CFU

Colony Forming Unit

NTU

Nephelometric Turbidity Unit

V_F

filtration rate, filter velocity

Q

flow rate, design capacity

RF

Roughing Filter, Roughing Filtration

DF

Dynamic Filter

IF

Intake Filter

DRFS

Downflow Roughing Filter in Series

HRF

Horizontal-flow Roughing Filter

MHRF

Modified Horizontal-flow Roughing Filter

URFL

Upflow Roughing Filter in Layers

URFS

Upflow Roughing Filter in Series

SSF

Slow Sand Filter, Slow Sand Filtration

ESA

External Support Agency

NGO

Non-Governmental Organisation

AIT

Asian Institute of Technology

BNHP

Blue Nile Health Project

CAPM

Chinese Academy of Preventive Medicine

CDC

Centre for Developing Countires

CEPIS

Centro Panamericano de Ingeniería Sanitaria y Ciencias del Ambiente

CINARA

Instituto de Investigación y Desarrollo en Agua Potable, Saneamiento Básico y Conservación del Recurso Hídrico

EAWAG

Swiss Federal Institute for Environmental Science and Technology

EIER

Ecole Inter Etats d'lngenieurs de l'Equipement Rural

ETH

Swiss Federal Institute of Technology

EWW

Ethiopian Water Works

Helvetas

Swiss Association for Development and Cooperation

IRC

International Water and Sanitation Centre

IWSA

International Water Supply Association

NEERI

National Environmental Engineering Research Institute

NWDB

National Water Supply & Drainage Board

PAHO

Pan American Health Organisation

SANDEC

Water & Sanitation in Developing Countries

SDC

Swiss Development Cooperation

SDR

Swiss Disaster Relief Unit

SKAT

Swiss Centre for Development Cooperation in Technology and Management

SVGW

Swiss Gas and Water Industry Association

UDSM

University of Dar es Salaam

UNDP

United Nations Development Programme

UNR

Universidad Nacional de Rosario

UoZ

University of Zimbabwe

USP

Universidade de São Paulo

WB

World Bank

WHO

World Health Organisation

WRC

Water Research Commission

ZHAS

Zhejiang Health and Anti-Epidemic Station