N.H. Code Admin. R. Env-Dw 811.25 – Converting MCL Water Quality Compliance Values

(a) The MCL, MRDL, MCLG, and MRDLG for a contaminant shall be expressed in identical units as a number equal to or greater than 1.0, as specified in table 811-2, below, subject to the notes in (b), below:
Table 811-2: Converting MCL Water Quality Compliance Values
Contaminant
Traditional MCL in compliance units (mg/L)
To convert to a whole number, Multiply by ...
MCL in CCR units
MCLG in Whole Numbers
Microbiological Contaminants
Total Coliform Bacteria
TT
TT
0
Turbidity
TT
TT (NTU)
n/a
E. coli
Routine and repeat samples are total coliform-positive and either is E. coli-positive or system fails to take repeat samples following E. coli-positive routine sample or system fails to analyze total coliform-positive repeat sample for E. coli
Routine and repeat samples are total coliform-positive and either is E. coli-positive or system fails to take repeat samples following E. coli-positive routine sample or system fails to analyze total coliform-positive repeat sample for E. coli
0
Total Organic Carbon
TT
TT (ppm)
n/a
Radioactive Contaminants
Beta/photon emitters
4 mrem/yr
4 mrem/yr
0
Alpha emitters
15 pCi/L
15 pCi/L
0
Combined radium
5 pCi/L
5 pCi/L
0
Uranium
30 ug/L
30 ug/L
0
Inorganic Contaminants
Antimony
0.006
1,000
6 ppb
6
Arsenic
0.010
1,000
10 ppb
0
Asbestos
7 MFL
7 MFL
7
Barium
2
2 ppm
2
Beryllium
0.004
1,000
4 ppb
4
Bromate
0.010
1,000
10 ppb
0
Cadmium
0.005
1,000
5 ppb
5
Chloramines
MRDL = 4
MRDL = 4 ppm
MRDLG = 4
Chlorine
MRDL = 4
MRDL = 4 ppm
MRDLG = 4
Chlorine dioxide
MRDL = 0.8
1,000
MRDL = 800 ppb
MRDLG = 800
Chlorite
1
1 ppm
0.8
Chromium
0.1
1,000
100 ppb
100
Copper
AL=1.3
AL=1.3 ppm
1.3
Cyanide
0.2
1,000
200 ppb
200
Fluoride
4.0
4.0 ppm
4.0
Lead
AL=0.015
1,000
AL=15 ppb
0
Mercury (inorganic)
0.002
1,000
2 ppb
2
Nitrate (as Nitrogen)
10
10 ppm
10
Nitrite (as Nitrogen)
1
1 ppm
1
Selenium
0.05
1,000
50 ppb
50
Thallium
0.002
1,000
2 ppb
0.5
Synthetic Organic Contaminants, including Pesticides and Herbicides
2,4-D
0.07
1,000
70 ppb
70
2,4,5-TP (Silvex)
0.05
1,000
50 ppb
50
Acrylamide
TT
TT (ppm)
0
Alachlor
0.002
1,000
2 ppb
0
Atrazine
0.003
1,000
3 ppb
3
Benzo(a)pyrene (PAH)
0.0002
1,000,000
200 ppt
0
Carbofuran
0.04
1,000
40 ppb
40
Chlordane
0.002
1,000
2 ppb
0
Dalapon
0.2
1,000
200 ppb
200
Di(2-ethylhexyl) adipate
0.4
1,000
400 ppb
400
Di(2-ethylhexyl) phthalate
0.006
1,000
6 ppb
0
Dibromochloropropane
0.0002
1,000,000
200 ppt
0
Dinoseb
0.007
1,000
7 ppb
7
Diquat
0.02
1,000
20 ppb
20
Dioxin [2,3,7,8-TCDD]
0.00000003
1,000,000,000
30 ppq
0
Endothall
0.1
1,000
100 ppb
100
Endrin
0.002
1,000
2 ppb
2
Epichlorohydrin
TT
TT (ppm)
0
Ethylene dibromide
0.00005
1,000,000
50 ppt
0
Glyphosate
0.7
1,000
700 ppb
700
Heptachlor
0.0004
1,000,000
400 ppt
0
Heptachlor epoxide
0.0002
1,000,000
200 ppt
0
Hexachlorobenzene
0.001
1,000
1 ppb
0
Hexachlorocyclopenta-diene
0.05
1,000
50 ppb
50
Lindane
0.0002
1,000,000
200 ppt
200
Methoxychlor
0.04
1,000
40 ppb
40
Oxamyl [Vydate]
0.2
1,000
200 ppb
200
PCBs [Polychlorinated biphenyls]
0.0005
1,000,000
500 ppt
0
Pentachlorophenol
0.001
1,000
1 ppb
0
Picloram
0.5
1,000
500 ppb
500
Simazine
0.004
1,000
4 ppb
4
Toxaphene
0.003
1,000
3 ppb
0
Volatile Organic Contaminants
Benzene
0.005
1,000
5 ppb
0
Carbon tetrachloride
0.005
1,000
5 ppb
0
Chloramines
MRDL = 4
…………
MRDL = 4 ppm
MRDLG = 4
Chlorine
MRDL = 4
…………
MRDL = 4 ppm
MRDLG = 4
Chlorite
1
………..
