EPA-822-N-22-001

V>EPA	Spring 2022

United States
Environmental Protection
Agency

FSTRAG

Newsletter

FEDERAL-STATE TOXICOLOGY RISK ANALYSIS COMMITTEE

What Is FSTRAC?

FSTRAC's mission is to strengthen relationships and cooperation among EPA, states and tribes through
the exchange of technical information primarily regarding water-related human health and risk assess-
ment and also share information on ecological effects related to water quality criteria. FSTRAC is composed
of current representatives from governmental agencies (state, tribal, federal health and environmental
agencies, and other regulatory authorities) and representatives from the Association of State Drinking
Water Administrators (ASDWA) and the Association of Clean Water Administrators (ACWA). The goal of
FSTRAC is to share information that supports the development of well-rounded, integrated approaches to
effects assessment, risk assessment, risk management, risk communication, and standard-setting for drink-
ing water, groundwater, and surface water contaminants. Specific objectives of FSTRAC include:

•	To foster cooperation, consistency, and an understanding of goals and problems in human health and
ecological risk assessment for contaminants in water.

•	To allow the exchange of technical information, including toxicity/exposure data and analysis, and
methodologies and assumptions related to the development and implementation of regulations, criteria,
advisories, and other toxicity values under the Safe Drinking Water Act and the Clean Water Act, and
other state and tribal rules and policies as applicable.

•	To allow the exchange of information on research priorities and results.

•	To share science policy concerns regarding water-related human health and ecological risk assessment.

Recent Webinars

FSTRAC holds several webinars each year to share
information through presentations and discussions
regarding human health risk analysis and water
quality issues.

HECD Priorities in FY 2022: Mid-Year Update (presented by
Ms. Elizabeth (Betsy) Behl, HECD/OST/OW/EPA) Ms. Behl
described EPA OST/HECD's accomplishments since
September 2021 including publishing the Biological
Condition Gradient for Puerto Rico and U.S. Virgin
Islands Coral Reefs, holding a public webinar on

updated nutrient criteria for lakes and reservoirs, pub-
lishing the GenX chemicals final toxicity assessment,
holding a national annual biosolids meeting, pub-
lishing draft updated toxicity assessments for PFOA
and PFOS and mixtures approach for EPA Science
Advisory Board (SAB) review, and holding a problem
formulation meeting on aquatic life criteria for ions.

She described some of EPA OST/HECD's FY 2022
priorities for work both under the Clean Water Act
and Safe Drinking Water Act including publishing

The purpose of this newsletter is to update Federal-State Toxicology and Risk Analysis Committee (FSTRAC) members
on current developments in toxicology, risk analysis, and water quality criteria and standards. This newsletter also
provides information on recent FSTRAC webinars and upcoming events. Please share this newsletter with those who
may be interested in these topics. If you are interested in joining FSTRAC, please contact the FSTRAC Co-Chairs,
Dr. Shamima Akhter (Akhter.Shamima@epa.gov) or Ms. Katie Fallace (Katie.Fallace@state.mn.us).


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final drinking water health advisories (HAs) for
GenX chemicals and PFBS; developing Maximum
Contaminant Level Goals (MCLGs) for PFOA and
PFOS for the National Primary Drinking Water
Regulation (NPDWR) of PFAS; moving quickly to
update the HAs for PFOA and PFOS based on SAB
recommendations; responding to comments on PFOA
and PFOS draft aquatic life criteria and preparing
for publication of final criteria at the end of 2022;
supporting state-specific efforts to develop new nutri-
ent criteria for lakes; providing technical support
through N-STEPS for development of nutrient criteria
for rivers and streams, estuaries, and coastal waters;
developing biological condition gradients that address
climate; reassessing toxicity of currently regulated
chemicals for the Six Year Review of Drinking Water
Standards; and holding an SAB review of biosolids
risk assessment approaches.

