vvEPA
United States
Environmental Protection
Agency
Technical Fact Sheet-
N-Nitroso-dimethylamine (NDMA)
September 2017
TECHNICAL FACT SHEET- NDMA
Introduction
This fact sheet, developed by the U.S. Environmental Protection Agency
(EPA) Federal Facilities Restoration and Reuse Office (FFRRO), provides
a summary of the contaminant N-Nitrosodimethylamine (NDMA), including
physical and chemical properties; environmental and health impacts;
existing federal and state guidelines; detection and treatment methods;
and additional sources of information. This fact sheet is intended for use
by site managers and other field personnel who may address NDMA
contamination at cleanup sites or in drinking water supplies.
NDMA is a drinking water contaminant of concern because of its
miscibility with water, as well as its carcinogenicity and toxicity.
What is NDMA?
NDMA is a semivolatile organic chemical that forms in both industrial
and natural processes (Cal/EPA 2006; Mitch and others 2003b).
NDMA is not currently produced in pure form or commercially used in
the United States, except for research purposes. It was formerly used
in production of liquid rocket fuel, antioxidants, additives for lubricants
and softeners for copolymers (ATSDR 1989; HSDB 2013).
NDMA can be unintentionally produced in and released from industrial
sources through chemical reactions, such as those that involve
alkylamines. Potential industrial sources include amine manufacturing
plants, tanneries, pesticide manufacturing plants, rubber and tire
manufacturers, fish processing facilities, foundries, dye manufacturers
and surfactant industries (ATSDR 1989).
NDMA is also an unintended byproduct of the chlorination of
wastewater and drinking water at treatment plants that use
chloramines for disinfection (Bradley and others 2005; Mitch and
others 2003).
Disclaimer: The U.S. EPA prepared this fact sheet using the most recent
publicly-available scientific information; additional information can be obtained
from the source documents. This fact sheet is not intended to be used as a
primary source of information and is not intended, nor can it be relied upon, to
create any rights enforceable by any party in litigation with the United States.
Mention of trade names or commercial products does not constitute endorsement
or recommendation for use.
At a Glance
~	Formerly used in the production of
rocket fuel, antioxidants and
softeners for copolymers.
Currently used only for research
purposes.
~	Unintended byproduct of
chlorination of wastewater at
wastewater treatment plants that
use chloramines for disinfection,
raising significant concern as a
drinking water contaminant.
~	Highly mobile in soil, with potential
to leach into groundwater.
~	Oral route is the primary human
exposure pathway.
~	Classified as a B2 (probable
human) carcinogen.
~	Listed as a priority pollutant by the
EPA, but no federal standard has
been established for drinking
water.
~	Detection methods include solid
phase extraction, gas
chromatography and liquid
chromatography.
~	Most common NDMA water
cleanup method is via photolysis
by ultraviolet radiation. Potential
for aerobic and anaerobic NDMA
biodegradation also exists.
United States
Environmental Protection Agency
Land and Emergency
Management (5106P)
1
EPA 505-F-17-005
September 2017

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Technical Fact Sheet - NDMA
Exhibit 1: Physical and Chemical Properties of NDMA
(ATSDR 1989; Cal/EPA 2006; HSDB 2013; NIOSH 2016)
Property
Value/Description
Chemical Abstract Systems (CAS) number
62-75-9
Physical description (physical state at room temperature)
Yellow liquid with faint or no odor
Molecular weight (g/mol)
74.08
Water solubility at 25°C
Miscible
Melting point (°C)
-25 (estimated)
Boiling point (°C)
152 to 154
Specific gravity/Density at 20°F/4°C (g/mL)
1.005 to 1.006
Vapor pressure at 20°C (mm Hg)
2.7
Organic carbon partition coefficient (log Koc)
1.07 (estimated)
Octanol-water partition coefficient (log Kow)
-0.57
Henry's law constant at 20°C (atm-m3/mol)
2.63 x 10"7 (ATSDR 1989)
1.08x10-6 (HSDB 2013)
Abbreviations: g/mol - grams per mole; °C - degrees Celsius; g/mL - grams per milliliter; mm Hg - millimeters of mercury;
atm-m3/mol - atmosphere-cubic meters per mole.
Existence of NDMA in the environment
~	NDMA contamination may be found in air, soil and
water (ATSDR 1999).
