SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934 (Amendment No. 48)

Watts Water Technologies, Inc.
(Name of Issuer)

Class A Common Stock, Par Value $0.10 Per Share
(Title of Class of Securities)

_______ 942749102 ______
(CUSIP Number)

David Goldman
GAMCO Investors, Inc.
One Corporate Center
Rye, New York 10580-1435
(914) 921-5000
(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

______________ May 16, 2016 ___________
(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box  .

1

CUSIP No. 942749102
1	Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
 
       Gabelli Funds, LLC 
 
      I.D. No.  13-4044523	
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) 
 
 (a)

(b)
 	
3	Sec use only
 	
4	Source of funds (SEE INSTRUCTIONS)
    00-Funds of investment advisory clients

5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)

6	Citizenship or place of organization
   New York
 	
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With	: 7
:
:
:	Sole voting power
 
609,965 (Item 5)	
	: 8
:
:
:	Shared voting power
 
None	
	: 9
:
:
:	Sole dispositive power
 
609,965 (Item 5)	
	:10
:
:
:	Shared dispositive power
 
None	
11

 	Aggregate amount beneficially owned by each reporting person
 
609,965 (Item 5)	
12

 	Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)	
13

 	Percent of class represented by amount in row (11)
 
2.19%	
14

 	Type of reporting person (SEE INSTRUCTIONS)
    IA	

2

CUSIP No. 942749102
1	Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
 
       GAMCO Asset Management Inc. 
 
 I.D. No.  13-4044521	
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) 
 
 (a)

(b)
 	
3	Sec use only
 	
4	Source of funds (SEE INSTRUCTIONS)
 00-Funds of investment advisory clients
 	
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)

6	Citizenship or place of organization
   New York
 	
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With	: 7
:
:
:	Sole voting power
 
1,438,131  (Item 5)	
	: 8
:
:
:	Shared voting power
 
None	
	: 9
:
:
:	Sole dispositive power
 
1,531,031   (Item 5)	
	:10
:
:
:	Shared dispositive power
 
None	
11

 	Aggregate amount beneficially owned by each reporting person
 
1,531,031   (Item 5)	
12

 	Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)	
13

 	Percent of class represented by amount in row (11)
 
5.50%	
14

 	Type of reporting person (SEE INSTRUCTIONS)
    IA, CO	

3

CUSIP No. 942749102
1	Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
 
      GGCP, Inc. 
 
                                    I.D. No.  13-3056041	
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) 
 
 (a)

(b)
 	
3	Sec use only
 	
4	Source of funds (SEE INSTRUCTIONS)
   None
 	
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)

6	Citizenship or place of organization
Wyoming
 	
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With	: 7
:
:
:	Sole voting power
 
None	
	: 8
:
:
:	Shared voting power
 
None	
	: 9
:
:
:	Sole dispositive power
 
None	
	:10
:
:
:	Shared dispositive power
 
None	
11

 	Aggregate amount beneficially owned by each reporting person
 
None	
 
12

 	Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X	
13

 	Percent of class represented by amount in row (11)
 
0.00%	
14
 	Type of reporting person (SEE INSTRUCTIONS)
    HC, CO	

4

CUSIP No. 09069N108
1	Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
 
       Associated Capital Group, Inc.                                                                                  I.D. No. 47-3965991	
 	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) 
 
(a)

(b)	
3	Sec use only
 	
4	Source of funds (SEE INSTRUCTIONS)
None
 	
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)

6	Citizenship or place of organization
  Delaware
 	
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With	: 7
:
:
:	Sole voting power
 
None   (Item 5)	
	: 8
:
:
:	Shared voting power
 
None	
	: 9
:
:
:	Sole dispositive power
 
None   (Item 5)	
	:10
:
:
:	Shared dispositive power
 
None	
11

 	Aggregate amount beneficially owned by each reporting person
 
None   (Item 5)	
 
12

 	Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X	
13

 	Percent of class represented by amount in row (11)
 
0.00%	
14

 	Type of reporting person (SEE INSTRUCTIONS)
    HC, CO	
 
5

CUSIP No. 942749102
1	Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
 
       GAMCO Investors, Inc. 
 
