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South Hardin Veterinary Clinic

Our mission, at South Hardin Veterinary Clinic, is to provide exceptional veterinary care with every visit in a friendly and relaxed environment with focus on internal and preventative medicine, accurate diagnostics, and compassionate care for your pets and livestock. We strive to exceed our client’s expectations by treating all animals as if they were our own.





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Providing veterinary care to Union and surrounding areas!



  • Wellness and Preventative Medicine
  • Vaccinations and Microchipping
  • Routine Surgical Procedures
  • Dentistry
  • Ultrasonography
  • Digital Radiographs
  • Internal Medicine
  • Humane Euthanasia and Cremation Services
  • Emergency Services


  • Herd Health and Reproductive Services

  • Vaccinations and Deworming Protocols

  • Internal Medicine

  • Equine Dentistry

  • Interstate Health Certificates and Coggins

  • Emergency Services
Our Team
Dr. Casey Balvanz

Dr. Casey Balvanz

DVM, Owner

Dr. Casey graduated from lowa State University in 2009 with a Bachelors in Animal Science and then graduated from lowa State College of Veterinary Medicine in 2013. Read more...

Her favorite part of veterinary medicine is getting to know her clients and their pets and making them a part of her family. She also enjoys  preventative mixed animal medicine as well as educating her clients on how best to care for their pets, horses and livestock. In her spare time, she spends time with her family and friends as well as helping with the family cattle operation. She also enjoys fishing with her husband, quilting, riding horses and running.

Dr. Casey shares her life with many pets, including  Molly, the clinic cat. You may see her as a door greeter from time to time at the office. Then there is Tonto, a handsome tuxedo who was a bottle kitten from the barn and will also visit the clinic from time to time. Also, there is Woodrow, her corgi, and Keaton, her calico that went through veterinary school with her as well, Uno, her one eyed house cat, Chewy, a beautiful fluffy Siamese rescue and Zesta her crazy white lab.

Dr. Casey also has 10 horses, 25 commercial breeding ewes, and several chickens, geese, and ducks. She also helps with the family cow/calf operation.

Carol Balvanz

Carol Balvanz

Part time Receptionist and Accounts Payable Clerk

Carol graduated from Iowa State University with a degree in English and Speech communications in 1973. Read More...

She taught and coached for 14 years, and then was hired as communications director for the Iowa Cattlemen’s Association in 1987. In 2005 she became the Public Policy Director for the Iowa Soybean Association. She retired from employment in 2018 and now helps out at South Hardin Veterinary Clinic.

Her favorite part of veterinary medicine is being able to help her family members. She and her husband have always raised cattle, horses and various pets, so she been involved in animal health and production. This job has given her the opportunity to learn more about the technical side of animal care and treatment.

In her spare time, Carol enjoys spending time with her grandsons on the farm, and attending their sporting events. She loves tending her flower beds and yard in the summer, and working with the livestock year round, as well as sewing, knitting and quilting.

She has three house cats: Ernie, Skippy and Lolo. Ernie is the rescue cat with an attitude. Skippy is a pretty blue-eyed Himalayan, and Lolo is a long-haired dark tiger. Tonto, a tuxedo kitten Casey bottle fed two springs ago also lives with them and torments the resident cats. They have two border collies, Hank and Dale, who help with the livestock, and they frequently take care of Casey’s dogs, Woody (corgi) and Zesta (white lab.) Their menagerie also includes 80 crossbred cows, 3-4 horses and many outside cats. 

Lacey Hornung

Lacey Hornung

Veterinary Technician

Lacey graduated in 2016 from Tarleton State University in Stephenville, Texas with my Bachelor of Science in Animal Science with an emphasis in Animal Production. Read More...

Her favorite part of veterinary medicine, is making a difference in the lives of pets and their owners. She loves seeing the love and happiness on all of their faces!

In her spare time, Lacey enjoys spending time with her husband, showing calves, and snuggling with her four cats – Meeko, Bagheera, Uno, and Lila. As a happy, “crazy cat lady”, she loves cat personalities.

