1-H benzotriazole). An assessment of the toxicity of the identified organic chemicals indicated that none appeared to pose

Overview

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Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

• receiving waters. Fent et al. (2006) indicated that a better information Table S1).
• organic contaminants (Table 1) together with ammonia and with an autosampler setup at each sewer carrier that transited
• Table 1 Suppliers of standard Chemical Supplier and compound number Limit of
• comprising one collection each from the sewers of Buffalo numbers of internal standards are detailed in Table 1. These
• trations were also measured from triplicate samples collected nal standards in the range of 80–114% (Table 1). Peaks were
• waters of the four locations as single or replicate samples (as information described in Supporting information Tables S2
• transferred into 1250 mL PET bottles with unique labora- The detection of a range of pharmaceuticals and personal-
• refrigerated autosampler carousel bottles. Those sample con- Table 1) used in-house method TC0065. This was based
• Supporting information Tables S4 and S5, respectively.
• preparation, the samples were analysed by inductively cou- Table 2. This suite of compounds was analysed for in
• able stock solutions. Quality control samples were run with occurring from the ERSs (Table 2). Not surprisingly, the
• detailed in Table 1. Metal analysis quantification limits were the dry-weather samples, where all 18 organic chemi-
• based on APHA method 4500-NH3 H. Samples were kept detectable (Table 2). A very similar pattern of chemical
• analysis then analysed by flow injection analysis (FIA) (Table 2). In the receiving waters, the number of detect-
• in Table 1. Ammonia quantification limits were defined as particular, acetaminophen (paracetamol) as a very com-
• spike recoveries averaged 99%. tralia (ASM 2020) without consideration of over-the-
• zoa, and viruses in the faeces of a diverse range of animal products (Zhao et al. 2017), along with their incorpora-
• cate MST assay of Ahmed et al. (2019) was used to analyse the inevitable dilutions that they will be subjected to. For
• Table 2 Summary of organic chemicals detected in sewer influent with wet weather sample collection coinciding with overflow spills
• Influent sampled under dry weather conditions Minimum Median 75th percentile 90th percentile Maximum
• Sewer influent sampled under diluted rainfall ingress conditions Minimum Median 75th percentile 90th percentile Maximum N
• Receiving water sampled downstream of ERSs during wet weather Minimum Median 75th percentile 90th percentile Maximum N
• Detection limits of 0.25 μg/L for three benzotriazoles, and 1 μg/L for the other contaminants applied in calculation of these distributions;
• rises information presented in Table 3 for each sewer site. ume for the Gymea study location (Supporting information
• For each of the four sewer locations, the concentrations of Table S1) was nearest to Gymea Site 2. All ERSs under
• contaminants differed substantially (Table 3). For example, 10 m into the same waterway reach (Fig. 1, Supporting infor-
• were considerably lower than at the other three (Table 3). On porting information Table S1) that conveyed spills from the
• were relatively similar at all four sites (Table 3). Sucralose the creek the other two ERSs were gravity fed and spilt from
• lar across sites (Table 3). Cotinine, FB351, naproxen, and allowed one of these two ERSs to also spill influent from
• As described above for Table 2, of the 12 contaminants (as evident in Supporting Fig. S1) compared to the other
• ing waters (as summarised in Table 2) when sampling coin- at disparate distances along the sewerage system (Fig. 1).
• tion Table S6) compared to the relatively uniform pattern be considered in the contribution to dilution achievable in
• collected under diluted rainfall ingress conditions (Table 3). weather events. Wet-weather overflow median spill volumes
• Analysis of receiving water samples from the Darling from October 2018 to October 2022 were 0.04 ML (range
• zotriazole as shown for Gymea Bay Site 1 in Supporting falo sewer, 4.8 ML (range 0.03 to 146 ML over 31 spills)
• able concentrations in samples from the Vineyard receiving Supporting information Table S7 shows the percentage of
• water site (Supporting information Table S6). The other collection events (occasions) where the eight organic chemi-
• receiving water samples (Supporting information Table S6). for any of the eight organic chemicals at Gymea Site 2 or at
• (Supporting information Table S6). receiving water site, acetaminophen was measurable in two
• (Supporting information Table S1), while safe access con- all eight organic chemicals were detected at the Vineyard
• Table 3 Percentile distribution of contaminant concentrations (μg/L) of influent collected within sewer carrier when a spill was occurring from ERSs between October 2018 and February 2020
• Detection limits values of 0.25 μg/L for three forms of benzotriazole and 1 μg/L for other nine contaminants applied in distribution calculation; Vineyard 38 samples were collected with stand-

Methods (brief)

• sanitary (separate to stormwater) sewerage systems. Water samples were collected by autosamplers from up to eight wet
• Keywords Organic chemicals · Influent · Sanitary sewage · Autosamplers · Ammonia · Dilution
• samplers to identify some 254 organic chemicals present overflow volumes were obtained from a hydraulic sewer sys-
• ily translate passive sampler detection to receiving water current study was also employed for the study of the com-
• investigation of chemicals collected by autosamplers trig- overflows in the megacity of Sydney, Australia (Besley and
• tary sewerage system was the main driver of sanitary sewer Field sample collection
• from the sewerage system. To the best of our knowledge, Water samples were collected with ISCO Avalanche port-
• no other studies have assessed the ecological risk of con- able refrigerated (4 °C) autosamplers at the four locations
• tracking a suite of contaminants detected in influent and in autosamplers were set up at receiving water sites, compris-
• organic contaminants (Table 1) together with ammonia and with an autosampler setup at each sewer carrier that transited
• objectives: (i) to examine the types of contaminants detected samples, the autosamplers were triggered by spider-logger
• Total iron ICPMS standards 5.0
• Filterable aluminium ICPMS standards 5.0
• Filterable iron ICPMS standards 5.0
• Filterable copper ICPMS standards 0.5
• Filterable manganese ICPMS standards 0.5
• Filterable lead ICPMS standards 0.1
• Filterable zinc ICPMS standards 1.0

Implications

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Wiki pages this source may touch

• Shellfish (shrimp, crab, lobster, clams, oysters, mussels)
• Baby Sunscreen, Mineral (ZnO + TiO2)
• Cadmium
• Aluminum

Verification notes

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Update history

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