WWTP CARDIFF STW

United Kingdom · official identifier UKWAWA_WW_TP000026

977,283h-e design capacity (2018) · 9th of 1,875

European Environment Agency — Waterbase-UWWTD, data call 2019 (v07.01) · official identifier UKWAWA_WW_TP000026 · reported size 977,283 h-e design capacity · received load 938,277 h-e · reported treatment: PS · data year 2018. 9th of 1,875 records with reported size in the inventory of United Kingdom; 1.0 % of the sum of those 1,875 records in h-e (sum of records, not national capacity); nearest inventoried plant at 8.4 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

977,283h-e design capacity

938,277h-e received load (2018)

96 %reported load/capacity ratio (not hydraulic utilisation)

9th of 1,875by reported size among the 1,875 records with a size in the inventory · 1.0 % 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	51.4772, -3.1330 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

FUENTES PÚBLICAS

What public sources report

Documented milestones

2001-03-01 · In March 2001, work was documented on the new treatment plant intended to serve Cardiff and the valleys to the north. WaterWorld

Facts taken from public documents, with their date and link; an authorisation, a project or a planned capacity do not prove operation or quantities actually treated. Aguas SB editorial layer, lot L02; it does not change the official data.

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
Cardiff (West) And Barry (Cog Moors)	8.4 km	227,740	219,607	primary and secondary
Drope Stw Westbury Homes Glamorgan Stw	10.1 km	2,024	1,995	primary and secondary
Rhydlafar St Stw	11.0 km	3,003	2,852	primary and secondary
Creigiau Sew Stw	13.2 km	2,482	2,407	primary and secondary
Newport Stw · Ukwawa_ww_tp000006	14.3 km	304,036	296,808	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 CARDIFF STW report?

Reported size: 977,283 h-e design capacity. Received load: 938,277 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.