1 of 1
HOUSE DOCKET, NO. 2605 FILED ON: 1/16/2025
HOUSE . . . . . . . . . . . . . . . No. 1020
The Commonwealth of Massachusetts
_________________
PRESENTED BY:
Edward R. Philips
_________________
To the Honorable Senate and House of Representatives of the Commonwealth of Massachusetts in General
Court assembled:
The undersigned legislators and/or citizens respectfully petition for the adoption of the accompanying bill:
An Act to improve the review and regulation of emerging contaminants on public water systems.
_______________
PETITION OF:
NAME:DISTRICT/ADDRESS :DATE ADDED:Edward R. Philips8th Norfolk1/16/2025 1 of 7
HOUSE DOCKET, NO. 2605 FILED ON: 1/16/2025
HOUSE . . . . . . . . . . . . . . . No. 1020
By Representative Philips of Sharon, a petition (accompanied by bill, House, No. 1020) of
Edward R. Philips relative to emerging contaminants on public water systems. Environment and
Natural Resources.
[SIMILAR MATTER FILED IN PREVIOUS SESSION
SEE HOUSE, NO. 880 OF 2023-2024.]
The Commonwealth of Massachusetts
_______________
In the One Hundred and Ninety-Fourth General Court
(2025-2026)
_______________
An Act to improve the review and regulation of emerging contaminants on public water systems.
Be it enacted by the Senate and House of Representatives in General Court assembled, and by the authority
of the same, as follows:
1 Section 160 of Chapter 111 of the Massachusetts General Laws shall be amended to
2include the following:
3 SECTION 1. For purposes of this act, Maximum Contaminant Level or MCL means the
4maximum permissible level of a contaminant in water which is delivered to any user of a public
5water system. Maximum Contaminant Level Goal or MCLG means the level of a contaminant in
6drinking water at or below which there is no known or expected risk to health. MCLGs allow for
7a margin of safety.
8 SECTION 2. To address the potential for adverse human health impacts from the
9presence of potentially toxic substances in the public water supplies of the Commonwealth, and 2 of 7
10to establish science-based processes and procedures for assessing the risks presented by such
11substances and a cost-benefit analysis to determine the practicality and efficacy of operational
12and remedial actions with respect to the substances, there shall be a Science Advisory Board to
13facilitate timely and accurate toxicological assessments of contaminants of concern, receipt of
14comments from PWS, public health, municipal, and industry interests regarding the burdens of
15implementing any new Health Advisory Maximum Contaminant Level Goal (MCLG), or MCL,
16and reporting formal findings to the MassDEP in connection with any regulatory effort to
17identify and evaluate whether certain contaminants of concern have such an adverse impact on
18human health that they should be regulated as contaminants.
19 SECTION 3. Members of the Science Advisory Board will be appointed by the
20Governor for a term of 5 years. The Science Advisory Board shall consist of 13 members; 6
21positions will be permanent organization members and 7 positions will be at-large members.
22Each of the following 6 permanent organization members shall name a representative to serve a
235-year term: 1 of whom shall be a representative of the MassDEP Office of Research and
24Standards (who shall co-chair the Board); 1 of whom shall be a representative of the MA
25Department of Public Health (who shall co-chair the Board); 1 of whom shall be a representative
26of the MassDEP Drinking Water Program; 1 of whom shall be a representative of the Mass
27Water Works Association; 1 of whom shall be a representative of the Massachusetts Municipal
28Association; and 1 of whom shall be a representative of the Massachusetts Association of Health
29Boards. The Governor shall appoint representatives for the 7 at-large seats on the Science
30Advisory Board after receiving nominations from interested individuals or groups representing
31the following: 1 of whom shall be an epidemiologist affiliated with an accredited academic
32institutions or local hospital; 1 of whom shall be a a toxicologist credentialed by the American 3 of 7
33Board of Toxicology; 1 of whom shall be a representative of a community health organization; 1
34of whom shall be a representative of a national environmental health organization or its local
35affiliate; 1 of whom shall be a representative from Massachusetts Chemistry & Technology
36Alliance, Inc.; 1 of whom shall be a representative from a consumer advocate group; and 1 of
37whom shall be a representative of an environmental advocacy group.
38 SECTION 4. The meetings of the Science Advisory Board shall be convened in
39accordance with 940 CMR 29.00.
40 SECTION 5. To regulate a substance as a contaminant under 310 CMR 22.00,
41MassDEP and the Science Advisory Board must both make a proposed finding that the
42substance: (a) may have an adverse human health effect; (b) that the contaminant is known to
43occur, or there is substantial likelihood it will occur, in PWSs with a frequency and at levels of
44public health concern; (c) and that there is an opportunity to reduce significant health risks to
45people served by a PWS. The Science Advisory Board’s findings must be “based on the best
46available public health information.”
47 SECTION 6. As part of its formal proposed finding, the Science Advisory Board shall
48only consider scientific studies that have been peer-reviewed and published. The Science
49Advisory Board’s finding must include a detailed analysis of the studies that were reviewed
50during the Science Advisory Board’s deliberation. This summary must articulate the reasons the
51Science Advisory Board included or excluded any study presented to them.
52 SECTION 7. The Science Advisory Board’s proposed finding shall include: (i) a
53recommendation for a MCLG, to establish the level of a contaminant in drinking water below
54which there is no known or expected risk to health; (ii) recommendation for a MCL for the 4 of 7
55contaminant; and (iii) a determination whether the proposed finding will achieve the objectives
56of protecting human health, including sensitive sub-populations, in a more cost-effective manner,
57or with greater net benefits, than other regulatory alternatives.
58 SECTION 8. The Science Advisory Board’s proposed finding shall be published on its
59website and in the Environmental Monitor. The public shall have at least 45 days after
60publication to review and comment on the proposed finding.
