Megh R. Goyal, PhD, PE, is a Retired Professor in Agricultural and Biomedical Engineering from the General Engineering Department in the College of Engineering at the University of Puerto Rico–Mayaguez Campus. He earlier worked as a Soil Conservation Inspector and as a Research Assistant at Haryana Agricultural University and Ohio State University. He was the first agricultural engineer to receive the professional license in Agricultural Engineering from the College of Engineers and Surveyors of Puerto Rico and was proclaimed as the “Father of Irrigation Engineering in Puerto Rico for the twentieth century” by the ASABE, Puerto Rico Section, for his pioneering work on micro irrigation, evapotranspiration, agroclimatology, and soil and water engineering. During his professional career of over 52 years, he has received many prestigious awards. A prolific author and editor, he has written more than 200 journal articles and several textbooks and has edited over 100 books.Gaurav Saini, PhD, is an Associate Professor in the Department of Civil Engineering at Netaji Subhas University of Technology, Delhi, India. His current areas of research include sustainability, natural materials, pollution control, pollution and human health, and, broadly, environmental engineering. He has guided 48 theses at the master’s level and five at the doctoral level (one awarded), in addition to numerous BTech-level projects. His research work has resulted in several research papers in journals of repute, conference presentations at the international level, and 20 patent filings (seven awarded). He serves as a resource person for various governmental bodies and universities for academic, research, and consultancy-related endeavours. He also serves as an ad-hoc reviewer for more than 25 international journals. He has edited one book and guest-edited a special issue of a Springer journal. He is an alumnus of the Oregon State University, United States, where he earned his MS and PhD degrees in Environmental Engineering. He also completed a postdoctoral at the University of Delaware, USA.

• PART I: INTRODUCTION AND REVIEW 1. Treated Wastewater for Agricultural Usage: A Review 2. Use of Wastewater in Agriculture 3. Nanomaterials for Wastewater Treatment 4. Low-Cost Wastewater Treatment Technologies Suitable for Irrigation 5. Agrifusion of Water and Wastewater Technologies: Status, Management, and Challenges PART II: UPTAKE BY PLANTS: HEAVY METALS AND EMERGING CONTAMINANTS 6. Uptake of Heavy Metals by Plants Irrigated with Treated Wastewater: A Review 7. Uptake of Emerging Contaminants and Pathogens by Plants: Use and Impact of Wastewater PART III: METHODS AND APPLICATIONS 8. Evaluation of Groundwater Vulnerability to Contamination through Water Quality Index 9. Application of Sludge from a Sequencing Batch Reactor - Sewage Treatment Plant: A Case Study 10. Scope of Rainwater Harvesting for Food Security and Flood Mitigation: A Review 11. Design and Construction of a Modified Lifting Device for Water and Wastewater in Nigeria PART IV: RECYCLED WATER USE VERSUS IRRIGATION 12. Internet of Agribot Things (IoAT) for Irrigation and Wastewater Systems 13. Status and Remedial Measures of Recycled Water in Nigeria

Megh R. Goyal, PhD, PE, is a Retired Professor in Agricultural and Biomedical Engineering from the General Engineering Department in the College of Engineering at the University of Puerto Rico–Mayaguez Campus. He earlier worked as a Soil Conservation Inspector and as a Research Assistant at Haryana Agricultural University and Ohio State University. He was the first agricultural engineer to receive the professional license in Agricultural Engineering from the College of Engineers and Surveyors of Puerto Rico and was proclaimed as the “Father of Irrigation Engineering in Puerto Rico for the twentieth century” by the ASABE, Puerto Rico Section, for his pioneering work on micro irrigation, evapotranspiration, agroclimatology, and soil and water engineering. During his professional career of over 52 years, he has received many prestigious awards. A prolific author and editor, he has written more than 200 journal articles and several textbooks and has edited over 100 books.Gaurav Saini, PhD, is an Associate Professor in the Department of Civil Engineering at Netaji Subhas University of Technology, Delhi, India. His current areas of research include sustainability, natural materials, pollution control, pollution and human health, and, broadly, environmental engineering. He has guided 48 theses at the master’s level and five at the doctoral level (one awarded), in addition to numerous BTech-level projects. His research work has resulted in several research papers in journals of repute, conference presentations at the international level, and 20 patent filings (seven awarded). He serves as a resource person for various governmental bodies and universities for academic, research, and consultancy-related endeavours. He also serves as an ad-hoc reviewer for more than 25 international journals. He has edited one book and guest-edited a special issue of a Springer journal. He is an alumnus of the Oregon State University, United States, where he earned his MS and PhD degrees in Environmental Engineering. He also completed a postdoctoral at the University of Delaware, USA.

