DirtyWaterWatch Public waters. Public record.

Rhode Island / Waters /

Mount Hope Bay

Bay in Rhode Island · near Bristol, Portsmouth, Tiverton, Warren

Current status

No current status shown

No current status is assigned to this water outline. Check the water page for reports and any estimated downstream stretches.

Why this status: No current status: no report we track sets a status on this water outline now.

How long each status lasts, and why

Sources checked: ECHO NPDES Sewer Overflow and Bypass Event Dataset (last successful check 2026-11-02 17:10 UTC). Status by DirtyWaterWatch, updated 2026-11-02 17:13 UTC.

No status does not mean the water is safe. Follow posted signs and local health advice.

Updated Nov 2, 2026, 12:13 PM EST.

Bookmark this water page and check it before each trip · Report a missing notice or error

Map

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.

The last 90 days

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Grey: no current status on the water outline. Purple hatching: source update overdue.

No discharge, advisory or caution periods are shown on this water outline in this time span. Check downstream stretches and source coverage.

Source: DirtyWaterWatch calculations using the reports linked above and the published status rules. Updated 2026-11-02 17:13 UTC.

Reported discharges over time

  • Reported discharges, last 12 months1December 2025 to November 2026; incomplete source coverage
  • Days with a reported discharge, last 12 months1December 2025 to November 2026; incomplete source coverage
  • Hours with a discharge or advisory status, last 12 months51December 2025 to November 2026; incomplete source coverage

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

Reported discharges per month

1 reported discharge, January 2022 to November 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other
  • No tracked source for this period
  • Incomplete source coverage
Limited recordsLimited records

No tracked source covers January 2022 to April 2022. The U.S. Environmental Protection Agency's sewer overflow records are limited: they hold only what operators file with the agency.

Source: U.S. Environmental Protection Agency sewer overflow records. Records cover May 3, 2022 to November 2, 2026.

Show table
Reported discharges per month
MonthCombined sewer overflowSanitary sewer overflowTreatment bypass, blended or otherTotalCounted fromCoverage
January 20220000No tracked source for this period
February 20220000No tracked source for this period
March 20220000No tracked source for this period
April 20220000No tracked source for this period
May 20220000Incomplete source coverage
June 20220000Incomplete source coverage
July 20220000Incomplete source coverage
August 20220000Incomplete source coverage
September 20220000Incomplete source coverage
October 20220000Incomplete source coverage
November 20220000Incomplete source coverage
December 20220000Incomplete source coverage
January 20230000Incomplete source coverage
February 20230000Incomplete source coverage
March 20230000Incomplete source coverage
April 20230000Incomplete source coverage
May 20230000Incomplete source coverage
June 20230000Incomplete source coverage
July 20230000Incomplete source coverage
August 20230000Incomplete source coverage
September 20230000Incomplete source coverage
October 20230000Incomplete source coverage
November 20230000Incomplete source coverage
December 20230000Incomplete source coverage
January 20240000Incomplete source coverage
February 20240000Incomplete source coverage
March 20240000Incomplete source coverage
April 20240000Incomplete source coverage
May 20240000Incomplete source coverage
June 20240000Incomplete source coverage
July 20240000Incomplete source coverage
August 20240000Incomplete source coverage
September 20240000Incomplete source coverage
October 20240000Incomplete source coverage
November 20240000Incomplete source coverage
December 20240000Incomplete source coverage
January 20250000Incomplete source coverage
February 20250000Incomplete source coverage
March 20250000Incomplete source coverage
April 20250000Incomplete source coverage
May 20250000Incomplete source coverage
June 20250000Incomplete source coverage
July 20250000Incomplete source coverage
August 20250000Incomplete source coverage
September 20250000Incomplete source coverage
October 20250000Incomplete source coverage
November 20250000Incomplete source coverage
December 20250000Incomplete source coverage
January 20260000Incomplete source coverage
February 20260000Incomplete source coverage
March 20260000Incomplete source coverage
April 20260000Incomplete source coverage
May 20260101Source recordsIncomplete source coverage
June 20260000Incomplete source coverage
July 20260000Incomplete source coverage
August 20260000Incomplete source coverage
September 20260000Incomplete source coverage
October 20260000Incomplete source coverage
November 20260000Incomplete source coverage

