Skip to Main Content

Public Sanitation Infrastructure

Dr. Tuckson speaks with Tony Parrott, executive director, and Angela Akridge, chief engineer, at Louisville Metropolitan Sewer District.
Season 13 Episode 6 Length 26:39 Premiere: 10/15/17

About

Join host Dr. Wayne Tuckson, a colorectal surgeon, as he interviews experts from around the state to discuss health topics important to Kentuckians.


Funding for this program is made possible in part by:


About the Host

A native of Washington, D.C., Dr. Wayne Tuckson is a retired colon and rectal surgeon based in Louisville. For more than 20 years, he has served as host for Kentucky Health, a weekly program on KET that explores important health issues affecting people across the Commonwealth. A graduate of Howard University School of Medicine, Tuckson is a past president of the Greater Louisville Medical Society and is a recipient of the Community Service Award from the Kentucky Medical Society, the Thomas J. Wallace Award for “Leadership in Promoting Health Awareness and Wellbeing for the Citizens of Jefferson County” given by the City of Louisville and the Lyman T. Johnson Distinguished Leadership Award given by the Louisville Central Community Centers.

Sewage Plants: The Unsung Heroes of Health

The first evidence of human-designed sanitation systems dates back to over 2000 B.C., but the major advances in public sewage treatment are much more recent. Providing a consistently clean water supply is essential to maintaining human health, as contaminated water can cause malnutrition, spread disease, and when flooding occurs, make a public health emergency worse.

On this episode of Kentucky Health, host Dr. Wayne Tuckson speaks with the CEO and chief engineer of Louisville’s public sewage treatment utility to learn about the process of wastewater disposal and about the growing stress many systems are encountering due to population growth and aging infrastructure.
 

Tony Parrott is the CEO of the Louisville Metropolitan Sewer District (MSD), and Angela Akridge is chief engineer for the utility. Both became interested in sewage disposal while attending college and find that their work is valuable to society and interesting as well.

The Louisville MSD manages five wastewater treatment plants and has a cap on the rates it can charge, Parrott says. It works closely with Louisville Water Company, and recently, Mayor Greg Fischer rolled out the One Water initiative, which is designed to foster collaboration between the two public utilities and allow them to consolidate some services and share buildings.

How the Sewage Treatment System Works
According to Akridge, when waste and water is flushed down a household’s toilet or sent down the garbage disposal, it travels through the sewer system to one of the five treatment facilities. Two of them discharge into the Ohio River, and the other three into adjacent local streams in Jefferson County.

When the wastewater reaches the facility, it flows through a series of screens to remove the solid material. Then, the liquid goes through what Akridge calls “different forms of treatment, from settling to having what we call ‘bugs’ or microbes inserted into the waste stream so it can naturally break down the organic material. Some more settling, disinfecting – in this case with chlorine – and then we remove the chlorine before releasing it into the river.”

“Each facility has certain guidelines we have to meet in terms of water quality,” Parrott says. “And so we have a permit limit for ammonia, we have a permit limit for solids, we have permit limits for other types of chemicals, so we have to meet those, and those are issued by the state. We have to meet those quality standards of discharge every day.”

As for the solid waste extracted from the wastewater stream, Akridge says “ultimately, it will be removed and either go through the process whereby we produce bio-solids for land application, or take it to the landfill for disposal.”

Much of the MSD sewer system grid dates back to the 19th century, especially the parts servicing the downtown area, and Akridge says that prior to the late 1950s the system was a storm water drainage system. Over the past 60 years, and especially after the Clean Water Act was passed in 1972, public utilities have vastly expanded their water treatment facilities to meet government mandates, with resulting improvements in water quality leading to better public health.

The Challenge of Upgrading Infrastructure
The current MSD system is designed to handle both wastewater and, during major rain events, excess storm water as well. But the system is strained, Parrott says, and money for repairs is hard to come by.

Included in this program were a series of slides depicting some of the older pipes in the MSD system, and a video documenting recent damage to a major sewer pipe on Main Street in downtown Louisville. In addition, we see a map of the MDS system in Jefferson County that details the perilous state of much of the infrastructure, especially the downtown pipes that are over 100 years old.

