A means to develop a comparative assessment of the risks of available wastewater effluent disposal options on a local scale needs to be developed to help local decision-makers make decisions on options such as direct or indirect potable reuse options. These options have garnered more interest as a result of water supply limitations in many urban areas. This risk assessment was developed from a risk assessment developed at the University of Miami in 2001 and Florida Atlantic University (FAU) in 2023. Direct potable reuse and injection wells were deemed to have the lowest risk in the most recent study by FAU. However, the injection well option may not be available everywhere. As a result, a more local means to assess exposure risk is needed. This paper outlines the process to evaluate the public health risks associated with available disposal alternatives which may be very limited in some areas. The development of exposure pathways can help local decision-makers define the challenges, and support later expert level analysis upon which public health decisions are based.
References
[1]
Bloetscher, F., Meeroff, D.E., Conboy, K., Sham, C.H., Gergen, R.E., Gallant, R., Hart, J., Muniz, A., Shibata, T., Tuccillo, M.E. and Englehardt, J.D. (2024) Assessing Relative Risks of Municipal Wastewater Disposal Options for Southeast Florida. Risk Analysis. https://doi.org/10.1111/risa.14301
[2]
Muñoz, I., Gómez-Ramos, M. J., Agüera, A., Fernández-Alba, A.R., García-Reyes, J. F. and Molina-Díaz, A. (2009) Chemical Evaluation of Contaminants in Wastewater Effluents and the Environmental Risk of Reusing Effluents in Agriculture. TrAC Trends in Analytical Chemistry, 28, 676-694. https://doi.org/10.1016/j.trac.2009.03.007
[3]
Compagni, R.D., Gabrielli, M., Polesel, F., Turolla, A., Trapp, S., Vezzaro, L. and Antonelli, M. (2020) Risk Assessment of Contaminants of Emerging Concern in the Context of Wastewater Reuse for Irrigation: An Integrated Modelling Approach. Chemosphere, 242, Article ID: 125185. https://doi.org/10.1016/j.chemosphere.2019.125185
[4]
Díaz-Garduño, B., Pintado-Herrera, M.G., Biel-Maeso, M., Rueda-Márquez, J.J., Lara-Martín, P.A., Perales, J.A., Manzano, M.A., Garrido-Pérez, C. and Martín-Díaz, M.L. (2017) Environmental Risk Assessment of Effluents as a Whole Emerging Contaminant: Efficiency of Alternative Tertiary Treatments for Wastewater Depuration. Water Research, 119, 136-149. https://doi.org/10.1016/j.watres.2017.04.021
[5]
Rish, W.R. (2005) A Probabilistic Risk Assessment of Class I Hazardous Waste Injection Wells. Underground Injection Science and Technology, 52, 93-135. https://doi.org/10.1016/S0167-5648(05)52010-0
[6]
Sloss, E.M., Geschwind, S.A., McCaffrey, and Ritz, B.R. (1996) Groundwater Recharge with Reclaimed Water: An Epidemiologic Assessment in Los Angeles County, 1987-1991. RAND, Santa Monica.
[7]
Reynolds, K.A. (2000) Human Viruses Found in Groundwater Recharge Sites. Water Conditioning and Purification, 42, 148-150.
[8]
Link, M., Von Der Ohe, P.C., Voß, K. and Schäfer, R.B. (2017) Comparison of Dilution Factors for German Wastewater Treatment Plant Effluents in Receiving Streams to the Fixed Dilution Factor From Chemical Risk Assessment. Science of the Total Environment, 598, 805-813. https://doi.org/10.1016/j.scitotenv.2017.04.180
[9]
Amoueyan, E., Ahmad, S., Eisenberg, J.N.S., Pecson, B. and Gerrity, D. (2017) Quantifying Pathogen Risks Associated with Potable Reuse: A Risk Assessment Case Study for Cryptosporidium. Water Research, 119, 252-266. https://doi.org/10.1016/j.watres.2017.04.048
[10]
Choudri, B.S., Charabi, Y. and Ahmed, M. (2018) Health Effects Associated with Wastewater Treatment, Reuse and Disposal. Water Environment Research, 90, 1759-1776. https://doi.org/10.2175/106143018X15289915807425
[11]
Soller, J.A., Eftim, S.E. and Nappier, S.P. (2018) Direct Potable Reuse Microbial Risk Assessment Methodology: Sensitivity Analysis and Application to State Log Credit Allocations. Water Research, 128, 286-292. https://doi.org/10.1016/j.watres.2017.10.034
[12]
Purnell, S., Halliday, A., Newman, F., Sinclair, C. and Ebdon, J. (2020) Pathogen Infection Risk to Recreational Water Users, Associated with Surface Waters Impacted by de Facto and Indirect Potable Reuse Activities. Science of the Total Environment, 722, Article ID: 137799. https://doi.org/10.1016/j.scitotenv.2020.137799
[13]
Soller, J.A., Eftim S.E. and Nappier, S.P. (2019) Comparison of Predicted Microbiological Human Health Risks Associated with de Facto, Indirect, and Direct Potable Water Reuse. Environmental Science & Technology, 53, 13382-13389. https://doi.org/10.1021/acs.est.9b02002
[14]
Tanaka, H., Takashi, A., Schroeder, E.D. and Tchobanoglous, G. (1998) Estimating the Safety of Wastewater Reclamation and Reuse Using Enteric Virus Monitoring Data, Water Environment Research, 70, 39-51. https://doi.org/10.2175/106143098X126874
[15]
Gerba, C.P. and Rose, J. (1983) Estimating Viral Disease Risk from Drinking Water. In: Cothern, C.R., Ed., Comparative Environmental Risk Assessment, Lewis Publishers, Boca Raton, 117-135.
