Cynthia Lister

Dan has a wealth of knowledge about the water/wastewater field and quickly responds to any customer training needs. He is very reliable and flexible in meeting varying schedules. I can always count on him to deliver what I need when I need it.

Cynthia Lister

Director of Corporate and Community Education, emeritus, Tyger River Campus at Spartanburg Community College

Training Wastewater

Chad Easley, NREMT-P

Daniel L. Theobald or Wastewater Dan was coming into our operation when we’re not complying with our zinc level. We were out of compliance for several years and despite our best efforts, we could not get into compliance. Dan has given several suggestions and we have put them into place. As a result, we have been over 6 months free of exceedances. We also have been able to eliminate two waste water, chemicals we were using. We also lowered our chemical usage. We have seen a huge cost saving and operational savings.

I can say if you have problems, call Dan. He will get you fixed in a hurry.

Chad Easley, NREMT-P

Regional EHS Director with 20+ years of success in health and safety management

Cost Reduction

Scott Fillmore

Dan worked with the GE Water team at a waste treatment facility to assist in optimizing performance and reducing the customers’ costs. Dan understands the waste treatment business and can be a great resource for companies that need assistance in optimizing the performance of their waste treatment facility.

Scott Fillmore

Regional Sales Director at Solenis

Cost Reduction

Ben Guest

Mr. Theobald has been conducting our annual HazWoper/DOT training for several years. His course is always very professional and informative. We are very satisfied with his services.

Ben Guest

T & S Brass

Training WasteWater & more

Steve Pruitt

I met Dan through the courses he was teaching at Spartanburg Community College on Wastewater Treatment. After meeting him, I brought him in to manage our wastewater treatment process. Dan brings years of experience and knowledge with him. His passion, dedication and desire to perform well are rare. I would strongly recommend Dan and would welcome the opportunity to work with him again.

Steve Pruitt

Site Manager at Flexon Industries

Training WasteWater & more

Donna Sightler

Dan is a pleasure to work with. Dan takes pride in a job well done. His expertise in the wastewater field has enabled him to make a significant difference in odor control measures for sludge waste landfill at our facility. He has worked with other customers to reduce their sludge waste from being landfilled. Dan is well aware of the required state DHEC regulations which all landfills are required to follow to ensure compliance.

Donna Sightler

Director at Greenwood County Public Works

Process Optimization

Mike Hannon

The Wastewater Courses taught by Dan Theobald are well received by our attendees. He is well prepared and knowledgeable in his field as reflected in our employees fulfilling the state requirements for Wastewater Treatment Operators. I highly recommend any of his programs and services.

Mike Hannon

Director of Builders Hardware at Bommer Industries

Training Wastewater

Tim Fulford

Dan is a great instructor and brings a wealth of experience to the classroom. In addition, he ensures the students leave the classroom with the knowledge, skills and abilities improve their on the job performance.

Tim Fulford

Department Head, Engineering Technology at Trident Technical College

Training Wastewater

Rob Pollard

Dan Theobald managed the waste water operations at NURRC. Dan did a great job of continually improving the operations so as to bring the plant into 100% permit compliance. He was great at training operators. Dan does whatever it takes to get the job done.

Rob Pollard

Process Engineer at O’Neal, Inc.

Process Optimization, Training WasteWater & more

Lori Ditoro

We have enjoyed a wonderful relationship with Dan Theobald (AKA Wastewater Dan), who is a featured columnist for Processing magazine. He has written for our publication for more than three years and is a valuable contributor. The Process Flow Network and Processing teams are proud of our history with Dan and look forward to working together for many years.

Lori Ditoro

Content Marketing Strategist, Fluke Digital Systems at Fluke Corporation

Article Publication

Virginia (Michelle Lowrey) Rodriguez

Daniel L. Theobald of Environmental Services has been doing business with our company for about 7 years and he’s a pleasure to work with. I have found Daniel to be a true professional and is extremely knowledgeable in the environmental field. I would highly recommend Daniel to any company that may be in need of professional advice or support for their wastewater or other environmental needs.

Virginia (Michelle Lowrey) Rodriguez

Publisher-Heartland Industrial Group

Process Optimization

Marci Eddy

Dan was our operator of record for almost a year. We utilized his services after our current operator of record retired until we got one of our own personnel qualified. Dan was professional and friendly throughout all of his communications with us and our regulators. He developed relationships with the operators on all three shifts and provided daily feedback on our process status. He also provided monthly reports on discharge data and helped resolve any laboratory result discrepancies. Dan had good insight on process improvements and was a pleasure to work with.

Marci Eddy

Principal Process Engineer at Westinghouse Electric Company

Process Optimization

John Harrelson

In working with Dan on projects with companies such as Kelmar Industries and Greenwood Packing, his knowledge of wastewater systems has given me the opportunity to identify ways to improve efficiency and lower overall cost while I supply chemicals to these customers. Not only has Dan and I optimized chemical usage for these customers, but the performance of their wastewater processes has greatly improved which made them more competitive in the marketplace.

John Harrelson

Regional Sales Manager at Kroff, Inc.

