Indicator bacteria and associated water quality constituents in stormwater and snowmelt from four urban catchments

Galfi, Helen; Österlund, Heléne; Maršálek, Jiří; Viklander, Maria

doi:10.1016/j.jhydrol.2016.05.006

Cited by 37 publications

(21 citation statements)

References 31 publications

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“…Such formations and soils leached out major ions and alkali from sources of the Earth’s crust into the storm sewer baseflow as noted by Galfi et al (2016). …”

Section: Methodsmentioning

confidence: 88%

Mineral and Anthropogenic Indicator Inorganics in Urban Stormwater and Snowmelt Runoff: Sources and Mobility Patterns

Galfi

Österlund

Maršálek

et al. 2017

Water Air Soil Pollut

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Inorganic chemicals in urban stormwater and snowmelt runoff originate from catchment geology and anthropogenic activities. The occurrence, partitioning and mobility of six minerals and six trace metal (TM) indicators of anthropogenic activities were studied in stormwater, snowmelt and baseflow in four urban catchments, and the sampling of inorganics was supplemented by measurements of electrical conductivity (EC), pH and total suspended solids (TSSs). Minerals occurred at concentrations several orders of magnitude higher (1–102 mg/L) than those of TMs (10−2–102 μg/L) and reflected the composition of local groundwater seeping into sewers. Concentrations of Ca, K, Mg and Na were enhanced by baseflow contributions and followed closely the electrical conductivity. Al and Fe minerals occurred in insoluble forms, and their pollutographs were similar to those of TMs, whose concentrations mimicked, to some extent, the flux of TSS. The TMs with the highest and lowest particulate fractions were Cr&Pb and Cu&Zn, respectively. The concentrations of total TMs in snowmelt were two to four times higher than those in stormwater, and both sources likely exceeded some of the stormwater effluent limits (for Cd, Cu and Zn) proposed in Sweden. Where such concentrations depended on water hardness, the risk of toxicity might be reduced by elevated hardness of the monitored snowmelt and stormwater. Recognizing the good ecological status of the study area receiving water, Lake Storsjön, some protection against polluted runoff and snowmelt may be needed and could be achieved by implementing stormwater management measures controlling TSS and TMs.

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“…Such formations and soils leached out major ions and alkali from sources of the Earth’s crust into the storm sewer baseflow as noted by Galfi et al (2016). …”

Section: Methodsmentioning

confidence: 88%

Mineral and Anthropogenic Indicator Inorganics in Urban Stormwater and Snowmelt Runoff: Sources and Mobility Patterns

Galfi

Österlund

Maršálek

et al. 2017

Water Air Soil Pollut

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“…Other researchers have reported increases of E.coli concentrations in small tributaries after rainfall events (Riou et al 2007;Galfi et al 2016), demonstrating the importance of studying the phenomena of pollutant transport from micro-basins, within the context of water resources. The mean E.coli load in the Recanto stream was 586 and 237% higher than in the Santa Angélica and Pylles streams, respectively.…”

Section: Pollutant Loads Transported By Urban Streamsmentioning

confidence: 95%

“…These results indicated the importance of ecosystem services provided by grasslands and urban green spaces in contributing to better water quality (Martinico et al 2014), because the Recanto microbasin has a lower degree of urbanization (21%), compared to the Santa Angélica (47%) and Pylles (81%) areas, leading to a lower specific TDS load. Other studies have also described the influence of urbanization and industrialization on the degradation of water resources in catchments of developed and developing countries including Brazil (Medeiros et al 2013;Daniel et al 2002;Silva et al 2013), Colombia (Sandoval et al 2014), the USA (O 'Neill et al 2013;Gholizadeh et al 2016), South Africa (Gumbo et al 2016), Portugal (Gomes et al 2014), India (Jabeen et al 2014;Jamwal et al 2008), Australia (Hatt et al 2004), Turkey (Bilgin 2015), Sweden (Galfi et al 2016;Berndtsson and Bengtsson 2006) and Finland (Metsäranta et al 2005). …”

Section: Pollutant Loads Transported By Urban Streamsmentioning

confidence: 99%

“…Given the context of the water resources in urban and industrialized areas of Brazil and other developing countries, these streams are highly vulnerable because they receive effluent discharges from small industries and domestic sewage (Machado et al 2018;Galfi et al 2016;Beghelli et al 2015;Poustie and Deletic 2014;Jabeen et al 2014;Sandoval et al 2014;Alves et al 2013;Medeiros et al 2013;Zeilhofer et al 2010;Medeiros et al 2009;Moreira and Fazza 2008;Jamwal et al 2008;Daniel et al 2002;Martinelli et al 1999), which are not monitored or controlled by the environmental agencies. Therefore, studies at this spatial scale can assist in strategic planning and the management of natural resources at municipal and local scales, as well as encourage public policies focusing on water security and the improvement of water quality in urban and rural streams.…”

Section: Introductionmentioning

confidence: 99%

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Water quality, pollutant loads, and multivariate analysis of the effects of sewage discharges into urban streams of Southeast Brazil

Medeiros

Tresmondi

Queiroz

et al. 2017

Energ. Ecol. Environ.

