Franz Tscheikner-Gratl
About
Background
Franz Tscheikner-Gratl has a Master in Civil Engineering (2011) and a PhD in Technical Sciences (2016) from the University of Innsbruck. After his PhD he was part of the Quantifying Uncertainty in Integrated Catchment Studies (QUICS) FP7 Marie Curie Initial Training Network (ITN) at TU Delft. In 2019 he joined the Water and Wastewater Group at NTNU.
In 2013 he was awarded with the Eduard-Wallnöfer-Price of appreciation of the Tyrolean Industry and in 2016 with the Award of Excellence of the Austrian Federal Ministry of Science, Research and Economy. He is currently secretary of the working group for Urban drainage asset management (UDAM) of the Joint committee on Urban Drainage (JCUD), where he is also a part of the leadership team. Furthermore, he is an active reviewer for several scientific journals and a member of the editorial board of Urban Water Journal.
Research
Research interests
- Rehabilitation and adaptation management of urban (water) infrastructure
- Urban water management
- Sewer asset management
- Decision making processes in environmental engineering
- Hydrodynamic urban drainage modelling
- Uncertainties in modelling
- Deterioration processes of urban water infrastructure
- Interactions between multiple urban infrastructures
B-WaterSmart
StopUP
SESSILE
Publications
2024
-
Tscheikner-Gratl, Franz;
Clemens, Francois Henri Leon;
Cherqui, Frédéric;
van Duin, Bert.
(2024)
Asset Management of Urban Drainage Systems:
If anything exciting happens, we've done it wrong!.
IWA Publishing
IWA Publishing
Non-fiction book
-
Mohan Doss, Prasanna;
Roghani, Bardia;
Bosco, Camillo;
Abdalla, Elhadi Mohsen Hassan;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Sewer Network and Smart Water Meter Data for Modelling and Analysis of Water Distribution and Sewer Networks.
Database
-
Chen, Siling;
Brokhausen, Florian;
Wiesner, Philipp;
Hegyi, Dóra;
Citir, Muzaffer;
Huth, Margaux.
(2024)
Coupled simulation of urban water networks and interconnected critical urban infrastructure systems: A systematic review and multi-sector research agenda.
Sustainable Cities and Society (SCS)
Academic literature review
-
Daulat, Shamsuddin;
Rokstad, Marius Møller;
Bruaset, Stian;
Langeveld, Jeroen;
Tscheikner-Gratl, Franz.
(2024)
Evaluating the generalizability and transferability of water distribution deterioration models.
Reliability Engineering & System Safety
Academic article
-
Salehi, Sattar;
Fontanta, Marcele Elisa;
Tscheikner-Gratl, Franz;
Herrera, Manuel;
Sadiq, Rehan;
Mian, Haroon R..
(2024)
A fuzzy group decision-making model for Water Distribution Network rehabilitation.
Urban Water Journal
Academic article
-
Mohan Doss, Prasanna;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
The performance of encoder–decoder neural networks for leak detection in water distribution networks.
Water Supply
Academic article
-
Pritsis, Spyridon;
Pons, Vincent Jean-Michel Thierry;
Rokstad, Marius Møller;
Clemens-Meyer, François H.L.R.;
Kleidorfer, Manfred;
Tscheikner-Gratl, Franz.
(2024)
The role of hyetograph shape and designer subjectivity in the design of an urban drainage system.
Water Science and Technology
Academic article
-
Kerimov, Bulat;
Taormina, Riccardo;
Tscheikner-Gratl, Franz.
(2024)
Towards transferable metamodels for water distribution systems with edge-based graph neural networks.
Water Research
Academic article
-
Bahrami, Mahdi;
Roghani, Bardia;
Tscheikner-Gratl, Franz;
Rokstad, Marius Møller.
(2024)
A deep dive into green infrastructure failures using fault tree analysis.
Water Research
Academic article
-
Daulat, Shamsuddin;
Roghani, Bardia;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Hotspot analysis for integrated multi-infrastructure asset management.
