Northcliff Reservoir
A reservoir. What Johannesburg Water (JW) reported about it, from March 2025.
Latest JW report
JW reported supplying adequately on 29 September 2026 at 20:30. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:40. JW's page for this board ↗ · JW's image of the board ↗
Live updates during the day: Johannesburg Water ↗ and OurPower ↗. This page keeps the history.
Suburbs it supplies
JW links 22 suburbs to Northcliff Reservoir. Most also draw on other supplies.
Albertskroon, Albertville, Aldara Park, Blackheath, Blairgowrie, Cresta, East Town, Emmarentia, Franklin Roosevelt Park, Greymont, Linden, Montgomery Park, Montroux, Northcliff, Parkhurst, Pierneef Park, Pine Park, Risidale, Robindale, Victory Park, Victory Park Estate SH, Waterval Estate.
Up the supply chain
On 29 September 2026, JW reported Northcliff Reservoir supplying adequately
Where the water comes from, top to bottom, and what JW reported for each part on 29 September 2026. A suburb draws on every supply listed at once; JW does not say which street each one reaches.
Showing 29 September 2026, the last day in the record. Other days: 19 July 2026.
Bulk supply
Northcliff Reservoir: no public JW source names its system or the Rand Water station that feeds it
System
No public JW source names the system for these supplies.
Supply
JW reported supplying adequately.
As printed: “13:10 Supplying adequately.”; “20:30 Supplying adequately.”
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). “On 29 September 2026, JW reported Northcliff Reservoir supplying adequately”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/northcliff-reservoir#fig-chain
The data as a table
| Part | What it is | Feeds | How we know | On 29 September 2026 |
|---|---|---|---|---|
| Unknown | Chain stops | the system | Northcliff Reservoir: no public JW source names its system or the Rand Water station that feeds it | No JW status for it |
| Northcliff Reservoir | Reservoir | JW's page or notice | supplying adequately |
Northcliff Reservoir over time
In 2026 so far, JW reported Northcliff Reservoir short of water on 1 day
What JW reported each day, 3 March 2025 to 29 September 2026, one row a month; the number at the right is the month's days short of water. Based on 54 days with a JW report. 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”. Gaps: Northcliff Reservoir: no report from 3 March 2025 to 18 July 2026.
- 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 Northcliff Reservoir short of water on 1 day”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/northcliff-reservoir#fig-year
The data as a table
| 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 |
|---|---|---|---|---|---|---|---|---|
| March 2025 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 |
| April 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| May 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| June 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| July 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| August 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| September 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| October 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| November 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| December 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| January 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| February 2026 | 0 | 28 | 0 | 0 | 0 | 0 | 0 | 0 |
| March 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| April 2026 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| May 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| June 2026 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| July 2026 | 12 | 31 | 10 | 1 | 0 | 0 | 1 | 0 |
| August 2026 | 22 | 31 | 22 | 0 | 0 | 0 | 0 | 0 |
| September 2026 | 20 | 29 | 20 | 0 | 0 | 0 | 0 | 0 |
From April to September 2026 (six months), JW reported Northcliff Reservoir short of water on 1 of 54 reported days
Days per month short of water, stacked: critically low at the base. The tick is the median supply in the city that month. The strip under each bar is the share of days with a JW report; a month with none says gap. 3 March 2025 to 29 September 2026.
In 2026 so far: 1 day short of water for Northcliff Reservoir, from 54 days with a report. The median supply in the city: 4 days.
