People queue to collect water from a natural spring in Cape Town, South Africa, Monday, Jan 22, 2018 as the city suffers from one of the worst droughts in recent history. Officials are looking to combat the drought, saying it was looking more likely that it will have to turn off most taps on "Day Zero," or April 21 stating that 60 percent of residents are "callously" using more than the current limit and that the city will fine households that use too much water. (AP Photo/Anwa Essop)
Anwa Essop/AP
People queue to collect water from a natural spring in Cape Town, South Africa, Monday, Jan 22, 2018 as the city suffers from one of the worst droughts in recent history. Officials are looking to combat the drought, saying it was looking more likely that it will have to turn off most taps on "Day Zero," or April 21 stating that 60 percent of residents are "callously" using more than the current limit and that the city will fine households that use too much water. (AP Photo/Anwa Essop)
Now playing
01:16
This major city is running out of water
title: M. C. Schidlowsky on Instagram: "Fire tornado destroyed our line. It threw burning logs across our guard for 45 minutes and pulled our hose 100 plus ft in the air before..." duration: 00:00:00 site: Instagram author: null published: Wed Dec 31 1969 19:00:00 GMT-0500 (Eastern Standard Time) intervention: no description: null
Mary Schidlowsky
title: M. C. Schidlowsky on Instagram: "Fire tornado destroyed our line. It threw burning logs across our guard for 45 minutes and pulled our hose 100 plus ft in the air before..." duration: 00:00:00 site: Instagram author: null published: Wed Dec 31 1969 19:00:00 GMT-0500 (Eastern Standard Time) intervention: no description: null
Now playing
00:41
See 'firenado' snatch firefighter's hose
A photojournalist walks amongst plastic debris blown by strong winds in the residential district of Heng Fa Chuen during Super Typhoon Mangkhut in Hong Kong on September 16, 2018. (Photo by Philip FONG / AFP)        (Photo credit should read PHILIP FONG/AFP/Getty Images)
Philip Fong/AFP/Getty Images
A photojournalist walks amongst plastic debris blown by strong winds in the residential district of Heng Fa Chuen during Super Typhoon Mangkhut in Hong Kong on September 16, 2018. (Photo by Philip FONG / AFP) (Photo credit should read PHILIP FONG/AFP/Getty Images)
Now playing
01:16
The planet's strongest storm, Typhoon Mangkhut, hits Asia
HIROSHIMA, JAPAN - JULY 15:  (CHINA OUT, SOUTH KOREA OUT) Self-Defense Force members continue searching operation on July 15, 2018 in Hiroshima, Japan. More than 100 people were treated for heatstroke as scorching summer heat baked western Japan prefectures hit by recent torrential deluges.  (Photo by The Asahi Shimbun via Getty Images)
The Asahi Shimbun via Getty Images
HIROSHIMA, JAPAN - JULY 15: (CHINA OUT, SOUTH KOREA OUT) Self-Defense Force members continue searching operation on July 15, 2018 in Hiroshima, Japan. More than 100 people were treated for heatstroke as scorching summer heat baked western Japan prefectures hit by recent torrential deluges. (Photo by The Asahi Shimbun via Getty Images)
Now playing
01:38
More than 200 dead as heavy rain pounds Japan
Date07/22/2018 08:36 Duration00:00:58 Edit No7104 Copyright(c) 2018 Thomson Reuters, unless otherwise identified. Full statement available at https://www.thomsonreuters.com/en/copyright.html RestrictionsBroadcasters: NO USE VIETNAM Digital: NO USE VIETNAM . For Reuters customers only. Source FormatHD AudioNATURAL WITH VIETNAMESE NARRATION LocationsYEN BAI/ LAO CAI/PHU THO, VIETNAM SourceVTV Revision2 TopicsDisaster/Accidents,Floods Source News FeedsCore News IDtag:reuters.com,2018:newsml_WD8PTXJ5X:2
REUTERS
Date07/22/2018 08:36 Duration00:00:58 Edit No7104 Copyright(c) 2018 Thomson Reuters, unless otherwise identified. Full statement available at https://www.thomsonreuters.com/en/copyright.html RestrictionsBroadcasters: NO USE VIETNAM Digital: NO USE VIETNAM . For Reuters customers only. Source FormatHD AudioNATURAL WITH VIETNAMESE NARRATION LocationsYEN BAI/ LAO CAI/PHU THO, VIETNAM SourceVTV Revision2 TopicsDisaster/Accidents,Floods Source News FeedsCore News IDtag:reuters.com,2018:newsml_WD8PTXJ5X:2
Now playing
02:49
Over 20 killed by flooding in Vietnam
Photos provided by Lakewood Church on Monday show a flooded building.