One slide shows a decaying sewer on Broadway downtown, built in 1867. “We have sewers like that that are in operation and are crumbling below our streets, and crumbling below our feet, and this is not just a Louisville or Kentucky issue, this is a national issue,” Parrott says. He adds that MSD treats about nine or ten “cave-ins” a month throughout the grid.

Akridge explains how MSD engineers handle a major repair such as the recent one on Main Street. Since most of the sewer pipes can’t fully be shut down because they are constantly needed, her team “repairs in place” by temporarily re-routing the water from the damaged pipe and sending it on to the treatment facility.

The recent pipe that ruptured on Main Street “was not designed to last as long as we’ve been using it,” Akridge says. It handles about 35 million gallons of wastewater on a dry day. Most repairs call for a “slip lining” to be placed inside the damaged pipe. Akridge explains that the lining allows for an uninterrupted flow to resume and also protects the pipe from further damage.

In addition to the routine repairs, Parrott says that MSD is currently in the midst of a major construction project to build several underground basins designed to catch excess storm water. “We’re currently under a federal consent decree to minimize all of the overflow that is escaping from the system and going into the river or overflowing into the streets,” he explains. “So that’s why you see us spending a lot of money on large combined sewer overflow basins.” Two currently under construction are in the Shawnee Park area in west Louisville and in the Butchertown area east of downtown. The MSD is also preparing to build a deep tunnel along the Ohio River that will run about 2.7 miles, 200 feet underground, and feature a pipe 24 feet in diameter.

These 20- to 30-million gallon basins “hold the storm water, and once the storm subsides, we can pump it back into the system and send it to the treatment plant,” Parrott says. In addition to capturing overflow, the basins can also be used to divert wastewater in case of a breakdown elsewhere in the system, as occurred on Main Street.

The ongoing demands for wastewater treatment, combined with MSD’s responsibility for 16 major flood pump stations along the Ohio River, will require more investment than is currently being made by local, state, and federal government, Parrott says. When asked what citizens can do to help in their everyday waste disposal, he warns that certain products seemingly designed for flushing down the toilet – clean wipes and baby wipes in particular – actually clog up pipes.

“It creates mechanical problems that shut down our pumps from operating and we have to do a lot of maintenance on that,” he says. “So there’s a huge campaign nationally to make sure folks understand the things you cannot flush or shouldn’t flush, because it is impacting our system.”

Sponsored by:

