N.H. Code Admin. R. Env-Dw 811.22
(b) If the O/O lacks specific information on the likely source of the detected contaminant(s), the owner shall use the contaminant source information specified below in Table 811-1, as applicable:
Table 811-1: Contaminant Origin
Contaminant
Common Source in Drinking Water
Microbiological Contaminants
Total Coliform Bacteria
Naturally present in the environment
E. coli
Human and animal fecal waste
Total Organic Carbon
Naturally present in the environment
Turbidity
Soil runoff
Radioactive Contaminants
Beta/photon emitters
Decay of natural and man-made deposits
Alpha emitters
Erosion of natural deposits
Combined radium
Erosion of natural deposits
Uranium
Erosion of natural deposits
Inorganic Contaminants
Antimony
Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Arsenic
Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Asbestos
Decay of asbestos cement water mains; erosion of natural deposits
Barium
Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Beryllium
Discharge from metal refineries and coal-burning factories; discharge from electrical, aerospace, and defense industries
Bromate
By-product of drinking water disinfection
Cadmium
Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints
Chloramines
Water additive used to control microbes
Chlorine
Water additive used to control microbes
Chlorine dioxide
Water additive used to control microbes
Chlorite
By-product of drinking water disinfection
Chromium
Discharge from steel and pulp mills; erosion of natural deposits
Copper
Corrosion of household plumbing systems; Erosion of natural deposits; leaching from wood preservatives
Cyanide
Discharge from steel/metal factories; discharge from plastic and fertilizer factories
Fluoride
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories
Lead
Corrosion of household plumbing systems, erosion of natural deposits
Mercury (inorganic)
Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Nitrate (as Nitrogen)
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Nitrite (as Nitrogen)
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Selenium
Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Thallium
Leaching from ore-processing sites; discharge from electronics, glass, and drug factories
Synthetic Organic Contaminants; including Pesticides and Herbicides
2,4-D
Runoff from herbicide used on row crops
2,4,5-TP (Silvex)
Residue of banned herbicide
Acrylamide
Added to water during sewage/wastewater treatment
Alachlor
Runoff from herbicide used on row crops
Atrazine
Runoff from herbicide used on row crops
Benzo(a)pyrene (PAH)
Leaching from linings of water storage tanks and distribution lines
Carbofuran
Leaching of soil fumigant used on rice and alfalfa
Chlordane
Residue of banned termiticide
Dalapon
Runoff from herbicide used on rights of way
Di(2-ethylhexyl) adipate
Discharge from chemical factories
Di(2-ethylhexyl) phthalate
Discharge from rubber and chemical factories
Dibromochloropropane
Runoff/leaching from soil fumigant used on soybeans, cotton, pineapples, and orchards
Dinoseb
Runoff from herbicide used on soybeans and vegetables
Diquat
Runoff from herbicide use
Dioxin [2,3,7,8-TCDD]
Emissions from waste incineration and other combustion; Discharge from chemical factories
Endothall
Runoff from herbicide use
Endrin
Residue of banned insecticide
Epichlorohydrin
Discharge from industrial chemical factories; an impurity of some water treatment chemicals
Ethylene dibromide
Discharge from petroleum refineries
Glyphosate
Runoff from herbicide use
Heptachlor
Residue of banned pesticide
Heptachlor epoxide
Breakdown of heptachlor
Hexachlorobenzene
Discharge from metal refineries and agricultural chemical factories
Hexachlorocyclopenta-diene
Discharge from chemical factories
Lindane
Runoff/leaching from insecticide used on cattle, lumber, gardens
Methoxychlor
Runoff/leaching from insecticide used on fruits, vegetables, alfalfa, livestock
Oxamyl [Vydate]
Runoff/leaching from insecticide used on apples, potatoes and tomatoes
PCBs [Polychlorinated biphenyls]
Runoff from landfills; discharge of waste chemicals
Pentachlorophenol
Discharge from wood preserving factories
Picloram
Herbicide runoff
Simazine
Herbicide runoff
Toxaphene
Runoff/leaching from insecticide used on cotton and cattle
Volatile Organic Contaminants
Benzene
Discharge from factories; leaching from gas storage tanks and landfills
Carbon tetrachloride
Discharge from chemical plants and other industrial activities
Chlorobenzene
Discharge from chemical and agricultural chemical factories
o-Dichlorobenzene
Discharge from industrial chemical factories
p-Dichlorobenzene
Discharge from industrial chemical factories
1,2-Dichloroethane
Discharge from industrial chemical factories
1,1-Dichloroethylene
Discharge from industrial chemical factories
cis-1,2-Dichloroethylene
Discharge from industrial chemical factories
trans-1,2-Dichloroethylene
Discharge from industrial chemical factories
Dichloromethane
Discharge from pharmaceutical and chemical factories
1,2-Dichloropropane
Discharge from industrial chemical factories
Ethylbenzene
Discharge from petroleum refineries
Haloacetic Acids (HAA)
By-product of drinking water disinfection
MtBE
Residual from gasoline spill or leakage
Styrene
Discharge from rubber and plastic factories; leaching from landfills
Tetrachloroethylene
Discharge from factories and dry cleaners
1,2,4-Trichlorobenzene
Discharge from textile-finishing factories
1,1,1-Trichloroethane
Discharge from metal degreasing sites and other factories
1,1,2-Trichloroethane
Discharge from industrial chemical factories
Trichloroethylene
Discharge from metal degreasing sites and other factories
TTHM (Total trihalomethanes)
By-product of drinking water disinfection
Toluene
Discharge from petroleum factories
Vinyl Chloride
Leaching from PVC piping; discharge from plastics factories
Xylenes, Total
Discharge from petroleum factories; discharge from chemical factories
Per- and Polyfluoroalkyl Substances (PFAS) Contaminants
Perfluorohexane sulfonic acid (PFHxS)
Discharge from industrial processes, wastewater treatment, residuals from firefighting foam, runoff/leachate from landfills and septic systems
Perfluorononanoic acid (PFNA)
Discharge from industrial processes, wastewater treatment, residuals from firefighting foam, runoff/leachate from landfills and septic systems
Perfluorooctane sulfonic acid (PFOS)
Discharge from industrial processes, wastewater treatment, residuals from firefighting foam, runoff/leachate from landfills and septic systems
Perfluorooctanoic acid (PFOA)
Discharge from industrial processes, wastewater treatment, residuals from firefighting foam, runoff/leachate from landfills and septic systems
Source. (See Revision Note at chapter heading for Env-Dw 800) #9730, eff 6-30-10; amd by #10771, eff 2-1-15 (from Env-Dw 811.20); ss by #12675, eff 1-1-19; amd by #12838, eff 9-30-19