~	When released to the air, NDMA is expected to
exist solely as vapor in the ambient atmosphere
and is broken down quickly by sunlight within
minutes (HSDB 2013).
~	When released to soil, NDMA can be highly
mobile and will either volatilize or leach into
groundwater (ATSDR 1999; HSDB 2013).
~	In water, NDMA is completely miscible and is not
expected to sorb onto solid particles or sediment.
NDMA may break down in water as a result of
exposure to sunlight or by natural biological
processes. The potential for bioconcentration in
aquatic organisms is low based on an estimated
bioconcentration factor of 3 (ATSDR 1999; HSDB
2013; WHO 2008).
~	At rocket engine testing facilities in California,
NDMA has been found at high concentrations in
groundwater on site (up to 400,000 nanograms
per liter [ng/L]) and also in downgradient drinking
water wells (up to 20,000 ng/L) (Mitch and others
2003b).
~	In a 2002 survey conducted by the California
Department of Health Services (CDHS), elevated
concentrations of NDMA were detected in
locations where wastewater treatment plant
effluent was used for aquifer recharge and near
facilities that use unsymmetrical dimethyl hydrazine
(UDMH)-based rocket fuel (CDHS 2002; Mitch and
others 2003b).
~	As of March 2011, NDMA was the predominant
nitrosamine detected in samples obtained from
public water systems, which were monitored as
part of the unregulated contaminant monitoring
rule (UCMR). The EPA uses the UCMR to monitor
contaminants that are suspected to be present in
drinking water but that do not currently have
health-based standards under the Safe Drinking
Water Act (EPA 2011a; EPA 2014).
~	The second UCMR was analyzed for NDMA
occurrence and trends across the U.S. NDMA
occurrence was strongly associated with
chloramine use. Elevated NDMA was more
common in surface water systems than
groundwater systems. Smaller utilities were found
to have the most extreme NDMA levels (Woods
and Dickenson 2015)
2

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Technical Fact Sheet - NDMA
What are the routes of exposure and potential health effects of NDMA?
NDMA exposure may occur through (1) ingesting
food that contains nitrosamines, such as smoked
or cured meats and fish; (2) ingesting food that
contains alkylamines, which can cause NDMA to
form in the stomach; (3) drinking contaminated
water; (4) drinking malt beverages (such as beer
and whiskey) that may contain low levels of
nitrosamines formed during processing; (5) using
toiletry and cosmetic products such as shampoos
and cleansers that contain NDMA; and (6)
breathing or inhaling cigarette smoke. Workplace
exposure can occur at tanneries, pesticide
manufacturing plants and rubber and tire plants
(ATSDR 1989, 1999).
The oral route, including consumption of
contaminated food and water, is the primary
human exposure pathway for NDMA (ATSDR
1989; Cal/EPA 2006).
Exposure to high levels of NDMA may cause liver
damage in humans (ATSDR 1999; HSDB 2013).
Potential symptoms of overexposure include
headache; fever; nausea; jaundice; vomiting;
abdominal cramps; enlarged liver; reduced
function of liver, kidneys and lungs; and dizziness
(HSDB 2013; OSHA 2005).
EPA has classified NDMA as a B2 (probable
human) carcinogen based on the induction of
tumors at multiple sites in different mammal
species exposed to NDMA by various routes (EPA
IRIS 2002).
The U.S. Department of Health and Human
Services (DHHS) states that NDMA is reasonably
anticipated to be a human carcinogen (NTP 2014).
DHHS states that NDMA caused tumors in
numerous species of experimental animals, at
several different tissue sites, and by several
different routes of exposure. Tumors occurred
primarily of the liver, respiratory tract, kidney and
blood vessels (NTP 2014; I ARC 1998).
The American Conference of Governmental
Industrial Hygienists (ACGIH) has classified
NDMA as a Group A3 confirmed animal
carcinogen with unknown relevance to humans
(HSDB 2013).
Are there any federal and state guidelines and health standards for NDMA?
EPA has not derived a chronic oral reference dose
(RfD) or a chronic inhalation reference
concentration (RfC) for evaluating NDMA's
noncancer effects in the EPA's Integrated Risk
Information System database (EPA IRIS 2002).
EPA has derived a RfD of 8.0 x 10"6 mg/kg-day
and an RfC of 4.0 x 10"5 mg/m3 as Provisional
Peer-Reviewed Toxicity Values (PPRTVs) for
evaluating noncancer effects (EPA 2007).
