Exhibit 99.1

Joint Filer Information

Name of Joint Filer:		GPE VIII GP S.à r.l.
Address of Joint Filer:		c/o Advent International Corporation 800 Boylston Street Boston, MA 02199
Relationship of Joint Filer to Issuer:		10% Owner
Issuer Name and Ticker or Trading Symbol:		AquaVenture Holdings Limited [WAAS]
Date of Event Requiring Statement:		December 23, 2019
Designated Filer:		Advent International Corporation
GPE VIII GP S.À R.L.
By: ADVENT INTERNATIONAL GPE VIII, LLC, MANAGER
/s/ Justin Nuccio
Justin Nuccio, Manager
By: ADVENT INTERNATIONAL CORPORATION, MANAGER
/s/ James Westra
Name:	James Westra
Title:	General Counsel and Managing Partner
Date:	January 2, 2020

Joint Filer Information

Name of Joint Filer:		Advent Partners GPE VIII-A Cayman Limited Partnership
Address of Joint Filer:		c/o Advent International Corporation 800 Boylston Street Boston, MA 02199
Relationship of Joint Filer to Issuer:		10% Owner
Issuer Name and Ticker or Trading Symbol:		AquaVenture Holdings Limited [WAAS]
Date of Event Requiring Statement:		December 23, 2019
Designated Filer:		Advent International Corporation
ADVENT PARTNERS GPE VIII-A CAYMAN LIMITED PARTNERSHIP
By: AP GPE VIII GP LIMITED PARTNERSHIP, GENERAL PARTNER
By: ADVENT INTERNATIONAL GPE VIII, LLC, GENERAL PARTNER
By: ADVENT INTERNATIONAL CORPORATION, MANAGER
/s/ James Westra
Name:	James Westra
Title:	General Counsel and Managing Partner
Date:	January 2, 2020

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Joint Filer Information

Name of Joint Filer:		Advent International GPE VIII, LLC
Address of Joint Filer:		c/o Advent International Corporation 800 Boylston Street Boston, MA 02199
Relationship of Joint Filer to Issuer:		10% Owner
Issuer Name and Ticker or Trading Symbol:		AquaVenture Holdings Limited [WAAS]
Date of Event Requiring Statement:		December 23, 2019
Designated Filer:		Advent International Corporation
ADVENT INTERNATIONAL GPE VIII, LLC
By: ADVENT INTERNATIONAL CORPORATION, MANAGER
/s/ James Westra
Name:	James Westra
Title:	General Counsel and Managing Partner
Date:	January 2, 2020

3