[HISTORY: Adopted by the Village Board of the Village of Williams Bay as § 15.03 of the 2011 Code. Amendments noted where applicable.]
The purpose of the light ordinance is to regulate outdoor night lighting fixtures to preserve and enhance the area's dark sky while promoting safety, conserving energy and preserving the environment for astronomy. Yerkes Observatory does much research and study by observing and taking pictures of the heavens through telescopes and for that purpose requires a clear atmosphere and as little as possible interference from ground lighting, and the Village appreciates that the Observatory is located within its boundaries and is willing to do everything reasonably possible to aid it in its research and study; therefore, this chapter is enacted in furtherance of such public purpose.
As used in this chapter, the following terms shall have the meanings indicated:
OUTDOOR LIGHTING FIXTURE
An outdoor artificial illuminating device, whether permanent or portable, used for illumination or advertisement, including searchlights, spotlights and floodlights, whether for architectural lighting, parking lot lighting, landscape lighting, billboards or streetlighting.
SHIELDED
A fixture that is shielded in such a manner that light rays emitted by the fixture, either directly from the lamp or indirectly from the fixture, are projected at least 15° below a horizontal plane running through the lowest point on the fixture where light is emitted.
All outdoor lighting fixtures shall be shielded, except incandescent fixtures 150 watts or less and other sources of 70 watts or less.
All outdoor lighting shall not exceed the illumination levels recommended by the Illuminating Engineering Society of North America (IES).
Metal halide fixtures shall be filtered. Filtering means any outdoor light fixture which has a glass or acrylic enclosure. Quartz glass does not meet this requirement.
A. 
Existing light fixtures which do not conform with §§ 229-3, 229-4 and 229-5 of this chapter are allowed, but extinguishing of such lights by 11:00 p.m. is encouraged.
B. 
No outdoor recreational facility, whether public or private, shall be illuminated after 11:00 p.m. except to conclude any recreational or sporting event or other activity conducted, which is in progress prior to 11:00 p.m. at a ballpark, school ball field, outdoor amphitheater, arena or similar facility.
C. 
Search lights. Advertising search lights are prohibited.
D. 
Advertising signs in which light is produced by glass tubing filled with neon, argon, and/or krypton.
E. 
Outdoor advertising signs of the type constructed of translucent materials and wholly illuminated from within.
F. 
Recreational lighting which requires upward illumination and architectural illumination of public buildings for aesthetic reasons are excluded provided the illumination is turned off at 12:00 midnight.
Display lot lighting shall be turned off within 30 minutes after closing of the business. Under no circumstances shall the full illumination of the lot be permitted after 11:00 p.m. Any lighting used after 11:00 p.m. shall be used as security lighting.
All architectural lighting shall be of 150 watts of or less (incandescent) or 70 watts or less (other types) and be extinguished no later than 11:00 p.m. Lights shall have at least 90% of their light falling on the illuminated structure.
No new mercury vapor outdoor lighting fixtures shall be sold or installed after June 1, 1999. No replacement equipment or bulbs for mercury vapor lighting fixtures shall be sold or installed in the Village of Williams Bay after January 1, 2001.
The following are exempt from the requirements of this chapter:
A. 
Outdoor lighting fixtures existing and legally installed prior to the effective date of this chapter; however, any replacement of said lighting fixtures must comply with this chapter as set forth above.
Any person, firm, entity or corporation violating the provisions of this chapter shall be required to pay a forfeiture of not more than $500 for each day the violation continues after being issued a citation.