Rome Smart Water Network (Acea Ato 2)
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
10 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.
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✎ Corrected 27 Aug 2026 Publication date recorded for 3 sources. What changed →
759 metering districts across a 13,000km network, and the share of water lost in Rome moved from 27.9% to 27.8% in a year. Counted as volume instead of share, the same programme looks like a fifth less lost since 2019.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 9 more in Rome · 💧 Water guide · 🌱 Environment projects
Acea Ato 2 runs the water service for Rome and 112 other municipalities in Lazio Centrale, the largest such territory in Italy, serving about four million people over more than 5,000 square kilometres. It has cut the network into district metered areas — 759 measurement districts over more than 13,000km of georeferenced network — with surveys, flow and pressure measurement, water balancing, mathematical modelling and active leak searching on top, so that losses can be traced to the part of the network they come from. A second programme is swapping household meters for electronic ones that send consumption data to the utility by themselves; the swap is free to the customer.
📊 Impact
Total leaks on the Rome network eased to 27.8% in 2023, from 27.9% in 2022. Counted as volume rather than share, the same year's measures cut the water lost by 2% against 2022 and by about 19% against 2019. Across the whole territory the utility serves, total leaks were still around 38.4%, down from 38.9% in 2022.
🎓 Lesson
Two ways of counting the same programme, both out of the same report, and they do not read alike: the share of water lost on the Rome network moved by a tenth of a percentage point in a year, while the volume lost fell by about a fifth against 2019. Both can be true, because a share is a ratio — when less water is put into the network, the proportion lost can stand still while the cubic metres saved add up. Neither figure has been checked from outside; the utility publishes them itself, in its own sustainability report. And the household half of this is not a smart-city decision at all: changing the meter is a legal obligation under a ministerial decree of 21 April 2017 covering every non-MID meter installed before 2007. What the utility added on top of that obligation is the radio module — the meter reports consumption to Acea Ato 2 on its own, which is what turns a legally required swap into bills based on real use and leaks that show up early.
Sources
Show your work What this page rests on and what it can’t tell you · all 10 claims with their sources · the forensic record
Evidence Passport · public beta 10 addressable claims, 3 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.
Inspect the claims, one by one — verbatim text, sources and caveats for all 10
The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-cef2ce7fbb8e2a5c
quantitative
Acea Ato 2 runs the water service for Rome and 112 other municipalities in Lazio Centrale, the largest such territory in Italy, serving about four million people over more than 5,000 square kilometres
Sources carrying this claim
clm-7d65329b98f06587
quantitative
759 measurement districts over more than 13,000km of georeferenced network
Sources carrying this claim
clm-ab9ae4e538f65ebb
descriptive
with surveys, flow and pressure measurement, water balancing, mathematical modelling and active leak searching on top
Sources carrying this claim
clm-922171daa1b29812
descriptive
A second programme is swapping household meters for electronic ones that send consumption data to the utility by themselves; the swap is free to the customer
Sources carrying this claim
clm-b897d17184fc66a3
quantitative
Total leaks on the Rome network eased to 27.8% in 2023, from 27.9% in 2022
Sources carrying this claim
clm-a45d67f4a5cba47a
quantitative
Counted as volume rather than share, the same year's measures cut the water lost by 2% against 2022 and by about 19% against 2019
Sources carrying this claim
clm-f842854c5adce16a
quantitative
Across the whole territory the utility serves, total leaks were still around 38.4%, down from 38.9% in 2022
Sources carrying this claim
clm-10db90d8e0156c5d
descriptive
Neither figure has been checked from outside; the utility publishes them itself, in its own sustainability report
Sources carrying this claim
clm-bd8e7b7f373d70dc
quantitative
changing the meter is a legal obligation under a ministerial decree of 21 April 2017 covering every non-MID meter installed before 2007
Sources carrying this claim
clm-414ad9afa57b0aea
quantitative
the meter reports consumption to Acea Ato 2 on its own, which is what turns a legally required swap into bills based on real use and leaks that show up early
Sources carrying this claim
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
sha256:efd12d1009bd198f33e230b936acb9006bad8fc1f64c0f8ee442a75b3d57c15f
- 10
- of 10 claims mapped
- 3
- source dossiers
- 0
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- Acea Ato 2
- Actor types
- utility
- Funding model
- utility
- Funding description
- Not recorded
- Cost
- Not recorded
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
3 source dossiers
Acea 2023 Sustainability Report — water leaks (operator)
- Stable source ID
src-7a802650d1de34b2- Publisher
- Name not classified · reports.gruppoacea.it
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-27
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Operator/authority. 759 measurement districts over 13,000+ km, 529 flow/pressure meters (2023); Rome network leaks 27.8% (2023) vs 27.9% (2022); territory total ~38.4%; ~19% loss reduction vs 2019. The page states no publication date.
Acea Ato 2 — electronic water-meter replacement plan (operator)
- Stable source ID
src-1c95030859e1b004- Publisher
- Name not classified · aceaato2.a-acqua.it
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-27
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
The meter replacement plan: modern digital meters, free of charge to the customer; smart meters that transmit consumption data directly to Acea Ato 2, giving bills based on real use and early detection of leaks; the replacement is a legal obligation under ministerial decree no. 93 of 21 April 2017 for all non-MID meters installed before 2007.
Acea Ato 2 — who we are (operator)
- Stable source ID
src-6c1bc6a00323f9c4- Publisher
- Name not classified · aceaato2.a-acqua.it
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-27
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Acea Ato 2 as operator of the integrated water service in ATO 2 Lazio Centrale-Roma, the largest in Italy: about four million people served over more than 5,000 square kilometres, the capital and 112 municipalities of Lazio.
- Claims linked
Known limits of this passport
- Publisher names and source languages have not yet been classified; domains are recorded without guessing.
- Existing source notes are descriptive locators, not page- or paragraph-exact citations.
- A missing archive, publication date or content hash is shown as null rather than inferred.
- The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.
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📎 Cite this project
1001 Smart Cities (2026). “Rome Smart Water Network (Acea Ato 2)” — Rome, Italy. The Smart City Atlas. https://1001smartcities.org/projects/rome-acea-smart-water/ (last verified 2026-08-27). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.