EPA has assigned an oral slope factor for
carcinogenic risk of 51 milligrams per kilogram per
day (mg/kg-day)"1, a drinking water unit risk of 1.4
x 10"3 per microgram per liter (|jg/L)"1 and an
inhalation unit risk of 1.4 x 10"2 (jg per cubic meter
(m3) (EPA IRIS 2002).
For tap water, EPA calculated a screening level of
0.11 ng/Lfor NDMA, based on a 10"6 lifetime
excess cancer risk (EPA 2017).
EPA's screening levels for soil are 2.0 x 10-3
milligrams per kilogram (mg/kg) for residential and
3.4 x 10"2 mg/kg for industrial (based on 10"6
cancer risk). The soil screening level for protection
of groundwater is 2.7 x 10"8 mg/kg (EPA 2017).
EPA's screening levels for air are 7.2 x 10-5
micrograms per cubic meter (|jg/m3) for residential
and 8.8 x 10-4 (jg/m3 for industrial (based on 10-6
cancer risk) (EPA 2017).
Various states have established drinking water
and groundwater guidelines, including the
following:
State
Guideline (|jg/L)
Source
Alabama
0.0013
ADEM 2008
Alaska
0.017
AL DEC 2008
California
0.003
Cal/EPA 2006
Colorado
0.00069
CDPHE 2013
Delaware
0.001
DE DNR 1999
Florida
0.0007
FDEP 2005
Indiana
0.0049
IDEM 2015
Massachusetts
0.01
MADEP 2004
Mississippi
0.00131
MS DEQ 2002
New Jersey
0.0007
NJDEP 2015
North Carolina
0.0007
NCDENR 2015
Pennsylvania
0.0014
PADEP 2011
Texas
0.018
TCEQ 2016
Washington
0.000858
WADEP 2015
West Virginia
0.0013
WV DEP 2009
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Technical Fact Sheet - NDMA
~ EPA included NDMA on the fourth Contaminant
Candidate List (CCL4), which is a list of
unregulated contaminants that are known to or
anticipated to occur in public water systems and
may require regulation under the Safe Drinking
Water Act (EPA 2016b).
~ In addition, EPA added NDMA to its UCMR 2,
requiring many large water utilities to monitor for
NDMA (EPA 2015).
What detection and site characterization methods are available for NDMA?
For drinking water, EPA Method 521 uses solid
phase extraction (SPE) and capillary column gas
chromatography (GC) with large-volume injection
and chemical ionization tandem mass spectroscopy
(MS) (EPA 2004).
For wastewater, EPA Method 607 uses methylene
chloride extraction, GC and a nitrogen-phosphorus
detector (NPD) (EPA 2007; EPA 2016a).
For wastewater, EPA Method 1625 uses isotope
dilution, GC and MS (EPA 2007; EPA 2016a).
For groundwater, wastewater, soil, sediment and
sludges, EPA SW-846 Method 8070 uses
methylene chloride extraction, GC and a NPD (EPA
1996).
For solid waste matrices, soil, air sampling media
and water samples, EPA SW-846 Method 8270
uses GC and MS (EPA 1998).
An analytical method has also been developed
specifically to quantify NDMA precursors such as
alkylamines in waste or wastewater (Mitch, and
others 2003).
A method using liquid chromatography tandem MS
(LC/MS/MS) detects both thermally stable and
unstable nitrosamines in drinking water (Zhao and
others 2006).
A study developed a method that is a combination
of SPE and LC/MS/MS for determination of NDMA
in surface water, groundwater and wastewater
samples. The quantification limit identified was 2
ng/L (Topuz and others 2012).
Modifications to GC-MS and GC-NPD methods
including sample evapoconcentration and low
concentration instrument calibration can be used
to detect NDMA in soil to levels below 1
microgram per kilogram (pg/kg) (USACE 2009).
What technologies are being used to treat NDMA?
The most common method to treat NDMA in
drinking water systems is photolysis by ultraviolet
radiation in the wavelength range of 225 to 250
nanometers (nm) (Mitch and others 2003b).
Biological treatment, microfiltration and reverse
osmosis treatment may be used to remove NDMA
precursors from wastewater before chlorination
(Mitch and others 2003b).
Activated sludge, biological activated carbon and
ultraviolet photolysis were found to be effective for
NDMA mitigation in a study investigating 11 sites
using ozone-based wastewater treatment trains
(Gerrity and others 2015).
