Prospect Heights water and sewer rates

At typical use (9 units, about 6,700 gallons a month), a Prospect Heights house pays about $114 a month for water and about $22 for sewer: about $1,630 a year. Estimated from public rates, not anyone's actual bill.

Who supplies water to Prospect Heights houses, what it costs, and how the sewer charge works.

Pay or manage it

Water and sewer billing ↗

City of Prospect Heights

These apply only to homes on City water, which serves a portion of the city's residents.

Use a month	Price per 1,000 gallons
Fixed charge	$54.83 a month
0 to more	$8.78

Source: The source of drinking water used by Prospect Heights is Lake Michigan, produced by the Village of Wilmette
Hardness: The tap water has a hardness of 150 mg/l or about 8.02 grains per gallon.

Sewer

Single-family residential $22.00 per month from July 1, 2026; sanitary sewer bills are issued quarterly.

Dates

When	What
11th of each month	City water bills are due on the 11th of the month after they are issued.
Quarterly	Sanitary sewer bills are issued on the 15th of January, April, July and October and are due on the 11th of the following month.

Sources

Checked October 30, 2026. Every number here comes from the public sources listed, matched by our checker.

Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.

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