Unaville AH
Last Johannesburg Water (JW) report: Tue 29 Sep 2026, 20:10
Lenasia High Level: short of water on 16 days this year.
From 188 days with a JW report. A typical reservoir or tower in the city had 4.
At JW's last report: Level low
JW has not reported Lenasia South Terminal Reservoir this year.
JW lists Unaville AH under both supplies and does not say which streets each one reaches.
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: 16 days short of water for Lenasia High Level Reservoir, from 188 days with a report. 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 Unaville AH's 2 supplies short of water on 16 days
3 March 2025 to 29 September 2026, from 278 days with a JW report.
Lenasia High Level Reservoir
In 2026 so far: 16 days short of water, from 188 days with a JW report.
Lenasia South Terminal Reservoir
- 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 Unaville AH's 2 supplies short of water on 16 days”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/suburb/unaville-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 |
|---|---|---|---|---|---|---|---|---|---|
| Lenasia High Level Reservoir | March 2025 | 18 | 29 | 16 | 0 | 0 | 0 | 2 | 0 |
| Lenasia High Level Reservoir | April 2025 | 12 | 30 | 12 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | May 2025 | 12 | 31 | 12 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | June 2025 | 25 | 30 | 22 | 3 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | July 2025 | 23 | 31 | 13 | 7 | 0 | 0 | 3 | 0 |
| Lenasia High Level Reservoir | August 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | September 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | October 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | November 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | December 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | January 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | February 2026 | 7 | 28 | 3 | 2 | 0 | 0 | 2 | 0 |
| Lenasia High Level Reservoir | March 2026 | 23 | 31 | 22 | 0 | 0 | 0 | 1 | 0 |
| Lenasia High Level Reservoir | April 2026 | 30 | 30 | 30 | 0 | 0 | 0 | 0 | 0 |
| Lenasia High Level Reservoir | May 2026 | 24 | 31 | 14 | 1 | 0 | 5 | 1 | 3 |
| Lenasia High Level Reservoir | June 2026 | 30 | 30 | 21 | 6 | 0 | 0 | 0 | 3 |
| Lenasia High Level Reservoir | July 2026 | 31 | 31 | 21 | 1 | 0 | 0 | 6 | 3 |
| Lenasia High Level Reservoir | August 2026 | 22 | 31 | 9 | 7 | 0 | 0 | 1 | 5 |
| Lenasia High Level Reservoir | September 2026 | 21 | 29 | 8 | 10 | 0 | 0 | 0 | 3 |
| Lenasia South Terminal Reservoir | March 2025 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | April 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | May 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | June 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | July 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | August 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | September 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | October 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | November 2025 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | December 2025 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | January 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | February 2026 | 0 | 28 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | March 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | April 2026 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | May 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | June 2026 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | July 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | August 2026 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lenasia South Terminal Reservoir | September 2026 | 0 | 29 | 0 | 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. That day Lenasia High Level Reservoir was low at 13:10 and closed overnight on purpose at 20:10. Unaville AH gets its water from two reservoirs. This year Lenasia High Level Reservoir was short of water on 16 of the 188 days JW reported it. A typical reservoir or tower in the city had 4 such days. On Lenasia High Level Reservoir, half of its last 10 outages were over within 19 hours; the longest since March 2025 lasted 2.2 days. No JW notice we have read names Lenasia High Level Reservoir.
Latest JW report
Lenasia High Level Reservoir, 29 September 2026: level low at 13:10, the worst status in this report (JW: “Supplying fairly but low”), then closed overnight on purpose at 20:10 (JW: “Outlet closed overnight”).
JW put it on its website 1 October 2026 at 13:40. JW's page for this board ↗ · JW's image of the board ↗
Lenasia South Terminal Reservoir: JW has not reported it on any status board we have read.
Also on OurPower ↗.
Where Unaville AH gets its water
Unaville AH draws on two supplies at once: Lenasia High Level Reservoir and Lenasia South Terminal Reservoir. JW does not say which street each one reaches.
| Supply | System | How JW links it to Unaville AH |
|---|---|---|
| Lenasia High Level Reservoir | Deep South | Listed on JW's pages, as Unaville A.h.. Source 1 ↗ |
| Lenasia South Terminal Reservoir | Deep South | Listed on JW's pages, as Unaville A.h.. Source 1 ↗ Source 2 ↗ |
Outages
JW reported 14 outages on Unaville AH's supplies since March 2025. The longest lasted 2.2 days. Every outage, with how long it lasted: Lenasia High Level Reservoir and Lenasia South Terminal Reservoir.
JW's end dates
JW posted 2 notices with an end date that list a suburb or system Unaville 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 3 end times that have passed. Each end date against what happened: Lenasia High Level Reservoir and Lenasia South Terminal Reservoir.
Under strain
In 2026 so far, Unaville AH had 43 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. Unaville 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.
Source: JW's System Update boards and notices, read by us. The full list, and how this record is made.