Draft Fifth Contaminant Candidate List (CCL 5) (presented
by Ms. Kesha Forrest and Ms. Nicole Tucker, OGWDW/OW/
EPA) In their presentation, Ms. Forrest and Ms. Tucker
provided the statutory and regulatory background
for CCLs, the overall approach used for CCL 5, and
the contaminants listed for the Draft CCL 5. They
described the CCL 5 development process for both
chemical and microbial contaminants, which includes
building the universe, screening the universe, and clas-
sifying /selecting contaminants for listing. Ms. Forrest
mentioned that the chemical contaminants included
in the universe were evaluated and assigned screening
points based on the available health effects and occur-
rence data elements. The top-scoring and nominated
chemicals, excluding chemicals with recent and/or pre-
liminary Regulatory Determinations, were included on
the preliminary CCL (PCCL). These contaminants were
then classified/selected for the Draft CCL 5 using all
available information; including additional data from
literature searches, calculated health concentrations,
final hazard quotient, and attribute scores for preva-
lence, magnitude, potency and severity. Teams of EPA
scientists evaluated the information and made recom-
mendations for the inclusion of contaminants on the
Draft CCL 5. Ms. Tucker mentioned that the microbial
contaminants included in the initial universe selected
for CCL 5 were screened using 12 criteria. The contam-
inants that screened through the criteria comprise the

microbial PCCL 5. The microbial contaminants on the
PCCL were then evaluated and scored based on water-
borne disease outbreaks, occurrence, and health effects.
The microbial contaminants with the highest scores are
proposed for inclusion on the CCL 5. The Draft CCL
5 consists of 81 contaminants/groups (69 chemicals/3
chemical groups and 12 microbes).

Cumulative Impacts: Office of Research and Development
(ORD) Research and Next Steps (presented by Ms. Susan
Julius and Dr. Nicolle Tulve, CPHEA/ORD/EPA, and Ms. Sarah
Mazur, SHC/ORD/EPA) Ms. Julius, Dr. Tulve, and
Ms. Mazur mentioned that equity/environmental
justice is a priority of the Biden administration and
that EPA ORD is working to ensure its research
portfolio aligns with these priorities. They noted
that EPA ORD will integrate efforts across research
programs to improve understanding of cumulative
impacts and develop and apply the necessary models,
methods, and tools to conduct real-world assessments
that account for both adverse and beneficial health
and environmental effects. Ms. Julius, Dr. Tulve,
and Ms. Mazur described several examples of how
EPA ORD is advancing the science of cumulative
impacts, including systematic review of chemical and
non-chemical stressors for children's health, chemical
co-exposure monitoring, lead hotspots modeling,
cumulative impacts of criteria air pollutants, and the
equitable resilience builder tool. They noted that EPA
released for external review and public comment a
white paper that presented recommendations on how
to strengthen the foundation for assessing cumula-
tive impacts within EPA ORD. Ms. Julius, Dr. Tulve,
and Ms. Mazur mentioned that next steps include
finalizing the ORD white paper, developing FY23-26
Strategic Research Action Plans, reviewing proposed
products focused on cumulative impacts and envi-
ronmental justice, and collaborating across EPA to
support agency efforts on these priority topics.

Accelerating Public Health Protections by Identifying Per-
and Polyfluoroalkyl Substances (PFAS) Categories (presented
by Mr. Tim Watkins, SHC/ORD/EPA) Mr. Watkins men-
tioned that managing and addressing the public
health risk from exposure to PFAS is one of the
most pressing challenges facing EPA and its part-
ners. He noted that because there are thousands of

FSTRAC Newsletter ~ Spring 2022


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PFAS, it would be extremely time consuming and
resource intensive to assess and manage their risk on
a chemical-by-chemical basis; however, treating the
entire class of PFAS as a single group would also be
problematic due to differences in chemical/physical
properties. Mr. Watkins noted that EPA is working to
categorize PFAS into smaller categories based on sim-
ilarities across defined parameters, such as chemical
structure, physical and chemical properties, and tox-
icological properties. He mentioned that EPA ORD
is developing PFAS categories for hazard assessment
using tiered toxicity and toxicokinetic testing and
chemical read-across approaches. He noted that this
ongoing research has been applied in developing the
National PFAS Testing Strategy that EPA is using to
identify and select PFAS for which the agency will
require testing using Toxics Substances Control Act
authorities to inform and refine categories for hazard
assessment. Mr. Watkins also noted that developing
PFAS categories for removal and treatment will enable
EPA to identify the full set of PFAS that are expected
to be removed/treated when establishing technology-
based regulations.

New Jersey Drinking Water Quality Institute Maximum
Contaminant Level Recommendation for 1,4-Dioxane
(presented by Dr. Gloria Post, NJDEP) Dr. Post mentioned
that 1,4-dioxane is a synthetic organic chemical and

historically, a major use was as a stabilizer for chlo-
rinated solvents, particularly 1,1,1-trichloroethane.
She mentioned that 1,4-dioxane was included in EPA's
Unregulated Contaminant Monitoring Rule 3 (UCMR
3) in 2013-2015, and it was detected above the min-
imum reporting level of 0.07 ng/L and above EPA's
Health Risk Concentration for 10~6 cancer risk of 0.35
Hg/L in 45.9% and 17.2% of New Jersey's public water
systems monitored for UCMR 3, respectively. Dr.

