How To Interpret Your Bill for Surcharges & Monitoring Charges

On the front of your bill you will find the following information:

Meter Readings

The previous reading and the current reading is shown on your bill.

The amount used is the difference between the previous and current readings. The consumption is in cubic feet. To convert cubic feet to gallons multiply by 7.5. Remember to add all water meters together if you have more than one account.

Billing Information

Note: Sewer charges and surcharges are based on the water consumption (amount of water used) unless a sewer flume meter and account have been set up.

Sewer Surcharges
The city charges sewer surcharge fees for discharges containing high-strength waste. The concentration of Biochemical Oxygen Demand (BOD) and Total Suspended Solids (TSS) are determined through representative sampling of your wastewater discharge. Sewer surcharges are applied in excess of 200 mg/l. If you do not have a rate listed, this means that your concentration was below the 200 mg/l. Your surcharge is listed as pounds on your bill.

BOD Rate: Cost of treating one thousand pounds of BOD = $211.00

TSS Rate: Cost of treating one thousand pounds of TSS = $161.00


TSS Example: The TSS pounds on the water bill is 873 and the water in cubic feet on the water bill is 25,890.

Convert cubic feet to gallons by multiplying by 7.5.

25,890 x 7.5 = 194,175 gallons

Convert gallons to million gallons by dividing gallons by 1,000,000.

194,175 / 1,000,000 = 0.194175 million gallons

Note: This is the same calculation as above since the formula is based on flow.

Your bill no longer has the concentration for BOD and TSS. The Industrial Waste Control (IWC) section supplies this information on your quarterly monitoring report.

Your BOD and TSS concentration will remain the same for three months. The water consumption will change each month, which results in a different poundage.

Note: Sewer Surcharges are multiplied by 1.5 if your property is outside the city limits.

Any outside laboratory analyses shall be charged at the actual analytical cost. If you have questions concerning these charges, please call the IWC section at 765-0130 or email .

City Surcharge and Monitoring Fees



Sample Collection

$ 40.00 per sample


$ 4.00


$ 19.00


$ 12.00

Ammonia Nitrogen

$ 12.00


$ 18.00


$ 15.00


$ 12.00


$ 12.00


$ 12.00


$ 33.00

Kjeldahl Nitrogen

$ 15.00


$ 12.00


$ 10.00


$ 75.00


$ 10.00


$ 12.00

Oil and Grease Total

$ 50.00

Oil and Grease Mineral

$ 55.00


$ 12.00


$ 18.00


$ 10.00

Toxic Organics 625

$ 250.00

Toxic Organics 624

$ 250.00


$ 12.00

Helpful Links:

Billing Questions

Monitor Water Usage

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