                            I.D. No.  13-4007862	
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) 
 
 (a)

(b)
 	
3	Sec use only
 	
4	Source of funds (SEE INSTRUCTIONS)
None
 	
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)

6	Citizenship or place of organization
   Delware
 	
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With	: 7
:
:
:	Sole voting power
 
None	
	: 8
:
:
:	Shared voting power
 
None	
	: 9
:
:
:	Sole dispositive power
 
None	
	:10
:
:
:	Shared dispositive power
 
None	
11

 	Aggregate amount beneficially owned by each reporting person
 
None	
 
12

 	Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X	
13

 	Percent of class represented by amount in row (11)
 
0.00%
 	
14
 
 	Type of reporting person (SEE INSTRUCTIONS)
    HC, CO	

6

CUSIP No. 942749102
1	Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
 
       Mario J. Gabelli	
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) 
 
 (a)

(b)
 	
3	Sec use only
 	
4	Source of funds (SEE INSTRUCTIONS)
 None
 	
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)

6	Citizenship or place of organization
   USA
 	
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With	: 7
:
:
:	Sole voting power
 
None	
	: 8
:
:
:	Shared voting power
 
None	
	: 9
:
:
:	Sole dispositive power
 
None	
	:10
:
:
:	Shared dispositive power
 
None	
11

 	Aggregate amount beneficially owned by each reporting person
 
None	
 
12

 	Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X	
13

 	Percent of class represented by amount in row (11)
 
0.00%	
14

 	Type of reporting person (SEE INSTRUCTIONS)
    IN	

7

Item 1. 
 
Security and Issuer
This Amendment No. 48 to Schedule 13D on the Class A Common Stock of Watts Water Technologies, Inc., formerly known as Watts Industries, Inc., (the "Issuer") is being filed on behalf of the undersigned to amend the Schedule 13D, as amended (the "Schedule 13D") which was originally filed on April 22, 1999.  Unless otherwise indicated, all capitalized terms used herein but not defined herein shall have the same meanings as set forth in the Schedule 13D.

Item 2. 
 
