Your street may differ: each report covers a reservoir or tower and the area it feeds, and higher streets lose water first. What JW's words mean
Day by day
In 2026 so far: 11 days short of water for Randjieslaagte Reservoir, from 189 days with a report; 5 days for Illovo Reservoir, from 189. A typical supply in the city, the median one (half had fewer), had 4 days.
Each square is a day, as JW reported it for a supply: a reservoir or tower that JW reports on. The number at the right is the month's days short of water.
In 2026 so far, JW reported at least one of Wynberg's 2 supplies short of water on 16 days
3 March 2025 to 29 September 2026, from 566 days with a JW report.
Illovo Reservoir
In 2026 so far: 5 days short of water, from 189 days with a JW report.
11531short
2025
Mar3
Apr0
May2
Jun2
Jul6
AugNo JW boards, Aug 2025 to Jan 2026
2026
Feb0
Mar2
Apr0
May0
Jun0
Jul0
Aug1
Sep2
Randjieslaagte Reservoir
In 2026 so far: 11 days short of water, from 189 days with a JW report.
11531short
2025
Mar0
Apr0
May0
Jun7
Jul4
AugNo JW boards, Aug 2025 to Jan 2026
2026
Feb0
Mar0
Apr2
May3
Jun4
Jul0
Aug2
Sep0
water as normal
supplying fairly
JW warned
low, or weak in places
short of water
critically low
shut for the night
not on the scale
no JW report
still filling in
JW's reported status of the reservoir or tower, not measured water at taps. Boards from March 2025.
Source: Johannesburg Water's System Update boards and notices, read by us. How this record is made.
Cite this figure
watersearch (2026). “In 2026 so far, JW reported at least one of Wynberg's 2 supplies short of water on 16 days”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/suburb/wynberg#fig-year
The data as a table
Supply
Month
Days reported
Days in record
Adequate or fair
Poor pressure in places, or low
Warning: no water may occur
Poor pressure to no water
Critically low
Overnight closure
Illovo Reservoir
March 2025
18
29
15
0
0
0
3
0
Illovo Reservoir
April 2025
12
30
12
0
0
0
0
0
Illovo Reservoir
May 2025
13
31
11
0
0
0
2
0
Illovo Reservoir
June 2025
28
30
20
6
0
0
2
0
Illovo Reservoir
July 2025
23
31
12
4
0
3
3
0
Illovo Reservoir
August 2025
0
31
0
0
0
0
0
0
Illovo Reservoir
September 2025
0
30
0
0
0
0
0
0
Illovo Reservoir
October 2025
0
31
0
0
0
0
0
0
Illovo Reservoir
November 2025
0
30
0
0
0
0
0
0
Illovo Reservoir
December 2025
0
31
0
0
0
0
0
0
Illovo Reservoir
January 2026
0
31
0
0
0
0
0
0
Illovo Reservoir
February 2026
7
28
7
0
0
0
0
0
Illovo Reservoir
March 2026
21
31
18
0
0
1
1
1
Illovo Reservoir
April 2026
30
30
28
1
0
0
0
1
Illovo Reservoir
May 2026
31
31
28
0
1
0
0
2
Illovo Reservoir
June 2026
30
30
27
3
0
0
0
0
Illovo Reservoir
July 2026
30
31
30
0
0
0
0
0
Illovo Reservoir
August 2026
20
31
18
1
0
0
1
0
Illovo Reservoir
September 2026
20
29
15
2
0
1
1
1
Randjieslaagte Reservoir
March 2025
18
29
18
0
0
0
0
0
Randjieslaagte Reservoir
April 2025
13
30
13
0
0
0
0
0
Randjieslaagte Reservoir
May 2025
12
31
12
0
0
0
0
0
Randjieslaagte Reservoir
June 2025
28
30
18
3
0
0
7
0
Randjieslaagte Reservoir
July 2025
23
31
16
3
0
2
2
0
Randjieslaagte Reservoir
August 2025
0
31
0
0
0
0
0
0
Randjieslaagte Reservoir
September 2025
0
30
0
0
0
0
0
0
Randjieslaagte Reservoir
October 2025
0
31
0
0
0
0
0
0
Randjieslaagte Reservoir
November 2025
0
30
0
0
0
0
0
0
Randjieslaagte Reservoir
December 2025
0
31
0
0
0
0
0
0
Randjieslaagte Reservoir
January 2026
0
31
0
0
0
0
0
0
Randjieslaagte Reservoir
February 2026
7
28
3
4
0
0
0
0
Randjieslaagte Reservoir
March 2026
21
31
17
4
0
0
0
0
Randjieslaagte Reservoir
April 2026
30
30
23
4
0
2
0
0
Randjieslaagte Reservoir
May 2026
31
31
28
0
0
0
3
0
Randjieslaagte Reservoir
June 2026
30
30
22
4
0
0
4
0
Randjieslaagte Reservoir
July 2026
30
31
30
0
0
0
0
0
Randjieslaagte Reservoir
August 2026
20
31
16
2
0
0
2
0
Randjieslaagte Reservoir
September 2026
20
29
20
0
0
0
0
0
A day counts as short of water when JW's worst report for it that day was “poor pressure to no water” or “critically low”, as happening or expected (expected most often means higher streets). A warning that it may occur does not count.
In short
The latest JW report on this site is from 29 September 2026; the site last read JW's website on 1 October. Illovo Reservoir was critically low. Randjieslaagte Reservoir was supplying fairly. This year Illovo Reservoir was short of water on 5 of the 189 days JW reported it. A typical reservoir or tower in the city had 4 such days. No JW notice we have read names Illovo Reservoir. None of the 8 passed end dates on its page was met.
JW reported 26 outages on Wynberg's supplies since March 2025. The longest lasted 3.9 days. Every outage, with how long it lasted: Illovo Reservoir and Randjieslaagte Reservoir.
JW's end dates
JW posted 11 notices with an end date that list a suburb or system Wynberg's supplies feed. Most name only suburbs, not the reservoir or tower, so the summary at the top uses only a notice that names the supply itself. By the stated time JW's boards showed the water back on none of the 12 end times that have passed. Each end date against what happened: Illovo Reservoir and Randjieslaagte Reservoir.
Under strain
In 2026 so far, Wynberg had 33 days under strain: days when JW reported any of its supplies low or worse, or warned that higher-lying areas may lose water. This is a wider count than days short of water.
The network is linked. Wynberg draws on all its supplies at once, and when one runs low the others carry more. At such times JW's boards sometimes warn of “poor pressure to no water in higher-lying areas”: under strain, higher streets lose water first. JW does not say which streets those are.
What JW's boards cannot tell you
JW's boards report reservoirs and towers, so some things are not in this record:
Whether water reaches your street or your tap.
Which streets lose water first: JW warns of higher-lying areas but does not name the streets.
Why a supply ran low, unless a JW notice gives a reason.
Pipe bursts, tankers and valve work, which are not on the boards.