Water Science and Technology

Volume 41 Number 7

Contents

1–7

Risk assessment model for a waterborne outbreak of cryptosporidiosis

P. Gale

9–16

The effect of preozonation on microorganism and particle removal

J.Y. Gaubert, C. Piet, D. Gatel, P. Bonne, J. Hutchison and J. Cavard

17–22

Performance testing and operational experience of a Fibrotex plant installed to treat a 40 Ml/d groundwater source

J. Hutchison, D. Horner and G. Pearce

23–29

Impact of purification procedures on the viability and infectivity of Cryptosporidium parvum oocysts

T.R. Slifko, A. Coulliette, D.E. Huffman and J.B. Rose

31–37

Impact of a wastewater treatment plant on Cryptosporidium oocysts and Giardia cysts occurring in a surface water

E. Carraro, E. Fea, S. Salva and G. Gilli

39–46

Effects of ozonation and chlorination on viability and infectivity of Cryptosporidium parvum oocysts

T. Hirata, D. Chikuma, A. Shimura, A. Hashimoto, N. Motoyama, K. Takahashi, T. Moniwa, M. Kaneko, S. Saito and S. Maede

47–52

Synergism in sequential disinfection of Cryptosporidium parvum

J.L. Rennecker, B. Corona-Vasquez, A.M. Driedger and B.J. Mariñas

53–59

Ozonation of bromide-containing drinking waters:a delicate balance between disinfection and bromate formation

U. von Gunten and U. Pinkernell

61–66

Bromate formation under ozonation conditions to inactivate Cryptosporidium

G. Amy, C. Douville, B. Daw, J. Sohn, C. Galey, D. Gatel and J. Cavard

67–77

Cryptosporidium contamination hazard assessment and risk management for British groundwater sources

B.L. Morris and S.D. Foster

79–86

Source and occurrence of Giardia and Cryptosporidium in Paris rivers

V. Rouquet, F. Homer, J.M. Brignon, P. Bonne and J. Cavard

87–92

Examination of Giardia and Cryptosporidium in water samples and fecal specimens in Taiwan

B-M. Hsu, C. Huang, Y-F. Hsu and C-L.L. Hsu

93–101

Removal of Cryptosporidium by high rate contact filtration: the performance of the prospect water filtration plant during the Sydney water crisis

P. Mazounie, F. Bernazeau and P. Alla

103–110

An optimised and standardised test to determine the presence of the protozoa Cryptosporidium and Giardia in water

G. Stanfield, E. Carrington, F. Albinet, B. Compagnon, N. Dumoutier, B. Hambsch, A. Lorthioy, G. Medema, H. Pezoldt, M-R. de Roubin, A. de Lohman and T. Whitmore

111–117

Optimization of the Envirochek capsule method and immunomagnetic separation procedure for the detection of low levels of Cryptosporidium in large drinking water samples

A. Pezzana, Ph. Vilaginès, F. Bordet, D. Coquard, B. Sarrette and R. Vilaginès

119–125

Inactivation of Cryptosporidium spp. oocysts with ozone and ultraviolet irradiation evaluated by in vitro excystation and animal infectivity

Y. Kanjo, I. Kimata, M. Iseki, S. Miyanaga, H.Okada H. Okada, C. Banno, M. Matsumoto and Y. Shimada

127–134

Inactivation of Cryptosporidium parvum oocysts and other microbes in water and wastewater by electrochemically generated mixed oxidants

M.J. Casteel, M.D. Sobsey and M.J. Arrowood

135–142

Enhanced particle removal in drinking water treatment plants – case studies

P. Lipp and G. Baldauf

143–147

UKWIR initiatives for implementing expert group recommendations to minimise Cryptosporidium risk in water treatment–a summary review

T. Hall, R. Head and D. Holt

149–158

Operation of modern day process plants – minimising Cryptosporidium risk

D. Edwards

159–163

Occurrence and separation of Cryptosporidium oocysts in drinking water treatment

P. Dolejš, O. Ditrich, T. Machula, N. Kalousková and G. Puzová

165–171

Removal of sulphite-reducing clostridia spores by full-scale water treatment processes as a surrogate for protozoan (oo)cysts removal

W.A. Hijnen, J. Willemsen-Zwaagstra, P. Hiemstra, G.J. Medema and D. van der Kooij

173–180

Development of a mathematical model of Cryptosporidium inactivation by ozonation

I. Somiya, S. Fujii, N. Kishimoto and R-H. Kim

181–188

Development of ATP assay as a surrogate indicator of viability of Cryptosporidium parvum oocysts

I. Somiya, S. Fujii, N. Kishimoto and R-H. Kim

189–196

Influence of US EPA 1622 method successive steps on the viability of Cryptosporidium oocysts

K. Guyot, M.F. Gireaudot-Liepmann, A. Cabon, I. Riveau-Ricard, M. Lange, J.M. Delattre and E. Dei-Cas

197–202

Enumeration of Cryptosporidium oocysts from surface water concentrates by laser-scanning cytometry

F. Zanelli, B. Compagnon, J.C. Joret and M.R. de Roubin

203–211

Elimination of Giardia cysts, Cryptosporidium oocysts, turbidity and particles in a drinking water treatment plant with clarification and double filtration

F. Ribas, A. Bernal and J. Perramón