• PART I: INTRODUCTION AND REVIEW 1. Treated Wastewater for Agricultural Usage: A Review 2. Use of Wastewater in Agriculture 3. Nanomaterials for Wastewater Treatment 4. Low-Cost Wastewater Treatment Technologies Suitable for Irrigation 5. Agrifusion of Water and Wastewater Technologies: Status, Management, and Challenges PART II: UPTAKE BY PLANTS: HEAVY METALS AND EMERGING CONTAMINANTS 6. Uptake of Heavy Metals by Plants Irrigated with Treated Wastewater: A Review 7. Uptake of Emerging Contaminants and Pathogens by Plants: Use and Impact of Wastewater PART III: METHODS AND APPLICATIONS 8. Evaluation of Groundwater Vulnerability to Contamination through Water Quality Index 9. Application of Sludge from a Sequencing Batch Reactor - Sewage Treatment Plant: A Case Study 10. Scope of Rainwater Harvesting for Food Security and Flood Mitigation: A Review 11. Design and Construction of a Modified Lifting Device for Water and Wastewater in Nigeria PART IV: RECYCLED WATER USE VERSUS IRRIGATION 12. Internet of Agribot Things (IoAT) for Irrigation and Wastewater Systems 13. Status and Remedial Measures of Recycled Water in Nigeria

Megh R. Goyal, PhD, PE, is a Retired Professor in Agricultural and Biomedical Engineering from the General Engineering Department in the College of Engineering at the University of Puerto Rico–Mayaguez Campus. He earlier worked as a Soil Conservation Inspector and as a Research Assistant at Haryana Agricultural University and Ohio State University. He was the first agricultural engineer to receive the professional license in Agricultural Engineering from the College of Engineers and Surveyors of Puerto Rico and was proclaimed as the “Father of Irrigation Engineering in Puerto Rico for the twentieth century” by the ASABE, Puerto Rico Section, for his pioneering work on micro irrigation, evapotranspiration, agroclimatology, and soil and water engineering. During his professional career of over 52 years, he has received many prestigious awards. A prolific author and editor, he has written more than 200 journal articles and several textbooks and has edited over 100 books.Gaurav Saini, PhD, is an Associate Professor in the Department of Civil Engineering at Netaji Subhas University of Technology, Delhi, India. His current areas of research include sustainability, natural materials, pollution control, pollution and human health, and, broadly, environmental engineering. He has guided 48 theses at the master’s level and five at the doctoral level (one awarded), in addition to numerous BTech-level projects. His research work has resulted in several research papers in journals of repute, conference presentations at the international level, and 20 patent filings (seven awarded). He serves as a resource person for various governmental bodies and universities for academic, research, and consultancy-related endeavours. He also serves as an ad-hoc reviewer for more than 25 international journals. He has edited one book and guest-edited a special issue of a Springer journal. He is an alumnus of the Oregon State University, United States, where he earned his MS and PhD degrees in Environmental Engineering. He also completed a postdoctoral at the University of Delaware, USA.

• PART I: INTRODUCTION AND REVIEW 1. Treated Wastewater for Agricultural Usage: A Review 2. Use of Wastewater in Agriculture 3. Nanomaterials for Wastewater Treatment 4. Low-Cost Wastewater Treatment Technologies Suitable for Irrigation 5. Agrifusion of Water and Wastewater Technologies: Status, Management, and Challenges PART II: UPTAKE BY PLANTS: HEAVY METALS AND EMERGING CONTAMINANTS 6. Uptake of Heavy Metals by Plants Irrigated with Treated Wastewater: A Review 7. Uptake of Emerging Contaminants and Pathogens by Plants: Use and Impact of Wastewater PART III: METHODS AND APPLICATIONS 8. Evaluation of Groundwater Vulnerability to Contamination through Water Quality Index 9. Application of Sludge from a Sequencing Batch Reactor - Sewage Treatment Plant: A Case Study 10. Scope of Rainwater Harvesting for Food Security and Flood Mitigation: A Review 11. Design and Construction of a Modified Lifting Device for Water and Wastewater in Nigeria PART IV: RECYCLED WATER USE VERSUS IRRIGATION 12. Internet of Agribot Things (IoAT) for Irrigation and Wastewater Systems 13. Status and Remedial Measures of Recycled Water in Nigeria