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New York / Waters /

Hutchinson River

River in New York, past Bronx, Eastchester, Mount Vernon, New Rochelle, Pelham and Scarsdale

Current status

Discharge or advisory reported

A discharge is reported as ongoing, a post-discharge period applies, or an official advisory is listed. Open the report for its source, dates and advice. This status since . Why this status, and its source

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Small hollow diamonds mark places named in overflow reports (provisional).

Conditions

At the Hutchinson River at Pelham NY gauge, on this water: no reading in the last 12 hours.

Conditions are measured at the gauge, not at this spot, and do not change the status.

Source: U.S. Geological Survey via Water Data for the Nation, gauge 01301500, no reading in the last 12 hours, retrieved 2026-11-06 08:53 UTC. Gauge chosen by DirtyWaterWatch. · Readings and history at USGS

Get alerts from New York City Department of Environmental Protection (12 WRRF CSO permits) · Bookmark this water page and check it before each trip · Report a missing notice or error

About this status

Discharge or advisory reported: official advisory listed; shown while the authority keeps it in place

Source: NYC DEP Waterbody Advisory System via NYC DEP Waterbody Advisory System (dashboard JSON API), record WQ-35-202611…, updated by the source Nov 6, 2026, 2:00 AM EST, retrieved 2026-11-06 08:47 UTC · Original notice · Updated

Reports behind this status

Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system.

Reports behind the status of Hutchinson River, newest first
WhenReportStatus
to Nov 7, 2:00 AMNew York City Department of Environmental… · CSO · dated after this update, as given by the source · volume not reported report · notice · mapto Nov 7, 2:00 AM

Sources: NYC DEP Waterbody Advisory System (dashboard JSON API), retrieved 2026-11-06 08:47 UTC. A report's record id and times show when you hover or focus its "report" link.

Advice in the reports

NYC DEP Waterbody Advisory System · Nov 6, 2026 · Current status: sets this water's status now

“On Advisory until 11/7/2026 2:00:00 AM”

The last 90 days

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Plum: algal bloom advisory. Red or amber with a light line inside: beach advisory or caution. Dotted: monthly report (days with discharge, dates not given). Grey: no current status on the water outline. Purple hatching: a status resting on a source that could not be checked on schedule.

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-06 09:03 UTC.

Reported discharges over time

  • Discharges affecting the Hutchinson River in New York, last 12 months6767 affecting this stretch: 67 reported on the Hutchinson River; none arriving from upstreamDecember 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once. Arriving discharges are estimated from modeled downstream reaches.
  • Days with a discharge affecting the Hutchinson River in New York, last 12 months69Reported on the Hutchinson River in New York: 69 · Arriving from outfalls upstream, estimated: 0 (counted apart; together they need not equal the total)December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status on the Hutchinson River in New York, last 12 months4,863Reported on the Hutchinson River in New York: 4,863 · Arriving from outfalls upstream, estimated: 0December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
  • 2026 season with a discharge or advisory status on the Hutchinson River in New York64%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.
  • Records behind the last-90-days strip for the Hutchinson River in New York19Reported on the Hutchinson River in New York: 19 · Arriving from outfalls upstream, estimated: 0last 90 daysEvery distinct record the strip lists for its red, yellow and unresolved hours, notices and unresolved reports included; counted as the strip counts them.

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater. Outfall: a pipe or outlet where wastewater enters a water body.

Reported discharges per month

75 reported discharges, January 2022 to November 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover January 1, 2022 to November 6, 2026.

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Hours with a discharge or advisory status per month

Hours when this water had a discharge or advisory status under DirtyWaterWatch rules.

  • Discharge or advisory reported

1 discharge report has no end time and is not marked ongoing; under DirtyWaterWatch rules it shows caution, not a discharge or advisory status, and adds no hours here.

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover August 11, 2021 to November 6, 2026.

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Days with a reported discharge per month

A day counts when any counted discharge was under way on it, from its start to its reported end in Eastern Time; a report with no end counts its start day.

