SECURITIES AND EXCHANGE COMMISSIONSEC FORM 17-C

CURRENT REPORT UNDER SECTION 17
OF THE SECURITIES REGULATION CODE
AND SRC RULE 17.2(c) THEREUNDER

1. Date of Report (Date of earliest event reported)

Dec 15, 2017

2. SEC Identification Number

A199611593

3. BIR Tax Identification No.

005038428

4. Exact name of issuer as specified in its charter

Manila Water Company, Inc.

5. Province, country or other jurisdiction of incorporation

Quezon City, Philippines

6. Industry Classification Code(SEC Use Only)

7. Address of principal office

MWSS Administration Building, 489 Katipunan Road, Balara, Quezon City, Philippines Postal Code 1105

8. Issuer's telephone number, including area code

(02) 981-8122

9. Former name or former address, if changed since last report

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10. Securities registered pursuant to Sections 8 and 12 of the SRC or Sections 4 and 8 of the RSA

Title of Each Class	Number of Shares of Common Stock Outstanding and Amount of Debt Outstanding
Common Shares	2,053,945,884

11. Indicate the item numbers reported herein

Please see attached letter to the SEC and PSE.

The Exchange does not warrant and holds no responsibility for the veracity of the facts and representations contained in all corporate disclosures, including financial reports. All data contained herein are prepared and submitted by the disclosing party to the Exchange, and are disseminated solely for purposes of information. Any questions on the data contained herein should be addressed directly to the Corporate Information Officer of the disclosing party.

Manila Water Company, Inc.MWC

PSE Disclosure Form 4-30 - Material Information/Transactions References: SRC Rule 17 (SEC Form 17-C) and
Sections 4.1 and 4.4 of the Revised Disclosure Rules

Subject of the Disclosure
Tariff Adjustment of Boracay Island Water Company, Inc.
Background/Description of the Disclosure
Please be informed that the Tourism Infrastructure and Enterprise Zone Authority-Regulatory Office (“TIEZA-RO”) has approved the implementation of the second of three (3) tranches of new water rates of the Boracay Island Water Company, Inc., a subsidiary of Manila Water Philippine Ventures, Inc. (“MWPV”). MWPV is a wholly-owned subsidiary of Manila Water Company, Inc. The new rates will be effective fifteen (15) days after its publication in two (2) newspapers of general circulation and the filing of a copy thereof with the University of the Philippines Law Center. Attached is the new tariff table duly-approved by TIEZA-RO for your reference.
Other Relevant Information
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