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Water demand, pollution, and climate change threaten water security in industrialized and urbanized regions worldwide, especially in developing countries. Investments in massive infrastructure have often not met the water needs of the population, requiring water resource managers to adopt new approaches, such as decentralized and regionalized management at the micro-basin scale. However, little is known about the impact of anthropogenic activities on the water quality and vulnerability of streams that cross urban areas and feed into the main rivers and reservoirs supplying cities and industrial regions. The main goals of this research were to evaluate the water quality, pollutant loads, and effect of untreated sewage discharges in streams of the Piracicaba river basin, in the municipality of Americana, Southeast Brazil. The water quality parameters evaluated were as follows: pH, dissolved oxygen, electrical conductivity, biochemical oxygen demand, inorganic phosphorus, total phosphorus, total nitrogen, real colour, turbidity, total dissolved solids, metals (Ba, Cr, Cu, Ni, Pb, Cd, and Zn), total coliforms, and Escherichia coli. Descriptive statistics and multivariate analyses were performed. The results revealed chemical and biological degradation of the water resources, and vulnerability of the urban streams due to the release of untreated sewage into these waterways. The findings indicate the need for an immediate implementation of policies to monitor and control discharges of industrial effluents into the sewage collection systems, as well as discharges of sewage into rainwater drainage systems, together with the maintenance of green spaces.

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“…Stormwater management wet ponds have been extensively used all around the globe to mitigate flood peaks and improve water quality in urban streams; however, the water sitting in these shallow ponds tends to absorb heat during dry‐weather sunny days preceding a summer storm event and discharge major heat load in runoff during the event, rendering the habitat unsuitable for cool and cold water fisheries due to undesirable temperature spikes (Booth & Bledsoe, ; Thompson et al, ; Finney et al, ; Galfi, Osterlund, & Marsalek, ; Gazendam, Gharabaghi, McBean, Whiteley, & Kostaschuk, ; Gazendam, Gharabaghi, Jones, & Whiteley, ; Gazendam, Gharabaghi, Ackerman, & Whiteley, ; Kieser, Fang, & Spoelstra, ; Nelson & Palmer, ; Booth, Kraseski, & Rhett Jackson, ; Trenouth, Gharabaghi, & Perera, ; Trenouth & Gharabaghi, , ; Zeiger, Hubbart, Anderson, & Stambaugh, ). Stream temperature is a vital factor for aquatic life and in particular, cold‐water fisheries.…”

Section: Introductionmentioning

confidence: 99%

Urban stormwater thermal gene expression models for protection of sensitive receiving streams

Sattar

Gharabaghi

Sabouri

et al. 2017

Hydrological Processes

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Thermal impact of typical high-density residential, industrial, and commercial land uses is a major concern for the health of aquatic life in urban watersheds, especially in smaller, cold, and coolwater streams. This is the first study of its kind that provides simple easy-to-use equations, developed using gene expression programming (GEP) that can guide the assessment and the design of urban stormwater management systems to protect thermally sensitive receiving streams. We developed 3 GEP models using data collected during 3 years (2009-2011) from 4 urban catchments; the first GEP model predicts event mean temperature at the inlet of the pond; the second model predicts the stormwater temperature at the outlet of the pond; and the third model predicts the temperature of the stormwater after flowing through a cooling trench and before discharging to the receiving stream. The new models have high correlation coefficients of 0.90-0.94 and low prediction uncertainty of less than 4% of the median value of the predicted runoff temperatures. Sensitivity analysis shows that climatic factors have the highest influence on the thermal enrichment followed by the catchment characteristics and the key design variables of the stormwater pond and the cooling trench. The general method presented here is easily transferable to other regions of the world (but not necessarily the exact equations developed here); also through sensitivity and parametric analysis, we gained insight on the key factors and their relative importance in modelling thermal enrichment of urban stromwater runoff.

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Indicator bacteria and associated water quality constituents in stormwater and snowmelt from four urban catchments

Cited by 37 publications

References 31 publications

Mineral and Anthropogenic Indicator Inorganics in Urban Stormwater and Snowmelt Runoff: Sources and Mobility Patterns

Mineral and Anthropogenic Indicator Inorganics in Urban Stormwater and Snowmelt Runoff: Sources and Mobility Patterns

Water quality, pollutant loads, and multivariate analysis of the effects of sewage discharges into urban streams of Southeast Brazil

Urban stormwater thermal gene expression models for protection of sensitive receiving streams

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