Season 13 Episodes

Public Health in Kentucky

S13 E25 Length 29:24 Premiere Date 04/15/18

Pain Treatment in the Age of Opioid Addiction

S13 E24 Length 28:57 Premiere Date 04/08/18

The Louisville Health Equity Report

S13 E23 Length 28:09 Premiere Date 04/01/18

Smoking in Kentucky: Hidden Cost Obvious Impact

S13 E22 Length 28:54 Premiere Date 03/25/18

Kidney Function and Renal Disease

S13 E21 Length 28:32 Premiere Date 02/25/18

Brain Tumors

S13 E20 Length 28:44 Premiere Date 02/18/18

Gastroenterology and Motility

S13 E19 Length 27:37 Premiere Date 02/11/18

Many Years, Many Medicines, Many Problems

S13 E18 Length 28:38 Premiere Date 02/04/18

A Day in the Life of an Ophthalmologist

S13 E17 Length 27:32 Premiere Date 01/28/18

A Day in the Life of a Thoracic Surgeon

S13 E16 Length 27:27 Premiere Date 01/21/18

Incontinence and Female Sexual Dysfunction

S13 E15 Length 27:51 Premiere Date 01/14/18

Building Healthy Communities

S13 E14 Length 28:44 Premiere Date 01/07/18

Music and Medicine

S13 E13 Length 28:34 Premiere Date 12/17/17

Health Ministries

S13 E12 Length 28:29 Premiere Date 12/10/17

Preventing Heart Disease

S13 E11 Length 28:40 Premiere Date 11/19/17

Prostate Cancer

S13 E10 Length 28:42 Premiere Date 11/12/17

Skin Diseases and Conditions

S13 E9 Length 26:22 Premiere Date 11/05/17

Treating Drug Addiction

S13 E8 Length 28:12 Premiere Date 10/29/17

Importance of Anesthesia

S13 E7 Length 28:34 Premiere Date 10/22/17

Public Sanitation Infrastructure

S13 E6 Length 26:39 Premiere Date 10/15/17

Health and the Outdoors

S13 E5 Length 28:47 Premiere Date 10/08/17

Universal Health Insurance

S13 E4 Length 28:43 Premiere Date 10/01/17

Strategies for Quitting Tobacco

S13 E3 Length 26:38 Premiere Date 09/25/17

Rural Physicians' Perspectives

S13 E2 Length 26:53 Premiere Date 09/17/17

Health Care in Rural Kentucky

S13 E1 Length 27:38 Premiere Date 09/12/17

See All Episodes

caret down

TV Schedules

Jump to Recent Airdates

Upcoming

Markey Cancer Center: Changing Cancer Treatment in Kentucky and the World - S19 E18

Surgical oncologist Dr. Mark Evers discusses new trends in cancer treatment. A 2024 KET production.

  • Friday March 1, 2024 1:30 pm ET on KETKY
  • Friday March 1, 2024 12:30 pm CT on KETKY
  • Sunday March 3, 2024 12:30 am ET on KETKY
  • Saturday March 2, 2024 11:30 pm CT on KETKY
  • Sunday March 3, 2024 9:00 am ET on KETKY
  • Sunday March 3, 2024 8:00 am CT on KETKY

Cannabis: The Hype, the Reality, and the Potential - S19 E5

The study of marijuana is hampered by state and federal regulations, and limited funding. What data is known about safety, efficacy and long-term effects? Dr. Shanna Babalonis talks about the changing role of marijuana in society and healthcare. A 2023 KET production.

  • Sunday March 3, 2024 5:30 pm ET on KETKY
  • Sunday March 3, 2024 4:30 pm CT on KETKY
  • Monday March 4, 2024 2:00 pm ET on KET2
  • Monday March 4, 2024 1:00 pm CT on KET2
  • Wednesday March 6, 2024 11:00 am ET on KETKY
  • Wednesday March 6, 2024 10:00 am CT on KETKY
  • Friday March 8, 2024 1:30 pm ET on KETKY
  • Friday March 8, 2024 12:30 pm CT on KETKY
  • Sunday March 10, 2024 12:30 am ET on KETKY
  • Saturday March 9, 2024 11:30 pm CT on KETKY
  • Sunday March 10, 2024 9:00 am ET on KETKY
  • Sunday March 10, 2024 8:00 am CT on KETKY

Alzheimer's Disease and Related Dementia - S19 E6

Neurologist Dr. Gregory Cooper talks about dementia and Alzheimer's disease. A 2023 KET production.

  • Sunday March 10, 2024 5:30 pm ET on KETKY
  • Sunday March 10, 2024 4:30 pm CT on KETKY
  • Monday March 11, 2024 5:30 am ET on KET2
  • Monday March 11, 2024 4:30 am CT on KET2
  • Monday March 11, 2024 2:00 pm ET on KET2
  • Monday March 11, 2024 1:00 pm CT on KET2
  • Wednesday March 13, 2024 11:00 am ET on KETKY
  • Wednesday March 13, 2024 10:00 am CT on KETKY
  • Friday March 15, 2024 1:30 pm ET on KETKY
  • Friday March 15, 2024 12:30 pm CT on KETKY
  • Sunday March 17, 2024 12:30 am ET on KETKY
  • Saturday March 16, 2024 11:30 pm CT on KETKY
  • Sunday March 17, 2024 7:00 am ET on KET2
  • Sunday March 17, 2024 6:00 am CT on KET2
  • Sunday March 17, 2024 9:00 am ET on KETKY
  • Sunday March 17, 2024 8:00 am CT on KETKY

Climate Change: A Change in Our Health - S19 E19

Meteorologist Tawana Andrew talks about how climate change is affecting our health. A 2024 KET production.

