Metro Manila, Philippines Customers of Maynilad Water Services in Caloocan, Malabon, Manila, Navotas, Quezon City, and Valenzuela will encounter water service interruptions for at least nine hours beginning July 12.

The service interruptions are an offshoot of lower water allocation from Metro Manila’s only source — Angat Dam — from 50 cubic meters per second (cms) to 48 cms in light of declining reservoir level below the 180-meter minimum operating mark.

The service interruption will affect around 591,000 connections beginning 7 p.m. The west zone concessionaire advised customers to stock up on supply as water hoarding will result in higher bills.

In a press briefing on Monday, Ronald Padua, Maynilad Water Supply Operations head, said supply will normalize beginning 4 a.m., but some remote and elevated barangays will have longer interruption until 6 a.m.

When asked when the service interruptions will end, Padua said: “Di ko pa masasagot ngayon. Hopefully, magkaroon ng pag-ulan sa Ipo watershed. Magiging reactive ang execution namin nito depende sa dating ng tubig sa La Mesa portal.”

[Translation: I cannot answer that for now. Hopefully, there will be rains on the Ipo watershed. Our execution will be reactive depending on the water level in La Mesa portal.]

The Angat-Ipo-La Mesa system is a major provider of water to Metro Manila. Padua said with the allocation of 48 cms from Angat Dam, water flowing to the La Mesa portal is only at 44 cms, which is not enough for Maynilad customers.

Authorities are also preparing for a much lower water level in Angat Dam amid the El Niño phenomenon.

“Kung ito man ay mangyayari sometime in the fourth quarter of 2023, may iba pa kaming projects na onstream na magiging operational na by then,” Padua said.

[Translation: If the onset will happen sometime in the fourth quarter of 2023, there are projects already onstream that would be operational by then]

Below is the list of barangays that will be affected by water service interruptions:

Caloocan

From 7 p.m. to 4 a.m. — 1-20, 21 (A. Mabini Ave., 4th Ave., PNR Rail Road, M. Francisco St.), 22, 24, 27-28, 31, 35 (J.P. Rizal St., Tambakan St., Sawata Area 1), 49, 52-79, 93 (10th Ave., 11th Ave., 9th St., 11th St.,), 97-98, 101 (10th Ave., 9th St., 8th Ave., Ilang-Ilang St.), 102-116, 121-131, 148-149, 152-155, 161 (West side of NLEX), 167-168 (Deparo-Bagumbong, Kabatuhan), 169 (Dolmar), 171 (Deparo-Bagumbong, Evergreen, Parkview, Sampaloc, Solar, Villa Luisa), 174 (Bellefonte), 177 (Almar, Castle Spring, Del Rey, Lillesville, Matrix), 178-180, 182-188

From 7 p.m. to 6 a.m. — 168 (Casimiro, Congressional-Rainbow, Deparo-T. Samson, Esperanza, Natividad, PLC, Rainbow, Sitio Mapalad, Susano-Iglesia,T Samson, Tomas), 169 (BF Homes, Diamante, T. Samson), 170 (Amparo Novaville, SM Homes), 171 (Bankers, Congressional-Rainbow, Kingstown, Rainbow, Senate, Union), 172 (Magdalena, Urduja), 173(Congressional-Rainbow, Hillcrest, Magdalena, Union), 174 (Coaster, La Forteza, Opel, Pag-asa Homesite, Pag-asa Subd., Thunderbird), 175 (Barugo, Brixtonville, Congressional-Model, Franville, La Forteza, Leyland, Opel) 176 (Phase 4, 9 & 10, Bagong Silang), 177 (Area D, Capitol Parkland, Calamansian, Leticia, Sto. Nino-Maligaya)

Malabon

From 7 p.m. to 4 a.m. — Acacia, Baritan, Bayan-Bayanan, Catmon, Concepcion, Flores, Longos, Muzon, Niugan, Potrero, San Agustin, Tinajeros, Tonsuya, Tugatog

From 7 p.m. to 6 a.m. — Dampalit, Hulong Duhat, Tañong

Manila

From 7 p.m. to 4 a.m. — 1-10, 18, 20, 48-66, 68-71, 74-76, 78, 81, 119-121, 124-153, 155, 160, 163, 168-172, 177-186, 198-276, 202-A, 281-289, 291-325, 329-330, 335-384, 388, 390-450, 452-520, 570-571, 576, 626-672, 659-A, 660-A, 664-A, 674, 676, 696-701, 726-733, 745-762, 769, 803, 80