Post mentioned that the New Jersey Drinking Water
Quality Institute (NJDWQI) is an advisory body
established by the New Jersey Safe Drinking Water
Act that is charged with recommending MCLs to
NJDEP. She noted that in December 2018, the NJDEP
Commissioner requested that the NJDWQI recom-
mend an MCL for 1,4-dioxane. Dr. Post mentioned
that the primary focus of the NJDWQI Health Effects
Subcommittee Evaluation was on carcinogenicity
and mode of action studies. She described the cal-
culation and considerations used by the NJDWQI to
determine the recommended MCL value of 0.33 ng/L
for 1,4-dioxane. Dr. Post mentioned that the NJDEP
Commissioner has accepted the DWQI MCL recom-
mendation for 1,4-dioxane, but NJDEP has not yet
proposed an MCL.

Information from States Developing Guidance for Specific Chemicals

Criteria Values

Minnesota Department of Health

The Minnesota Department of Health (MDH) has
recently completed water guidance for n-hexane
and perfluorohexanoic acid (PFHxA). Chemicals
currently under full toxicology review include: chlo-
rothalonil and degradate 4-hydoxychlorothalonil and

1,2-dibromomethane. MDH has also completed a
re-evaluation of perfluorobutane sulfonic acid (PFBS)
existing water guidance values. More detailed infor-
mation on MDH water guidance values can be found
on MDH's Human Health-Based Water Guidance
Table website at

https://www.health.state.mn.us/communities/
environment/risk/guidance/gw/table.html.

Risk Assessment

EPA Integrated Risk Information System
Assessments

The EPA ORD's Health and Environmental Risk
Assessment (HERA) Program is designed to develop
and apply state-of-the-science research to characterize

impacts on human and ecological systems—whether
they result from exposure to single, complex, or mul-
tiple physical, chemical, or biological stressors—to
support and improve EPA's risk assessment and risk
management decisions. Integrated Risk Information

FSTRAC Newsletter ~ Spring 2022


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System (IRIS) assessments fall under HERA's Science
Assessment Development Research Area, which
is focused on producing high quality, transparent,
consistent, and scientifically defensible assessment
products to meet EPA's diverse statutory and policy
needs. For more information about HERA, visit EPA's
HERA Website.

IRIS Toxicological Review of PFHxA and Related
Salts (Public Comment and External Review
Draft)

In February 2022, EPA released the draft "IRIS
Toxicological Review of Perfluorohexanoic Acid
(PFHxA) and Related Salts" for a 60-day public com-
ment period and external peer review. The deadline
for public comments was April 4, 2022. The IRIS
assessment of PFHxA will undergo an independent
external scientific peer review. Following the external
peer review meeting, the assessment will be revised,
taking into consideration all public and external peer
review comments received. To view the draft toxi-
cological review document, refer to EPA's PFHxA
Website.

Draft IRIS Toxicological Review of
Perfluorobutanoic Acid (PFBA) and Related Salts
(External Peer Review Report)

In August 2021, EPA released a report titled "IRIS
Toxicological Review of Perfluorobutanoic Acid
(PFBA) and Related Salts." The PFBA IRIS assessment
underwent a 60-day public comment period and inde-
pendent external peer review. Following the external
peer review meeting that was held on February 22-23,
2022, the assessment is being revised, taking into
consideration all public and external peer review com-
ments received. In June 2022, EPA released the final
peer review report. To view the draft toxicological

review document, as well as the final external peer
review report, visit the EPA PFBA Website.

Drinking Water

Minnesota Department of Health

As part of the Statewide PFAS Monitoring Project,
MDH has launched a web-based dashboard for the
public to access information about PFAS monitoring
in public water systems. The dashboard is an inter-
active web mapping tool, similar to the State of Ohio
PFAS Action Plan Interactive Dashboard and Map.
MDH will update the dashboard as it makes progress
towards its long-term goal of sampling all commu-
nity water systems for 29 PFAS compounds. More
information about the Statewide PFAS Monitoring
Program is available on MDH's website at
https://www.health.state.mn.us/communities/
environment/water/pfas.html
and more information about the dashboard is
available at

https://www.health.state.mn.us/communities/
environment/water/pfasmap.html.

