The city of Milan (Italy) lies over an aquifer, which supplies drinking water to about 1,700,000 inhabitants. Groundwater is polluted by improperly disposed of chlorinated hydrocarbons in the 15 to 150 ppb range. The distribution network is fed by wells and pumping plants scattered all over the city area and yield water containing different contaminant species in different amounts, which also vary in time. Our aim has been to evaluate the amounts of pollutants which reach the end user and eventually to estimate the risk they entail. A number of sampling points was established soon after pollution was first detected (1977). [Veramente, fu scoperta nel 1975.] Concentration data from said points allowed the "zoning" of the city: areas were looked for where time-averaged (1 year) concentration values fell within a given range. Zones were defined by a simple statistical preprocessing of data followed by deterministic interpolation. Zone contour sensitivity with respect to data from additional sampling points has been studied. The second problem, i.e. risk assessment, is now being considered. A database containing a detailed city map and the number of inhabitants living in each house block has been created. We can therefore compute: a) how many people drink water containing given levels of given contaminants; b) how high is the toxicological risk in a given city area. These results will be applied to water distribution management and to aquifer reclamation. Moreover, they will be fed back into the data collection procedure, in order to optimise thee location of sampling points and the time intervals between samples.

Crosta, G., Herold, R., & Ziglio, G. (1986). Evaluaton of population risk due to a contaminated multi-input water distribution network. In EUCHEM Conference: Sampling strategies and techniques in environmental analysis - Abstracts. Bilthoven : EUCHEM.

Evaluaton of population risk due to a contaminated multi-input water distribution network

Crosta, GFF
Membro del Collaboration Group
;
1986

Abstract

The city of Milan (Italy) lies over an aquifer, which supplies drinking water to about 1,700,000 inhabitants. Groundwater is polluted by improperly disposed of chlorinated hydrocarbons in the 15 to 150 ppb range. The distribution network is fed by wells and pumping plants scattered all over the city area and yield water containing different contaminant species in different amounts, which also vary in time. Our aim has been to evaluate the amounts of pollutants which reach the end user and eventually to estimate the risk they entail. A number of sampling points was established soon after pollution was first detected (1977). [Veramente, fu scoperta nel 1975.] Concentration data from said points allowed the "zoning" of the city: areas were looked for where time-averaged (1 year) concentration values fell within a given range. Zones were defined by a simple statistical preprocessing of data followed by deterministic interpolation. Zone contour sensitivity with respect to data from additional sampling points has been studied. The second problem, i.e. risk assessment, is now being considered. A database containing a detailed city map and the number of inhabitants living in each house block has been created. We can therefore compute: a) how many people drink water containing given levels of given contaminants; b) how high is the toxicological risk in a given city area. These results will be applied to water distribution management and to aquifer reclamation. Moreover, they will be fed back into the data collection procedure, in order to optimise thee location of sampling points and the time intervals between samples.
No
abstract + poster
Scientifica
drinking water supply; volatile halocarbons; contamination; population exposure; epidemiology; toxicology
English
EUCHEM Conference: Sampling strategies and techniques in environmental analysis
Crosta, G., Herold, R., & Ziglio, G. (1986). Evaluaton of population risk due to a contaminated multi-input water distribution network. In EUCHEM Conference: Sampling strategies and techniques in environmental analysis - Abstracts. Bilthoven : EUCHEM.
Crosta, G; Herold, R; Ziglio, G
File in questo prodotto:
File Dimensione Formato  
1986-0120_CrostaGF-HeroldR-ZiglioG.pdf

accesso aperto

Descrizione: PDF 1.3 assembled from JPEG scans by Canon MP Navigator EX v. 2.0.2. Copyright by Canon Inc. 2008 and from TIFF scans by Ricoh IM C2000; final editing by Preview Version 6.0.1 (765.6) Copyright © 2002–2012 Apple Inc.
Tipologia di allegato: Submitted Version (Pre-print)
Dimensione 3.06 MB
Formato Adobe PDF
3.06 MB Adobe PDF Visualizza/Apri
1983-1221_CasaliT-GiovanardiA.pdf

accesso aperto

Descrizione: PDF 1.3 ottenuto da: scansione a 300 dpi - colore con Canon MP620 e conversione in PDF ricercabile.
Tipologia di allegato: Other attachments
Dimensione 536.53 kB
Formato Adobe PDF
536.53 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/386102
Citazioni
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
Social impact