Lisa Randecker

Lisa Randecker

Executive Assistant


Lisa Sagstetter

Community Relations Coordinator


Cyndi Plunkett

Financial Assistant/Bookkeeper


Krystal Boggs



Showri Nandagiri, P.E.

Showri Nandagiri, who is serving as Engineering Coordinator for the North Harris County Regional Water Authority, recently retired from the City of Houston, Department of Public Works and Engineering, as City Engineer. Showri worked for the City for more than 25 years and is highly regarded and widely recognized as one of the premier engineering professionals in the potable water field. Showri, a resident of Sugar Land, has his Bachelor’s degree in Civil Engineering from India and has a Master’s degree in Water Resources from the University of Connecticut. After working briefly for Turner, Collie and Braden Inc. in Houston, he joined the City as a graduate engineer in 1978. He held several positions, including Senior Assistant Director for Water Engineering and Construction Division, and Deputy Director for Engineering, Construction and Real Estate Division. He was responsible for managing the Surface Water Transmission Program for the City of Houston for over two decades.


Mark Evans

Mark Evans is a 6th generation Texan. He earned his Bachelor of Business Administration degree at Sam Houston State University, and began his government service with a 9-year tenure as a Field Appraiser with the Texas General Land Office. Elected as Trinity County Judge in 1995, Judge Evans served four terms in office and retired as County Judge in 2010.

Judge Evans was appointed as a member of the Region H Water Planning Group at its creation in 1997. He was elected Vice Chairman of the group and served in that capacity until 2009 when he became Chairman. During his more than 15 years on the Planning Group, Evans has gained extensive water planning experience.

While serving as County Judge, Evans held a variety of leadership positions in numerous professional and governmental associations, highlighted by his service as President of the County Judges and Commissioners Association of Texas, and as Chairman of the Forest Counties Payments Committee, an influential Congressional Advisory Committee. Judge Evans was appointed to the Committee by Dennis Hastert, Speaker of the U.S. House of Representatives. Through his interaction with state and federal agencies and the legislative process, Evans earned a reputation for consensus building leadership.

As the Authority’s Planning and Governmental Affairs Director, Mark assists the General Manager in interfacing with the City of Houston, the Harris-Galveston Subsidence District, other regional water authorities, Municipal Utility Districts within the Authority and state agencies such as the Texas Water Development Board and the Texas Commission on Environmental Quality. While working on the Authority’s short and long range planning, Mark coordinates with regional planning agencies such as the Houston Planning Commission, the Houston Galveston Area Council and Region H. He is also involved in further developing the Authority’s water conservation, water reuse and drought contingency plans and assisting in updating, revising, and amending the Authority’s Groundwater Reduction Plan.

jun chang

Jun Chang

Jun Chang, P.E., D.WRE, formerly the Deputy Director of Public Works & Engineering Department for the City of Houston, has joined the North Harris County Regional Water Authority as Deputy General Manager. The Authority’s General Manager Jimmie Schindewolf, P. E. said in making the announcement, “We are incredibly fortunate that such a highly respected and experienced engineer will be an integral part of our team that oversees the critical negotiations, planning, design and construction of the water infrastructure necessary to take us into the future.”

“As the fourth largest city in the U.S.,” Schindewolf continued, “Houston’s public water system is one of the largest in the country. Jun Chang was responsible for the operation and maintenance of the City of Houston’s regional water and wastewater utility systems. He spent 27 years with the City and most recently managed a staff of 1,580 people and had oversight of an annual capital, operations and maintenance budget of over $657 million.”

Jun has B.S. (1985) and M.S. (1987) degrees in Civil Engineering from the University of Houston, and is a Registered Professional Engineer in the State of Texas and a Diplomat of American Academy of Water Resources Engineers. He serves on the Board of Directors of the Texas Water Conservation Association.