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: 10 days short of water for Honeydew Reservoir, from 190 days with a report; 8 days for Boschkop Reservoir, from 190; 1 day for Cosmo City Reservoir, from 190. 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 Sandpark AH's 3 supplies short of water on 16 days
3 March 2025 to 29 September 2026, from 816 days with a JW report.
Cosmo City Reservoir
In 2026 so far: 1 day short of water, from 190 days with a JW report.
11531short
2025
Mar0
Apr0
May0
Jun0
Jul0
AugNo JW boards, Aug 2025 to Jan 2026
2026
Feb1
Mar0
Apr0
May0
Jun0
Jul0
Aug0
Sep0
Boschkop Reservoir
In 2026 so far: 8 days short of water, from 190 days with a JW report.
11531short
2025
MarNo JW boards, Mar to Apr
May0
Jun0
Jul0
AugNo JW boards, Aug 2025 to Jan 2026
2026
Feb0
Mar0
Apr0
May0
Jun6
Jul0
Aug2
Sep0
Honeydew Reservoir
In 2026 so far: 10 days short of water, from 190 days with a JW report.
11531short
2025
Mar0
Apr0
May0
Jun1
Jul0
AugNo JW boards, Aug 2025 to Jan 2026
2026
Feb0
Mar1
Apr1
May0
Jun2
Jul3
Aug3
Sep0
water as normal
supplying fairly
JW warned
low, or weak in places
short of water
critically low
shut for the night
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 Sandpark AH's 3 supplies short of water on 16 days”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/suburb/sandpark-ah#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
Cosmo City Reservoir
March 2025
18
29
18
0
0
0
0
0
Cosmo City Reservoir
April 2025
22
30
22
0
0
0
0
0
Cosmo City Reservoir
May 2025
16
31
15
0
0
0
0
1
Cosmo City Reservoir
June 2025
28
30
28
0
0
0
0
0
Cosmo City Reservoir
July 2025
21
31
21
0
0
0
0
0
Cosmo City Reservoir
August 2025
0
31
0
0
0
0
0
0
Cosmo City Reservoir
September 2025
0
30
0
0
0
0
0
0
Cosmo City Reservoir
October 2025
0
31
0
0
0
0
0
0
Cosmo City Reservoir
November 2025
0
30
0
0
0
0
0
0
Cosmo City Reservoir
December 2025
0
31
0
0
0
0
0
0
Cosmo City Reservoir
January 2026
0
31
0
0
0
0
0
0
Cosmo City Reservoir
February 2026
7
28
5
0
0
1
0
1
Cosmo City Reservoir
March 2026
21
31
20
1
0
0
0
0
Cosmo City Reservoir
April 2026
30
30
30
0
0
0
0
0
Cosmo City Reservoir
May 2026
31
31
29
0
0
0
0
2
Cosmo City Reservoir
June 2026
30
30
29
0
0
0
0
1
Cosmo City Reservoir
July 2026
30
31
27
0
0
0
0
3
Cosmo City Reservoir
August 2026
21
31
16
3
0
0
0
2
Cosmo City Reservoir
September 2026
20
29
18
1
0
0
0
1
Boschkop Reservoir
March 2025
0
29
0
0
0
0
0
0
Boschkop Reservoir
April 2025
0
30
0
0
0
0
0
0
Boschkop Reservoir
May 2025
1
31
1
0
0
0
0
0
Boschkop Reservoir
June 2025
26
30
25
0
0
0
0
1
Boschkop Reservoir
July 2025
18
31
15
0
0
0
0
3
Boschkop Reservoir
August 2025
0
31
0
0
0
0
0
0
Boschkop Reservoir
September 2025
0
30
0
0
0
0
0
0
Boschkop Reservoir
October 2025
0
31
0
0
0
0
0
0
Boschkop Reservoir
November 2025
0
30
0
0
0
0
0
0
Boschkop Reservoir
December 2025
0
31
0
0
0
0
0
0
Boschkop Reservoir
January 2026
0
31
0
0
0
0
0
0
Boschkop Reservoir
February 2026
7
28
7
0
0
0
0
0
Boschkop Reservoir
March 2026
21
31
20
1
0
0
0
0
Boschkop Reservoir
April 2026
30
30
30
0
0
0
0
0
Boschkop Reservoir
May 2026
31
31
31
0
0
0
0
0
Boschkop Reservoir
June 2026
30
30
24
0
0
6
0
0
Boschkop Reservoir
July 2026
30
31
30
0
0
0
0
0
Boschkop Reservoir
August 2026
21
31
18
1
0
2
0
0
Boschkop Reservoir
September 2026
20
29
20
0
0
0
0
0
Honeydew Reservoir
March 2025
18
29
18
0
0
0
0
0
Honeydew Reservoir
April 2025
17
30
17
0
0
0
0
0
Honeydew Reservoir
May 2025
14
31
14
0
0
0
0
0
Honeydew Reservoir
June 2025
26
30
25
0
0
0
1
0
Honeydew Reservoir
July 2025
21
31
21
0
0
0
0
0
Honeydew Reservoir
August 2025
0
31
0
0
0
0
0
0
Honeydew Reservoir
September 2025
0
30
0
0
0
0
0
0
Honeydew Reservoir
October 2025
0
31
0
0
0
0
0
0
Honeydew Reservoir
November 2025
0
30
0
0
0
0
0
0
Honeydew Reservoir
December 2025
0
31
0
0
0
0
0
0
Honeydew Reservoir
January 2026
0
31
0
0
0
0
0
0
Honeydew Reservoir
February 2026
7
28
7
0
0
0
0
0
Honeydew Reservoir
March 2026
21
31
17
3
0
0
1
0
Honeydew Reservoir
April 2026
30
30
29
0
0
0
1
0
Honeydew Reservoir
May 2026
31
31
30
0
0
0
0
1
Honeydew Reservoir
June 2026
30
30
28
0
0
1
1
0
Honeydew Reservoir
July 2026
30
31
27
0
0
0
3
0
Honeydew Reservoir
August 2026
21
31
13
5
0
2
1
0
Honeydew Reservoir
September 2026
20
29
18
2
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. Boschkop Reservoir, Cosmo City Reservoir and Honeydew Reservoir were supplying fairly or better. This year Honeydew Reservoir was short of water on 10 of the 190 days JW reported it. A typical reservoir or tower in the city had 4 such days. On Honeydew Reservoir, half of its last 9 outages were over within 20 hours; the longest since March 2025 lasted 45 hours. No JW notice we have read names Honeydew Reservoir. None of the 7 passed end dates on its page was met.
Cosmo City Reservoir, 29 September 2026: water as normal at 13:18 (JW: “Supplying adequately”), then closed overnight on purpose at 20:40 (JW: “Outlet closed overnight as part of Water Demand Management”).
JW put it on its website 1 October 2026 at 13:40. JW's page for this board ↗ · JW's image of the board ↗
Sandpark AH draws on three supplies at once: Boschkop Reservoir, Cosmo City Reservoir and Honeydew Reservoir. JW does not say which street each one reaches.
JW posted 12 notices with an end date that list a suburb or system Sandpark AH'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 17 end times that have passed. Each end date against what happened: Boschkop Reservoir, Cosmo City Reservoir and Honeydew Reservoir.
Under strain
In 2026 so far, Sandpark AH had 30 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. Sandpark AH 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.