[16]
Hutzler, N.J. and Boyle, W.C. (1982) Risk Assessment in Water Reuse, In: Middlebrooks, E.J., Ed., Water Reuse, Ann Arbor Science Publishers, Ann Arbor.
[17]
Hutzler, N.J. and Boyle, W.C. (1980) Wastewater Risk Assessment. Journal of Environmental Engineering, 106, 919. https://doi.org/10.1061/JEEGAV.0001098
[18]
Regli, S., Pore, J.B., Haas, C.N. and Gerba, C.P. (1991) Modeling the Risk from Giardia and Viruses in Drinking Water. Journal of the American Water Works Association, 83, 76-84. https://doi.org/10.1002/j.1551-8833.1991.tb07252.x
[19]
Asano, T. and Sakaji, R. (1990) Virus Risk Analysis in Wastewater Reclamation and Reuse. In: Hahn, H.H. and Klute, R., Eds., Chemical Water and Wastewater Treatment, Springer-Verlag, Berlin, 483-496. https://doi.org/10.1007/978-3-642-76093-8_32
[20]
Englehardt, J.D., Amy, V.P., Bloetscher, F., Chin, D.A., Fleming, L.E., Gokgoz, S., Solo-Gabriele, H., Rose, J.B., and Tchobanoglous, G. (2001) Comparative Assessment of Human and Ecological Impacts for Municipal Wastewater Disposal Methods in Southeast Florida: Deep Wells, Ocean Outfalls, and Canal Discharges. University of Miami, Coral Gables.
[21]
Bloetscher, F. (2003) The Impact of Location of ASR Wells on Deep Well Risk Assessment. AWWA Source Water Protection Conference—Albuquerque, NM, January, 2003.
[22]
Bloetscher, F. (2002) The Risk Impact of Class 1 Injection Wells on ASR Wells. Annual Forum of the Groundwater Protection Council, San Francisco, CA, September 2002.
[23]
Bloetscher, F., Englehardt, J.D., Chin, D.A., Rose, J.B., Tchobanoglous, G., Amy, V.P. and Gokgoz, S. (2005) Comparative Assessment Municipal Wastewater Disposal Methods in Southeast Florida. Water Environment Research, 77, 480-490. https://doi.org/10.2175/106143005X67395
[24]
Englehardt, J.D. (1997) Bayesian Benefit-Risk Analysis for Sustainable Process Design. Journal of Environmental Engineering, 123, 71-78. https://doi.org/10.1061/(ASCE)0733-9372(1997)123:1(71)
[25]
Bloetscher, F. (2001) A Risk Management Model for Finding Minimum Distance Requirements to Meet Reasonable Assurance of No Negative Impacts on Potable Water Supply Wells from Alternative Injection Well Programs. Ph.D. Thesis, University of Miami, Coral Gables.
[26]
Apostolakis, G. (1990) The Concept of Probability in Safety Assessments of Technological Systems. Science, 250, 1359-1364. https://doi.org/10.1126/science.2255906
[27]
Sackman, H. (1975) Delphi Critique: Expert Opinion, Forecasting, and Group Process. Lexington Books, Lexington Mass.
[28]
Shannon, C.E. (1949) The Mathematical Theory of Communication. The University of Illinois Press, Urbana.
[29]
Jarabek, A. and Hasselblad, V. (1990) Inhalation Reference Concentration Methodology: Impact of Domestic Adjustments and Future Directions Using the Confidence Profile Methods.84th Annual Meeting and Exhibition of the Air and Waste Management Association, Vancouver, June 1984, Article No. 91-173.3.
[30]
Englehardt, J.D. and Lund, J. (1993) Information Theory in Risk Analysis. Journal of Environmental Engineering, 118, 890-904. https://doi.org/10.1061/(ASCE)0733-9372(1992)118:6(890)
[31]
Englehardt, J.D. and Swartout, P. (2006) Predictive Bayesian Microbial Dose-Response Assessment Based on Suggested Self-Organization in Primary Illness Response: Cryptosporidium Parvum. Risk Analysis, 26, 543-554. https://doi.org/10.1111/j.1539-6924.2006.00745.x
[32]
Englehardt, J. (1995) Predicting Incident Size from Limited Information. Journal of Environmental Engineering, 121, 455-464. https://doi.org/10.1061/(ASCE)0733-9372(1995)121:6(455)
[33]
Bloetscher, F. (2019) Using Predictive Bayesian Monte Carlo-Markov Chain Methods to Provide a Probablistic Solution for the Drake Equation. Acta Astronautica, 155, 118-130. https://doi.org/10.1016/j.actaastro.2018.11.033
[34]
Ross, S.M. (1985) Introduction to Probability Models. 3rd Edition, Academic Press, San Diego.
[35]
Press, S.J. (1989) Bayesian Statistics: Principles, Models and Applications. John Wiley & Sons, New York.
[36]
Aitchison, J. and Dunsmore I.R. (1975) Statistical Prediction Analysis. Cambridge University Press, Cambridge. https://doi.org/10.1017/CBO9780511569647