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover January 1, 2022 to November 6, 2026.

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Reported discharges per year, 2021 to 2026

75 reported discharges, 2021 to 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other
  • Incomplete source coverage
Limited records

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover August 11, 2021 to November 6, 2026.

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Reported volume per year

Gallons (axis: K thousand, M million), summed from the 1 report that gave a volume as a number (74 did not).

  • Incomplete source coverage
Limited records

74 of 75 discharge reports gave no volume as a number; only numbers are summed.

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover August 11, 2021 to November 6, 2026.

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Hours with a discharge or advisory status per year

Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.

  • Discharge or advisory reported
  • Incomplete source coverage
Limited records

1 discharge report has no end time and is not marked ongoing; under DirtyWaterWatch rules it shows caution, not a discharge or advisory status, and adds no hours here.

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover August 11, 2021 to November 6, 2026.

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Share of the May to October season with a discharge or advisory status

Share of the hours from May 1 to October 31 with a discharge or advisory status under DirtyWaterWatch rules.

  • Discharge or advisory reported
  • Season with incomplete source coverage

Seasons with incomplete source coverage: 2021. The share is of the hours a source covered. 1 discharge report has no end time and is not marked ongoing; under DirtyWaterWatch rules it shows caution, not a discharge or advisory status, and adds no hours here.

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover August 11, 2021 to November 6, 2026.

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Reported discharges by calendar month, all years

Every counted discharge report, by the calendar month it began.

Months are summed over every year a tracked source covers; the table gives the number of years behind each month.

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover August 11, 2021 to November 6, 2026.

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Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 9 of 9, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Sources: ny-dec-sprtk; nyc-dep-advisories. Records cover August 11, 2021 to November 6, 2026.

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How these charts are counted

We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.

  • U.S. Environmental Protection Agency sewer overflow records: records from May 3, 2022 to the latest update (limited records)
  • ny-dec-sprtk: records from August 11, 2021 to the latest update
  • ny-dec-sprtk-web: records from May 30, 2025 to the latest update
  • nyc-dep-advisories: records from November 6, 2026 to the latest update

Reports linked to Hutchinson River

Reports linked to Hutchinson River, newest first
WhenReportStatus
to Nov 7, 2:00 AMNew York City Department of Environmental… · CSO · dated after this update, as given by the source · volume not reported report · notice · mapto Nov 7, 2:00 AM
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · 0 gallons report · notice · mapongoing
NYCDEP City Wide CSO · Please see DEP's website below · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · Please see DEP's website below · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
to Aug 13, 11:40 AMNYCDEP Hunts Point WWTP · Conner Street Pump Station · SSO · volume in each report mapended
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · Please see DEP’s website below · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · Please See Dep's Website Below · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing
NYCDEP City Wide CSO · CSO · “0 Gallons per Minute Estimated” report · notice · mapongoing

Sources: DEC SPRTK workbook 'SPRTK_Data.xlsx' and older 'Sewage_Discharge_Reports.xlsx' (2013-2020), retrieved 2026-11-06 03:14 UTC.

Download these reports as CSV

Showing the latest 25 records of 79 records.See them all with filters.

All reports in New York by year: 2026 (71 here) · 2025 (8 here)

Wastewater outlets on this water

Places named in overflow reports (provisional)

1 place

Provisional location from overflow reports. Where the operator's own reports put an overflow: a manhole, pump station or plant. Not an outfall listed in a permit.

Source: the operator's own overflow reports to the state. DirtyWaterWatch groups reports within 50 metres into one place and finds the water below it with U.S. Geological Survey river maps (NLDI, NHDPlus). Not a permitted outfall; provisional until an official outfall record exists.

Sewer operators listed for this water: New York City Department of Environmental Protection (12 WRRF CSO permits).

Boat launches

No public boat launch is listed in our records for this water.

Nearby waters

Sources covering this water

75 records linked to this water, besides 4 earlier versions or duplicates. Updated .