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). “From April to September 2026 (six months), JW reported Northcliff Reservoir short of water on 1 of 54 reported days”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/northcliff-reservoir#fig-days
The data as a table
| Month | Days short of water | Days reported | Days in record | City median |
|---|---|---|---|---|
| March 2025 | gap | 0 | 29 | 0 |
| April 2025 | gap | 0 | 30 | 0 |
| May 2025 | gap | 0 | 31 | 0 |
| June 2025 | gap | 0 | 30 | 0 |
| July 2025 | gap | 0 | 31 | 0 |
| August 2025 | gap | 0 | 31 | |
| September 2025 | gap | 0 | 30 | |
| October 2025 | gap | 0 | 31 | |
| November 2025 | gap | 0 | 30 | |
| December 2025 | gap | 0 | 31 | |
| January 2026 | gap | 0 | 31 | |
| February 2026 | gap | 0 | 28 | 0 |
| March 2026 | gap | 0 | 31 | 0 |
| April 2026 | gap | 0 | 30 | 0 |
| May 2026 | gap | 0 | 31 | 0 |
| June 2026 | gap | 0 | 30 | 0 |
| July 2026 | 1 | 12 | 31 | 1 |
| August 2026 | 0 | 22 | 31 | 0 |
| September 2026 | 0 | 20 | 29 | 0 |
On Northcliff Reservoir, its one outage lasted 15 hours
This is not a forecast. It is how long past outages lasted. Each dot is one past outage, placed by its length: the one outage on Northcliff Reservoir. A hollow dot with an arrow had no reported end: JW's reports stopped before it ended, or it was still going at JW's last report. Either way it lasted at least that long (0 of 1).
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). “On Northcliff Reservoir, its one outage lasted 15 hours”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/northcliff-reservoir#fig-base-rate
The data as a table
| Started | Length | Ended |
|---|---|---|
| 19 July 2026 | 15 hours | 20 July 2026 |
JW's notices gave 13 end times for Northcliff Reservoir. By the stated time, JW's boards showed the water back on none of the 11 that have passed
The water came back after the stated time 11 times; half of those times it was back within 296 days of it. Each row is one end time a JW notice stated for one supply, in date order (hollow dot), against the first board on which JW reported the supply supplying fairly or better and off bypass (filled dot). This asks more than the end of an outage, which comes at JW's first report better than “poor pressure to no water” or “critically low”. An arrow: no such board yet. From 10 notices.
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). “JW's notices gave 13 end times for Northcliff Reservoir. By the stated time, JW's boards showed the water back on none of the 11 that have passed”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/northcliff-reservoir#fig-stated
The data as a table
| Notice | Supply | Reason JW gave | Stated end | First board showing recovery | Against the stated time |
|---|---|---|---|---|---|
| 25 June 2025 | Northcliff Reservoir | Connecting a new PRV system. | 25 June 2025 18:00 | 21 July 2026 15:02 | 390 days 21 hours after the stated time |
| 3 July 2025 | Northcliff Reservoir | Connecting a new PRV system. | 3 July 2025 18:00 | 21 July 2026 15:02 | 382 days 21 hours after the stated time |
| 7 August 2025 | Northcliff Reservoir | Connecting a new PRV system from the existing 400mm to a 160mm pipeline | 7 August 2025 18:00 | 21 July 2026 15:02 | 347 days 21 hours after the stated time |
| 12 August 2025 | Northcliff Reservoir | Tie-in new water pipe to existing mainline | 12 August 2025 18:00 | 21 July 2026 15:02 | 342 days 21 hours after the stated time |
| 12 August 2025 | Northcliff Reservoir | Tie-in new water pipe to existing mainline | 13 August 2025 16:00 | 21 July 2026 15:02 | 341 days 23 hours after the stated time |
