WWTP ST HELENS STW

United Kingdom · official identifier UKENNW_UU_TP000115

144,639h-e design capacity (2018) · 111th of 1,875

European Environment Agency — Waterbase-UWWTD, data call 2019 (v07.01) · official identifier UKENNW_UU_TP000115 · reported size 144,639 h-e design capacity · received load 136,888 h-e · reported treatment: PS · data year 2018. 111th of 1,875 records with reported size in the inventory of United Kingdom; 0.15 % of the sum of those 1,875 records in h-e (sum of records, not national capacity); nearest inventoried plant at 3.3 km · 1 within 10 km. Reported data with their source; estimates are not measurements of the plant.

Aguas SB does not manage this wastewater treatment plant.

WHAT THE DATA REPORT

Reported data official data · 2018

144,639h-e design capacity

136,888h-e received load (2018)

95 %reported load/capacity ratio (not hydraulic utilisation)

111th of 1,875by reported size among the 1,875 records with a size in the inventory · 0.15 % of the sum of those records (sum of records, not national capacity) · the largest plants in the country · how it is calculated

Treatment	primary + secondary (as reported to the EEA: PS) · reported levels
Nitrogen removal	not reported
Phosphorus removal	not reported
UV disinfection	not reported
Status	active
Reported coordinates	53.4580, -2.7006 precision reported by the source: level 2 what it means
Source and year	European Environment Agency — Waterbase-UWWTD, data call 2019 (v07.01) · dataset record

REGULATORY REFERENCES

Referencia normativa: United Kingdom

Regulatory framework of United Kingdom. Individual applicability is not determined in this profile.

LOCATION

United Kingdom: this plant on the map

this plant on the map · regional directory.

NEARBY PLANTS

Nearby wastewater treatment plants

Plant	Distance	Capacity (h-e)	Load 2018	Treatment
Billinge South Stw	3.3 km	6,565	6,162	primary and secondary
North Warrington Stw	10.1 km	332,932	287,363	primary and secondary
Liverpool South [woolton]) Stw	11.2 km	64,076	64,076	primary and secondary
Huyton Stw	11.3 km	91,405	81,470	primary and secondary
South Warrington Stw	11.5 km	44,461	44,426	primary and secondary

Distances are between reported coordinates; proximity does not establish a hydraulic connection.

QUESTIONS

Frequently asked questions about this plant

What capacity does WWTP ST HELENS STW report?

Reported size: 144,639 h-e design capacity. Received load: 136,888 h-e. Units are retained without conversion.

What treatment is reported?

Treatment PS. Nitrogen, phosphorus and UV are shown only when explicitly reported.

SOURCE AND CORRECTIONS

Source

reported data · European Environment Agency — Waterbase-UWWTD, data call 2019 (v07.01) · data 2018 · edition 2019 · source licence: CC BY 4.0 · JSON for this plant · suggest a correction · catalogue 2026-11-06. Reported data, not a current inspection; no compliance judgements.