Televangelist pastor Joel Osteen's Lakewood Church took on water Monday, according to Lakewood spokesman Donald ILoff. The water have since receded, Iloff tells CNN and the church will be used as a shelter and donation center for Harvey victims. The church does have a flood wall in place but out of caution they will only allow several hundred people to stay on the 2nd floor of the church.
Lakewood Church
Photos provided by Lakewood Church on Monday show a flooded building. Televangelist pastor Joel Osteen's Lakewood Church took on water Monday, according to Lakewood spokesman Donald ILoff. The water have since receded, Iloff tells CNN and the church will be used as a shelter and donation center for Harvey victims. The church does have a flood wall in place but out of caution they will only allow several hundred people to stay on the 2nd floor of the church.
Now playing
01:43
Floods pose more health risks than you may think
CNN
Now playing
00:36
Irma has left Barbuda uninhabitable
Reuters/U PYINNYA LINKARA
Now playing
01:13
Floods cause devastation in Asia
china landslides typhoon megi orig_00002421.jpg
china landslides typhoon megi orig_00002421.jpg
Now playing
00:45
Landslide pummels town
Courtesy Anne and Chris Mackie
Now playing
01:13
Firenado turns into a giant water spout
KEYT
Now playing
01:57
Heatwave, winds fuel deadly fast-moving fires
This picture taken on July 26, 2015 shows a child playing in a fountain on a square to cool himself amid a heatwave in Binzhou, eastern China's Shandong province.   CHINA OUT     AFP PHOTO        (Photo credit should read STR/AFP/Getty Images)
STR/AFP/AFP/Getty Images
This picture taken on July 26, 2015 shows a child playing in a fountain on a square to cool himself amid a heatwave in Binzhou, eastern China's Shandong province. CHINA OUT AFP PHOTO (Photo credit should read STR/AFP/Getty Images)
Now playing
01:14
What NOT to do in a heat wave
Fire burns in Karbole, Sweden, on July 15, 2018. - Due to the dry weather, 80 wildfires burned in Sweden. (Photo by Mats ANDERSSON / TT News Agency / AFP) / Sweden OUT        (Photo credit should read MATS ANDERSSON/AFP/Getty Images)
MATS ANDERSSON/AFP/Getty Images
Fire burns in Karbole, Sweden, on July 15, 2018. - Due to the dry weather, 80 wildfires burned in Sweden. (Photo by Mats ANDERSSON / TT News Agency / AFP) / Sweden OUT (Photo credit should read MATS ANDERSSON/AFP/Getty Images)
Now playing
01:07
Wildfires and deadly heat waves around the world
Heatwave in Asia
Reuters
Heatwave in Asia
Now playing
02:20
Scorching temperatures turn deadly in Asia
A man wipes the sweat from his face in the scorching heat at a business district in Tokyo, Monday, July 23, 2018. Searing hot temperatures are forecast for wide swaths of Japan and South Korea in a long-running heat wave. The mercury is expected to reach 39 degrees Celsius (102 degrees Fahrenheit) on Monday in the city of Nagoya in central Japan and reach 37 in Tokyo. Deaths have been reported almost every day. (AP Photo/Koji Sasahara)
Koji Sasahara/AP
A man wipes the sweat from his face in the scorching heat at a business district in Tokyo, Monday, July 23, 2018. Searing hot temperatures are forecast for wide swaths of Japan and South Korea in a long-running heat wave. The mercury is expected to reach 39 degrees Celsius (102 degrees Fahrenheit) on Monday in the city of Nagoya in central Japan and reach 37 in Tokyo. Deaths have been reported almost every day. (AP Photo/Koji Sasahara)
Now playing
01:19
Japan suffers record-breaking heat wave
Getty Images
Now playing
01:22
Record-breaking super typhoon
CNN —  

