Texas Administrative Code › Title 30 - ENVIRONMENTAL QUALITY › Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY › Chapter 290 - PUBLIC DRINKING WATER › Subchapter F - DRINKING WATER STANDARDS GOVERNING DRINKING WATER QUALITY AND REPORTING REQUIREMENTS FOR PUBLIC WATER SYSTEM › Section 290.122 - Public Notification

Current through Reg. 49, No. 28; July 12, 2024
(a) Tier 1
				  public notification requirements for acute violations or situations with
				  significant potential to have serious adverse effects on human health as a
				  result of short-term exposure which require a Tier 1 public notice as described
				  in this subsection. The owner or operator of a public water system must notify
				  persons served by their system of any maximum contaminant level (MCL), maximum
				  residual disinfectant level (MRDL), treatment technique violation, or other
				  situation that poses an acute threat to public health. Each notice required by
				  this section must meet the requirements of subsection (d) of this section.
(1) Situations that pose an acute threat to
				  public health include:
(A) a violation of the
Escherichia coli (E. coli)
MCL as described in
				  §290.109(g)(1)(A) - (D) of this title (relating to Microbial
				  Contaminants);
(B) an acute
				  turbidity issue at a treatment plant that is treating surface water or
				  groundwater under the direct influence of surface water, specifically:
(i) a combined filter effluent turbidity
				  level above 5.0 nephelometric turbidity units (NTU);
(ii) a combined filter effluent turbidity
				  level above 1.0 NTU at a treatment plant using membrane filters;
(iii) a combined filter effluent turbidity
				  level above 1.0 NTU at a plant using other than membrane filters at the
				  discretion of the executive director after consultation with the
				  system;
(iv) failure of a system
				  with treatment other than membrane filters to consult with the executive
				  director within 24 hours after a combined filter effluent reading of 1.0
				  NTU;
(v) failure of a system to
				  meet turbidity level, monitoring, and/or reporting requirements as described in
				  §
													290.111(i)(3)
				  of this title (relating to Surface Water Treatment); or
(vi) failure of a system to meet treatment,
				  turbidity level, monitoring, and/or reporting requirements as described in
				  §
													290.111(i)(4)
				  of this title;
(C) a
				  violation of the MCL for nitrate or nitrite as defined in §
												290.106(f)(2)
				  of this title (relating to Inorganic Contaminants);
(D) a violation of the acute MRDL for
				  chlorine dioxide as defined in §
												290.110(f)(5)(A)
				  or (B) of this title (relating to
				  Disinfectant Residuals);
(E)
				  occurrence of a waterborne disease outbreak;
(F) Detection of
E. coli
or
				  other fecal indicators in source water samples as specified in §
												290.109(h)(2)
				  of this title, which requires a public notice to be issued within 24 hours of
				  notification of the positive sample;
(G) other situations that have the potential
				  to have serious adverse effects on health as a result of short-term exposure;
				  and
(H) at the discretion of the
				  executive director, other situations may require a Tier 1 public notice based
				  on a threat to public health.