Water Science and Technology
Academic article
-
Roghani, Bardia;
Bahrami, Mahdi;
Tscheikner-Gratl, Franz;
Cherqui, Frédéric;
Muthanna, Tone Merete;
Rokstad, Marius Møller.
(2024)
A comparative analysis of international guidelines for green infrastructure performance assessment.
Blue-Green Systems
Academic article
-
Mohan Doss, Prasanna;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Leak Localization Using Autoencoders and Shapley Values.
Engineering Proceedings
Academic article
-
Pons, Vincent;
Strømberg, Merethe Arntsen;
Blecken, Godecke-Tobias;
Tscheikner-Gratl, Franz;
Viklander, Maria;
Muthanna, Tone Merete.
(2024)
Embracing epistemic uncertainty: a risk evaluation method for pollutants in stormwater.
Water Science and Technology
Academic article
-
Daulat, Shamsuddin;
Roghani, Bardia;
Langeveld, Jeroen G.;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Metrics to quantify the degree of co-location of urban water infrastructure.
Water Science and Technology
Academic article
-
Vargas Alvarez, Kevin Alberto;
Waak, Michael;
Tscheikner-Gratl, Franz;
Rokstad, Marius Møller.
(2024)
Tool to Model the Potential Risk of Legionella Growth in Premise Plumbing Systems.
Engineering Proceedings
Academic article
2023
-
Pons, Vincent Jean-Michel Thierry;
Abdalla, Elhadi Mohsen Hassan;
Tscheikner-Gratl, Franz;
Alfredsen, Knut Tore;
Sivertsen, Edvard;
Bertrand-Krajewski, Jean-Luc.
(2023)
Practice makes the model: A critical review of stormwater green infrastructure modelling practice.
Water Research
Academic article
-
Mohan Doss, Prasanna;
Rokstad, Marius Møller;
Steffelbauer, David;
Tscheikner-Gratl, Franz.
(2023)
Uncertainties in different leak localization methods for water distribution networks: a review.
Urban Water Journal
Academic literature review
-
Kerimov, Bulat;
Bentivoglio, Roberto;
Garzón, Alexander;
Isufi, Elvin;
Tscheikner-Gratl, Franz;
Steffelbauer, David.
(2023)
Assessing the performances and transferability of graph neural network metamodels for water distribution systems.
Journal of Hydroinformatics
Academic article
2022
-
Meier, Robert;
Tscheikner-Gratl, Franz;
Steffelbauer, David;
Makropoulos, Christos.
(2022)
Flow Measurements Derived from Camera Footage Using an Open-Source Ecosystem.
Water
Academic article
-
Langeveld, Jeroen G.;
Cherqui, Frédéric;
Tscheikner-Gratl, Franz;
Muthanna, Tone Merete;
Fernandez-Delgado Juarez, Marina ;
Leitao, Joao.
(2022)
Asset management for blue-green infrastructures: a scoping review.
Blue-Green Systems
Academic article
-
Daulat, Shamsuddin;
Rokstad, Marius Møller;
Klein-Paste, Alex;
Langeveld, Jeroen G.;
Tscheikner-Gratl, Franz.
(2022)
Challenges of integrated multi-infrastructure asset management: a review of pavement, sewer, and water distribution networks.
Structure and Infrastructure Engineering
Academic article
2021
-
Fugledalen, Thomas;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2021)
On the influence of input data uncertainty on sewer deterioration models–a case study in Norway.
Structure and Infrastructure Engineering
Academic article
2020
-
Tscheikner-Gratl, Franz;
Caradot, Nicolas;
Cherqui, Frédéric;
Leitão, João P.;
Ahmadi, Mehdi;
Langeveld, Jeroen.
(2020)
Sewer asset management – state of the art and research needs.
Urban Water Journal
Academic literature review
-
Ambauen, Noemi;
Muff, Jens;
Tscheikner-Gratl, Franz;
Trinh, Thuat;
Halle, Cynthia;
Meyn, Thomas.
(2020)
Application of electrochemical oxidation in cold climate regions – Effect of temperature, pH and anode material on the degradation of Bisphenol A and the formation of disinfection by-products.
