Bonus water discount and Supplementary water bonus discount

Supplementary water bonus discount

This water supply bonus is offered by Ato 2 Lazio Centrale Roma to resident domestic users who find themselves in financial difficulty, pursuant to art. 8 of ARERA Deliberation 897/2017/R/IDR. The bonus is regulated by Ato 2 Lazio Centrale Roma, who sets the entitlement rules and processes.

Who is entitled to the Supplementary Water Bonus?

The bonus is intended for direct customers (with a residential domestic utility contract in their own name) and indirect customers (using a water supply registered to a Condominium) who find themselves in financial difficulty.
Specifically, customers entitled to the water bonus include direct and indirect users who meet the following requirements:

    ISEE indicator up to €13,939.11 and family of up to 3 members

    ISEE indicator up to € 15,989.46 and family of 4 members

    ISEE indicator up to € 18,120.63 and family of 5 or more members

Additionally, Municipal Administrations have the power, based on special certificates issued by the competent offices, to offer the Supplementary Water Bonus to individual customers who find themselves in a situation of proven financial and/or social difficulty, by extending the ISEE entitlement criteria on an ad hoc basis. During the 2020-2023 regulatory period, this power extends to the social and financial difficulties caused by the Covid emergency (as specified in deliberation No. 6 of 27 November 2020).
Exceptionally, and until 31/12/2021, direct and indirect users who at the time of the request are entitled to the supplementary water bonus and have an ISEE within the limits set by ARERA, in addition to the normal bonus amount, are entitled to an additional one-time amount up to three time the normal bonus amount, and only to cover previous outstanding bills.

How do I apply for the bonus?

Applications for the supplementary water bonus can be submitted:

1. directly online on the dedicated page of the website of ATO2 Technical-Operational Office (STO) where full regulations are also available. You will be required to attach the following documents in pdf format:

    - 2021 ISEE certificate

    - the first page of a 2021 Acea ATO2 bill (users residing in the Municipalities that will change water provider during 2021 can include the first page of a bill issued in 2021 by the previous provider). Indirect users (users of a water supply registered to a condominium) must include a bill addressed to the Condominium.

2. using the paper form duly filled in and sent by regular mail to: STO ATO 2 Lazio Centrale Roma, Via Cesare Pascarella 31, 00153 Roma. In this case, in addition to the ISEE certification and the first page of the bill, you will also need to provide a copy of the applicant’s ID.

Information about the 2021 supplementary water bonus can be requested by sending an email to

Bonus water discount

This is a bonus provided and governed by ARERA (Authority for the Regulation of Energy, Networks and Environment) through deliberation 227/2018/R/idr.

From 1 January 2021, individuals/families in financial difficulty, therefore entitled to social bonuses, will automatically receive the bonuses without having to apply for them. Anyone entitled will no longer be required to apply at their Municipal authority or tax assistance center (CAF).

Starting in 2021, the only thing individuals/families will have to do every year is submit their Single Self-Declaration (DSU) to obtain the ISEE certificate required to have access to welfare benefits.

All details can be found on the water bonus page on the ARERA website.