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Sewer deduct meter rules in Union Grove, WI

Wisconsin · Last checked November 2026

Sewer credit program

Union Grove gives sewer credits for lawn irrigation through an approved deduct meter, and a one-time credit of up to $300 for filling a new swimming pool.

Key facts

Irrigation
Credits through an approved sewer deduct meter, for April 1 to September 30 billing periods.
Pool fill
One-time credit up to $300 for a new permitted pool; apply by September 1.

Is a deduct meter worth it?

It depends on how much you water and your sewer rate. Run the savings calculator with your summer usage.

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How it works

Sewer charges are usually based on how much water passes through your water meter, even though lawn and pool water never reaches the sewer. Some utilities let you install a second meter, called a deduct or irrigation meter, so that outdoor water is not billed as sewer. Others already solve it by basing summer sewer charges on winter water use, so no meter is needed.

  1. Check your bill: if sewer is based on a winter average, you already avoid most summer sewer charges.
  2. If not, ask the utility whether it allows a deduct or irrigation meter and what it charges.
  3. Hire a licensed plumber and pull the permit. Many utilities also require a backflow preventer.
  4. Credits usually start only after the utility inspects and registers the meter, never retroactively.

What it costs

Installation by a licensed plumber often runs several hundred to over a thousand dollars, plus any utility fees. Use the calculator below to see how fast it pays back.

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Sources

Last checked November 2026. Programs open, close and change funding every year. Confirm with the city before you hire anyone. Report a change.