Journal of Environmental Chemical Engineering
Academic article
2019
-
Tscheikner-Gratl, Franz;
Bellos, Vasilis;
Schellart, Alma;
Moreno-Rodenas, Antonio;
Muthusamy, Manoranjan;
Langeveld, Jeroen.
(2019)
Recent insights on uncertainties present in integrated catchment water quality modelling.
Water Research
Academic literature review
-
Vonach, Tanja;
Kleidorfer, Manfred;
Rauch, Wolfgang;
Tscheikner-Gratl, Franz.
(2019)
An Insight to the Cornucopia of Possibilities in Calibration Data Collection.
Water resources management
Academic article
-
Moreno-Rodenas, Antonio;
Tscheikner-Gratl, Franz;
Langeveld, Jeroen;
Clemens, Francois.
(2019)
Uncertainty analysis in a large-scale water quality integrated catchment modelling study.
Water Research
Academic article
2018
-
Kleidorfer, Manfred;
Tscheikner-Gratl, Franz;
Vonach, Tanja;
Rauch, Wolfgang.
(2018)
What can we learn from a 500-year event? – Experiences from urban drainage in Austria.
Water Science and Technology
Academic article
-
Leimgruber, Johannes;
Steffelbauer, David;
Krebs, Gerald;
Tscheikner-Gratl, Franz;
Muschalla, Dirk.
(2018)
Selecting a series of storm events for a model-based assessment of combined sewer overflows.
Urban Water Journal
Academic article
-
Vonach, Tanja;
Tscheikner-Gratl, Franz;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2018)
A Heuristic Method for Measurement Site Selection in Sewer Systems.
Water
Academic article
-
Winkler, Daniel;
Haltmeier, Markus;
Kleidorfer, Manfred;
Rauch, Wolfgang;
Tscheikner-Gratl, Franz.
(2018)
Pipe failure modelling for water distribution networks using boosted decision trees.
Structure and Infrastructure Engineering
Academic article
2017
-
Tscheikner-Gratl, Franz;
Egger, Patrick;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2017)
Comparison of Multi-Criteria Decision Support Methods for Integrated Rehabilitation Prioritization.
Water
Academic article
-
Mikovits, Christian;
Tscheikner-Gratl, Franz;
Jasper-Tönnies, Alrun;
Einfalt, Thomas;
Huttenlau, Matthias;
Schöpf, Martin.
(2017)
Decision Support for Adaptation Planning of Urban Drainage Systems.
Journal of water resources planning and management
Academic article
2016
-
Tscheikner-Gratl, Franz;
Sitzenfrei, Robert;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2016)
Integrated rehabilitation planning of urban infrastructure systems using a street section priority model.
Urban Water Journal
Academic article
-
Tscheikner-Gratl, Franz;
Sitzenfrei, Robert;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2016)
Enhancement of limited water supply network data for deterioration modelling and determination of rehabilitation rate.
Structure and Infrastructure Engineering
Academic article
-
Tscheikner-Gratl, Franz;
Zeisl, Peter;
Kinzel, Carolina;
Leimgruber, Johannes;
Ertl, Thomas;
Rauch, Wolfgang.
(2016)
Lost in calibration: why people still don’t calibrate their models, and why they still should – a case study from urban drainage modelling.
Water Science and Technology
Academic article
-
Tscheikner-Gratl, Franz.
(2016)
Integrated Approach for Multi-Utility Rehabilitation Planning of Urban Water Infrastructure – Focus on small and medium sized Municipalities.
Innsbruck University Press
Innsbruck University Press
Academic monograph
2014
-
Tscheikner-Gratl, Franz;
Mikovits, Christian;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2014)
Adaptation of sewer networks using integrated rehabilitation management.
Water Science and Technology
Academic article
2013
-
Kleidorfer, Manfred;
Möderl, Michael;
Tscheikner-Gratl, Franz;
Hammerer, Max;
Kinzel, Heiko;
Rauch, Wolfgang.
(2013)
Integrated planning of rehabilitation strategies for sewers.
