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
New Water Tariff Rates
Background/Description of the Disclosure
Effective January 1, 2018, Manila Water Company, Inc. (“Manila Water”) will implement the following adjustments: 1. “C” Factor of 2.80% as applied to the prevailing Average Basic Charge of PhP 24.81 per cubic meter, pursuant to the MWSS Board Resolution No. 2017-140-RO dated October 26, 2017 approving the MWSS-RO Resolution No. 2017-08-CA dated October 18, 2017; and 2. Foreign Currency Differential Adjustment of 2.46% as applied to the 2018 Average Basic Charge of PhP 25.50 per cubic meter, pursuant to the MWSS Regulatory Office Resolution No. 2017-10-CA dated December 8, 2017 and as approved by the MWSS Board Resolution No. 2017-157-RO dated December 13, 2017. Attached is the Table of Standard Rates reflecting the adjustments stated above.
Other Relevant Information
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