Clean Water

Minnesota Department of Health

Earlier this year, MDH released a white paper provid-
ing guidance on what to consider from a public health
perspective when approaching stormwater reuse in
Minnesota. It gives an overview of potential health
risks from stormwater reuse, presents a quantitative
assessment of microbial risk with Minnesota data, and
describes a risk-based framework that could be one
approach to managing risks. The report is available on
MDH's Water Reuse website at
https://www.health.state.mn.us/waterreuse.

Treatability Issues for Contaminants
Use of Biochar to Reduce Lead Toxicity

In May 2022, the results of an EPA Region 10 Regional
Applied Research Effort (RARE) project were pub-
lished in the journal Chemosphere. The project
focused on samples collected at the Bunker Hill
Mining and Metallurgical Complex (Lower Coeur

d'Alene Basin, Idaho). This research identified that
different analytical methods and sampling handing
(i.e., oxic versus anoxic conditions) can have a large
impact on the percent of lead (Pb) that is considered
bioaccessible. This information can help improve
future monitoring efforts by helping project manag-
ers identify the most relevant analytical method to

FSTRAC Newsletter ~ Spring 2022


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assess bioaccessibility based on local conditions and
biological receptors. This research also showed that
the application of biochar amendments to Pb con-
taminated soils/sediments may only result in modest
decreases in bioaccessibility (< 10%); however, the
effectiveness of the amendments may vary depend-
ing on extraction techniques, lead speciation, and
soil characteristics. Overall, the largest impact on Pb
bioaccessibility was related to changes in redox condi-
tions during the experiments and sample processing.
For materials that are typically anoxic (e.g., sediments
submerged under water), the impact of air-drying the
samples prior to analysis resulted in oxidation of the
sediment and a large increase in the measured Pb bio-
accessibility. Therefore, air-drying the samples prior
to analysis has the potential to greatly overestimate
Pb bioaccessibility in sediments that would normally
be found under anoxic field conditions. Maintaining
anoxic conditions during the sampling processing
could result in a more accurate representation of
the Pb bioaccessibility that may be encountered in

the field. The observation that air-drying sediment
samples increases the Pb bioaccessibility highlights
the important role that redox conditions have on
impacting Pb contaminated soils/sediments. These
results suggest that remediation strategies, water level
management actions, and climate change impacts that
result in anoxic sediments being exposed to the air/
oxidized can increase Pb bioaccessibility.

The research conducted as part of this RARE project
has been subject to internal EPA review and external
journal peer review and has been published:

Plunkett, S.A., C.S. Eckley, T.P. Luxton, and M.G.
Johnson. 2022. The effects of biochar and redox
conditions on soil Pb bioaccessibility to people and
waterfowl. Chemosphere 294:13367.
https://doi.org/10.1016/jxhemosphere.2022.133675

For additional information about this project, please
contact Julius Nwosu (nwosu.julius@epa.gov), EPA
Region 10.

Publications

New Drinking Water Health Advisories for PFAS
Chemicals

As part of EPA's commitment to safeguard com-
munities from per- and polyfluoroalkyl substances
(PFAS), EPA has issued final health advisories for
hexafluoropropylene oxide (HFPO) dimer acid and
its ammonium salt (together referred to as "GenX
chemicals") and perfluorobutane sulfonic acid and
its related compound potassium perfluorobutane sul-
fonate (together referred to as "PFBS"), and interim
updated drinking water health advisories for perfluo-
rooctanoic acid (PFOA) and perfluorooctane sulfonate
(PFOS). The interim health advisories for PFOA and
PFOS are intended to provide information to states
and public water systems until the National Primary
Drinking Water regulation for PFAS takes effect. All
four of these health advisories provide drinking water
system operators, and state, tribal, and local officials
who have the primary responsibility for overseeing
these systems, with information on the health risks
of these chemicals, so they can take the appropriate
actions to protect their residents. To help communities

on the front lines of PFAS contamination, EPA has
also announced $1 billion in fiscal year 2022 grant
funding through the Bipartisan Infrastructure Law
Emerging Contaminants in Small or Disadvantaged
Communities Grant Program.