Water Science and Technology
Academic article
Journal publications
-
Chen, Siling;
Brokhausen, Florian;
Wiesner, Philipp;
Hegyi, Dóra;
Citir, Muzaffer;
Huth, Margaux.
(2024)
Coupled simulation of urban water networks and interconnected critical urban infrastructure systems: A systematic review and multi-sector research agenda.
Sustainable Cities and Society (SCS)
Academic literature review
-
Daulat, Shamsuddin;
Rokstad, Marius Møller;
Bruaset, Stian;
Langeveld, Jeroen;
Tscheikner-Gratl, Franz.
(2024)
Evaluating the generalizability and transferability of water distribution deterioration models.
Reliability Engineering & System Safety
Academic article
-
Salehi, Sattar;
Fontanta, Marcele Elisa;
Tscheikner-Gratl, Franz;
Herrera, Manuel;
Sadiq, Rehan;
Mian, Haroon R..
(2024)
A fuzzy group decision-making model for Water Distribution Network rehabilitation.
Urban Water Journal
Academic article
-
Mohan Doss, Prasanna;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
The performance of encoder–decoder neural networks for leak detection in water distribution networks.
Water Supply
Academic article
-
Pritsis, Spyridon;
Pons, Vincent Jean-Michel Thierry;
Rokstad, Marius Møller;
Clemens-Meyer, François H.L.R.;
Kleidorfer, Manfred;
Tscheikner-Gratl, Franz.
(2024)
The role of hyetograph shape and designer subjectivity in the design of an urban drainage system.
Water Science and Technology
Academic article
-
Kerimov, Bulat;
Taormina, Riccardo;
Tscheikner-Gratl, Franz.
(2024)
Towards transferable metamodels for water distribution systems with edge-based graph neural networks.
Water Research
Academic article
-
Bahrami, Mahdi;
Roghani, Bardia;
Tscheikner-Gratl, Franz;
Rokstad, Marius Møller.
(2024)
A deep dive into green infrastructure failures using fault tree analysis.
Water Research
Academic article
-
Daulat, Shamsuddin;
Roghani, Bardia;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Hotspot analysis for integrated multi-infrastructure asset management.
Water Science and Technology
Academic article
-
Roghani, Bardia;
Bahrami, Mahdi;
Tscheikner-Gratl, Franz;
Cherqui, Frédéric;
Muthanna, Tone Merete;
Rokstad, Marius Møller.
(2024)
A comparative analysis of international guidelines for green infrastructure performance assessment.
Blue-Green Systems
Academic article
-
Mohan Doss, Prasanna;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Leak Localization Using Autoencoders and Shapley Values.
Engineering Proceedings
Academic article
-
Pons, Vincent;
Strømberg, Merethe Arntsen;
Blecken, Godecke-Tobias;
Tscheikner-Gratl, Franz;
Viklander, Maria;
Muthanna, Tone Merete.
(2024)
Embracing epistemic uncertainty: a risk evaluation method for pollutants in stormwater.
Water Science and Technology
Academic article
-
Daulat, Shamsuddin;
Roghani, Bardia;
Langeveld, Jeroen G.;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Metrics to quantify the degree of co-location of urban water infrastructure.
Water Science and Technology
Academic article
-
Vargas Alvarez, Kevin Alberto;
Waak, Michael;
Tscheikner-Gratl, Franz;
Rokstad, Marius Møller.
(2024)
Tool to Model the Potential Risk of Legionella Growth in Premise Plumbing Systems.
Engineering Proceedings
Academic article
-
Pons, Vincent Jean-Michel Thierry;
Abdalla, Elhadi Mohsen Hassan;
Tscheikner-Gratl, Franz;
Alfredsen, Knut Tore;
Sivertsen, Edvard;
Bertrand-Krajewski, Jean-Luc.
(2023)
Practice makes the model: A critical review of stormwater green infrastructure modelling practice.
Water Research
Academic article
-
Mohan Doss, Prasanna;
Rokstad, Marius Møller;
Steffelbauer, David;
Tscheikner-Gratl, Franz.
