Cited by 340Fecal contamination and water qualityWastewater Treatment and ReusePharmaceutical and Antibiotic Environmental Impacts

Faecal contamination of greywater and associated microbial risks

Ottoson, Jakob, Stenström, Thor Axel·2003·Water Research

Abstract

The faecal contamination of greywater in a local treatment system at Vibyåsen, north of Stockholm, Sweden was quantified using faecal indicator bacteria and chemical biomarkers. Bacterial indicator densities overestimated the faecal load by 100-1000-fold when compared to chemical biomarkers. Based on measured levels of coprostanol, the faecal load was estimated to be 0.04 g person(-1) day(-1). Prevalence of pathogens in the population and the faecal load were used to form the basis of a screening-level quantitative microbial risk assessment (QMRA) that was undertaken for rotavirus, Salmonella typhimurium, Campylobacter jejuni, Giardia lamblia and Cryptosporidium parvum. The different exposure scenarios simulated--direct contact, irrigation of sport fields and groundwater recharge--gave unacceptably high rotavirus risks (0.04 < Pinf < 0.60) despite a low faecal load. The poor reduction of somatic coliphages, which were used as a virus model, in the treatment was one main reason and additional treatment of the greywater is suggested. Somatic coliphages can under extreme circumstances replicate in the wastewater treatment system and thereby underestimate the virus reduction. An alternative QMRA method based on faecal enterococci densities estimated similar risks as for rotavirus. Growth conditions for Salmonella in greywater sediments were also investigated and risk modelling based on replication in the system increased the probability of infection from Salmonella 1000-fold, but it was still lower than the risk of a rotavirus infection.

Integrity signals

Registry

Crossref · 10.1016/s0043-1354(02)00352-4

Cites

54 of 54 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Studies by Eriksson et al. (2002) and Ottoson and Stenstrom (2003) revealed a large collection of excreta-related pathogens associated with greywater.

    “Studies conducted by Eriksson et al. (2002) and Ottoson and Stenstrom (2003) revealed a large collection of excreta-related pathogens associated with greywater.”

    From Greywater Characteristics, Treatment Systems, Reuse Strategies and User Perception—a Review (2018) · cites this paper as Ottoson and Stenstrom 2003

  • Inappropriate food handling in the kitchen and direct handling of contaminated food are sources of enteric pathogenic bacteria such as Salmonella and Campylobacter into greywater.

    “Inappropriate food handling in the kitchen and direct handling of contaminated food have been identified as sources of enteric pathogenic bacteria such as Salmonella and Campylobacter into greywater (Maimon et al. 2014; Ottoson and Stenstrom 2003).”

    From Greywater Characteristics, Treatment Systems, Reuse Strategies and User Perception—a Review (2018) · cites this paper as Ottoson and Stenstrom 2003

Cites

Flagged first, then by citations

1 of the 55 references couldn’t be matched to a known paper.

Research works printed but not linked: 4

  1. Jackson, 2000, Greywater re-use—benefit or liability? The UK Perspective, Water, 21, 38
  2. Trujillo, 1998, Potential for greywater recycle and reuse in New Mexico, New Mexico J Sci, 38, 293
  3. Gerba, 1995, Water quality of graywater treatment system, Water Sci Technol, 31, 109
  4. Nichols, 1992, Survey of Sydney's coastal environment, Aust Water Wastewater Assoc J, Water, 19, 32

Cited by

Sorted by citations

Authors
Ottoson, J., & Stenström, T. A.
Affiliations
Swedish Institute (SE)
Corresponding author
Ottoson, Jakob
Venue
Water Research
Publisher
Elsevier BV
Published
2003-02
Volume
37
Issue
3
Pages
645-655
ISSN
0043-1354 (ISSN-L)
OpenAlex
W2043053897
Cited by
339
References
55
Citations by year
2026: 10 · 2025: 7 · 2024: 15 · 2023: 14 · 2022: 18 · 2021: 13 · 2020: 13 · 2019: 21 · 2018: 20 · 2017: 13 · 2016: 19 · 2015: 26 · 2014: 22 · 2013: 21 · 2012: 12
FWCI
9.46
Type
journal article
Language
en
Open access
closed
Locations
  • Water Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Fecal contamination and water quality
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
Keywords
greywater, fecal contamination, fecal indicator bacteria, chemical markers, coprostanol, quantitative microbial risk assessment, rotavirus, Salmonella typhimurium, Campylobacter jejuni, Giardia lamblia, Cryptosporidium parvum, somatic coliphages, groundwater recharge, fecal enterococci
MeSH terms
Bacteria, Conservation of Natural Resources, Feces, Models, Theoretical, Rotavirus, Waste Disposal, Fluid, Water Supply, Biomarkers, Risk Assessment

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review