| 17-0527, 17-0127, 16-0220, 16-0184, 16-0140 & 17-0543 | Addendum 2017-105 | |
| 17-0127, 17-0410, 17-0445, 17-0412, 17-0409, 16-0220, 16-0184, 16-0140 & 17-0543 | Addendum 2017-104 | |
| 17-0424, 17-0428(Specification) & 17-0474 | Addendum 2017-103 | |
| 17-0266 & 17-0517 | Addendum 2017-102 | |
| 17-0543, 16-0140, 16-0184, 16-0220, 17-0409, 17-0412, 17-0445 & 17-0410 | Addendum 2017-101 | |
| 17-0325 & 16-0378 | Addendum 2017-100 | |
| 17-0410, 17-0445, 17-0412 & 17-0409 | Addendum 2017-099 | |
| 16-0432, 17-0325, & 16-0378 | Addendum 2017-097 | |
| 17-0361: Supply and Delivery of Coated Paper for printing of reservoir, poster, brochures and other advertising and promotional campaign of ZCWD use | Addendum 2017-096 | |
| Purchase Requisition Nos. 17-0325, 16-0378, 16-0432, & 17-0130 | Addendum 2017-095 | |
| Purchase Requisition Nos. 16-0432, 17-0492 & 17-0130 | Addendum 2017-094 | |
| Purchase Requisition Nos. 16-0506(Schedule of Requirements & Specification) & 17-0504 | Addendum 2017-093 | |
| Purchase Requisition Nos. 17-0346, 17-0351 & 17-0476 | Addendum 2017-092 | |
| Purchase Requisition Nos. 17-0345, 17-0119, 17-0480, 17-0381, 17-0312, 17-0230 & 17-0127 | Addendum 2017-091 | |
| Purchase Requisition Nos. 17-0386, 17-0357, 16-0432, 17-0389, 17-0252, 17-0492 & 17-0130 | Addendum 2017-090 | |
| Purchase Requisition Nos. 17-0492 & 17-0130 | Addendum 2017-089 | |
| Purchase Requisition Nos. 17-0345, 17-0119, 17-0408, 17-0374,17-0480, 17-0381, 17-0196, 17-0392, 17-0441, 17-0407, 17-0312, 17-0230 & 17-0127 | Addendum 2017-088 | |
| 17-0453: Supply and Delivery of PVC Bend & Pipe for Proposed Pipeline at Sitio Limon-Bagacay, Barangay Baluno | Addendum 2017-087 | |
| Purchase Requisition Nos. 17-0492 & 16-0210 | Addendum 2017-086 | |
| 17-0443: Facilitator Services for the Internal Quality Audit and Management Review Training Activities | Addendum 2017-085 | |
| Purchase Requisition Nos. 17-0453, 17-0222 & 17-0335 | Addendum 2017-084 | |
| Purchase Requisition Nos. 17-0410, 17-0412, 17-0445, 17-0409, 17-0374 & 17-0408 | Addendum 2017-083 | |
| Purchase Requisition Nos. 17-0480, 17-0381, 17-0196, 17-0392, 17-0441, 17-0407, 17-0312, 17-0230 & 17-0127 | Addendum 2017-082 | |
| 17-0443: Facilitator Services for the Internal Quality Audit and Management Review Training Activities | Addendum 2017-081 | |
| Purchase Requisition Nos. 17-0408, 17-0374, 17-0327, 17-0283, 17-0324, 17-0321, 17-0325, 17-0320, 17-0409, 17-0445, 17-0412, 17-0410, 17-0446 & 17-0048 | Addendum 2017-080 | |
| 16-0440: Supply, Delivery & commissioning of brand new tire changer for trucks/big tires & portable air compressor for preventive maintenance, repair & servicing of ZCWD motor vehicles/ transportation & equipment | Addendum 2017-079 | |
| Purchase Requisition Nos. 17-0386, 17-0367, 17-0057, 17-0232, 17-0127, 17-0230, 17-0312 & 17-0389 | Addendum 2017-078 | |
| 17-0443: Facilitator Service for the Internal Quality Audit and Management Review Training Activities | Addendum 2017-077 | |
