Board Members

BOARD OFFICERS TELEPHONE DIRECTORS TELEPHONE
Gina Mangold, President 830-709-3879 Timothy L. Hildenbrand 830-709-3879 
Caroline A. Nentwich, Vice President 830-709-3879 Hector De La Fuente 830-709-3879
Richard A. Sultenfuss, 2nd Vice President 830-709-3879 Roy Tschirhart, Jr. 830-709-3879
JoNell M. Tarvin, Secretary/Treasurer 830-709-3879

 

GINA MANGOLD, President
Present Term August 2020-August 2023

Ms. Mangold has been on the Board of Directors since August 2018 and was elected as Board President in August 2020.

Ms. Mangold has a BS in Biomedical Science from Texas A&M and an MBA in Business/Finance from Our Lady of the Lake University.  She is the Executive Vice President & Chief Operating Office for NEXT Oncology with over 25 years of experience in the field of oncology drug-development for treatment in patients with cancer.  Ms. Mangold formerly served 11 years as a co-founder of South Texas Accelerated Research Therapeutic, LLC (START) and as the company's Chief Operating Officer and the CEO for START Shanghai.  She previously served as Director of Research Administration and Manager of Preclinical Operations for the Cancer Therapy and Research Center (CTRC) in San Antonio.

Ms. Mangold grew up in the rural Natalia area and currently lives in the Castroville area with her husband. 

Ms. Mangold currently serves on the Wage & Benefits Committee.

CAROLINE A. NENTWICH, Vice President
Present Term August 2018-August 2021

Ms. Nentwich has been a member of the Board of Directors since October of 2004.  She has been the 1st Vice President since 2007. 

Ms. Netwich has a BA in Accounting with a concentration in Business Data Systems and an MBA with a concentration in Information Systems.  Caroline brings to the board 40 plus years of business administrative knowledge and skills in both Information Systems and the Financial Industry.  She has attended numerous conferences on water related issues and public funds investments.  

Ms. Netwich lives in the rural area of Medina County.

Ms. Nentwich serves as the Chair of the Identity Theft Prevention Committee and as a member of the Finance Committee.

RICHARD A. SULTENFUSS, 2nd Vice President
Present Term August 2019-August 2022                                                               
   

Mr. Sultenfuss has been a member of the Board of Directors since March 1993. He has been the 2nd Vice President since May 2018.

Mr. Sultenfuss has an Associate's Degree in Applied Science-Refrigeration, a Master Air Conditioning and Heating License, Water Analysis Training, a Factory Chiller and Pumps certification, and was a licensed H/VAC Contractor. He retired as the Assistant Manager of Mueller and Wilson Inc. in San Antonio.  Richard brings to the Board valuable knowledge of general operations of wells, pumps, and motors and is boiler certified.  

Mr. Sultenfuss and his family reside in the Devine area.

Mr. Sultenfuss currently serves as the Chair of the Operations Committee.

JONELL M. TARVIN, Secretary/Treasurer
Present Term August 2020- August 2023

Ms. Tarvin has been on the Board of Directors since August 1999.   She is currently the Secretary/Treasurer. 

Ms. Tarvin retired from Southwestern Bell Telephone Company as an Area Manager with 29 years of experinence.  She bring to the Board a reliable expertise in management and finance.  She has completed training in Public Funds Investment in compliance with the Public Funds Investment Act and serves as the District Investment Officer.  She has attended a number of conferences and seminars on water issues.

Ms. Tarvin and her family live in the Dunlay/Castroville area. 

Ms. Tarvin currently serves as Chair of the Finance Committee and as a member of the Management Advisory Committee.

TIMOTHY L. HILDENBRAND, Director
Present Term August 2019-August 2022

Mr. Hildenbrand has been a member of the Board of Directors since April 1999.  He was Board President from May 2006 to August 2020.

Mr. Hildenbrand is a Certified Petroleum Geologist with a BS in Geological Engineering.  He also attended intensive spanish course through Proyecto Linguistiso Francisco Maroquin in Antigua, Guatemala, Central America.  Mr. Hildenbrand retired as President of Zachery Exploration and is involved in various aspects of the oil and gas industry.  Tim has attended multiple conferences on water and brings to the Board a vast and wide range of expertise in water related issues. 

Tim and his family live in the rural area of Medina County.  

Mr. Hildenbrand currently serves as the Chair of the Management Advisory Committee.

HECTOR DE LA FUENTE, Director
Present Term August 2020-August 2023

Mr. De La Fuente has been on the Board of Directors since May 2010.   

Mr. De La Fuente evaluates oil used in agriculture and construction off-road equipment drivelines. He works with original manufactures providing technical support and developing new technologies. He currently works for Chevon Oronite Company and had previously worked for Southwest Research for 20+ years.

Mr. De La Fuente and his family live in the Pearson area.

Mr. De La Fuente currently serves as Chair of the Wage and Benefits Committee and as a member of the Identity Theft Prevention Committee.

ROY J.  TSCHIRHART, JR., Director
Present Term  August 2018- August 2021

Mr. Tschirhart has been on the Board of Directors since August 2012. 

Mr. Tschirhart is currently retired with many years of experience in the plumbing supply field.  Mr. Tschirhart's father was one of the original members of East Medina County Water Supply Corporation.

Mr. Tschirhart and family live in the Devine area.

Mr. Tschirhart currently serves on the Operations Committee.