61 SECTION 9. Within 60 days of the close of the comment period, the Science Advisory
62Board shall: (a) publish a withdrawal of its proposed finding; (b) publish a response to comments
63and a revised proposed finding; or (c) publish a response to comments and a final determination
64in accordance with M.G.L. c. 30A.
65 SECTION 10. After publishing a final determination with any proceedings under M.G.L.
66c. 30A having been resolved to finality, the Science Advisory Board shall submit its final
67determination to MassDEP with its formal recommendation regarding the identification of a
68proposed contaminant of concern.
69 SECTION 11. MassDEP shall conduct its own independent assessment of the proposed
70contaminant and shall (a) present its preliminary determination to the Safe Drinking Water Act
71Advisory Committee, and (b) present its preliminary determination to a Small Business
72Advocacy Review Panel.
73 SECTION 12. A Small Business Advocacy Review (SBAR) panel shall be appointed by
74the Governor for review of any proposed Drinking Water Standard. The Small Business
75Advocacy Review Panel shall be made up of 11 members: 2 of whom shall be representatives of
76the Associated Industries of Massachusetts, 2 of whom shall be economists affiliated with 5 of 7
77accredited academic institutions, 3 of whom shall be representatives from the Massachusetts
78Municipal Association (1 of whom shall represent a small community, 1 of whom shall represent
79a medium sized community, and 1 of whom shall represent a large city), 1 of whom shall be a
80representative of the Massachusetts Office of Business Development, 1 of whom shall be a
81representative of the Executive Office of Administration and Finance; 1 of whom shall be a
82representative of the Massachusetts Treasurers Office, and 1 of whom shall be a representative of
83the Massachusetts Water Works Association.
84 SECTION 13. The SBAR shall make an independent determination whether the
85proposed Drinking Water Standard will achieve the objectives of protecting human health,
86including sensitive sub-populations, in a more cost-effective manner, or with greater net benefits,
87than other regulatory alternatives.
88 SECTION 14. Following any review and comment by the Safe Drinking Water Act
89Advisory Committee and the SBAR, MassDEP shall publish the preliminary Determination on
90its website for review and comment by the public for a minimum of 60 days.
91 SECTION 15. Within 60 days of the close of the comment period, the MassDEP shall:
92(a) publish a withdrawal of its preliminary Determination; (b) publish a response to comments
93and a revised preliminary Determination; or (c) publish a response to comments and a final
94Determination in accordance with M.G.L. c. 30A.
95 SECTION 16. If MassDEP makes a formal Determination to regulate a contaminant,
96MassDEP must (a) publish a MCLG, to establish the level of a contaminant in drinking water
97below which there is no known or expected risk to health; and (b) establish a primary drinking
98water regulation (usually a MCL) within 2 years of deciding to regulate. 6 of 7
99 SECTION 17. The MCLG shall be determined by the Science Advisory Board and
100MassDEP at the level at which no known or anticipated adverse effects on the health of persons
101occur and which allows an “adequate margin of safety.” When determining an MCLG, the
102Science Advisory Board and MassDEP will consider the adverse health risk to sensitive
103subpopulations, including, but not limited to: (i) infants; (ii) children; (iii) the elderly; and (iv)
104those with compromised immune systems and chronic diseases.
105 SECTION 18. If it is determined that there is a sensitive subpopulation that is adversely
106impacted by the contaminant in a particular manner that is distinct from impacts to the general
107population, that subpopulation shall be identified specifically and a separate MCLG shall be set
108for this population in addition to a MCLG for the general population.
109 SECTION 19. The MCL(s) shall be set “as close as to the maximum contaminant level
110goal(s) as feasible” or a Treatment Technique could be established if MCL criteria is not met.
111 SECTION 20. In establishing a MCLG or a MCL, MassDEP must seek public comment
112and an analysis of the following: (i) Quantifiable and nonquantifiable health risk reduction
113benefits for which there is a factual basis in the rulemaking record to conclude that such benefits
114are likely to occur as the result of treatment to comply with each MCLG or MCL; (ii)
115Quantifiable and nonquantifiable health risk reduction benefits for which there is a factual basis
116in the rulemaking record to conclude that such benefits are likely to occur from reductions in co-
117occurring contaminants that may be attributed solely to compliance with the maximum
118contaminant level, excluding benefits resulting from compliance with other proposed or
119promulgated regulations; (iii) Quantifiable and nonquantifiable costs for which there is a factual
120basis in the rulemaking record to conclude that such costs are likely to occur solely as a result of 7 of 7
121compliance with the MCL, including monitoring, treatment, and other costs and excluding costs
122resulting from compliance with other proposed or promulgated regulations; (iv) The incremental
123costs and benefits associated with each alternative MCL considered; (v) The effects of the
124contaminant on the general population and on specifically identified groups within the general
125population such as infants, children, pregnant women, the elderly, individuals with a history of
126serious illness, or other subpopulations that are identified as likely to be at greater risk of adverse
127health effects due to exposure to contaminants in drinking water than the general population; (vi)
128Any increased health risk that may occur as the result of compliance, including risks associated
129with co-occurring contaminants; (vii) Other relevant factors, including the quality and extent of
130the information, the uncertainties in the analysis supporting subclauses (i) through (vi), and
131factors with respect to the degree and nature of the risk.
132 SECTION 21. If MassDEP establishes a MCLG or MCL level that is different from the
133recommendation in the Science Advisory Board’s final determination, MassDEP shall provide
134written documentation for public comment as to their reasoning.
135 SECTION 22. MassDEP shall prepare a health risk reduction and cost analysis
136(HRRCA) in support of any Massachusetts Drinking Water Standard.
137 SECTION 23. MassDEP must review its Drinking Water Standards every six years and
138revise if appropriate.