The Department of Defense's Strategic
Environmental Research and Development
Program (SERDP) is investigating abiotic, biotic
and coupled abiotic/biotic processes to accelerate
NDMA degradation in the subsurface (DoD
SERDP 2008, 2009, 2012).
A recent study of NDMA precursors found that
photolysis and biodegradation were effective
removal mechanisms for precursors in the water
column (Woods and Dickenson 2016).
Laboratory-scale studies have shown that aerobic
and anaerobic biodegradation of NDMA to low
ng/L concentrations in water and soil may be
possible (Bradley and others 2005; DoD SERDP
2008).
A laboratory-scale study demonstrated the
potential for in-situ aerobic cometabolism of
NDMA in the presence of methane- and benzene-
amended groundwater highlighting possible
attenuation mechanisms and rates for NDMA
biotransformation in aerobic aquifers undergoing
active remediation, natural attenuation or
managed aquifer recharge with treated
wastewater (Weidhaas and Dupont 2013).
An Environmental Security Technology
Certification Program demonstration project
evaluated the technical effectiveness and cost of
using a fluidized bed bioreactor (FBR) for treating
NDMA in groundwater at a test facility. The FBR
was found to be an effective means to treat
NDMA, decreasing concentrations from 1 (jg/L to
4.2 ng/L. The cost of the full-scale FBR was
determined to be significantly less than the
comparable ultraviolet system over a 30-year
remedial timeframe (ESTCP 2014).
Laboratory-scale study results suggest that in-situ
coupled abiotic/biotic processes may efficiently
degrade NDMA in groundwater (DoD SERDP
2009).

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Technical Fact Sheet - NDMA
~	Membrane bioreactor (MBR) treatment was found
to be effective in removing NDMA through
biodegradation due to the presence of strong
electron donating functional groups in their
structure (Wijekoon and others 2013).
~	An SERDP project was conducted to identify the
organisms, enzymes and biochemical pathways
involved in the aerobic biodegradation of NDMA.
Laboratory-scale study results highlighted the
importance of monooxygenases in the degradation
of NDMA (DoD SERDP 2012).
~	A SERDP field study was recently completed
utilizing propane biosparging for in situ
remediation of NDMA in groundwater. The field
Where can I find more information at
~	Agency for Toxic Substances and Disease
Registry (ATSDR). 1989. "Toxicological Profile for
n-Nitrosodimethylamine."
www, atsdr. cdc. gov/toxprofiles/tp141. pdf
~	Alabama Department of Environmental
Management (ADEM). 2008. "Alabama Risk-
Based Corrective Action Guidance Manual."
adem.alabama.gov/programs/land/landforms/ARB
CAManual.pdf
~	Alaska Department of Environmental Conservation
(AL DEC) Division of Water. 2008. Groundwater
Cleanup Levels.
dec.alaska.gov/SPAR/csp/auidance forms/docs/G
roundwater Cleanup Levels.pdf
~	ATSDR. 1999. "ToxFAQs - N-
Nitrosodimethylamine."
www, atsdr. cdc. aov/toxfaas/tfacts141. pdf
~	Bradley, P.M., Carr, S.A., Baird, R.B., and F.H.
Chappelle. 2005. "Biodegradation of N-
nitrosodi methyl amine in Soil from a Water
Reclamation Facility." Bioremediation Journal.
Volume 9. Pages 115 to 120.
www.tandfonl ine.com/doi/abs/10.1080/108898605
00276607
~	California Environmental Protection Agency
(Cal/EPA). Office of Environmental Health Hazard
Assessment. 2006. "Public Health Goals for
Chemicals in Drinking Water - N-
Nitrosodimethylamine."
oehha.ca.aov/media/downloads/water/chemicals/p
ha/122206ndmapha O.pdf
~	Colorado Department of Public Health and
Environment (CDPHE) Water Quality Control
Commission. 2013. "The Basic Standards for
Groundwater."
www.colorado.aov/pacific/cdphe/aroundwater-
proaram
test results support that propane biosparging can
be an effective approach to reduce the
concentrations of NDMA in a groundwater aquifer
by 3 to 4 orders of magnitude, and that
concentrations in the low nanograms per liter
(ng/L) range can be achieved with continuous
treatment (DoD SERDP 2016).