Identity and Background
Item 2 to Schedule 13D is amended, in pertinent part, as follows:
This statement is being filed by Mario J. Gabelli ("Mario Gabelli") and various entities which he
directly or indirectly controls or for which he acts as chief investment officer.  These entities, except for LICT Corporation ("LICT), CIBL, Inc. ("CIBL") and ICTC Group, Inc. ("ICTC"), engage in various aspects of the securities business, primarily as investment adviser to various institutional and individual clients, including registered investment companies and pension plans, and as general partner or the equivalent of various private investment partnerships or private funds.  Certain of these entities may also make investments for their own accounts.
The foregoing persons in the aggregate often own beneficially more than 5% of a class of equity securities of a particular issuer.  Although several of the foregoing persons are treated as institutional investors for purposes of reporting their beneficial ownership on the short-form Schedule 13G, the holdings of those who do not qualify as institutional investors may exceed the 1% threshold presented for filing on Schedule 13G or implementation of their investment philosophy may from time to time require action which could be viewed as not completely passive.  In order to avoid any question as to whether their beneficial ownership is being reported on the proper form and in order to provide greater investment flexibility and administrative uniformity, these persons have decided to file their beneficial ownership reports on the more detailed Schedule 13D form rather than on the short-form Schedule 13G and thereby to provide more expansive disclosure than may be necessary.
(a), (b) and (c) - This statement is being filed by one or more of the following persons: GGCP, Inc.  ("GGCP"), GGCP Holdings LLC ("GGCP Holdings"), GAMCO Investors, Inc. ("GBL"), Associated Capital Group, Inc. ("AC"), Gabelli Funds, LLC ("Gabelli Funds"), GAMCO Asset Management Inc. ("GAMCO"), Teton Advisors, Inc. ("Teton Advisors"), Gabelli Securities, Inc. ("GSI"), G.research, LLC ("G.research"), MJG Associates, Inc. ("MJG Associates"), Gabelli Foundation, Inc. ("Foundation"), MJG-IV Limited Partnership ("MJG-IV"),  Mario Gabelli, LICT, CIBL and ICTC.  Those of the foregoing persons signing this Schedule 13D are hereinafter referred to as the "Reporting Persons".
GGCP makes investments for its own account and is the manager and a member of GGCP Holdings which is the controlling shareholder of GBL and AC.  GBL, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those named below.  AC, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those listed below.
GAMCO, a wholly-owned subsidiary of GBL, is an investment adviser registered under the Investment Advisers Act of 1940, as amended ("Advisers Act").  GAMCO is an investment manager providing discretionary managed account services for employee benefit plans, private investors, endowments, foundations and others.
GSI, a majority-owned subsidiary of AC, is an investment adviser registered under the Advisers Act and serves as a general partner or investment manager to limited partnerships and offshore investment companies and other accounts.  As a part of its business, GSI may purchase or sell securities for its own account.  GSI is a general partner or investment manager of a number of funds or partnerships, including Gabelli Associates Fund, L.P., Gabelli Associates Fund II, L.P., Gabelli Associates Limited, Gabelli Associates Limited II E, ALCE Partners, L.P., Gabelli Capital Structure Arbitrage Fund LP, Gabelli Capital Structure Arbitrage Fund Limited, Gabelli Intermediate Credit Fund L.P., Gabelli Japanese Value Partners L.P., GAMA Select Energy + L.P., GAMCO Medical Opportunities L.P., GAMCO Long/Short Equity Fund, L.P., Gabelli Multimedia Partners, L.P, Gabelli International Gold Fund Limited and Gabelli Green Long/Short Fund, L.P.
G.research, a wholly-owned subsidiary of GSI, is a broker-dealer registered under the Securities Exchange Act of 1934, as amended ("1934 Act"), which as a part of its business regularly purchases and sells securities for its own account.