| Purchase Requisition Nos. 17-0196, 17-0392 & 17-0441 | Addendum 2017-076 | |
| Purchase Requisition Nos. 17-0407, 17-0101 & 17-0378 | Addendum 2017-075 | |
| Purchase Requisition Nos. 17-0048, 17-0463 & 17-0446 | Addendum 2017-072 | |
| Purchase Requisition Nos. 17-0320, 17-0325, 17-0321, 17-0324, 17-0283, 16-0378 & 17-0101 | Addendum 2017-071 | |
| Purchase Requisition Nos. 17-0048, 17-0463 & 17-0446 | Addendum 2017-070 | |
| Purchase Requisition Nos. 16-0378 & 17-0101 | Addendum 2017-069 | |
| 17-0226: Supply and Delivery of Wireless Data Network Radio, Wireless Data Network with Dish, Outdoor Cable, Router, RJ45, 5 ports router & Switch for ZCWD Wireless Data network | Addendum 2017-068 | |
| Purchase Requisition Nos. 17-0357 & 16-0412 | Addendum 2017-067 | |
| 17-0223: Supply and Delivery of Brand New Non-Threaded Type PVC Riser with complete accessories for upgrading of Lunzuran Production Well riser pipe | Addendum 2017-066 | |
| Purchase Requisition Nos. 17-0357, 16-0412, 17-0130, 17-0081, 17-0361 & 17-0336 | Addendum 2017-065 | |
| Purchase Requisition Nos. 17-0357, 16-0412, 17-0127, 17-0081, 17-0361, 17-0336, 16-0139, 17-0345, 17-0303 & 17-0230 | Addendum 2017-064 | |
| Purchase Requisition Nos. 17-0361, 17-0336, 17-0139, 17-0303, 17-0345 & 17-0230 | Addendum 2017-063 | |
| Purchase Requisition Nos. 17-0304, 17-0309, 17-0328, 17-0312, 17-0331, 17-0127, 17-0185, 17-0187, 17-0130 & 17-0081 | Addendum 2017-062 | |
| Purchase Requisition Nos. 17-0274 & 17-0346 | Addendum 2017-061 | |
| Purchase Requisition Nos. 17-0190, 17-0130, 17-0081, 17-0354, 17-0371 | Addendum 2017-060 | |
| Purchase Requisition Nos. 17-0044, 16-0139, 17-0303, 17-0345, & 17-0230 | Addendum 2017-059 | |
| 16-0435 | Supply and Delivery of Various Handheld Radio and Mobile Base to be used for communication of Watershed and Environmental Management Division | Addendum 2017-058 |
| Purchase Requisition Nos. 17-0127, 17-0331, 17-0307, 17-0312, 17-0309, 17-0304, 17-0187 & 17-0185 | Addendum 2017-057 | |
| Purchase Requisition Nos. 17-0044, 17-0191, 16-0536, 17-0196, 17-0320, 16-0147, 17-0179, 16-0210, 17-0321, 17-0324, 17-0327 & 17-0325 | Addendum 2017-056 | |
| Purchase Requisition Nos. 17-0331, 17-0312, 17-0328, 17-0309, 17-0304, 17-0187, 17-0187, 17-0185, 17-0201, 17-0067 & 17-0283 | Addendum 2017-055 | |
| Purchase Requisition Nos. 17-0191, 16-0536, 17-0196, 17-0320, 16-0147, 17-0179, 16-0210, 17-0297, 17-0321, 17-0324, 17-0119, 17-0327 & 17-0325 | Addendum 2017-054 | |
| Purchase Requisition Nos. 17-0332, 17-0199, 17-0209, 17-0114 & 17-0206 | Addendum 2017-053 | |
| Purchase Requisition Nos. 17-0130, 16-0218, 17-0057, 17-0201, 17-0283 & 17-0310 | Addendum 2017-052 | |
| Purchase Requisition Nos. 16-0536 & 17-0191 | Addendum 2017-051 | |
| Purchase Requisition Nos. 17-0325, 17-0327, 17-0119, 17-0324, 17-0321, 17-0297, 16-0210, 17-0179, 16-0147, 17-0320 & 17-0196 | Addendum 2017-050 | |