| No. | Water Service Provider | Infrastructure Facility | County |
| l. | Nyeri Water and Sanitation Company | Ihua Intake Works, Kamakwa Water Treatment Works, Kangemi Sewerage Treatment Works, Gatei Sewerage Treatment Plant, Tetu Water Tank, Hill Farm Water Tank and Mathira Twin Tank. | Nyeri |
| 2 | Embu Water and Sanitation Company | Mwiria Intake Works, Mukangu Water Treatment Works, Kangaru Storage Facilities, Embu SewerageTreatment Plant (Old Stadium), Embu Sewerage Treatment Plant (Dallas) and Majimbo Decentralized Treatment Facility (Dtf) | Embu |
| 3 | Embe Water and Sanitation Company | Thuci Intake Works, Ena Intake Works, Ena Water Treatment Plant, Ishiara Water Treatment Plant, Riandu Storage Tanks and DC Storage Tank | Embu |
| 4 | Meru Water and Sewerage Services | Kathita Intake Works, Gatabora Intake Works, Ask Intake Works, Milimani Water Treatment Works, Kigure Water Treatment Works, Kenya Re Storage Tank,St0l-Storage Tank-KinoruSt02-Storage Tank KaagaSt03-Storage Tank GakoromoneSt04-Storage Tank IrindaGakoromone Sewerage Treatment PlantRwanvange Sewerage Treatment Plant | Meru |
| 5 | Imetha Water and Sanitation Company | MauaMboone & Makenia Intakes Works, Treatment Works-Mboone, Nyambene, KiegoiTiganiaThangatha Mikorwe Intake Works, Water Treatment Works-Kibore, KaramaTimauKongoni Intake Works, Kiambogo Water Treatment WorksNkubuKiuga Ndegwa Intake Works, Nkubu Water Treatment WorksKanyakineKithinu Intake Works, Kanyakine Water Treatment WorksMwimbiMutonga Intake Works, Kithira Water Treatment WorksMitunguuThingithu Intake Works, Gachero Water Treatment Works | Meru |
| 6 | Kirinyaga Water and Sanitation Company | Intake WorksKururu and Kahuhi IntakesNyamindi IntakeRagati IntakeRwamuthambi IntakeRundu and Mukengeria IntakesWater Treatment Plants Ndiriti Treatment PlantSagana TreatmentPlant Githioro Treatment PlantStorage TanksSamson Corner Storage TankWang'uru Elevated TankKirimunge Storage TankKangaita Storage TankKairini Storage Tank | Kirinyaga |
| 7 | Othaya Mukurweini Water Service Company | Gikira Intake Works, Kihuri Water Treatment Plant, Chinga Dam and Treatment Plant | Nyeri |
| 8 | Mathira Water and Sanitation Company | Mathira Intakes/DamsOld Ragati Intake (Cross/Weir)Ragati DamMuthira DamHombe DamTreatment WorksIhwagi Water Treatment PlantKiaigi Sewerage Treatment PlantKirigu Sewerage Pumping StationMajor Tanks2no Masonry Storage TanksKarindundu TankNyana TankKiamachimbi TanksNdimaini TankGakuyu/Gatina TankKiamucheru Tank | Nyeri |
| 9 | Narumoru Water and Sanitation Company | KandaraNgutik Intake Works, Kabunda Water Treatment Plant, Rware StorageTank and KandaraStorage Tank | Nyeri |
| 10 | Nithi Water and Sanitation Company | Gianjuku Intake Works, Chogoria Tank, Tungu Intake, Kiangondu Treatment, Tungu Intake, Kiangondu Treatment Works, Makawani Tank, Kambani Tank, Kieni Tank and Kirenge Tank | Tharaka Nithi |
| 11 | Meru Water and Sewerage Services | Rwanyange Sewerage Treatment Plant | Meru |
| 12 | Nithi Water and Sanitation Company | ChukaRuguti Intake Works, Kirege Water Treatment Works, lkuu Tank, Nthirani Tank and Ntuntuni Sewerage Treatment Plant | Tharaka Nithi |
| | | ChogoriaSouth Maara Intake Works, Kibaranu Water Treatment Plant, Iruma Tank, Kianjagi Tank, Kairuni Tank, Kibura Sewerage Treatment Plant | Tharaka Nithi |
| 13 | KirinyagaWater and Sanitation Company | Kiringa and Thiba Intake Works, Muratiri Water Treatment Works, Kerugoya Kutus Sewerage Treatment Plant | Kirinyaga |