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
  • No tracked source for this period
  • Incomplete source coverage
Limited recordsLimited records

No tracked source covers January 2022 to April 2022. The U.S. Environmental Protection Agency's sewer overflow records are limited: they hold only what operators file with the agency.

Source: U.S. Environmental Protection Agency sewer overflow records. Records cover May 3, 2022 to November 2, 2026.

Show table
Hours with a discharge or advisory status per month
MonthHours with a discharge or advisory statusHours from post-discharge periodsHours in the monthCoverage
January 202200744No tracked source for this period
February 202200672No tracked source for this period
March 202200744No tracked source for this period
April 202200720No tracked source for this period
May 202200744Incomplete source coverage
June 202200720Incomplete source coverage
July 202200744Incomplete source coverage
August 202200744Incomplete source coverage
September 202200720Incomplete source coverage
October 202200744Incomplete source coverage
November 202200720Incomplete source coverage
December 202200744Incomplete source coverage
January 202300744Incomplete source coverage
February 202300672Incomplete source coverage
March 202300744Incomplete source coverage
April 202300720Incomplete source coverage
May 202300744Incomplete source coverage
June 202300720Incomplete source coverage
July 202300744Incomplete source coverage
August 202300744Incomplete source coverage
September 202300720Incomplete source coverage
October 202300744Incomplete source coverage
November 202300720Incomplete source coverage
December 202300744Incomplete source coverage
January 202400744Incomplete source coverage
February 202400696Incomplete source coverage
March 202400744Incomplete source coverage
April 202400720Incomplete source coverage
May 202400744Incomplete source coverage
June 202400720Incomplete source coverage
July 202400744Incomplete source coverage
August 202400744Incomplete source coverage
September 202400720Incomplete source coverage
October 202400744Incomplete source coverage
November 202400720Incomplete source coverage
December 202400744Incomplete source coverage
January 202500744Incomplete source coverage
February 202500672Incomplete source coverage
March 202500744Incomplete source coverage
April 202500720Incomplete source coverage
May 202500744Incomplete source coverage
June 202500720Incomplete source coverage
July 202500744Incomplete source coverage
August 202500744Incomplete source coverage
September 202500720Incomplete source coverage
October 202500744Incomplete source coverage
November 202500720Incomplete source coverage
December 202500744Incomplete source coverage
January 202600744Incomplete source coverage
February 202600672Incomplete source coverage
March 202600744Incomplete source coverage
April 202600720Incomplete source coverage
May 20265151744Incomplete source coverage
June 202600720Incomplete source coverage
July 202600744Incomplete source coverage
August 202600744Incomplete source coverage
September 202600720Incomplete source coverage
October 202600744Incomplete source coverage
November 20260037Incomplete source coverage

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.

  • No tracked source for this period
  • Incomplete source coverage
Limited recordsLimited records

No tracked source covers January 2022 to April 2022.

Source: U.S. Environmental Protection Agency sewer overflow records. Records cover May 3, 2022 to November 2, 2026.

