Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a)
A water system shall give public notice pursuant to this section and section
64465 if any of the following
occurs:
(1) Violation of the E.
coli MCL (as specified in section
64426.1(b))
(2) Violation of the MCL for nitrate,
nitrite, or total nitrate and nitrite, or when the water system fails to take a
confirmation sample within 24 hours of the system's receipt of the first sample
showing an exceedance of the nitrate or nitrite MCL;
(3) Violation of a Chapter 17 treatment
technique requirement resulting from a single exceedance of a maximum allowable
turbidity level if:
(A) The State Board
determines after consultation with the water system and a review of the data
that a Tier 1 public notice is required; or
(B) The consultation between the State Board
and the water system does not take place within 24 hours after the water system
learns of the violation;
(4) Occurrence of a waterborne microbial
disease outbreak, as defined in section
64651.91, or other waterborne
emergency, a failure or significant interruption in water treatment processes,
a natural disaster that disrupts the water supply or distribution system, or a
chemical spill or unexpected loading of possible pathogens into the source
water that has the potential for adverse effects on human health as a result of
short-term exposure;
(5) Other
violation or occurrence that has the potential for adverse effects on human
health as a result of short-term exposure, as determined by the State Board
based on a review of all available toxicological and analytical data;
(6) Violation of the MCL for perchlorate or
when a system is unable to resample within 48 hours of the system's receipt of
the first sample showing an exceedance of the perchlorate MCL as specified in
section 64432.3(d)(3);
(7) For chlorite:
(A) Violation of the MCL for
chlorite;
(B) When a system fails
to take the required sample(s) within the distribution system, on the day
following an exceedance of the MCL at the entrance to the distribution system;
or
(C) When a system fails to take
a confirmation sample pursuant to section
64534.2(b)(4);
or
(8) Violation of the
MRDL for chlorine dioxide; or when a system fails to take the required
sample(s) within the distribution system, on the day following an exceedance of
the MRDL at the entrance to the distribution system.
(b) As soon as possible within 24 hours after
learning of any of the violations in subsection (a) or being notified by the
State Board that it has determined there is a potential for adverse effects on
human health [pursuant to paragraph (a)(4), (5), or (6)], the water system
shall:
(1) Give public notice pursuant to
this section;
(2) Initiate
consultation with the State Board within the same timeframe; and
(3) Comply with any additional public notice
requirements that are determined by the consultation to be necessary to protect
public health.
(c) A
water system shall deliver the public notice in a manner designed to reach
residential, transient, and nontransient users of the water system and shall
use, as a minimum, one of the following forms:
(1) Radio or television;
(2) Posting in conspicuous locations
throughout the area served by the water system;
(3) Hand delivery to persons served by the
water system; or
(4) Other method
approved by the State Board, based on the method's ability to inform water
system users.
1. New
section filed 8-2-2006; operative 9-1-2006 (Register 2006, No. 31). For prior
history, see Register 2001, No. 17.
2. Amendment of subsections
(a)(4)-(5), new subsection (a)(6) and amendment of subsection (b) and NOTE
filed 9-18-2007; operative 10-18-2007 (Register 2007, No. 38).
3.
Amendment of section and NOTE filed 5-22-2012; operative 6-21-2012 (Register
2012, No. 21).
4. Change without regulatory effect amending
subsections (a)(3)(A)-(B), (a)(5), (b), (b)(2) and (c)(4) and amending NOTE
filed 6-2-2015 pursuant to section
100, title 1, California Code of
Regulations (Register 2015, No. 23).
5. Amendment of subsection
(a)(1) and repealer of subsections (a)(1)(A)-(B) filed 5-28-2021; operative
7-1-2021 (Register 2021, No. 22).
Note: Authority cited: Sections
116271,
116350
and
116375,
Health and Safety Code. Reference: Section
116450,
Health and Safety Code.