When it finally came, restaurant diners rushed outside mid-meal to see the deluge for themselves. Others grabbed buckets to collect precious water from gutters to be used for washing clothes.

The rain that fell on Cape Town Friday evening was cause for celebration in a drought-stricken city headed for “Day Zero” – the day when taps are expected to run dry.

Though whether the brief downpour was enough to delay “Day Zero” – set now for May 11 – remains to be seen.

South Africa’s second-largest city and its surrounding areas received between 2 millimeters and 10 millimeters of rainfall Friday night, according to the Cape Town Weather Office. The city can expect 2 millimeters to 8 millimeters of rainfall Monday evening and into Tuesday morning – less than an inch – with no further rain expected later in the week.

Despite the paucity, the precipitation was a welcome sight for residents who haven’t seen rain since January 22, and they collected water in buckets and tanks, with plans to use it for everything from washing clothes and dishes to flushing toilets.

But it is unlikely to make a significant impact on the city’s largest reservoir, Theewaterskloof Dam, which satellite images show is at dangerously low levels.

’You feel guilty flushing toilets’

Since February 1, residents have seen their water usage downsized from 87 to 50 liters a day – or a little over 13 gallons.

The city is also rushing to upgrade its water systems and is building desalination, aquifer and water-recycling projects to help stretch the current supply.

Defeat Day Zero

“The water restrictions have been crazy, ” 32-year-old Cape Town resident, Wayne Ronne said. “We are not allowed to have baths. We are allowed to have showers, though not every day. We have stocked up [on] bottled water, hand sanitizers and wet wipes. You literally feel guilty when flushing.”

Ronne said when Friday’s rain started, he and his brother took out buckets to collect water from gutters. “This would be used for the washing machine, dishes, etc,” he said.

Another Cape Town resident, 30-year-old Jennifer Stock, said no drop of precious water is wasted in her home. “We shower over buckets, and then use that water elsewhere in the house or garden,” she said.

“We have to think about everything we do, prioritize what we will use our water for – do I want a cup of tea or to be able to keep a small plant alive that will help the bees and birds survive?”

She added, “You can’t have a nice long shower after a hard day’s work.”

People stockpiling water

People queue to collect water from a natural spring outlet in the South African Breweries in Cape Town.
AP
People queue to collect water from a natural spring outlet in the South African Breweries in Cape Town.

Amid the crisis, the city is suffering a shortage of bottled water. The stores that do have water sell out fast and are unable to replenish their stock for days.

Those who can afford bottled water are queuing up at stores before they open. At one local chain grocery store, video shows shoppers swarming pallets of bottled water, clearing them in just minutes.

“The price of bottled water is going up because people are going crazy buying water, so supermarkets are running low on supplies,” said 32-year-old Cape Town resident Shantalie Hewavisenti.

“It’s also a big worry for people in the township community who don’t have the same means as the middle class people,” she said.

What happens next?

Should the government declare “Day Zero” has arrived, faucets will cease to deliver water until the skies open and more rain falls.

On this day, residents will be further rationed to just 25 liters (6.6 gallons), which they will be able to collect only from one of 200 stations. To put that into perspective, each collection point will have to accommodate the water needs of 20,000 residents.

Key institutions – such as schools and hospitals – are expected to continue receiving water after Day Zero, according to officials, who have said contingency plans have been made.

CNN’s Lauren Kent, Shelby Rose, Lindsay Benson, Lauren Moorhouse and Paul P. Murphy contributed to this report