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Posted on: November 7, 2018

TCEQ Public Notice for exceeding Turbidity Limit

November 7, 2018


RE: Required TCEQ Public Notice for exceeding Turbidity Limit


Dear Resident,


During the October 16-20, 2018 flood recovery, the City of Marble Falls Water Plant suffered through a challenging treatment period due to poor water quality in lake Marble Falls the city lost our raw water intake structure and its related chemical control systems. During this time, the City of Marble Falls was under a boil water notice. While the heavy rains were very welcomed and provided much needed relief from the drought, it has also presented the City with a challenge. The incoming raw water turbidity was extremely high and full of silt making it overload the system running on emergency backup pumps. The amount of trash in the lake was also excessive to the point of clogging the temporary intake restricting flow and damaging screens.   


As a result, we suffered an acute violation of our turbidity limit in the month of October.  According to TCEQ regulations, we are required to notify customers of this violation. The notice states that the turbidity levels, which is a measure of water clarity or cloudiness, exceeded treatment guidelines in the month of October. Excessive turbidity can result in inadequately treated water.


Please allow the following to serve as official notification as required by The Texas Commission on Environmental Quality (TCEQ).


Respectfully,


The City of Marble Falls Public Works Department




Notice of Acute Surface Water Turbidity Violation


The Texas Commission on Environmental Quality (TCEQ) sets minimum water quality standards for public drinking water. One of these standards is a turbidity limit. Turbidity by itself has no health effects. However, turbidity can interfere with disinfection and provide a medium for microbial growth. Turbidity may also indicate the presence of disease-causing organisms. These organisms include bacteria, viruses, and parasites that can cause symptoms such as nausea, cramps, diarrhea, and associated headaches. These symptoms can be particularly severe in people who are not as resistant to infections as most of the population. If you experience severe symptoms, please consult with your doctor to determine whether an alternative drinking water source should be used and what other actions you should take.

 

The City of Marble Falls public water system (#0270026) failed to meet the minimum treatment technique requirements on October 17-18, 2018. Specifically, the turbidity level of our treated water was above 1.0 Nephelometric Turbidity Unit during a period that Individual Filter Effluent (IFE) turbidity levels were above 2.0 NTU at one or more filters. As a result, the turbidity of the filtered water also exceeded 0.3 Nephelometric Turbidity Units in more than 5.0 percent of the measurements made during the month of October.


Corrective actions taken by the City of Marble Falls public water system has taken the following to prevent a recurrence of the violations:


  • Issued a Boil Water Notice October 17-20, 2018
  • Rented 2 pumps to help keep up with demand
  • Performed jar tests and other analysis in order to determine the best treatment techniques
  • Conferenced with surrounding municipal water treatment facilities to determine successful corrective actions being utilized to handle the poor raw water quality currently in the lake
  • Increased awareness and enforcement of current water restrictions in an effort to decrease usage and allow additional treatment time


If you want more information about the nature and significance of this violation, you may contact Jeff Felps, Water Plant Superintendent at 830-693-2827.


Please share this information with all the other people who drink this water, especially those who may not have received this notice directly (for example, people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public place or distributing copies by hand or mail.


Notice published by:

The City of Marble Falls

800 Third Street

Marble Falls, Texas

Jeffery Felps, Water Plant Superintendent

James Kennedy, Director of Public Works


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