(2023)
Uncertainties in different leak localization methods for water distribution networks: a review.
Urban Water Journal
Academic literature review
-
Kerimov, Bulat;
Bentivoglio, Roberto;
Garzón, Alexander;
Isufi, Elvin;
Tscheikner-Gratl, Franz;
Steffelbauer, David.
(2023)
Assessing the performances and transferability of graph neural network metamodels for water distribution systems.
Journal of Hydroinformatics
Academic article
-
Meier, Robert;
Tscheikner-Gratl, Franz;
Steffelbauer, David;
Makropoulos, Christos.
(2022)
Flow Measurements Derived from Camera Footage Using an Open-Source Ecosystem.
Water
Academic article
-
Langeveld, Jeroen G.;
Cherqui, Frédéric;
Tscheikner-Gratl, Franz;
Muthanna, Tone Merete;
Fernandez-Delgado Juarez, Marina ;
Leitao, Joao.
(2022)
Asset management for blue-green infrastructures: a scoping review.
Blue-Green Systems
Academic article
-
Daulat, Shamsuddin;
Rokstad, Marius Møller;
Klein-Paste, Alex;
Langeveld, Jeroen G.;
Tscheikner-Gratl, Franz.
(2022)
Challenges of integrated multi-infrastructure asset management: a review of pavement, sewer, and water distribution networks.
Structure and Infrastructure Engineering
Academic article
-
Fugledalen, Thomas;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2021)
On the influence of input data uncertainty on sewer deterioration models–a case study in Norway.
Structure and Infrastructure Engineering
Academic article
-
Tscheikner-Gratl, Franz;
Caradot, Nicolas;
Cherqui, Frédéric;
Leitão, João P.;
Ahmadi, Mehdi;
Langeveld, Jeroen.
(2020)
Sewer asset management – state of the art and research needs.
Urban Water Journal
Academic literature review
-
Ambauen, Noemi;
Muff, Jens;
Tscheikner-Gratl, Franz;
Trinh, Thuat;
Halle, Cynthia;
Meyn, Thomas.
(2020)
Application of electrochemical oxidation in cold climate regions – Effect of temperature, pH and anode material on the degradation of Bisphenol A and the formation of disinfection by-products.
Journal of Environmental Chemical Engineering
Academic article
-
Tscheikner-Gratl, Franz;
Bellos, Vasilis;
Schellart, Alma;
Moreno-Rodenas, Antonio;
Muthusamy, Manoranjan;
Langeveld, Jeroen.
(2019)
Recent insights on uncertainties present in integrated catchment water quality modelling.
Water Research
Academic literature review
-
Vonach, Tanja;
Kleidorfer, Manfred;
Rauch, Wolfgang;
Tscheikner-Gratl, Franz.
(2019)
An Insight to the Cornucopia of Possibilities in Calibration Data Collection.
Water resources management
Academic article
-
Moreno-Rodenas, Antonio;
Tscheikner-Gratl, Franz;
Langeveld, Jeroen;
Clemens, Francois.
(2019)
Uncertainty analysis in a large-scale water quality integrated catchment modelling study.
Water Research
Academic article
-
Kleidorfer, Manfred;
Tscheikner-Gratl, Franz;
Vonach, Tanja;
Rauch, Wolfgang.
(2018)
What can we learn from a 500-year event? – Experiences from urban drainage in Austria.
Water Science and Technology
Academic article
-
Leimgruber, Johannes;
Steffelbauer, David;
Krebs, Gerald;
Tscheikner-Gratl, Franz;
Muschalla, Dirk.
(2018)
Selecting a series of storm events for a model-based assessment of combined sewer overflows.
Urban Water Journal
Academic article
-
Vonach, Tanja;
Tscheikner-Gratl, Franz;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2018)
A Heuristic Method for Measurement Site Selection in Sewer Systems.
Water
Academic article
-
Winkler, Daniel;
Haltmeier, Markus;
Kleidorfer, Manfred;
Rauch, Wolfgang;
Tscheikner-Gratl, Franz.