~	A laboratory-scale study observed the
decomposition of NDMA in water using nanoscale
zero-valent iron in the presence of aluminum and
iron salts. The highest removal was found at a pH
of 5. Improved removal was associated with a
higher reaction temperature (Lin Lin and others
2013).
it NDMA?	
~	Delaware Department of Natural Resources and
Environmental Control (DE DNREC). 1999.
"Remediation Standards Guidance."
www.dnrec.state.de.us/DNREC2000/Divisions/AW
M/sirb/DOCS/PDFS/Misc/RemStnd.pdf
~	Florida Department of Environmental Protection
(FDEP). 2005. "Contaminant Cleanup Target
Levels."
www.flrules.org/aatewav/ChapterHome.asp7Chapt
er=62~777
~	Gerrity, D., Pisarenko, A.N., Marti, E., Trenholm,
R.A., Gerringer, F., Reungoat, J., and E.
Dickenson. 2015. "Nitrosamines in pilot-scale and
full-scale wastewater treatment plants with
ozonation." Water Research. Volume 72. Pages
251 to 261.
~	Hazardous Substance Data Bank (HSDB). 2013.
N-Nitrosodimethylamine. toxnet. nlm. nih.gov/cgi-
bin/sis/htmlgen?HSDB
~	International Agency for Research on Cancer
(IARC). 1998. "N-Nitrosodimethylamine." Some N-
nitroso compounds. IARC Monographs on the
Evaluation of the Carcinogenic Risk of Chemicals
to Humans. Volume 17. Lyon, France:
International Agency for Research on Cancer.
Page 125.
www.inchem.org/documents/iarc/vol17/n-
nitrosodimethvlamine.html
~	Indiana Department of Environmental
Management (IDEM). 2015. "Remediation Closure
Guide."
www.in.gov/idem/cleanups/files/remediation closu
re ouide.pdf
~	Lin Lin, B. X., Lin, Y., Yan, L., Shen, K., Xia, S.,
Hu, C., and R. Rong. 2013. "Reduction of N-
Nitrosodimethylamine (NDMA) in Aqueous
Solution by Nanoscale Fe/AI2(S04)3." Water, Air,
& Soil Pollution. Volume 224 (7). Page 1.
5

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Technical Fact Sheet - NDMA
Where can I find more information about NDMA? (continued)	
~ U.S. Army Corps of Engineers (USACE). 2009.
"Determination of Low Level NDMA in Soils."
ERDC TN-EQT-09-01.
a cwc.sdp. sirsi.net/ciient/en US/default/index.asset
box.assetactionicon.view/1045326?rm=ENVIRQN
MENTAL+1 %7C%7C%7C1 %7C%7C%7C0%7C%
Massachusetts Department of Environmental
Protection (Mass DEP). 2004. "Current Regulatory
Limit: n-Nitrosodi methyl amine." www.mass.gov/
eea/agencies/massdep/water/drinking/standards/n
-nitrosodimethvlamine-ndma. html
Mississippi Department of Environmental Quality
(MS DEQ). 2002. "Risk Evaluation Procedures for
Voluntary Cleanup and Redevelopment of
Brownfield Sites."
www, deg. state, ms. us/MDEQ. nsf/pdf/GARD brow
nfieldrisk/$File/Proced.pdf?QpenElement
Mitch, W.A., Sharp, J.O, Trussell, R.R., Valentine,
R.L., Alvarez-Cohen, L., and D.L. Sedlack. 2003b.
"N-Nitrosodimethylamine (NDMA) as a Drinking
Water Contaminant: A Review." Environmental
Engineering Science. Volume 20 (5). Pages 389 to
404. superfund. berkelev.edu/pdf/231. pdf
New Jersey Department of Environmental
Protection (NJDEP). 2015. "Groundwater Quality
Standards - Class IIA by Constituent."
www.ni.gov/dep/standards/ground%20water. pdf
North Carolina Department of Environment and
Natural Resources (NCDENR). 2015. "Study Use
of Contaminated Property, Risk Based Report."
www, ncleg. net/documentsites/committees/ERC/E
RC%20Reports%20Received/2015/Department%
20of%20Environment%20and%20Natural%20Res
ources/2015-
Jan%20Studv%20Use%20of%20Contaminated%2
OPropertv. pdf
Occupational Safety and Health Administration
(OSHA). 2005. Chemical Sampling Information -
N-Nitrosodimethylamine. www.osha.gov/dts/
chemicalsampling/data/CH 258000.html.
