Worldwide wastewater treatment observatory · 
United States · California
Aguas SB Observatory · public data to understand water
WWTP Encina Water Pollution Control Facility
Carlsbad · official identifier CWNS2022_06009011001
40.51MGD reported design flow (2022) · 193rd of 15,772
EPA Clean Watersheds Needs Survey 2022 · official identifier CWNS2022_06009011001 · reported size 40.51 MGD reported design flow · reported treatment: Secondary · data year 2022. 193rd of 15,772 records with reported size in the inventory of United States; 0.08 % of the sum of those 15,772 records in MGD (sum of records, not national capacity); nearest inventoried plant at 7.0 km · 4 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
| Treatment | Secondary · reported levels |
|---|---|
| Reported coordinates | 33.1188, -117.3235 precision reported by the source: 4 m what it means |
| Source and year | EPA Clean Watersheds Needs Survey 2022 · dataset record |
FUENTES PÚBLICAS
What public sources report
Documented milestones
- 2018-09-12 · On 12 September 2018, the regional board adopted discharge requirements for the Encina treatment facility through its ocean outfall. San Diego Regional Water Quality Control Board
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 L06; it does not change the official data.
REGULATORY REFERENCES
Referencia normativa: United States
Regulatory framework of United States. Individual applicability is not determined in this profile.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | MGD reported design flow | Treatment |
|---|---|---|---|
| Gafner Water Recycling Facility | 7.0 km | 1 | Advanced |
| Oceanside, City of (La Salina WWTF) | 8.1 km | 5.5 | Advanced |
| Oceanside, City of (San Luis Rey WWTF) | 8.1 km | 15.5 | Advanced |
| 4S Ranch Wastewater Treatment Plant | 9.1 km | 8 | Secondary |
| San Elijo WRF | 12.6 km | 5.25 | Advanced |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP Encina Water Pollution Control Facility report?
Reported size: 40.51 MGD reported design flow. Units are retained without conversion.
What treatment is reported?
Treatment Secondary. Nitrogen, phosphorus and UV are shown only when explicitly reported.
SOURCE AND CORRECTIONS
Source
reported data · EPA Clean Watersheds Needs Survey 2022 · data 2022 · edition 2022 · source licence: Public domain (EPA geospatial default; see LICENCIA.txt) · JSON for this plant · suggest a correction · catalogue 2026-11-06. Reported data, not a current inspection; no compliance judgements.