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Street segments with recurring confirmed sewer backups in the last 12 months (% of total segments)
Maintain the City’s water delivery and sewer collection systems. — Resolve emergencies and perform preventive maintenance and required repairs to the water distribution and wastewater collection systems in a timely manner.
Like DEP's sewer backup resolution time, this indicator spiked in FY22 because of the record rainfall from Hurricanes Henri and Ida, which pushed far more street segments into repeat sewer-backup territory that year. DEP's reporting shows the rate returning to its normal, low range once that unusually severe rain event was behind them.
Researched July 16, 2026 — DEP, Fiscal 2023 Mayor's Management Report
* Year to date — this fiscal year isn't complete, so it's not compared against prior years in the target/trend status above.
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| Fiscal year | Actual | Target |
|---|---|---|
| FY22 | 0.5% | 0.6% |
| FY23 | 0.2% | 0.6% |
| FY24 | 0.3% | 0.6% |
| FY25 | 0.2% | 0.6% |
| FY26 (YTD) | 0.2% | 0.6% |
Source: Bureau of Water and Sewer Operations — via NYC Open Data: Mayor's Management Report, Agency Performance Indicators
Coverage shown: FY22–FY26, reported monthly.
Definition: The number of street segments in the City that had more than one confirmed sewer backup complaint during the last 12 months as a percent of the overall number of street segments in the City. A segment is the distance from one intersecting street to the next.