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Contaminant Candidate List (CCL) Regulatory Determinations. Water Quality Training Roundtable 2000 February 7, 2000. SDWA History. 1974 : Establish basic program and National Primary Drinking Water Regulations

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contaminant candidate list ccl regulatory determinations

Contaminant Candidate List (CCL) Regulatory Determinations

Water Quality Training Roundtable 2000

February 7, 2000

sdwa history
SDWA History

1974: Establish basic program and National Primary Drinking Water Regulations

1986: Accelerate pace of drinking water standards; 83 by 1989 and 25 every 3 years

1996: Risk based priority setting

  • Target contaminants posing greatest threat
  • Emphasis on sound science and data collection
our mandates sdwa statutes regulation determination 1412 b 1 b ii
Our mandates - SDWA Statutes: Regulation Determination 1412(b)(1)(B)(ii)
  • Not later than 5 years after the date of enactment (by Aug 6, 2001) and every five years thereafter.
  • For not fewer than 5 contaminants.
  • After notice of the preliminary determination and opportunity for public comment.
  • A determination not to regulate a contaminant shall be considered final agency action and subject to judicial review.
our mandates sdwa statutes regulation health advisories and other actions 1412 b 1 e
Our mandates - SDWA Statutes: Regulation, Health Advisories and Other Actions 1412(b)(1)(E)
  • Propose MCLGs and NPDWRs no later that 24 months after the determination to regulate and may publish them concurrently.
  • Publish MCLGs and promulgate NPDWRs within 18 months after the proposal thereof, and may extend the deadline for such promulgation for up to 9 months.
  • Publish health advisories (which are not regulations) or take other appropriate actions for contaminants not subject to any NPDWRs.
developing the ccl
Developing the CCL
  • 1996 SDWA - establish a list of contaminants to aid in priority setting for Agency’s drinking water program
  • Consultation with stakeholders and National Drinking Water Advisory Council
  • Public water utilities, environmental and public interest groups, state regulatory agencies, public health offices
slide6

Expert Panel

Public Comment

~25 Microbes

How Were Contaminants Identified?

Present in water

at levels of public

health concern

No

260 Chemical

Contaminants

Yes

Presence likely

Production

Release

Persistence

Mobility

Include on

the CCL

50 Chemical

10 Microbes

Yes

High

Relative Health Risk

No

Low

when was ccl finalized
When was CCL Finalized?
  • Draft CCL in October 1997 for public comment
    • 71 contaminants: 13 microbes, 58 chemicals
    • 71 comments
  • Final CCL in March 1998
    • 60 contaminants: 10 microbes, 50 chemicals
ccl purpose
CCL Purpose
  • A list of contaminants not subject to NPDWR, known to occur, that may require regulation.
  • Primary source of priority contaminants for dw program.
    • Focus and prioritize research agenda (Research Strategy)
    • Source for selection of contaminants to monitor (UCMR)
    • Make regulatory determinations for at least 5 contaminants by August 2001 and every 5 years after
slide9

CCL Priorities and Actions

2001 Decision

Actions

CCL

Regulatory

Determination

Priorities: 12

Regulate

Further

.

Don't Regulate

Analysis

Other (guidance)

Research

Health, Treatment, Analytical Methods

Research &

Next

Occurrence

CCL

Priorities: 48

(2003)

Occurrence Data

Collection

slide10

CCL Activities

Research and

Occurrence

Needs

Regulatory

Determinations

Future CCLs

  • CCL Research Strategy
  • UCMR Data Collection
  • Setting Priorities for Drinking Water Contaminants, NRC
  • NDWAC Working Group
  • Health Effects and Occurrence Data Analysis
  • Identifying Future Drinking Water Contaminants, NRC
  • NRC Study
  • AWWARF Study
  • NCOD Development
  • Emerging pathogens
slide11

Reg Determination Priorities

Naphthalene

Hexachlorobutadiene

Acanthamoeba (guidance)

1,3-dichloropropene

Aldrin

Dieldrin

Metolachlor

Metribuzin

Sodium (guidance) Boron

Manganese Sulfate

sdwa criteria to regulate 1412 b 1 a
SDWA Criteria to Regulate (1412(b)(1)(A))

Publish MCLG and promulgate NPDWRs if the Administrator determines that:

(i) The contaminant may have an adverse effect on the health of persons;

(ii) The contaminant is known to occur or there is substantial likelihood that the contaminant will occur in public water systems with a frequency and at levels of public health concern; and

(iii) Regulation of the contaminant presents a meaningful opportunity for health risk reduction for persons served by public water systems.

what is our approach in making determinations
What is our Approach in making Determinations?
  • NRC report: “Setting Priorities for Drinking Water Contaminants”
  • Stakeholder meetings
  • AWWRF and NDWAC efforts - Approaches for selecting contaminants and recommended protocols for making reg determinations
slide14

Timeline

Finalize Determinations in FR

Propose Determinations in FR

Public Comment

4/2001

8/2001

1/2000

Stakeholder Input

Evaluate Data

Prepare Support Documents

slide15

97

98

99

00

01

02

03

04

05

06

SDWA Schedule

Research & Occurrence Data Collection for CCL1 contaminants

CCL1

Feb 98

CCL2

Feb 03

Final Rule(s)

Feb 05

Regulatory Determinations

Aug 2001

RegDeterm’ns

Proposed rule(s)

Aug 03

Research & Occurrence Data Collection for CCL2 contaminants

feedback
Feedback
  • Which, if any, require attention?

metolachlor, aldrin, dieldrin, 1,3 dichloropropene, metribuzin, acanthomeoba, sulfate, sodium, naphthalene, boron, manganese and hexachlorobutadiene

  • What criteria to regulate should we be looking at?
  • Which unregulated contaminants, if any, are you most concerned about?
  • Recommendations?
slide17

Information or Questions

Dan Olson

USEPA Office of Ground Water and Drinking Water

202-260-6269

olson.daniel@epa.gov