(2018)
Pipe failure modelling for water distribution networks using boosted decision trees.
Structure and Infrastructure Engineering
Academic article
-
Tscheikner-Gratl, Franz;
Egger, Patrick;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2017)
Comparison of Multi-Criteria Decision Support Methods for Integrated Rehabilitation Prioritization.
Water
Academic article
-
Mikovits, Christian;
Tscheikner-Gratl, Franz;
Jasper-Tönnies, Alrun;
Einfalt, Thomas;
Huttenlau, Matthias;
Schöpf, Martin.
(2017)
Decision Support for Adaptation Planning of Urban Drainage Systems.
Journal of water resources planning and management
Academic article
-
Tscheikner-Gratl, Franz;
Sitzenfrei, Robert;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2016)
Integrated rehabilitation planning of urban infrastructure systems using a street section priority model.
Urban Water Journal
Academic article
-
Tscheikner-Gratl, Franz;
Sitzenfrei, Robert;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2016)
Enhancement of limited water supply network data for deterioration modelling and determination of rehabilitation rate.
Structure and Infrastructure Engineering
Academic article
-
Tscheikner-Gratl, Franz;
Zeisl, Peter;
Kinzel, Carolina;
Leimgruber, Johannes;
Ertl, Thomas;
Rauch, Wolfgang.
(2016)
Lost in calibration: why people still don’t calibrate their models, and why they still should – a case study from urban drainage modelling.
Water Science and Technology
Academic article
-
Tscheikner-Gratl, Franz;
Mikovits, Christian;
Rauch, Wolfgang;
Kleidorfer, Manfred.
(2014)
Adaptation of sewer networks using integrated rehabilitation management.
Water Science and Technology
Academic article
-
Kleidorfer, Manfred;
Möderl, Michael;
Tscheikner-Gratl, Franz;
Hammerer, Max;
Kinzel, Heiko;
Rauch, Wolfgang.
(2013)
Integrated planning of rehabilitation strategies for sewers.
Water Science and Technology
Academic article
Books
-
Tscheikner-Gratl, Franz;
Clemens, Francois Henri Leon;
Cherqui, Frédéric;
van Duin, Bert.
(2024)
Asset Management of Urban Drainage Systems:
If anything exciting happens, we've done it wrong!.
IWA Publishing
IWA Publishing
Non-fiction book
-
Tscheikner-Gratl, Franz.
(2016)
Integrated Approach for Multi-Utility Rehabilitation Planning of Urban Water Infrastructure – Focus on small and medium sized Municipalities.
Innsbruck University Press
Innsbruck University Press
Academic monograph
PRODUKT
-
Mohan Doss, Prasanna;
Roghani, Bardia;
Bosco, Camillo;
Abdalla, Elhadi Mohsen Hassan;
Rokstad, Marius Møller;
Tscheikner-Gratl, Franz.
(2024)
Sewer Network and Smart Water Meter Data for Modelling and Analysis of Water Distribution and Sewer Networks.
Database
Teaching
Courses
- TVM4130 - Urban Water systems: Grey, blue and green
- TVM4141 - Water and Wastewater Systems, Advanced Course
- TBM4361 - Asset Management for Urban Water Systems
- VM8205 - Asset Management for urban water infrastructure
- TBM4960 - Master's Thesis in Environmental Engineering
- VM8206 - Topics in Urban Water Systems
Supervision
Current PhD-Students:
Shamsuddin Daulat - Interdependencies in multi-infrastructure asset management
Prasanna Mohan Doss - Leak detection and localization tools for improving water smartness in Water Distribution Networks
Bulat Kerimov - Interpretable Models with Graph Neural Networks to support the Green Transition of Critical Infrastructures
Spyros Pritsis - Evolving calibration: How advances in measurements can affect our approach to rainwater modeling
Co-Supervisor for:
Mahdi Bahrami - Developing a digital tool for infrastructure asset management and decision support of nature-based solution
Kevin Vargas Álvarez - Development of a new hybrid hydraulic-machine learning model to assess and forecast the potential risk for Legionella growth and performance of building water systems