Cost Reduction

Mr. Davis

Mr. Theobald supplied me with the materials, guidance and answers to any questions I had concerning my preparation for the CPO exam, after which I took & passed in North Charleston, SC. He is extraordinarily qualified, exceedingly knowledgeable and also very professional in this field. Thanks to Mr. Theobald I have advanced in my job after receiving my South Carolina public pool operator certification (CPO). Thanks again to Daniel L. Theobald.

Mr. Davis

Upstate-SC

Training WasteWater & more

Lee R. Luff, CCE, CAE

Dan is well organized and has an eye for details. He recently developed and managed an environmental conference for the Upstate Region and through his leadership the conference was a total success. Dan is results driven and has exceeded our expectations as a community leader.

Lee R. Luff, CCE, CAE

President emeritus-Anderson Area Chamber of Commerce

Process Optimization

Judy Bruenjes

I have worked with Dan for over a year as a trainer. He is very enthusiastic, courteous, and completely reliable. He is diligent and meticulous in his work and professional standards. Dan is an experienced wastewater operator with many skills to offer. He tries hard to meet the needs of his clients, and stands by his work.

Judy Bruenjes

Environmental Engineer

Training WasteWater & more

Jimmy Andrews

Dan has been working with us for the past several years at our wastewater treatment facility. He has been instrumental in developing our daily monitoring procedures, corrective action plans, and in training our staff to meet or beat all standards and reduce unexpected costs. His experience and knowledge is a great resource for the facility operation. His team work and high quality standards is definitely a plus to our operation.

Jimmy Andrews

Plant Engineer-Sonoco

Cost Reduction

Harold Atkins

I found Dan to be a true professional manager with honesty and integrity. He has a wealth of knowledge in the environmental field and knows every detail involved in the operations of the NURRC Physical Chemical Treatment Plant. He knows how to get the job done efficiently and right and he knows what is required to meet and exceed requirements of DHEC and EPA. He is a pleasure to work with.

Harold Atkins

Water Treatment Superintendent 31 years, emeritus, - current part time water plant operator - Independent Environmental Services Professional

Process Optimization

Bill Barnette, III, RIP

Dan has identified opportunities in managing our wastewater treatment plant and has made many improvements including reducing costs. He continues to keep our plant in compliance, while at the same time, testing new innovations for continued improvement and cost reduction.

Bill Barnette, III, RIP

Vice President Operations-Greenwood Packing

Cost Reduction

Robert Stevens, P.E., BCEE

Dan Theobald has impressed me with his competence and commitment to meeting client needs. He knows what needs to be done and will not quit until it is done. He is good communicating with managers and operators and even engineers! He works hard to save clients money and can demonstrate these savings. I enjoy working with Dan and recommend him to my clients.

Robert Stevens, P.E., BCEE

The Stevens Group, LLC

Cost Reduction, Process Optimization

Jason Howell

Dan and I worked closely together on designing and implementing an anti-foam feed system to greatly improve process results while reducing the customers overall cost of ownership. Dan is very detailed and results oriented and does an excellent job of managing and driving new process improvements and initiatives.

Jason Howell

Water Treatment: Physical, Chemical, Biological, Boiler, Cooling, RO, UF, Sales, Design, Service

Cost Reduction

Kevin Westerling

Dan has been an extremely valued asset to me and my work as chief editor of Water Online. He leverages his considerable consulting and training expertise to create content with true impact. His “Math Solutions” series — tutorial articles supported by video demonstrations — is consistently well-executed and high-performing. He is helpful, knowledgeable, and a pleasure to work with.

Kevin Westerling

Chief Editor, Water Online

Article Publication

Michael Cox

Daniel has been an integral part of our Wastewater management program for several years, beginning before I was employed at Carolina Pride. In my time working with Daniel, I have found him to be a knowledgeable, thorough, professional who serves a vital function of our organization. And, when we had a critical employee leave the company, Daniel was able to assume part of those duties so we could continue to operate safely within the regulations. He suggested and we installed and are utilizing specific pieces of testing equipment for better monitoring and therefore more efficient usage of the necessary wastewater chemicals. And while he is most knowledgeable in wastewater management, he has experience in other environmental matters and we have utilized him as part of our overall environmental program.

I would highly recommend Daniel’s work to whomever is in need of professional advice or support for their wastewater or other environmental needs.

Michael Cox

General Manager at JBS, USA

Process Optimization

Shan S

Daniel has an exceptional knowledge of wastewater operations and management. His consulting experience and training, knowledge is truly remarkable in his varied contributions and comprehensive lucid analyses on optimization. He is an outstanding WastewaterWizard and has been a valued contributor to Water Today – The Magazine. An excellent teacher, the wealth of his experience and knowledge that he brings to any engagement cannot be overstated. His Back to Fundamentals educational series in our magazine has been a technical guidance for the water & wastewater professionals. He is a kind and humble person. It is my great pleasure to have him as our esteemed columnist. Daniel would be an outstanding addition to any project team.

Shan S

Uniting the Vibrant World of Water

Article Publication