Worldwide wastewater treatment observatory · Greece

Aguas SB Observatory · public data to understand water

WWTP LARISSA

Greece · official identifier EL142001011

227,500h-e design capacity (2022) · 4th of 273

European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier EL142001011 · reported size 227,500 h-e design capacity · received load 145,592 h-e · reported treatment: PST · data year 2022. 4th of 273 records with reported size in the inventory of Greece; 1.6 % of the sum of those 273 records in h-e (sum of records, not national capacity); nearest inventoried plant at 1.4 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 · 2022

227,500h-e design capacity

145,592h-e received load (2022)

64 %reported load/capacity ratio (not hydraulic utilisation)

4th of 273by reported size among the 273 records with a size in the inventory · 1.6 % 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 + tertiary (more stringent) (as reported to the EEA: PST) · reported levels
Nitrogen removal	yes
Phosphorus removal	not reported
UV disinfection	not reported
Status	active
Reported coordinates	39.6644, 22.4404 precision reported by the source: level 2 what it means
Source and year	European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · dataset record

FUENTES PÚBLICAS

What public sources report

Documented milestones

2023-01-19 · The January 2023 decision included a solar sludge-drying unit for the Larissa wastewater treatment plant in the funding programme. Greek Ministry of Environment and Energy

Other published data

Mean annual volume treated reported in the 2022 cycle	9,634,950 m³/year (2022) · source

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 L04; it does not change the official data.

REGULATORY REFERENCES

Referencia normativa: Greece

Regulatory framework of Greece · Directive (EU) 2024/3019: reported-capacity band 150,000 p.e. or more; obligations are set by agglomeration load, not by the capacity of this plant. Individual applicability is not determined in this profile.

SCENARIO

Reference energy scenario for this load estimate · simulator engine

4,460,163reference kWh per year for this load

30.6kWh per h-e (average load) per year

669,024€ per year at 0.15 €/kWh

59 %share of energy used for aeration

what this estimate is · Inputs: 145,592 p.e. of reported load; equivalent average load 145,601 p.e. with the reference profile of Greece (hypothesis with reported load and reference profile; not a measurement). Open this scenario in the simulator · how it is calculated and what it is not.

Reference scenario computed on the server from the reported load and the country profile; an estimate, not a measurement. The simulator recomputes it when opened.

WATER THAT COULD RETURN

Reuse potential

9.4estimated hm³ of treated water per year

tertiary treatment reporteda starting point for reclamation

what this estimate is · Volume estimated from the reported load (25,770 m³/day of reference), not measured or available for reclamation.

LOCATION

Greece: this plant on the map

this plant on the map · regional directory.

NEARBY PLANTS

Nearby wastewater treatment plants

Plant	Distance	Capacity (h-e)	Load 2022	Treatment
Yannouli	1.4 km	10,833	11,630	primary, secondary and tertiary
Tyrnavos	14.5 km	19,500	10,898	primary, secondary and tertiary
Aghia	28.4 km	9,750	3,643	primary, secondary and tertiary
Elassona	33.3 km	12,233	9,555	primary, secondary and tertiary
Aghiokabos	34.2 km	13,800	2,174	primary, secondary and tertiary

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

QUESTIONS

Frequently asked questions about this plant

What capacity does WWTP LARISSA report?

Reported size: 227,500 h-e design capacity. Received load: 145,592 h-e. Units are retained without conversion.

What treatment is reported?

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

How much energy would a reference plant use with the load of LARISSA?

Aguas SB simulator reference scenario for 145,592 p.e. of reported load: 4,460,163 kWh per year (30.6 kWh per p.e. of average load), with aeration as 59 % of consumption. Estimate with the country reference profile; not a measurement of the plant.

SOURCE AND CORRECTIONS

Source

reported data · European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · data 2022 · edition 2023 · 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.