Waukesha, WI Environmental Rules: Stormwater Management (2026)

01, adopted under Wis. 234. 5 acres or more of impervious surface (existing gravel counts as 50% impervious), involves construction of a new public or private road, disturbs one acre or more of land, or is flagged by the City as likely to harm an environmentally sensitive area. A separate, lower construction-erosion-control trigger applies under the same section (disturbance of 3,000 square feet, more than 400 cubic yards of cut/fill, or 300 feet of utility trench work). 07 require a signed form, fee, site plan, erosion control plan, storm water management plan, maintenance agreement, and financial assurance before the Authority will issue a permit.

23 and does not preempt WDNR permits or NR 151 nonagricultural performance standards. 04 citing Wis. 693(10). 14: the Authority issues written violation notices describing required remedial action and a compliance schedule, and can combine forfeiture, stop-work orders, permit revocation, injunctions, nuisance abatement, or emergency corrective entry onto the site. Appeals of an Authority order go to the City of Waukesha Board of Zoning Appeals, which can grant variances where a literal reading of Chapter 32 would create unnecessary hardship.