rapid assessment of drinking-water quality in the republic of tajikistan

Annex 4.
Primary stratification a
Steps of the RADWQ survey
Technology category
Population
served
STAT
(%)
INV
(%)
Included
in
RADWQ
Reasons for including or
excluding
Utility piped supplies 58.9 41.8 YES Improved technology: MORE than 5% of
population
Community-managed piped supplies 0.0 0.0 NO Improved technology: LESS than 5% of
population
Boreholes or tubewells 1.4 1.4 NO Improved technology: LESS than 5% of
population
Protected dug wells 2.2 2.2 NO Improved technology: LESS than 5% of
population
(Protected) springs 9.6 10.4 YES Improved technology: MORE than 5% of
population
Transported water 2.4 2.4 NO Improved technology: LESS than 5% of
population
Community rainwater systems 0.0 0.0 NO Improved technology: LESS than 5% of
population
Open sources (rivers, channels,
ariks)
25.5 41.8 NO Unimproved technology according to
JMP
Primary
stratification
number
1 282
0
0
0
318
0
0
0
Totals 100.0 100.0 1 600
a
INV = data derived from the rayon database. STAT = data derived from the republican SES.
Secondary stratification
Broad
area
(oblast) a RADWQ Proportion
number (%)
Utility piped supplies
Sec. Strat.
No. a
Cluster
size
Weeks or
clusters
required
Household
samples
RADWQ
number
Proportion
(%)
Protected springs
Sec. Strat.
No.
Cluster
size
Weeks or
clusters
required
Household
samples
RRS & 526 39.4 253 30 9 5.0 444 33.9 108 20 6 2.0
Dushanbe
Khatlon 359 26.9 173 20 9 3.0 420 32.1 103 15 7 2.0
Sughd 427 32.0 205 20 11 4.0 189 14.4 46 15 4 1.0
GBAO 24 1.8 12 12 1 1.0 256 19.6 63 12 6 1.0
Totals 1 336 100.0 643 30 13 1 309 100.0 320 23 6
a
GBAO = Gorno-Badakhshan Autonomous Oblast. RRS = rayons under direct republican subordination. Sec. Strat. No. = secondary
stratification number.
Total team weeks 83
Utility piped supply 1st sampling round 30
Utility piped supply 2nd sampling round 30
Protected spring 23
Total weeks for field implantation 21
(83 weeks with 4 teams)
51