Navotas

From 7 p.m. to 4 a.m. — Bagumbayan North, Bagumbayan South, Bangkulasi, Daanghari, Navotas East, Navotas West, North Bay Boulevard North, NBBS Dagat-Dagatan, NBBS Kaunlaran, NBBS Proper, San Jose, San Rafael, San Roque, Sipac-Almacen, Tangos North and South, Tanza 1&2

Quezon City

From 7 p.m. to 4 a.m. — Apolonio Samson, Bagbag (Rockville 2 Subd.), Balingasa, Capri, Commonwealth, Dona Josefa Marcos, Greater Fairview, Greater Lagro, Gulod, Holy Spirit, Lourdes, Maharlika, Manresa, Masambong, Novaliches Proper, Pag-ibig Sa Nayon, Pasong Putik (North Ventures Commercial Corp.), St. Peter, Salvacion, San Agustin (Dona Rosario, Gen. Luis, Millionaires Subd Susano/Gen. Luis area, Quirino Highway- Dumalay, Susano, St. Luke’s School, TS Cruz Subd., FB de Jesus, Greenfields 1), San Bartolome (ABC Development Corp., Bernardo, Good Haven, PLDT, Quirino Highway, Rolling Meadows 1, SM Prime Holdings, St. Francis Subd., Susana) , San Isidro Labrador, San Jose, Sangandaan, Santa Teresita, Sto. Domingo, Sauyo, Siena, Sta. Lucia, Sta. Monica, Talayan, Tatalon

From 7 p.m. to 5 a.m. ​—​​​​​​ Bagong Silangan, Batasan Hills (Bagong Silangan Elem School, Bagong Silangan Health Center, Bagong Silangan High School and Multi-Purpose Hall, JP Rizal – Left and Right Side), Commonwealth (Damside, Motorola, Nokia), Payatas (Bistekville 1 Multipurpose Hall, BJMP Quezon City Jail, Doña Nicasia Dialysis Health Center, DSWD-Dormitory, Legaspi, MSSD Natl. Govt Center, Majaas, Molave, Molave Youth Home (Bahay Pag-Asa), Payatas B Annex Elementary School, Payatas B Elementary School, Payatas Elementary School, Payatas High School, Payatas Super Health Center, Quezon City Drug Treatment And Rehabilitation Center, Quezon City Public Library Payatas Branch, San Juan Bautista, San Miguel Social Development Center, Villa Gracia, Violago Parkwoods, Visayas)

From 7 p.m. to 6 a.m. — Bagbag (King William, Mindanao Ave., Odelco Subd., Quirino Highway, San Pedro 9 Subd. Sauyo Road), Batasan Hills (Adams, Batasang Pambansa, COA Region IV office, Congressional, Creek, House of Representatives- Annex, IBP Road, Pratt, Pres. Corazon C. Aquino Elem School, Sitio Kaliwa, The Church Of Jesus Christ Of Latter Day Saints), Commonwealth (Birds International Inc., Commonwealth Elementary School and Annex, Commonwealth Health Center, Commonwealth High School, DMMA, IBP Road, Kapalaran, Kaunlaran, Manuel L Quezon Elementary School, NGC Health Center, PUP Commonwealth Campus, Starbright Land Realty Corp., Task Force Commo, Waterhole), Kaligayahan , Nagkaisang-Nayon (East Los Angeles, East Berkeley, P. Dela Cruz, Goodwill Homes 1, Odelco Subd.), Pasong Putik (Arctic Zone Tube Ice Corp., Catleya, Champaca, Maligaya Subd., Kaligayahan Health Ctr, Maligaya, Maligaya Elementary School, Maligaya Health Center/Marciano, Pamahay Dr., SM Prime Holding, SMC Mass Rail Transit 7, Inc., Zabarte Subd), Payatas (DSWD, DSWD-CO (NHTO), DSWD-KALAHI, Everlasting St., IBP Road, Litex Road, Lupang Pangako Elementary School, Lupang Pangako Payatas B Health Center, Lupang Pangako Ph-3 Clemente St, Payatas A Elementary School, Payatas A Health Center, Sampaguita), San Agustin ( Greenfields III and Jordan), San Bartolome (Along P. dela Cruz from ACF Subd. to Magsaysay Ave., Metrogreen Subd., Parokya ng Pagkabuhay, Quirino Highway, Diamond St., Greenheights Subd., ACF, Rainbow Homes 1 Subd., Simforosa St.), Talipapa

Valenzuela

From 7 p.m. to 4 a.m. — Arkong Bato, Balangkas, Bisig, Coloong, Dalandanan, Gen. T. De Leon, Isla, Karuhatan, Mabolo, Malanday, Malinta, Marulas, Maysan, Palasan, Parada, Pariancillo Villa, Paso de Blas, Pasolo, Poblacion, Polo, Rincon, Tagalag, Viente Reales, Wawang Pulo