  • Sunday March 17, 2024 1:30 pm ET on KET
  • Sunday March 17, 2024 12:30 pm CT on KET
  • Sunday March 17, 2024 5:30 pm ET on KETKY
  • Sunday March 17, 2024 4:30 pm CT on KETKY
  • Monday March 18, 2024 2:00 pm ET on KET2
  • Monday March 18, 2024 1:00 pm CT on KET2
  • Wednesday March 20, 2024 11:00 am ET on KETKY
  • Wednesday March 20, 2024 10:00 am CT on KETKY
  • Friday March 22, 2024 1:30 pm ET on KETKY
  • Friday March 22, 2024 12:30 pm CT on KETKY
  • Sunday March 24, 2024 12:30 am ET on KETKY
  • Saturday March 23, 2024 11:30 pm CT on KETKY
  • Sunday March 24, 2024 7:00 am ET on KET2
  • Sunday March 24, 2024 6:00 am CT on KET2
  • Sunday March 24, 2024 9:00 am ET on KETKY
  • Sunday March 24, 2024 8:00 am CT on KETKY

RSV, COVID and Influenza - S19 E20

Infectious disease specialist Dr. Mark Burns discusses Respiratory Syncytial Virus (RSV), COVID-19 and influenza. A 2024 KET production.

  • Sunday March 24, 2024 1:30 pm ET on KET
  • Sunday March 24, 2024 12:30 pm CT on KET
  • Sunday March 24, 2024 5:30 pm ET on KETKY
  • Sunday March 24, 2024 4:30 pm CT on KETKY
  • Monday March 25, 2024 2:00 pm ET on KET2
  • Monday March 25, 2024 1:00 pm CT on KET2
  • Wednesday March 27, 2024 11:00 am ET on KETKY
  • Wednesday March 27, 2024 10:00 am CT on KETKY
  • Friday March 29, 2024 1:30 pm ET on KETKY
  • Friday March 29, 2024 12:30 pm CT on KETKY
  • Sunday March 31, 2024 12:30 am ET on KETKY
  • Saturday March 30, 2024 11:30 pm CT on KETKY
  • Sunday March 31, 2024 7:00 am ET on KET2
  • Sunday March 31, 2024 6:00 am CT on KET2
  • Sunday March 31, 2024 9:00 am ET on KETKY
  • Sunday March 31, 2024 8:00 am CT on KETKY

Controlling Stress - S19 E21

Clinical counselor Lauren Muir talks about ways to negate and control negative stressors. A 2024 KET production.

  • Sunday March 31, 2024 1:30 pm ET on KET
  • Sunday March 31, 2024 12:30 pm CT on KET
Jump to Upcoming Airdates

Recent

Markey Cancer Center: Changing Cancer Treatment in Kentucky and the World - S19 E18

  • Wednesday February 28, 2024 11:00 am ET on KETKY
  • Wednesday February 28, 2024 10:00 am CT on KETKY
  • Monday February 26, 2024 2:00 pm ET on KET2
  • Monday February 26, 2024 1:00 pm CT on KET2
  • Sunday February 25, 2024 5:30 pm ET on KETKY
  • Sunday February 25, 2024 4:30 pm CT on KETKY
  • Sunday February 25, 2024 1:30 pm ET on KET
  • Sunday February 25, 2024 12:30 pm CT on KET

Sustainability: Government, Corporate, and Public Cooperation - S19 E17

  • Sunday February 25, 2024 9:00 am ET on KETKY
  • Sunday February 25, 2024 8:00 am CT on KETKY
  • Sunday February 25, 2024 7:00 am ET on KET2
  • Sunday February 25, 2024 6:00 am CT on KET2
  • Sunday February 25, 2024 12:30 am ET on KETKY
  • Saturday February 24, 2024 11:30 pm CT on KETKY
  • Friday February 23, 2024 1:30 pm ET on KETKY
  • Friday February 23, 2024 12:30 pm CT on KETKY
  • Monday February 19, 2024 2:00 pm ET on KET2
  • Monday February 19, 2024 1:00 pm CT on KET2
  • Sunday February 18, 2024 5:30 pm ET on KETKY
  • Sunday February 18, 2024 4:30 pm CT on KETKY
  • Sunday February 18, 2024 1:30 pm ET on KET
  • Sunday February 18, 2024 12:30 pm CT on KET

