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The City of Longmont’s Wastewater Treatment Facility was designed to treat domestic sewage. Strong wastestreams, such as those derived from food processing operations, cost more to treat because of the increased pollutant load. The sewer surcharge provisions in the City Ordinance were created to achieve equity between treatment costs and charges for all users. Please refer to sections 14.08.650 and 14.08.665 of the Longmont Municipal Code for further information. All establishments that prepare food on-site are subject to surcharges. |
IP Program WWTP 501 East 1st Avenue Longmont, CO 80501 Phone (303) 651-8667 or email water@ci.longmont.co.us |
Grease Interceptors & Surcharges NEW- |
Industrial users are billed separately by the Industrial Pretreatment Program.
Commercial users have a "BOD Surcharge" item on their utility bill.
Utility Billing Department
Civic Center
350 Kimbark Avenue
Longmont, Colorado 80501
phone (303) 651-8664
The pollutants of concern in the surcharge program are Biochemical Oxygen Demand (BOD), Total Suspended Solids (TSS) and Total Kjeldahl Nitrogen (TKN). The State of California’s Water Resource Control Board Commercial User Strength Characteristics is used to determine the strength of pollutants for different users. Contact the IP Program at 303-651-8667 if you would like a copy of this table.
The amount of the surcharge added to the utility bill is determined by two values: pollutant contributions & water use.
Fast food restaurants are estimated to have commercial user strengths of 400 mg/L BOD and 450 mg/L TSS. Restaurants and bakeries have commercial user strengths of 1000 mg/L BOD and 600 mg/L TSS.
For permitted industrial users, the discharge monitoring report information is used to determine the pollutant load.The current surcharges for BOD, TSS and TKN are available on-line.
Example of a Restaurant Surcharge Calculation coming soon.
Water usage is measured by your water meter. Since conserving water will reduce your flow, frugal water use is one way to hold down surcharge costs and simultaneously reduce water usage costs.
The City requires interceptors so that grease is removed from wastewater. This
reduces sewer blockages, sewer overflows and City requirements to clean sewers
more than once per year.
The surcharge is billed for the cost of treating excessive BOD and TSS. Installing
a grease interceptor does not remove a business from the surcharge program.
This page was updated
May 10, 2010
City of Longmont Public Works & Natural Resources
Industrial Pretreatment Program
