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: 8 days short of water for Helderkruin Tower, from 189 days with a report; 7 days for Horizon Tower, 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 Horizon View's 2 supplies short of water on 11 days
3 March 2025 to 29 September 2026, from 504 days with a JW report.
Horizon Tower
In 2026 so far: 7 days short of water, from 189 days with a JW report.
11531short
2025
MarNo JW boards this month
Apr1
May1
Jun0
Jul2
AugNo JW boards, Aug 2025 to Jan 2026
2026
Feb0
Mar1
Apr1
May1
Jun0
Jul3
Aug1
Sep0
Helderkruin Tower
In 2026 so far: 8 days short of water, from 189 days with a JW report.
11531short
2025
Mar0
Apr1
May1
Jun0
Jul4
AugNo JW boards, Aug 2025 to Jan 2026
2026
Feb0
Mar1
Apr0
May0
Jun0
Jul3
Aug1
Sep3
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 Horizon View's 2 supplies short of water on 11 days”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/suburb/horizon-view#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
Horizon Tower
March 2025
0
29
0
0
0
0
0
0
Horizon Tower
April 2025
1
30
0
0
0
0
1
0
Horizon Tower
May 2025
2
31
1
0
0
1
0
0
Horizon Tower
June 2025
4
30
4
0
0
0
0
0
Horizon Tower
July 2025
12
31
10
0
0
2
0
0
Horizon Tower
August 2025
0
31
0
0
0
0
0
0
Horizon Tower
September 2025
0
30
0
0
0
0
0
0
Horizon Tower
October 2025
0
31
0
0
0
0
0
0
Horizon Tower
November 2025
0
30
0
0
0
0
0
0
Horizon Tower
December 2025
0
31
0
0
0
0
0
0
Horizon Tower
January 2026
0
31
0
0
0
0
0
0
Horizon Tower
February 2026
7
28
7
0
0
0
0
0
Horizon Tower
March 2026
21
31
20
0
0
0
1
0
Horizon Tower
April 2026
30
30
29
0
0
0
1
0
Horizon Tower
May 2026
31
31
30
0
0
0
1
0
Horizon Tower
June 2026
30
30
30
0
0
0
0
0
Horizon Tower
July 2026
31
31
28
0
0
0
3
0
Horizon Tower
August 2026
19
31
17
1
0
0
1
0
Horizon Tower
September 2026
20
29
20
0
0
0
0
0
Helderkruin Tower
March 2025
18
29
18
0
0
0
0
0
Helderkruin Tower
April 2025
22
30
21
0
0
0
1
0
Helderkruin Tower
May 2025
16
31
15
0
0
1
0
0
Helderkruin Tower
June 2025
28
30
27
1
0
0
0
0
Helderkruin Tower
July 2025
23
31
19
0
0
0
4
0
Helderkruin Tower
August 2025
0
31
0
0
0
0
0
0
Helderkruin Tower
September 2025
0
30
0
0
0
0
0
0
Helderkruin Tower
October 2025
0
31
0
0
0
0
0
0
Helderkruin Tower
November 2025
0
30
0
0
0
0
0
0
Helderkruin Tower
December 2025
0
31
0
0
0
0
0
0
Helderkruin Tower
January 2026
0
31
0
0
0
0
0
0
Helderkruin Tower
February 2026
7
28
7
0
0
0
0
0
Helderkruin Tower
March 2026
21
31
20
0
0
0
1
0
Helderkruin Tower
April 2026
30
30
30
0
0
0
0
0
Helderkruin Tower
May 2026
31
31
29
0
0
0
0
2
Helderkruin Tower
June 2026
30
30
30
0
0
0
0
0
Helderkruin Tower
July 2026
31
31
28
0
0
0
3
0
Helderkruin Tower
August 2026
19
31
18
0
0
1
0
0
Helderkruin Tower
September 2026
20
29
17
0
0
1
2
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. Helderkruin Tower and Horizon Tower had water as normal. This year Helderkruin Tower was short of water on 8 of the 189 days JW reported it. A typical reservoir or tower in the city had 4 such days. On Helderkruin Tower, half of its last 8 outages lasted at least 36 hours; the longest since March 2025 lasted 2.2 days. No JW notice we have read names Helderkruin Tower.
On JW's list of towers, June 2024, as Horizon View, Horizon View Ext.1. Source 1 ↗
Outages
JW reported 16 outages on Horizon View's supplies since March 2025. The longest lasted 2.2 days. Every outage, with how long it lasted: Helderkruin Tower and Horizon Tower.
JW's end dates
No JW notice we have read stated an end time for these supplies. Each end date against what happened: Helderkruin Tower and Horizon Tower.
Under strain
In 2026 so far, Horizon View had 11 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. Horizon View 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.