Federally Qualified Health Centers: More Than a Safety Net - S19 E16

  • Sunday February 18, 2024 9:00 am ET on KETKY
  • Sunday February 18, 2024 8:00 am CT on KETKY
  • Sunday February 18, 2024 7:00 am ET on KET2
  • Sunday February 18, 2024 6:00 am CT on KET2
  • Sunday February 18, 2024 12:30 am ET on KETKY
  • Saturday February 17, 2024 11:30 pm CT on KETKY
  • Friday February 16, 2024 1:30 pm ET on KETKY
  • Friday February 16, 2024 12:30 pm CT on KETKY
  • Wednesday February 14, 2024 11:12 am ET on KETKY
  • Wednesday February 14, 2024 10:12 am CT on KETKY
  • Monday February 12, 2024 2:00 pm ET on KET2
  • Monday February 12, 2024 1:00 pm CT on KET2
  • Sunday February 11, 2024 5:30 pm ET on KETKY
  • Sunday February 11, 2024 4:30 pm CT on KETKY
  • Sunday February 11, 2024 1:30 pm ET on KET
  • Sunday February 11, 2024 12:30 pm CT on KET

Government Sponsored Health Insurance: Value and Promise - S19 E15

  • Sunday February 11, 2024 9:00 am ET on KETKY
  • Sunday February 11, 2024 8:00 am CT on KETKY
  • Sunday February 11, 2024 7:00 am ET on KET2
  • Sunday February 11, 2024 6:00 am CT on KET2
  • Sunday February 11, 2024 12:30 am ET on KETKY
  • Saturday February 10, 2024 11:30 pm CT on KETKY
  • Friday February 9, 2024 1:30 pm ET on KETKY
  • Friday February 9, 2024 12:30 pm CT on KETKY
  • Wednesday February 7, 2024 11:22 am ET on KETKY
  • Wednesday February 7, 2024 10:22 am CT on KETKY
  • Monday February 5, 2024 2:00 pm ET on KET2
  • Monday February 5, 2024 1:00 pm CT on KET2
  • Sunday February 4, 2024 5:30 pm ET on KETKY
  • Sunday February 4, 2024 4:30 pm CT on KETKY
  • Sunday February 4, 2024 1:30 pm ET on KET
  • Sunday February 4, 2024 12:30 pm CT on KET

The Unspoken and Misunderstood Stigma of Eating Disorders - S19 E14

  • Sunday February 4, 2024 9:00 am ET on KETKY
  • Sunday February 4, 2024 8:00 am CT on KETKY
  • Sunday February 4, 2024 7:00 am ET on KET2
  • Sunday February 4, 2024 6:00 am CT on KET2
  • Sunday February 4, 2024 12:30 am ET on KETKY
  • Saturday February 3, 2024 11:30 pm CT on KETKY
  • Friday February 2, 2024 1:30 pm ET on KETKY
  • Friday February 2, 2024 12:30 pm CT on KETKY
  • Wednesday January 31, 2024 11:00 am ET on KETKY
  • Wednesday January 31, 2024 10:00 am CT on KETKY
  • Monday January 29, 2024 2:00 pm ET on KET2
  • Monday January 29, 2024 1:00 pm CT on KET2
  • Sunday January 28, 2024 5:30 pm ET on KETKY
  • Sunday January 28, 2024 4:30 pm CT on KETKY
  • Sunday January 28, 2024 1:30 pm ET on KET
  • Sunday January 28, 2024 12:30 pm CT on KET

Bariatric Surgery: Surgical Intervention for a Chronic Illness - S19 E13

  • Sunday January 28, 2024 9:00 am ET on KETKY
  • Sunday January 28, 2024 8:00 am CT on KETKY
  • Sunday January 28, 2024 7:00 am ET on KET2
  • Sunday January 28, 2024 6:00 am CT on KET2
  • Sunday January 28, 2024 12:30 am ET on KETKY
  • Saturday January 27, 2024 11:30 pm CT on KETKY
Top

Explore KET