Pennsylvania Department of Environmental
Protection (PADEP). 2011. Statewide Health
Standards.
files, dep. state, pa .us/Environ me ntalCleanuoBrownf
ields/LandRecvciingProgram/LandRecvclingProgr
amPortalFiles/SWHT ables/T able%201 %202011 .p
df
Texas Commission on Environmental Quality
(TCEQ). 2016. "Texas Risk Reduction Program
Rule."
www.tcea.texas.gov/assets/public/remediation/trrp
/pcls.xlsx
Topuz, E., Aydin, E., and E. Pehlivanoglu-Mantas.
2012. "A Practical LC-MS/MS Method for the
Detection of NDMA at Nanogram per Liter
Concentrations in Multiple Water Matrices." Water,
Air, & Soil Pollution. Volume 223 (9). Pages 5793
to 5802.
7C%7Ctrue&lm=WES
U.S. Department of Defense (DoD) Strategic
Environmental Research and Development
Program (SERDP). 2008. "Bioremediation
Approaches for Treating Low Concentrations of
N.-Nitrosodimethylamine in Groundwater." SERDP
Project ER-1456. www.dtic.mil/cgi-
bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&
AD=ADA499336
DoD SERDP. 2009. "Abiotic and Biotic
Mechanisms Controlling In Situ Remediation of
NDMA." SERDP Project ER-1421. docs.serdp-
estcp.org/content/download/64Q4/8542Q/file/ER-
1421 Final Report.pdf
DoD SERDP 2012. "Oxygenase-Catalyzed
Biodegradation of Emerging Water Contaminants:
1,4-Dioxane and N-Nitrosodimethylamine."
SERDP Project ER-pro pane, docs.serdp-
estcp.org/conte nt/download/15286/174933/fiie/ER-
1417-FR.pdf
DoD SERDP 2016. "Field Demonstration of
Propane Biosparging for In Situ Remediation of N-
Nitrosodimethylamine (NDMA) in Groundwater."
SERDP Project ER-200828. www.serdp-
estcp.org/content/download/40059/384461/fiie/Fin
al%20Report.V1 %20ER-
200828%20Januarv%202016. pdf
Environmental Security Technology Certification
Program (ESTCP). 2014. "Treatment of N-
Nitrosodimethylamine in Groundwater Using a
Fluidized Bed Bioreactor." docs.serdp-
estcp.org/content/download/24415/252901/fiie/ER-
200829-FR.Pdf
National Toxicology Program (NTP). 2014. Report
on Carcinogens, Thirteenth Edition. Research
Triangle Park, NC: U.S. Department of Health and
Human Services, Public Health
Service, www.niehs.nih.gov/health/materials/report
on carcinogens 13th edition the 508.pdf
U.S. Environmental Protection Agency
(EPA). 1996. "Method 8070A. Nitrosamines By
Gas Chromatography."
www.epa.gov/sites/production/files/2015-
12/documents/8070a. pdf
6

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Technical Fact Sheet - NDMA
Where can I find more information about NDMA? (continued)
EPA. 2007. Provisional Peer Reviewed Toxicity
Values for N-Nitrosodimethylamine (CASRN 62-
75-9). 6-19-2007.
hhpprtv.ornl.gov/issue papers/Nitrosodimethvlami
neN.pdf
EPA. 2010. "Designation of a Hazardous
Substance." Code of Federal Regulations (CFR).
Title 40, Chapter 1, Part 302.4.
EPA. 2004. "U.S. EPA Method 521:
Determination of Nitrosamines in Drinking Water
by Solid Phase Extraction (SPE) and Capillary
Column Gas Chromatography with Large Volume
Injection and Chemical Ionization Tandem Mass
Spectrometry (MS/MS)." Version 1.0. National
Exposure Research Laboratory, Cincinnati, Ohio.
EPA 600-R-05-054.
cfpub.epa.gov/si/si public file download.cfm?p d
ownload id=525080
EPA. 2007. "Guidelines Establishing Test
Procedures for the Analysis of Pollutants Under
the Clean Water Act; National Primary Drinking
Water Regulations; and National Secondary
Drinking Water Regulations; Analysis and
Sampling Procedures; Final Rule." 40 CFR Part
122, 136, etseq.
