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Washington County, WI Special Events & Permits: Park Event Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Group threshold
Special event form required over 100 people
Reservation age
Responsible person must be 18 or older
Fees
Use charges set by Land Use and Planning Committee
Deposit
Damage/cleanup deposit due at time of reservation
Administering agency
Planning and Parks Department
Amplified music
Requires prior Planning and Parks approval

Summary

Washington County requires any group of more than 100 people using a county park without a shelter rental agreement to file a special event request form with the Planning and Parks Department before the gathering, naming a responsible person and the planned activity. Smaller groups reserving shelters follow the County's standard reservation and damage-deposit process instead.

These county ordinances apply to unincorporated areas of Washington County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Group use of parks. Any assembly of persons over 100 in number without a shelter rental agreement shall submit a special event request form with the Planning and Parks Department before using the park and/or facility, giving the name of a person responsible and the activity planned. ... Reservations. Groups may reserve dates to use certain park facilities and areas according to the following: ... All reservations must be made by a responsible person, 18 years or older, who is a member of the group proposing to reserve the park facilities.

Full Breakdown

Under Washington County Code § 179-7C, groups may reserve dates for County park facilities and areas. Every reservation must be made by a responsible person at least 18 years old who belongs to the group requesting the facility, and that person is personally responsible for any damage or improper conduct connected with the reservation. Use charges for reserved facilities are set by the Land Use and Planning Committee, not a flat countywide fee, so the amount depends on the site and date booked.

Reservations also require a damage and cleanup deposit, due at the time of booking. The deposit is refunded once County staff inspects the facility after the event and confirms it was cleaned; cleaning equipment and supplies are not furnished by the park, so groups must bring their own. Physical damage, excessive litter, or conduct that violates federal, state, County or local rules during the reserved activity can cost the group its deposit, and damage beyond the deposit amount is billed to whoever signed the reservation application. Misrepresenting information on the reservation form forfeits the deposit outright and triggers immediate ejection from the park.

Separately, § 179-7B(15) sets the trigger for a special event request: any assembly of more than 100 people that does not already hold a shelter rental agreement must file that form with the Planning and Parks Department, listing a responsible person and describing the planned activity, before the group uses the park or facility. Live amplified music also needs prior Planning and Parks approval, either at the time of reservation or through the special event request form.

Violations & Fines

Violating any provision of Chapter 179 carries the general penalty set out in Chapter 1, Article III of the Code of Washington County. Anyone who damages or destroys County park property is also liable for the cost of repair or replacement, in addition to any penalty imposed for violating § 943.01(1), Wis. Stats. (criminal damage to property), which the County adopts by reference in § 172-1A.

Frequently Asked Questions

Do I need a permit for a small family gathering in a Washington County park?
No. The special event request form is only required when more than 100 people will assemble in a park without a shelter rental agreement. Smaller gatherings and any group renting a shelter still go through the County's standard shelter reservation process, which includes naming a responsible adult and paying a damage and cleanup deposit at booking.
Who is responsible if a rented shelter is damaged?
The person who signed the reservation application. Section 179-7C makes that responsible person, who must be at least 18, liable for any damage or improper conduct connected with the reservation, and damage exceeding the deposit is billed directly to them.
Can I play amplified music at a park event?
Only with the Planning and Parks Department's prior approval, given either when you make the reservation or through an approved special event request form. Portable, non-amplified music is allowed as long as it does not become a nuisance to other park users or staff.
What happens if I lie on the reservation form?
Misrepresentation on the reservation application forfeits the damage deposit and results in immediate ejection from the park, on top of any liability for damage caused during the event and any penalty that applies under Chapter 1, Article III of the County Code.

Sources & Official References

Other rules in Washington County

All Washington County rules

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