Gabelli Funds, a wholly owned subsidiary of GBL, is a limited liability company. Gabelli Funds is an investment adviser registered under the Advisers Act which provides advisory services for The Gabelli Equity Trust Inc., The Gabelli Asset Fund, The GAMCO Growth Fund, The Gabelli Convertible and Income Securities Fund Inc., The Gabelli Value 25 Fund Inc., The Gabelli Small Cap Growth Fund, The Gabelli Equity Income Fund, The Gabelli ABC Fund, The GAMCO Global Telecommunications Fund, The Gabelli Gold Fund, Inc., The Gabelli Multimedia Trust Inc., The Gabelli Global Rising Income & Dividend Fund, The Gabelli Capital Asset Fund, The GAMCO International Growth Fund, Inc., The GAMCO Global Growth Fund, The Gabelli Utility Trust, The GAMCO Global Opportunity Fund, The Gabelli Utilities Fund, The Gabelli Dividend Growth Fund, The GAMCO Mathers Fund, The Gabelli Focus Five Fund, The Comstock Capital Value Fund, The Gabelli Dividend and Income Trust, The Gabelli Global Utility & Income Trust, The GAMCO Global Gold, Natural Resources, & Income Trust, The GAMCO Natural Resources Gold & Income Trust, The GDL Fund, Gabelli Enterprise Mergers & Acquisitions Fund, The Gabelli SRI Fund, Inc., The Gabelli Healthcare & Wellness Rx Trust, The Gabelli Global Small and Mid Cap Value Trust, Gabelli Value Plus+ Trust, Bancroft Fund Ltd. and Ellsworth Growth & Income Fund Ltd. (collectively, the "Funds"), which are registered investment companies.  Gabelli Funds is also the investment adviser to The GAMCO International SICAV (sub-funds GAMCO Merger Arbitrage and GAMCO All Cap Value), a UCITS III vehicle.
Teton Advisors, an investment adviser registered under the Advisers Act, provides discretionary advisory services to The TETON Westwood Mighty Mites sm Fund, The TETON Westwood Income Fund, The TETON Westwood SmallCap Equity Fund, and The TETON Westwood Mid-Cap Equity Fund.
MJG Associates provides advisory services to private investment partnerships and offshore funds.  Mario Gabelli is the sole shareholder, director and employee of MJG Associates.   MJG Associates is the Investment Manager of Gabelli International Limited and Gabelli Fund, LDC.  Mario J. Gabelli is the general partner of Gabelli Performance Partnership, LP.
The Foundation is a private foundation.  Mario Gabelli is the Chairman, a Trustee and the Investment Manager of the Foundation. Elisa M. Wilson is the President of the Foundation.
LICT is a holding company with operating subsidiaries engaged primarily in the rural telephone industry. LICT actively pursues new business ventures and acquisitions. LICT makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of LICT.
ICTC is a holding company with subsidiaries in voice, broadband and other telecommunications services, primarily in the rural telephone industry. ICTC makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of ICTC.
CIBL is a holding company with interests in telecommunications operations, primarily in the rural telephone industry. CIBL actively pursues new business ventures and acquisitions. CIBL makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of CIBL.
Mario Gabelli is the controlling stockholder, Chief Executive Officer and a director of GGCP and Chairman and Chief Executive Officer of GBL. He is the Executive Chairman and Chief Executive Officer of AC.  Mario Gabelli is also a member of GGCP Holdings. Mario Gabelli is the controlling shareholder of Teton.
                             MJG-IV is a family partnership in which Mario Gabelli is the general partner.  Mario Gabelli has less than a 100% interest in MJG-IV.  MJG-IV makes investments for its own account.  Mario Gabelli disclaims ownership of the securities held by MJG-IV beyond his pecuniary interest.
The Reporting Persons do not admit that they constitute a group.
GAMCO and G.research are New York corporations and GBL, AC, GSI, and Teton Advisors are Delaware corporations, each having its principal business office at One Corporate Center, Rye, New York 10580. GGCP is a Wyoming corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.   GGCP Holdings is a Delaware limited liability corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.  Gabelli Funds is a New York limited liability company having its principal business office at One Corporate Center, Rye, New York 10580.  MJG Associates is a Connecticut corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.  The Foundation is a Nevada corporation having its principal offices at 165 West Liberty Street, Reno, Nevada 89501.  LICT is a Delaware corporation having its principal place of business as 401 Theodore Fremd Avenue, Rye, New York 10580. CIBL, Inc. is a Delaware corporation having its principal place of business as 165 West Liberty Street, Suite 220, Reno, NV 89501.  ICTC Group Inc. is a Delaware corporation having its principal place of business as   556 Main Street, Nome, North Dakota 58062.
For information required by instruction C to Schedule 13D with respect to the executive officers and directors of the foregoing entities and other related persons (collectively, "Covered Persons"), reference is made to Schedule I annexed hereto and incorporated herein by reference.
(d) – Not applicable.
(e) – Not applicable.
 