| 27 September 2025 | Northcliff Reservoir | Changing the pump configuration at Crosby Pumpstation with the aim to improve the output flows into Brixton and Hursthill 1 reservoirs | 28 September 2025 04:00 | 21 July 2026 15:02 | 296 days 11 hours after the stated time |
| 24 March 2026 | Northcliff Reservoir | Assessment of the internal conditions of the reservoir | 6 April 2026 18:00 | 21 July 2026 15:02 | 105 days 21 hours after the stated time |
| 1 December 2025 | Northcliff Reservoir | Structural repairs of the leaking reservoir; Structural repairs inside the leaking Hursthill 2 Reservoir. | 9 April 2026 16:00 | 21 July 2026 15:02 | 102 days 23 hours after the stated time |
| 24 March 2026 | Northcliff Reservoir | Assessment of the internal conditions of the reservoir | 21 April 2026 18:00 | 21 July 2026 15:02 | 90 days 21 hours after the stated time |
| 1 December 2025 | Northcliff Reservoir | Structural repairs inside the leaking Hursthill 2 Reservoir. | 31 July 2026 17:00 | 2 August 2026 16:50 | 1 day 23 hours after the stated time |
| 1 December 2025 | Northcliff Reservoir | Structural repairs inside the leaking Hursthill 2 Reservoir. | 29 September 2026 16:00 | 29 September 2026 20:30 | 4 hours 30 minutes after the stated time |
| 1 December 2025 | Northcliff Reservoir | Structural repairs inside the leaking Hursthill 2 Reservoir. | 15 December 2026 16:00 | the stated end is still ahead | |
| 1 December 2025 | Northcliff Reservoir | Structural repairs inside the leaking Hursthill 2 Reservoir. | 15 December 2026 17:00 | the stated end is still ahead |
In words
2026 so far: JW reported it at “poor pressure to no water” or “critically low” on 1 day. JW published a report for it on 54 of the 272 days in the record; the other 218 days have no report, and we do not count them as normal. The median supply in the city had 4 such days.
The one outage JW reported on this supply lasted 15 hours. This is a record of the past, not a forecast.
JW's boards first named Northcliff Reservoir on 19 July 2026 and last on 29 September 2026: 93 statuses on 93 boards, over 54 days. 1 of those statuses announced a scheduled overnight closure, which we count apart, never as an outage.
Month by month
Days JW reported Northcliff Reservoir at “poor pressure to no water” or “critically low”, out of the days it reported it at all. A month with few reported days says little.
| Month | Days short of water | Days with a report | Same month a year earlier |
|---|---|---|---|
| March 2025 | No JW report this month | ||
| April 2025 | No JW report this month | ||
| May 2025 | No JW report this month | ||
| June 2025 | No JW report this month | ||
| July 2025 | No JW report this month | ||
| August 2025 | No JW report this month | ||
| September 2025 | No JW report this month | ||
| October 2025 | No JW report this month | ||
| November 2025 | No JW report this month | ||
| December 2025 | No JW report this month | ||
| January 2026 | No JW report this month | ||
| February 2026 | No JW report this month | ||
| March 2026 | No JW report this month | Too few reports to compare | |
| April 2026 | No JW report this month | Too few reports to compare | |
| May 2026 | No JW report this month | Too few reports to compare | |
| June 2026 | No JW report this month | Too few reports to compare | |
| July 2026 | 1 | 12 | Too few reports to compare |
| August 2026 | 0 | 22 | Too few reports to compare |
| September 2026 | 0 | 20 | Too few reports to compare |
Recent JW reports
The last 20 statuses JW printed for Northcliff Reservoir, newest first.
