane sulfonic Acid (PFOS)±  0.013*
Picloram  500
Simazine  4
Toxaphene  3
2,3,7,8-TCDD [Dioxin]  3 X 10-5
2,4-D  70
2,4,5-TP [Silvex]  50
1,2,3-Trichloropropane (1,2,3-TCP)  0.030*
* N.J. MCL [A-280]  
+ No MCL - Monitoring Required		  
Volatile Organic Compounds  
Contaminants MCL [µg/l or ppb]
Benzene  1*
Carbon Tetrachloride  2*
1,2-Dichlorobenzene (ortho)  600
1,3-Dichlorobenzene (meta)  600*
1,4-Dichlorobenzene (para)  75
1,1-Dichloroethane 50*
1,2-Dichloroethane  2*
1,1-Dichloroethylene  2*
cis-1,2-Dichloroethylene  70
trans-1,2-Dichloroethylene  100
1,2-Dichloropropane  5
Ethylbenzene  700
Methyl tertiary Butyl Ether 70*
Methylene Chloride  3*
Monochlorobenzene  50*
Naphthalene 300*
Styrene  100
1,1,2,2-Tetrachloroethane 1*
Tetrachloroethylene  1*
Toluene  1000
1,2,4-Trichlorobenzene  9*
1,1,1-Trichloroethane  30*
1,1,2-Trichloroethane  3*
Trichloroethylene  1*
Vinyl Chloride  2
Xylenes [total] 1000*
* N.J. MCL [A-280]  
Secondary Standards [primarily aesthetic]  
Physical Characteristics Recommended Upper Limit or Optimum Range
Color 10 color units (standard cobalt scale) 
pH 6.5 to 8.5 (optimum range)
Odor 3 Threshold odor number
Taste No objectional taste
Chemical Characteristics Recommended Upper Limit (mg/l or ppm)
ABS/L.A.S. 0.5
Aluminum  0.2
Chloride 250
Fluoride 2
Hardness (as CaCO3)  250
Iron 0.3
Manganese 0.05
Silver 0.1
Sodium 50
Sulfate 250
Total dissolved solids 500
Zinc 5
Trihalomethanes    80µg/l[ppb] running annual average
Total of Dichlorobromomethane, Chlorodibromomethane, Bromoform and Chloroform
Haloacetic Acids 60µg/l[ppb] running annual average
Total of Monochloroacetic, Dichloroacetic, Trichloroacetic, Bromoacetic and Dibromoacetic acids
Bromate (plants using ozone) 10µg/l[ppb] running annual average
Chlorite (plants using chlorine dioxide) 1,000µg/l (ppb) daily/follow up monitoring
Radionuclides Combined radium 226/228 mcl is 5 picocuries/l (pCil); gross alpha particle radioactivity (including radium 226 but excluding radon and uranium) MCL is 15 pCi/l; beta/photon emitters MCL is 4mrem/yr; uranium MCL is 30 μg/l.
Turbidity  No more than 5% of the samples may exceed 0.3 NTU, nor any sample exceed 1 NTU
Coliform bacteria standards are based on an MCL for E. Coli, and uses E. Coli and total coliforms to initiate a “find and fix” approach to address fecal contamination that could enter into the distribution system. It requires public water systems to perform assessments to identify sanitary defects and subsequently take action to correct them. 
Per- and polyfluoroalkyl substances (PFAS such as PFNA, PFOA, & PFOS) are considered to be Synthetic Organic Compounds due to their chemical makeup, however, their regulatory framework follows that of Volatile Organic Compounds. 

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