(f) – Reference is made to Schedule I hereto.

Item 5. 
 
Interest In Securities Of The Issuer
Item 5 to Schedule 13D is amended, in pertinent part, as follows:
(a) The aggregate number of Securities to which this Schedule 13D relates is 2,140,996 shares, representing 7.69% of the 27,855,791 shares outstanding as reported in the Issuer's most recent Form 10-Q for the quarterly period ended April 3, 2016.  The Reporting Persons beneficially own those Securities as follows:
 
Name	Shares of
Common Stock	% of Class of
Common	
Gabelli Funds
 	609,965	2.19%	
GAMCO	1,531,031	5.50%	

                            Mario Gabelli is deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons.  GSI is deemed to have beneficial ownership of the Securities beneficially owned by G.research.  AC, GBL and GGCP are deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons other than Mario Gabelli and the Foundation.
(b) Each of the Reporting Persons and Covered Persons has the sole power to vote or direct the vote and sole power to dispose or to direct the disposition of the Securities reported for it, either for its own benefit or for the benefit of its investment clients or its partners, as the case may be, except that (i) GAMCO does not have the authority to vote 92,900 of the reported shares, (ii) Gabelli Funds has sole dispositive and voting power with respect to the shares of the Issuer held by the Funds so long as the aggregate voting interest of all joint filers does not exceed 25% of their total voting interest in the Issuer and, in that event, the Proxy Voting Committee of each Fund shall respectively vote that Fund's shares, (iii) at any time, the Proxy Voting Committee of each such Fund may take and exercise in its sole discretion the entire voting power with respect to the shares held by such fund under special circumstances such as regulatory considerations, and (iv) the power of Mario Gabelli, AC, GBL, and GGCP is indirect with respect to Securities beneficially owned directly by other Reporting Persons.
(e) Not applicable.

8

Signature
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Dated: 
 
May 17, 2016
GGCP, INC.
MARIO J. GABELLI

By: /s/ Douglas R. Jamieson
     Douglas R. Jamieson
     Attorney-in-Fact

ASSOCIATED CAPITAL GROUP, INC.

By: /s/ Kevin Handwerker 
 
     Kevin Handwerker
                General Counsel &   Secretary – Associated Capital Group, Inc.

GAMCO ASSET MANAGEMENT INC.
  GAMCO INVESTORS, INC.
GABELLI FUNDS, LLC

By: /s/ Douglas R. Jamieson 
 
     Douglas R. Jamieson
                    President & Chief Operating Officer – GAMCO Investors, Inc.
      President – GAMCO Asset Management Inc.
 
      President & Chief Operating Officer of the sole member of
Gabelli Funds, LLC

9

Schedule I
     Information with Respect to Executive
Officers and Directors of the Undersigned
Schedule I to Schedule 13D is amended, in pertinent part, as follows:

The following sets forth as to each of the executive officers and directors of the undersigned: his name; his business address; his present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted.  Unless otherwise specified, the principal employer of each such individual is GAMCO Asset Management Inc., Gabelli Funds, LLC, Gabelli Securities, Inc., G.research, LLC, Teton Advisors, Inc., Associated Capital Group, Inc. or GAMCO Investors, Inc., the business address of each of which is One Corporate Center, Rye, New York 10580, and each such individual identified below is a citizen of the United States.  To the knowledge of the undersigned, during the last five years, no such person has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors), and no such person was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which he was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities law or finding any violation with respect to such laws except as reported in Item 2(d) and (e) of this Schedule 13D.	

10

GAMCO Investors, Inc.
Directors:	 	
 
               Edwin L. Artzt

 
 
Raymond C. Avansino

 
 	 
Former Chairman and Chief Executive Officer
Procter & Gamble Company
900 Adams Crossing
Cincinnati, OH 45202
 
Chairman & Chief Executive Officer
E.L. Wiegand Foundation
165 West Liberty Street
Reno, NV 89501
 	
Mario J. Gabelli

 

 
              Elisa M. Wilson	Chief Executive Officer and Chief Investment Officer of GGCP, Inc.
Chairman & Chief Executive Officer of GAMCO Investors, Inc.
Executive Chairman & Chief Executive Officer of Associated Capital Group, Inc.
Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
 
Director
c/o GAMCO Investors, Inc.
One Corporate Center
Rye, NY 10580	
 	 	
               Eugene R. McGrath
 	Former Chairman and Chief Executive Officer
Consolidated Edison, Inc.
4 Irving Place
New York, NY 10003
 	
               Robert S. Prather
 
 	President & Chief Executive Officer
Heartland Media, LLC
1843 West Wesley Road
Atlanta, GA 30327
 	
Officers:	 	
Mario J. Gabelli
 	Chairman and Chief Executive Officer
 	
Douglas R. Jamieson
 
Henry G. Van der Eb
 
Bruce N. Alpert
 
Agnes Mullady
 
Kevin Handwerker
 	President and Chief Operating Officer
 
Senior Vice President
 
Senior Vice President
 
Senior Vice President
 
Executive Vice President, General Counsel and Secretary	
 	 	
GAMCO Asset Management Inc.
Directors:
 	 	
Douglas R. Jamieson
Regina M. Pitaro
William S. Selby
 	 	
Officers:
 	 	