Press release: https://www.epa.gov/newsreleases/

epa-announces-new-drinking-water-health-

advisories-pfas-chemicals-l-billion-bipartisan

More information on the health advisories:
https://www.epa.gov/sdwa/epa-non-regulatory-health-
based-drinking-water-levels

EPA ORD's Draft Strategic Research Action Plans
for Fiscal Years 2023-2026

EPA ORD's strategic research planning ensures a
collaborative, transparent, and highly coordinated
research program that delivers the data and infor-
mation that EPA program and regional offices need,
while also providing a suite of innovative models,
interactive dashboards, tools, and other resources
that help tribes, states, local communities, and other

FSTRAC Newsletter ~ Spring 2022


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partners protect their environment, safeguard public
health, and increase human well-being. EPA ORD's
planning aligns the following six national research
programs to collectively target the science and engi-
neering needed to provide the scientific foundation for
EPA to execute its mandate to protect human health
and the environment:

•	Air, Climate, and Energy (ACE)

•	Chemical Safety for Sustainability (CSS)

•	Health and Environmental Risk Assessment
(HERA)

•	Homeland Security (HS)

•	Safe and Sustainable Water Resources (SSWR)

•	Sustainable and Healthy Communities (SHC)

EPA ORD's draft Strategic Research Action Plans for
fiscal years 2023-2026 for these six national research
programs are available on EPA's Strategic Research
Planning Website.

EPA Region 10's Upcoming Publication on
Daphnia magna Transcriptomics for Water
Quality Monitoring

With the presence of complex and dynamic contam-
inant mixtures in surface waters, a major challenge
is accurately and sufficiently measuring chemical
exposures and biological effects. Dr. Mark Jankowski
in EPA Region 10 and his team examined the

performance of the Daphnia magna transcriptome to
detect distinct responses in laboratory (well) waters,
wetland waters, and stormwaters in Minnesota. This
publication from Dr. Mark Jankowski in EPA Region
10 will be released in the coming weeks.

Jankowski, M.D., D.J. Fairbairn, J.A. Bailer, B.M.
Westerhoff, and H.L. Schoenfuss. In press. Daphnia
magna transcriptomics for water quality moni-
toring using the Daphnia magna transcriptome
to distinguish water source: wetland and storm-
water case studies. Environmental Toxicology and
Chemistry.

Minnesota Department of Health

MDH staff co-authored a quantitative microbial
risk assessment (QMRA) using data from a 2-year
pathogen occurrence study conducted in public water
supply wells in Minnesota. Risk estimates indicate
that annual risk for all pathogens combined was
relatively high, however, the average daily doses of
individual pathogens were low.

Burch, TR., J.P. Stokdyk, N. Rice, A.C. Anderson,
J.F. Walsh, S.K. Spencer, A.D. Firnstahl, and M.A.
Borchardt. 2022. Statewide Quantitative Microbial
Risk Assessment for Waterborne Viruses, Bacteria,
and Protozoa in Public Water Supply Wells in
Minnesota. Environmental Science & Technology.
56(10): 6315-6324.

https://doi.org/10.1021/acs.est.lc06472.

Burkhardt, J., N. Burns, D. Mobley, J. Pressman, M. Magnuson, and T. Speth. 2022. Modeling PFAS removal
using granular activated carbon for full-scale system design, journal of Environmental Engineering.
148(3):04021086. https://doi.org/10.1061/(ASCE)EE.1943-7870.0001964.

Montagnino, E., D. Lytle, J. Rose, D. Cwiertny, and A. Whelton. 2022. School and childcare center drinking
water: copper chemistry, health effects, occurrence, and remediation. AWWA Water Science 4(2):el270.
https://doi.org/10.1002/aws2.1270.

Pfaller, S., D. King, J. Mistry, and M. Donohue. 2022. Occurrence revisited: Mycobacterium avium and
Mycobacterium intracellular in potable water in the USA. Applied Microbiology and Biotechnology. 106:2715—
2727. https://doi.org/10.1007/s00253-022-11849-7.

Speth, T., M. Crimi, Z. Chowdhury, E. Dickenson, J. Guelfo, D. Knappe, J. Liu, and A. Leeson. 2022. PFAS are
forever? The state of the science and research needs for analyzing and treating PFAS-laden water. AWWA Water
Science 4(2):el276. https://doi.org/10.1002/aws2.1276.

FSTRAC Newsletter ~ Spring 2022


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Upcoming Events and Conferences
Upcoming FSTRAC Webinar

The next FSTRAC Webinar is scheduled for fall

2022.	Additional details, including the date of the
next FSTRAC Webinar, will be provided to FSTRAC
members in the coming weeks.

