Establishes maximum contaminant levels in drinking water for certain per- and polyfluoroalkyl substances (PFAS); sets such levels at no higher than 4 parts per trillion (ppt) for perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) and no higher than 10 parts per trillion (ppt) for perfluorononanoic acid (PFNA), perfluorohexane sulfonate (PFHxS), and hexafluoropropylene oxide dimer acid (HFPO-DA).
STATE OF NEW YORK
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8634
2025-2026 Regular Sessions
IN ASSEMBLY
May 22, 2025
___________
Introduced by M. of A. LEE -- read once and referred to the Committee on
Health
AN ACT to amend the public health law, in relation to establishing maxi-
mum contaminant levels and a hazard index in drinking water for
certain per- and polyfluoroalkyl substances (PFAS)
The People of the State of New York, represented in Senate and Assem-bly, do enact as follows:
1 Section 1. Section 1112 of the public health law is amended by adding
2 a new subdivision 12-a to read as follows:
3 12-a. a. The commissioner shall establish a maximum contaminant level
4 of:
5 (i) no higher than 4 parts per trillion (ppt) for perfluorooctane
6 sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA); and
7 (ii) no higher than 10 parts per trillion (ppt) for perfluorononanoic
8 acid (PFNA), perfluorohexane sulfonate (PFHxS), and hexafluoropropylene
9 oxide dimer acid (HFPO-DA).
10 b. The commissioner shall establish a hazard index to address cumula-
11 tive exposure to multiple per- and polyfluoroalkyl substances. The
12 hazard index shall include but not be limited to perfluorononanoic acid
13 (PFNA), perfluorohexane sulfonate (PFHxS), hexafluoropropylene oxide
14 dimer acid (HFPO-DA), and perfluorobutane sulfonate (PFBS).
15 c. The commissioner shall require that public water systems comply
16 with the requirements of the maximum contaminant levels and hazard index
17 required by this subdivision by May first, two thousand twenty-nine.
18 § 2. This act shall take effect one year after it shall have become a
19 law. Effective immediately, the addition, amendment and/or repeal of any
20 rule or regulation necessary for the implementation of this act on its
21 effective date are authorized to be made and completed on or before such
22 effective date.
EXPLANATION--Matter in italics (underscored) is new; matter in brackets
[] is old law to be omitted.
LBD06979-03-5