Mario J. Gabelli	Chief Executive Officer and Chief Investment Officer – Value Portfolios
 	
Douglas R. Jamieson
 
               David Goldman
 	President, Chief Operating Officer and Managing Director
 
General Counsel, Secretary & Chief Compliance Officer
 	
Gabelli Funds, LLC
Officers:
 	 	
Mario J. Gabelli
 	Chief Investment Officer – Value Portfolios	
Bruce N. Alpert	Executive Vice President and Chief Operating Officer
 	
               Agnes Mullady	President and Chief Operating Officer – Open End Fund Division	
 
               David Goldman	 
General Counsel	
 	 	
Gabelli Securities, Inc.	 	
Directors:	 	
Robert W. Blake	President of W. R. Blake & Sons, Inc.
196-20 Northern Boulevard
Flushing, NY   11358
 	
Douglas G. DeVivo	Co-Chairman of the Board
Alce Partners, L.P.
40 Laburnum Road
Atherton, CA 94027
 	
               Marc Gabelli
 	Co-Chairman of the Board
See above
 	
 Douglas R. Jamieson
 	President

               William C. Mattison, Jr.	 
Former Vice Chairman – Gerard, Klauer Mattison & Co., Inc.	
 	 	
               Salvatore F. Sodano	Vice Chairman
Chairman and Chief Executive Officer
Worldwide Capital Advisory Partners, LLC
520 White Plains Road, Suite 500
Tarrytown, NY 10591	

Officers:	 	
Douglas R. Jamieson
 
Patrick Dennis
 
Kevin Handwerker
 
David M. Goldman
 
David Fitzgerald	See above
 
Executive Vice President, Chief Financial Officer
 
Secretary
 
General Counsel & Assistant Secretary
 
Chief Compliance Officer	
 
G.research, LLC

Officers:	 	
               Cornelius V. McGinity
 	See above	
Bruce N. Alpert
 
               Douglas R. Jamieson
 
               David M. Goldman
 
               Josephine D. LaFauci	Vice President
 
Secretary
 
Assistant Secretary
 
Chief Compliance Officer	
 
Gabelli Foundation, Inc.
Officers:	 	
                Mario J. Gabelli	Chairman, Trustee & Chief Investment Officer
 	
                Elisa M. Wilson
 
                Marc Gabelli
 
                Matthew R. Gabelli
 
                Michael Gabelli	President
 
Trustee
 
Trustee
 
Trustee	
 
MJG-IV Limited Partnership
Officers:	 	
                 Mario J. Gabelli	General Partner	

11

 
GGCP, Inc.
Directors:	 	
               Mario J. Gabelli
 	Chief Executive Officer and Chief Investment Officer of GGCP, Inc.
Chairman & Chief Executive Officer of GAMCO Investors, Inc.
Executive Chairman & Chief Executive Officer of Associated Capital Group, Inc.
Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
 	
Marc Gabelli
 	President of Associated Capital Group, Inc.
President and Managing Director of Gabelli Securities, Inc.
 	
Matthew R. Gabelli
 	Vice President – Trading
G.research, Inc.
One Corporate Center
Rye,  NY 10580
 	
              Michael Gabelli
 
 	President & COO
Gabelli & Partners, LLC
One Corporate Center
Rye, NY 10580

              Frederic V. Salerno	 
Chairman
Former Vice Chairman and Chief Financial Officer
Verizon Communications

               Vincent S. Tese	 
Executive Chairman – FCB Financial Corp	
 	 	
Officers:	 	
Mario J. Gabelli	Chief Executive Officer and Chief Investment Officer	
              Marc Gabelli	President	
               Silvio A. Berni
 	Vice President, Assistant Secretary and Controller	
 	 	
GGCP Holdings LLC
Members:
 
              GGCP, Inc.
 