SETAC North America Annual Meeting -
Society of Environmental Toxicology and
Chemistry

SETAC will be holding its 43rd annual North America
meeting on November 13-17, 2022 in Pittsburgh
Pennsylvania. Additional information is provided on
the SETAC website: https://pittsburgh.setac.org/

SOT Annual Meeting - Society of
Toxicology

SOT will be holding its 62nd Annual Meeting and
ToxExpo in Nashville, Tennessee on March 19-23,

2023.	Additional information is provided on the SOT
website:

https://www.toxicology.org/events/am/AM2023/
index, asp

SRA Annual Meeting - Society for Risk
Analysis

SRA will be holding its 2022 annual meeting in
Tampa, Florida from December 4-8, 2022. Additional
information is provided on the SRA website:
https://www.sra.org/events-webinars/annual-meeting/

ASM Microbe - American Society for
Microbiology

ASM Microbe will be holding its annual meeting
in Houston, Texas, on June 15-19, 2023. Additional
information will be provided on the ASM website:
https://asm.org/Events/ASM-Microbe/Home

ECOS - Environmental Council of the States

The ECOS will be holding its 2022 ECOS Fall Meeting
on September 19-21, 2022. Additional information is
provided on the ECOS website:
https://www.ecos.org/events/.

ITRC Webinar - Interstate Technology
Regulatory Council

ITRC will be holding a webinar on Soil Background
and Risk Assessment (SBR) on June 23, 2022.
Additional information is provided on the ITRC web-
site: https://clu-in.org/conf/itrc/SBR/

Minnesota Department of Health

Each year the Health Risk Assessment Unit's
Contaminants of Emerging Concern (CEC) Initiative
hosts a stakeholder meeting to discuss and solicit
input on CEC activities. This year the meeting will be
held virtually on Wednesday, August 24, 2022, at 3
p.m. (CST). The meeting is open to the public. Details
regarding registration and a preliminary agenda will
be coming soon to MDH's CEC website at
https://www.health.state.mn.us/cec.

Children's Environmental Health: A
Workshop on Future Priorities for
Environmental Health Sciences

The National Academies of Sciences, Engineering,
and Medicine's Board on Population Health and
Public Health Practice, Board on Environmental
Studies and Toxicology, and Board on Children Youth
and Families are organizing a virtual public work-
shop to discuss the state of science and knowledge
about Children's environmental health. This virtual
workshop will take place on August 1-4, 2022, with
half-day sessions starting mid-day Eastern Time.
Additional information is provided on the National
Academies website.

EPA ORD Upcoming Events

EPA New Approach Methods (NAMs) Training
Program

The NAMs training program outlined in the NAMs
work plan to create courses and workshops for inter-
ested stakeholders is well underway. The NAMs
Training website is online with a wealth of easily
searchable information and training materials about
EPA NAMs research and tools.

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EPA Water Research Webinar Series

EPA is hosting this bimonthly webinar series to
share information on its Safe and Sustainable Water
Resources Research Program. For more information,
refer to the Online Schedule and Registration
webpage.

EPA ORD/OW Small Water Systems Monthly
Webinar Series

EPA ORD's Safe and Sustainable Water Resources
Research Program and the Office of Water (OW) are
hosting this monthly webinar series to communicate
current small drinking water systems research along
with agency priorities. For more information, refer to
the Online Schedule and Registration webpage.

EPA ORD/OW Annual Drinking Water Workshop:
Small Systems Challenges and Solutions

This free annual workshop is a collaboration between
ORD and OW in partnership with the Association of
State Drinking Water Administrators (ASDWA). The

19th Annual EPA Drinking Water Workshop will be
held on August 29, 2022-September 1, 2022. Refer to
Information on 19th Annual (2022) Workshop.

EPA Computational Toxicology Communities of
Practice Webinars

Monthly Computational Toxicology Communities of
Practice webinars are held at EPA's RTP campus on
the fourth Thursday of the month from 11:00 a.m.-
12:00 p.m., Eastern Time. For more information, refer
to the Computational Toxicology Communities of
Practice webpage.

EPA Tools and Resources Training Webinar Series

EPA ORD hosts this public webinar series to provide
in-depth overviews and step-by-step tutorials
on popular EPA science-based models and tools.

These webinars are typically held bimonthly on the
first Thursday from 3:00-4:00 p.m., Eastern Time.
For more information, refer to the EPA Tools and
Resources Webinar Series webpage.

FSTRAC Newsletter ~ Spring 2022


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