Meeko is a black and white longhair with one blue eye and one green eye. He was her first fur baby and was with her throughout college. He was the gateway cat to becoming a crazy cat lady thanks to Dr. Balvanz. Bagheera is a solid black shorthair that was a bottle baby…job hazard of being a technician; you always bring home the bottle babies. Uno is a solid gray shorthair with you guessed it…only 1 eye. He was ultimately a foster fail because Lacey fell in love with his wonderfully weird personality.  Lila is a gray and white shorthair and was her last rescue baby. She was a foster fail as well because Uno just loved her so much. The two of them are always together so there was no way she could separate them. She is her most obnoxious child and will always let you know when she is hungry, which is pretty much 24/7. 


Sandy Nelson

Sandy Nelson

Part Time Receptionist

Sandy has been working at South Hardin since 1988. She grew up on a farm near Stratford, lowa. Read More...

She graduated from Stratford Community School and attended lowa Central Community College until she married her husband and started a family. Her favorite part of veterinary medicine is working with animals and the people who love them. 

In her spare time she enjoys spending time with her grandchildren and doing crafts. Her pets Bitsy, a 9 year old faux Siamese cat, and Kato, an 8 year old Shetland Sheepdog.


Why Choose Us?

Our veterinary team has been caring for the pets of Union for many years. We understand how much your pets mean to you, and treat them as if they were our very own.

South Hardin Veterinary Clinic has been supporting Hardin County 4-H and helping to share the vision of hard work and responsibility to the animals in our lives.

Pet-Safe-Holiday-SeasonKeeping Your Pet Safe This Holiday Season


Celebrating the holidays with your pet is a wonderful gift. However, these celebrations can pose some potential risks to your pet’s health. Here are a few things you should keep in mind to help keep your pet safe this holiday season.

Dangerous Decorations

While holiday decorations are certainly beautiful, some decorations can be troublesome for your pet. One of the most common issues is pets consuming objects or materials that they shouldn’t. From sparkly tinsel to shiny ornaments, your pet may try to chew or swallow your holiday decorations. Not only can this cause digestive issues, but it can also be a choking hazard. Monitor your pet closely and try to keep decorations out of reach if possible.

If you are putting up a Christmas tree, there are some additional hazards you should be aware of. Cats frequently see Christmas trees as an exciting new object to climb. While you should discourage your pet from climbing the tree, it is always a good idea to make sure the tree is adequately secured just in case. This way, the tree won’t come toppling down in the event of a rogue tree climbing adventure.

If you are celebrating with a live tree, make sure you keep your pet from drinking the water out of the tree base. Tree water can contain fertilizer and bacteria that can be harmful to your pet. Also, be aware that other holiday plants like mistletoe and holly are dangerous and should be avoided.

Toxic Treats

As you celebrate the holidays, there will likely be plenty of tasty treats around your home. Unfortunately, many of these treats can be toxic to your pet. Some of the most common toxic foods include chocolate, raisins, grapes, onions, and garlic. Additionally, many sugar-free candies and baked goods contain an ingredient known as xylitol. Even small amounts of xylitol can be hazardous.

Try to keep tasty treats out of your pet’s reach and never leave food unattended. Remind your guests of your food rules and provide pet-friendly treats instead. If you are unsure if your pet has eaten something toxic, it is always best to give us a call or contact the Pet Poison Helpline.

Holiday Party Problems

Before you have your family and friends over for a holiday gathering, you should consider the impact a holiday party can have on your pet. Many pets experience anxiety with large groups of people in their homes. Creating a safe space where your pet can retreat from strangers can help reduce some of their stress. This space can be a quiet bedroom or another closed-off area of the house.

Creating a safe space can also help protect your pet from other dangers. With many people coming and going, doors are sometimes left open, and there may be more opportunities for your pet to escape. Try to keep your pet away from the door when people are coming and going. Also, ensure all doors are properly closed before letting your pet loose in the house.


We hope you enjoy this wonderful time of year with the ones you love. Keeping your furry friends safe will ensure a joyous time is had by all!


Keep your pets and herd Healthy
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Our Hours:

Sunday: Closed

Monday: 8am-5pm

Tuesday: 8am-5pm

Wednesday: 8am-5pm

Thursday: 8am-5pm

Friday: 8am-5pm

Saturday: 8am-12pm


Book an appointment by calling:

(641) 486-5485