Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398)
Storm overflow operated by Northumbrian Water. The source names River Tees as the receiving water.
- 0
- Spills in 2025
- 0
- Recorded hours
- 90.8%
- Monitor operation
- 2
- Years listed
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398) recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 0 | 0 |
| England | 12,009th of 14,239 | 11 | 22.3 |
| Northumbrian Water | 1,305th of 1,559 | 11 | 15.6 |
| Tees | 37th of 40 | 17.5 | 36.6 |
Rank 1 has the most spills. Equal counts share a rank. Only overflows with a reported count are ranked. Counts do not measure volume, so a higher rank does not mean more sewage.
Annual spill history
| Year | Spills | Duration | Monitor operation | Source |
|---|---|---|---|---|
| 2025 | 0 | 0 hours | 90.8% | Official data |
| 2024 | 0 | 0 hours | 89.2%Low coverage | Official data |
A missing figure means the source did not provide a usable value. A zero is shown as zero. Monitor operation below 90% can make comparison less reliable.
Outlet details
- Water company
- Northumbrian Water
- Outlet type
- Storm overflow on the sewer network
- Permit
- 25/04/1700
- Activity reference
- A1 & A2
- Grid reference
- NZ4473118661, NZ4649319169 & NZ4651519191
- Waterbody ID
- GB510302509900Official waterbody record ↗
- Location source
- Official annual grid reference
- Location precision
- About 1 metres
- Location note
- The source cell states 3 grid references. This marker uses the first stated reference.
About the name and type
The annual return lists this asset as “SO on sewer network”: storm overflow on the sewer network. The return places this overflow on the sewer network.
The waterbody link opens the Environment Agency record for the exact ID in the return. It is a source lookup; we do not import its classification.
Where it is
The recorded position is about 1.5 km north-west of the Thornaby-on-Tees reference point in the ONS built-up areas data.
Area and water pages
Check the official record
Public access to this outlet is unknown. Do not enter restricted land or use this page as a route guide.
Open official source ↗Other outlet records nearby
- Tower Street CSOCurrent status unknown
Northumbrian Water · River Tees
- Station Street CSOCurrent status unknown
Northumbrian Water · Tees Estuary
- Bishop Street North CSOCurrent status unknown
Northumbrian Water · River Tees
- Boathouse Lane No 2 SPSCurrent status unknown
Northumbrian Water · Tees Estuary
Questions about Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398)
- Who operates Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398)?
- Northumbrian Water is the operator named in the annual record. The permit reference is 25/04/1700.
- Where does Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398) discharge?
- The source names River Tees as the receiving water. This does not show how far a discharge travelled.
- How many times did Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398) spill in 2025?
- The 2025 return records 0 counted spill events and 0 hours of recorded discharge. Spills are counted with the 12/24-hour method, so this is not a count of every start signal.
- Can I trust the 2025 figures for this outlet?
- The monitor worked for 90.8% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398) discharging right now?
- This record is not matched to a company live feed, so we cannot show a current report. Only the annual figures are available for this outlet.
- How accurate is the map marker?
- The marker comes from the grid reference in the official annual return, which is accurate to about 1 metres. It shows the recorded outlet position, not the extent of any discharge.
- What kind of outlet is Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398)?
- The annual return lists the asset type as “SO on sewer network”, which means storm overflow on the sewer network. The return places this overflow on the sewer network.
- How does Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398) compare with other overflows?
- Tower Street CSO, Northumbrian Water (25/04/1700 · A1 & A2 · NWL01398) recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count. Ranks compare counted spill events only. They do not compare volume or harm.
- Does zero spills mean the water was safe?
- No. A zero means the annual return recorded zero counted spill events for this outlet and year. It is not a water-quality test, and pollution can come from other sources.