1 ppm
0.8
Chlorine dioxide
MRDL = 0.8
1,000
MRDL = 800 ppb
MRDLG = 800
Chlorobenzene
0.1
1,000
100 ppb
100
o-Dichlorobenzene
0.6
1,000
600 ppb
600
p-Dichlorobenzene
0.075
1,000
75 ppb
75
1,2-Dichloroethane
0.005
1,000
5 ppb
0
1,1-Dichloroethylene
0.007
1,000
7 ppb
7
cis-1,2-Dichloroethylene
0.07
1,000
70 ppb
70
trans-1,2-Dichloroethylene
0.1
1,000
100 ppb
100
Dichloromethane
0.005
1,000
5 ppb
0
1,2-Dichloropropane
0.005
1,000
5 ppb
0
Ethylbenzene
0.7
1,000
700 ppb
700
Haloacetic Acids (HAA)
0.060
1,000
60 ppb
n/a
MtBE
0.013
1,000
13 ppb
13
Styrene
0.1
1,000
100 ppb
100
Tetrachloroethylene
0.005
1,000
5 ppb
0
1,2,4-Trichlorobenzene
0.07
1,000
70 ppb
70
1,1,1-Trichloroethane
0.2
1,000
200 ppb
200
1,1,2-Trichloroethane
0.005
1,000
5 ppb
3
Trichloroethylene
0.005
1,000
5 ppb
0
TTHMs [Total trihalomethanes]
0.10/0.080
1,000
100/80 ppb
n/a
Toluene
1
1 ppm
1
Vinyl Chloride
0.002
1,000
2 ppb
0
Xylenes, Total
10
10 ppm
10
Per- and Polyfluoroalkyl Substances (PFAS) Contaminants
Perfluorohexane sulfonic acid (PFHxS)
0.000018
1,000,000
18 ppt
0
Perfluorononanoic acid (PFNA)
0.000011
1,000,000
11 ppt
0
Perfluorooctane sulfonic acid (PFOS)
0.000015
1,000,000
15 ppt
0
Perfluorooctanoic acid (PFOA)
0.000012
1,000,000
12 ppt
0
(b) The follow abbreviations shall apply to table 811-2:
1. (1) “AL” means action level;
2. (2) “MRDL” means maximum residual disinfectant level;
3. (3) “MFL” means million fibers per liter;
4. (4) “NTU” means nephelometric turbidity unit;
5. (5) “ppb” means parts per billion;
6. (6) “ppm” means parts per million;
7. (7) “ppq” means parts per quadrillion;
8. (8) “ppt” means parts per trillion;
9. (9) “pCi/L” means picocuries per liter; and
10. (10) “TT” means treatment technique.
  Source. #12675, eff 1-1-19; amd by #12838, eff 9-30-19
  Appendix A - Statutes/Regulations Implemented
  Rule Section(s)
  State Statute(s) Implemented
  Federal Requirements Implemented
  Env-Dw 801 - 802
  RSA 485:2, V; RSA 485:3, I
  40 CFR 141.31; 40 CFR 141, Subpart Q
  Env-Dw 803
  RSA 485:2, V; RSA 485:3, I
  40 CFR 141. 201 – 40 CFR 201.211
  Env-Dw 804.01, 804.02 & 804.04
  RSA 485:2, V; RSA 485:3, I
  40 CFR 141.205(d); Appendix B to 40 CFR 141 Subpart Q
  Env-Dw 804.03
  RSA 485:2, V; RSA 485:3, I & VII
  40 CFR 141.205(d); Appendix B to 40 CFR 141 Subpart Q
  Env-Dw 804.05
  RSA 485:2, V; RSA 485:3, I
  Env-Dw 805 - 810
  RSA 485:2, V; RSA 485:3, I & VII
  40 CFR 141.205(d);
  Appendix B to 40 CFR 141, Subpart Q
  Env-Dw 808.01;
  Env-Dw 808.27-808.30
  RSA 485:43; RSA 485:16-e
  Env-Dw 811
  RSA 485:2, V; RSA 485:3, I, III(b)
  40 CFR 141.141, Subparts O and Q
  Env-Dw 811.02(d);
  Env-Dw 811.07(c);
  Env-Dw 811.22(b), Table 811-1;
  Env-Dw 811.25(a), Table 811-2
  RSA 485:43; RSA 485:16-e