JW reported supplying adequately on 29 September 2026 at 20:30. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:40. JW's page for this board ↗ · JW's image of the board ↗
JW reported supplying adequately on 29 September 2026 at 13:10. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:41. JW's page for this board ↗ · JW's image of the board ↗
JW reported supplying adequately on 28 September 2026 at 13:50. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:42. JW's page for this board ↗ · JW's image of the board ↗
No JW report since 25 September 2026. JW reported supplying adequately on 25 September 2026 at 19:15. The board read “Supplying adequately.” JW put it on its website 28 September 2026 at 10:32. JW's page for this board ↗ · JW's image of the board ↗
No JW report since 25 September 2026. JW reported supplying adequately on 25 September 2026 at 13:25. The board read “Supplying adequately.” JW put it on its website 28 September 2026 at 10:31. JW's page for this board ↗ · JW's image of the board ↗
No JW report since 23 September 2026. JW reported supplying adequately on 23 September 2026 at 18:05. The board read “Supplying adequately.” JW put it on its website 25 September 2026 at 10:41. JW's post ↗ · JW's image of the board ↗
No JW report since 23 September 2026. JW reported supplying adequately on 23 September 2026 at 11:25. The board read “Supplying adequately.” JW put it on its website 25 September 2026 at 10:40. JW's post ↗ · JW's image of the board ↗
No JW report since 22 September 2026. JW reported supplying adequately on 22 September 2026 at 10:45. The board read “Supplying adequately.” JW put it on its website 22 September 2026 at 15:41. JW's post ↗ · JW's image of the board ↗
No JW report since 21 September 2026. JW reported supplying adequately on 21 September 2026 at 19:20. The board read “Supplying adequately.” JW put it on its website 22 September 2026 at 14:09. JW's post ↗ · JW's image of the board ↗
No JW report since 21 September 2026. JW reported supplying adequately on 21 September 2026 at 15:05. The board read “Supplying adequately”. JW put it on its website 22 September 2026 at 14:08. JW's post ↗ · JW's image of the board ↗
No JW report since 18 September 2026. JW reported supplying adequately on 18 September 2026 at 18:25. The board read “Supplying adequately”. JW put it on its website 21 September 2026 at 09:06. JW's post ↗ · JW's image of the board ↗
No JW report since 18 September 2026. JW reported supplying adequately on 18 September 2026 at 10:50. The board read “Supplying adequately.” JW put it on its website 21 September 2026 at 09:04. JW's post ↗ · JW's image of the board ↗
No JW report since 17 September 2026. JW reported supplying adequately on 17 September 2026 at 20:10. The board read “Supplying adequately.” JW put it on its website 18 September 2026 at 10:41. JW's post ↗ · JW's image of the board ↗
No JW report since 17 September 2026. JW reported supplying adequately on 17 September 2026 at 10:40. The board read “Supplying adequately.” JW put it on its website 18 September 2026 at 10:40. JW's post ↗ · JW's image of the board ↗
No JW report since 16 September 2026. JW reported supplying adequately on 16 September 2026 at 15:15. The board read “Supplying adequately”. JW put it on its website 16 September 2026 at 15:56. JW's post ↗ · JW's image of the board ↗
No JW report since 16 September 2026. JW reported supplying adequately on 16 September 2026 at 11:10. The board read “Supplying adequately.” JW put it on its website 16 September 2026 at 15:52. JW's post ↗ · JW's image of the board ↗
No JW report since 15 September 2026. JW reported supplying adequately on 15 September 2026 at 17:00. The board read “Supplying adequately.” JW put it on its website 16 September 2026 at 10:17. JW's post ↗ · JW's image of the board ↗
No JW report since 15 September 2026. JW reported supplying adequately on 15 September 2026 at 11:15. The board read “Supplying adequately”. JW put it on its website 16 September 2026 at 10:11. JW's post ↗ · JW's image of the board ↗
No JW report since 14 September 2026. JW reported supplying adequately on 14 September 2026 at 10:25. The board read “Supplying adequately.” JW put it on its website 15 September 2026 at 11:24. JW's post ↗ · JW's image of the board ↗
No JW report since 11 September 2026. JW reported supplying adequately on 11 September 2026 at 20:20. The board read “Supplying adequately.” JW put it on its website 15 September 2026 at 11:21. JW's page for this board ↗ · JW's image of the board ↗
Past outages
Each row is one outage: a stretch of time JW reported Northcliff Reservoir at “poor pressure to no water” or “critically low”, newest first. An outage has no reported end when JW's reports stopped before it ended, or when it was still going at JW's last report; its length is then a minimum.
| Start | End | Length |
|---|---|---|
| 19 Jul 2026, 19:35 | 20 Jul 2026, 10:08 | 15 hours |
What JW's boards cannot tell you
- 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.
Source: JW's System Update boards and notices, read by us. The full list, and how this record is made.