SAWS Smoke Tests Manholes for Aquifer Protection – San Antonio Water System

San Antonio Water System Initiates Smoke Testing to Protect Water Quality

San Antonio Water System (SAWS) has commenced a comprehensive smoke testing program to inspect sewer laterals across the Edwards Aquifer Recharge Zone, as mandated by the Texas Commission on Environmental Quality (TCEQ). The primary objective of this initiative is to identify sewer leaks and safeguard the quality of drinking water.

Smoke Testing Process

SAWS has enlisted the services of contractors, Burgess & Niple and RJN, to conduct street-by-street smoke testing in the recharge zone areas. During the testing, contractors will open sewer manholes to introduce a non-toxic smoke into sewer lines and laterals on private properties, including homes and businesses. If no defects are detected in the laterals, the smoke will only emerge from sewer vents on the roofs of buildings. However, if defects are found, smoke may be visible in yards.

The presence of smoke rising from sewer laterals will indicate the presence of a leak. Sewage leaks from private laterals over the recharge zone pose a significant risk to the water quality of the Edwards Aquifer.

Importance of Smoke Testing for Water Quality Protection

“Smoke testing is an essential component of our efforts to protect water quality,” stated Carlos Mendoza, SAWS Vice President of Distribution & Collection Operations. “We conduct this practice every five years, as mandated by TCEQ.”

Mendoza further emphasized the importance of customer awareness during the smoke testing process. He acknowledged that witnessing smoke emerging from rooftops and yards can be alarming, but assured customers that the smoke used is non-toxic.

Notification and Safety Measures

Prior to conducting the smoke testing, contractors will notify customers by leaving a doorhanger at each home. Additionally, notifications and updates will be posted on the social media platform, NextDoor.

It is not necessary for residents to be present during the smoke testing. However, to prevent smoke from entering buildings, homeowners are advised to run or pour water into all drains (e.g., sinks, toilets, baths, and showers) before the testing. Signs will be displayed in areas where contractors are working. In the event that a defect is discovered, another door hanger will be left behind, and a flag will be placed in the area where smoke was observed. A detailed letter will be mailed to provide further information.

SAWS contractors and personnel will be easily identifiable by their uniforms and identification badges. SAWS will also coordinate with the San Antonio Fire Department throughout the smoke testing process.

SDGs, Targets, and Indicators

1. SDG 6: Clean Water and Sanitation

   • Target 6.3: By 2030, improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater and substantially increasing recycling and safe reuse globally.
   • Indicator: The smoke testing of sewer laterals aims to identify sewer leaks and protect drinking water quality, which is directly related to improving water quality and reducing pollution.

2. SDG 11: Sustainable Cities and Communities

   • Target 11.6: By 2030, reduce the adverse per capita environmental impact of cities, including by paying special attention to air quality and municipal and other waste management.
   • Indicator: The smoke testing of sewer laterals helps to identify sewer leaks, which can contribute to the adverse environmental impact of cities. By identifying and fixing these leaks, the city can reduce pollution and improve waste management.

Table: SDGs, Targets, and Indicators

Source: saws.org