Show table
Days with a reported discharge per month
MonthDays with a reported dischargeCoverage
January 20220No tracked source for this period
February 20220No tracked source for this period
March 20220No tracked source for this period
April 20220No tracked source for this period
May 20220Incomplete source coverage
June 20220Incomplete source coverage
July 20220Incomplete source coverage
August 20220Incomplete source coverage
September 20220Incomplete source coverage
October 20220Incomplete source coverage
November 20220Incomplete source coverage
December 20220Incomplete source coverage
January 20230Incomplete source coverage
February 20230Incomplete source coverage
March 20230Incomplete source coverage
April 20230Incomplete source coverage
May 20230Incomplete source coverage
June 20230Incomplete source coverage
July 20230Incomplete source coverage
August 20230Incomplete source coverage
September 20230Incomplete source coverage
October 20230Incomplete source coverage
November 20230Incomplete source coverage
December 20230Incomplete source coverage
January 20240Incomplete source coverage
February 20240Incomplete source coverage
March 20240Incomplete source coverage
April 20240Incomplete source coverage
May 20240Incomplete source coverage
June 20240Incomplete source coverage
July 20240Incomplete source coverage
August 20240Incomplete source coverage
September 20240Incomplete source coverage
October 20240Incomplete source coverage
November 20240Incomplete source coverage
December 20240Incomplete source coverage
January 20250Incomplete source coverage
February 20250Incomplete source coverage
March 20250Incomplete source coverage
April 20250Incomplete source coverage
May 20250Incomplete source coverage
June 20250Incomplete source coverage
July 20250Incomplete source coverage
August 20250Incomplete source coverage
September 20250Incomplete source coverage
October 20250Incomplete source coverage
November 20250Incomplete source coverage
December 20250Incomplete source coverage
January 20260Incomplete source coverage
February 20260Incomplete source coverage
March 20260Incomplete source coverage
April 20260Incomplete source coverage
May 20261Incomplete source coverage
June 20260Incomplete source coverage
July 20260Incomplete source coverage
August 20260Incomplete source coverage
September 20260Incomplete source coverage
October 20260Incomplete source coverage
November 20260Incomplete source coverage

Reported volume per year

Gallons (axis: K thousand, M million), summed from the 1 report that gave a volume as a number.

  • Incomplete source coverage
Limited recordsLimited records

Source: U.S. Environmental Protection Agency sewer overflow records. Records cover May 3, 2022 to November 2, 2026.

Show table
Reported volume per year
YearReported volume, gallonsReports with a volumeReports without a volumeCoverage
2022000Incomplete source coverage
2023000Incomplete source coverage
2024000Incomplete source coverage
2025000Incomplete source coverage
20261,00010Incomplete source coverage

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 recordsLimited records

Source: U.S. Environmental Protection Agency sewer overflow records. Records cover May 3, 2022 to November 2, 2026.

Show table
Hours with a discharge or advisory status per year
YearHours with a discharge or advisory statusShare of the yearCoverage
202200.0%Incomplete source coverage
202300.0%Incomplete source coverage
202400.0%Incomplete source coverage
202500.0%Incomplete source coverage
2026510.7%Incomplete source coverage

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.

Source: U.S. Environmental Protection Agency sewer overflow records. Records cover May 3, 2022 to November 2, 2026.

Show table
Reported discharges by calendar month, all years
MonthReported dischargesYears of records
January00
February00
March00
April00
May10
June00
July00
August00
September00
October00
November00
December00
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)

Reports linked to Mount Hope Bay

Reports linked to Mount Hope Bay, newest first
StartEnd Sewer operator OutletTypeVolumeSourceLinks
May 21, 2026, 5:22 PM EDT May 21, 2026, 8:20 PM EDT TIVERTON SANITARY SEWER SYSTEM Not provided Sanitary sewer overflow (SSO) 1,000 gallons EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators) via ECHO NPDES Sewer Overflow and Bypass Event Dataset, record RISS00037:2:1, reported May 26, 2026, 12:00 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Read report: Sanitary sewer overflow (SSO), TIVERTON SANITARY SEWER SYSTEM, May 21, 2026, 5:22 PM EDT · Map

Wastewater outlets on this water

Outfall: a pipe or outlet where wastewater enters a water body.

No wastewater outlet in our records is linked to this water.

Boat launches

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

Sources covering this water

1 record linked to this water. Updated Nov 2, 2026, 12:13 PM EST.