              Mario J. Gabelli	 

Manager and Member
 
Member	

12

 
Teton Advisors, Inc.
Directors:	 	
Howard F. Ward
 
               Nicholas F. Galluccio
 
               Vincent J. Amabile
 
               John Tesoro
 	Chairman of the Board
 
Chief Executive Officer and President

Officers:	 	
Howard F. Ward
 
               Nicholas F. Galluccio
 
               Michael J. Mancuso
 
               David Goldman
 
               Tiffany Hayden
 	See above
 
See above
 
Chief Financial Officer
 
General Counsel
 
Secretary	

13

 

Associated Capital Group, Inc.
Directors:	 	
Mario J. Gabelli
 	Chief Executive Officer and Chief Investment Officer of GGCP, Inc.
Chairman & Chief Executive Officer of GAMCO Investors, Inc.
Executive Chairman & Chief Executive Officer of Associated Capital Group, Inc.
Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
 	
Marc Gabelli
 	Chairman of The LGL Group, Inc.
2525 Shader Road
Orlando, FL 32804
 	
Richard L. Bready
 	Former Chairman and Chief Executive Officer
Nortek, Inc.
50 Kennedy Plaza
Providence, RI 02903
 	
              Bruce Lisman
 
 	Former Chairman - JP Morgan – Global Equity Division	
Daniel R. Lee

 	Chief Executive Officer
Full House Resorts, Inc.
4670 South Ford Apache Road, Suite 190
Las Vegas, NV 89147	
 
              Salvatore F. Sodano	 
Vice Chairman of the Board (see above)
 	
Officers:	 	
Mario J. Gabelli
 
               Marc Gabelli
 
               Patrick Dennis
 
               Kevin Handwerker
 	Chairman of the Board and Chief Executive Officer
 
President
 
Executive Vice President and Chief Financial Officer
 
Executive Vice President, General Counsel and Secretary

14

                                SCHEDULE II
                            INFORMATION WITH RESPECT TO
                 TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR
                 SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)
                                   SHARES PURCHASED        AVERAGE
                        DATE            SOLD(-)             PRICE(2)

 COMMON STOCK-WATTS WATER TECH NOLOGIES, INC .

           GAMCO ASSET MANAGEMENT INC.
                       5/16/16              500-           55.7832
                       5/12/16              600-           56.7500
                       5/12/16              500-           56.0000
                       5/11/16              500            56.4420
                       5/11/16              400-           56.3825
                       5/11/16               75-             *DO
                       5/10/16            2,000-           56.3970
                       5/09/16              150-           55.9000
                       5/06/16              250-           55.4460
                       5/04/16              800-           56.0000
                       5/03/16              300            56.0113
                       5/02/16              550-           56.7309
                       5/02/16            1,000-           56.7220
                       5/02/16              800-           56.7189
                       5/02/16            3,881-           56.6000
                       4/29/16              500-           55.3881
                       4/29/16               70-           55.3301
                       4/28/16            1,819-           56.5615
                       4/25/16              500            56.1956
                       4/20/16              500-             *DO
                       4/18/16              800-           55.7000
                       4/13/16              500-           55.5000
                       4/12/16               50-           54.2100
                       4/12/16              200-             *DO
                       4/11/16              700-           54.4500
                       4/11/16              200-           54.4200
                       4/08/16              500-           54.9520
                       4/08/16              200-           54.2000
                       4/08/16            1,800-           54.1630
                       4/08/16              500-           54.1500
                       4/07/16              100-           54.2590
                       4/07/16              500-           53.9399
                       4/06/16              500-           54.4000
                       4/05/16              300-           54.4867
                       4/01/16              300-           55.2200
                       4/01/16              200-           54.7000
                       3/31/16            1,000-             *DO
                       3/31/16            1,000-           55.0000
                       3/29/16              800-           55.4248
                       3/28/16              800-           54.2641
                       3/28/16            1,000-           54.2202
                       3/28/16              375-           54.1813
                       3/22/16              400-           55.2624
                       3/22/16            1,000-           54.9000
                       3/21/16            8,500-           55.2665

(1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED
    ON THE NY SE .

(2) PRICE EXCLUDES COMMISSION.

(*) RESULTS IN CHANGE OF DISPOSITIVE POWER AND BENEFICIAL OWNERSHIP.

15