WSI Wastewater Treatment / Discharge Designer

Design a wastewater treatment train

Enter the waste stream, discharge destination, and laboratory results. The design formula compares influent with EPA secondary / NPDES-style and WHO safe-use targets and returns a modular treatment train for quoting.

Customer

Contact name *

Company / camp / utility

Phone

City

State / region

Country

Application

Duty / discharge

Waste stream type *

Design standard

Discharge destination *

Design flow (gpm)

or design flow (m³/day)

Population equivalent

Peak factor (optional)

Site notes (power, containers, existing tanks, climate)

Attachments (optional)

Lab reports, drawings, photos, or site sketches. Up to 5 files, 20 MB total. CSV, DOC, DOCX, DWG, DXF, GIF, HEIC, JPEG, JPG, PDF, PNG, RTF, TIF, TIFF, TXT, WEBP, XLS, XLSX, ZIP.

Leave a parameter blank if it was not tested. Values are influent concentrations. EPA 40 CFR 133 secondary (BOD5/TSS 30 mg/L monthly, ≥85% removal, pH 6–9) is the federal floor for POTWs; ammonia, TN, TP, pathogens, and oil & grease use typical permit-style design targets — site-specific permits control.

Influent organics & solids

BOD5 (mg/L)

CBOD5 (mg/L)

COD (mg/L)

TSS (mg/L)

VSS (mg/L)

Oil & grease (mg/L)

FOG (fats, oils, grease) (mg/L)

Surfactants (MBAS) (mg/L)

Physical / inorganic

pH (pH units)

Alkalinity (as CaCO3) (mg/L)

Temperature (C)

TDS (mg/L)

Conductivity (µS/cm)

Residual chlorine (mg/L)

Nutrients

Ammonia-N (mg/L)

TKN (mg/L)

Nitrate-N (mg/L)

Total nitrogen (mg/L)

Total phosphorus (mg/L)

Orthophosphate (as P) (mg/L)

Pathogens

Fecal coliform (CFU/100 mL)

E. coli (CFU/100 mL)

Metals (pretreatment placeholders)

Copper (mg/L)

Zinc (mg/L)

Chromium (total) (mg/L)

Nickel (mg/L)

Lead (mg/L)

Submitting saves the inquiry to the WSI database and emails the design package to info@water-services.us. Customer email is used for Reply-To only (no automatic CC unless staff enable it). Output is a preliminary process concept for quoting — not a sealed engineering drawing.