This calculator is for reference purposes only. Differences between
calculated results and billed surcharges may arise due to different rounding or
averaging methods; multiple outfall flow weighting; and/or other site specific
To request your current Biochemical Oxygen Demand (BOD) and Total Suspended
Solids (TSS) averages, please call the Industrial Waste Monitoring &
Pretreatment Office (IWMP) at (806) 775-3221. The Water Consumption should
be entered as it is shown on your LP&L bill.