EPA. 1998. "Methods 8270D. Semivolatile Organic
Compounds by Gas Chromatography/Mass
Spectrometry (GC/MS)."
www.epa.aov/sites/production/files/2Q15-
07/documents/epa-8270d. pdf
EPA. 2011 a. "Regulatory Determinations for the
Third Drinking Water Contaminant Candidate List."
Stakeholder Meeting. June 6, 2011. Washington
D.C. www.epa.gov/sites/production/files/2014-
09/documents/preiiminarv-regulatorv-
determinations-3-iune-16th-public-meeting-
siides.pdf
EPA. 2014. "Preliminary Regulatory
Determinations for the Third Drinking Water
Contaminant Candidate List." Stakeholder
Meeting. December 9, 2014. Washington D.C.
www.epa.gov/sites/production/files/2015-
07/documents/preregdet3stakeholderbriefingdec2
014. Pdf
EPA. 2013. "Toxics Criteria for those States Not
Complying with Clean Water Act Section
303(c)(2)(B)." Code of Federal Regulations (CFR).
Title 40, Chapter 1, Part 131.36. July 1 edition.
www.gpo.gov/fdsvs/pkg/CFR-2014-title40-
vol22/pdf/CFR-2014-title40-vol22-sec131 -36. pdf
EPA. 2015. Second Unregulated Contaminant
Monitoring Rule 2 (UCMR 2).
www.epa.gov/dwucmr/second-unregulated-
contaminant-monitoring-rule
EPA. 2016a. Approved Clean Water Act Test
Methods: Organic Chemical Analysis.
water.epa.gov/scitech/methods/cwa/organics
EPA. 2016b. "Contaminant Candidate List 4-CCL
4."	www.epa.gov/ccl/draft-contaminant-candidate-
list-4-ccl-4
EPA. 2017. Regional Screening Level (RSL)
Summary Table, www.epa.gov/risk/reoional-
screening-levels-rsls
EPA Integrated Risk Information System (IRIS).
2002. "N-Nitrosodimethylamine; CASRN 62-75-9."
cfpub.epa.gov/ncea/iris/iris documents/documents
/subst/0045 summary, pdf.
Washington Department of Ecology (Ecology).
2015. "Groundwater Methods B and A ARARs."
fortress. wa.gov/ecv/clarc/FocusSheets/Groundwat
e r%2 0 M et ho ds%2 0 B%2 Oa nd %2 0 A%20a nd %2 0 A
R ARs. pdf
Webster, T.S., Condee, C., and P.B. Hatzinger.
2013. "Ex situ treatment of N-
nitrosodi methyl amine (NDMA) in Groundwater
using a Fluidized Bed Reactor." Water Research.
Volume 47 (2). Pages 811 to 820.
Weidhaas, J., and R.R. Dupont. 2013. "Aerobic
biotransformation of N-nitrosodimethylalmine and
N-nitrodi methyl amine in methane and benzene
amended soil columns." Journal of Contaminant
Hydrology. Volume 150. Pages 45 to 53.
West Virginia Department of Environmental
Protection (WV DEP). 2009. "Voluntary
Remediation and Redevelopment Rule."
www.dep.wv.gov/dlr/oer/voluntarvmain/Documents
/60CSR3%20VRRA%20rule%206-5-09.pdf
Wijekoon, K.C., Fujioka, T., McDonald, J.A., Khan,
5.J.,	Faisal, I.H., Price, W.E., and D.N. Long.
2013. Bioresource Technology. Volume 141.
Pages 41 to 45.
Woods, G.C., and E.R. Dickenson. 2015.
"Evaluation of the Final UCMR2 Database:
Nationwide Trends in NDMA." Journal - American
Waterworks Association. Volume 107 (1). Pages
E58 to E68.
Zhao, Y-Y., Boyd, J., Hrudey, S.E., andX.F. Li.
2006. "Characterization of New Nitrosoamines in
Drinking Water Using Liquid Chromatography
Tandem Mass Spectrometry." Environmental
Science & Technology. Volume 40. Pages 7636 to
7641.
7

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Technical Fact Sheet - NDMA
Where can I find more information about NDMA? (continued)	
~ World Health Organization (WHO). 2008. NDMA in water Quality.
Drinking-water: Background document for	www.who.int/water sanitation health/dwq/chemic
development of WHO Guidelines for Drinking-	als/ndma 2add feb2008.pdf
Contact Information
If you have any questions or comments on this fact sheet, please contact: Mary Cooke, FFRRO, at
cooke. marvt@epa.gov.

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