Light pollution improved in El Paso, but more can be still be done


This image of Earth's city lights in 2010 was created with data from the Defense Meteorological Satellite Program Operational Linescan System. Data courtesy Marc Imhoff of NASA GSFC and Christopher Elvidge of NOAA NGDC. Image by Craig Mayhew and Robert Simmon, NASA GSFC.

Dark Sky advocates say that El Paso’s 14-year-old light pollution ordinance has made a difference for stargazing in the Sun City.

“I’m happy to say that the light pollution in El Paso is practically gone,” said Marcia Turner, a community activist who helped push for the 2005 city ordinance that required changes in municipal and business lighting practices to help keep the stars visible in the night sky.

Before the Dark Sky ordinance, Turner said stores would often compete for business by using bright lights which not only added a heavy amount of light pollution but made it difficult for people’s eyes to adjust.

“Notice the stars that you can see now, that you couldn’t before,” Turner said.

In 2003, scientists at the McDonald Observatory in Fort Davis, Texas, reported that they could see El Paso’s light pollution even though they were 200 miles away. Things are different now, said Bill Wren, an astronomer with McDonald Observatory.

“From personal observation, driving in and around El Paso and flying into El Paso, I noticed that much of the new lighting – and I can’t say most, I don’t really know how to quantify it – but much of the new lighting that has been installed in El Paso since the ordinance has been good,” Wren said.

The worst light pollution in the area is now coming from the Permian Basin oil field around Midland and Odessa, Wren said.

The Dark Sky ordinance gave El Paso businesses 10 years to comply with the new lighting requirements, meaning by 2015. That goal still hasn’t been met.

An example of a covered street light on the UTEP campus.


“There’s still a lot of light being installed that’s not compliant, so I don’t believe there’s much in the way of enforcement going on, but much of the light that’s going in is good,” Wren said.

Joel Candelaria, an electrical plans examiner for the city of El Paso, said during the field inspection of new construction, electrical inspectors are responsible for verifying that proper light fixtures are installed. The biggest issue is that despite the city ordinance requiring existing lighting on older buildings to be updated by 2015, not everyone has made the change.

When buildings are found that do not adhere to the requirements set up by the Dark Sky ordinance, the situation is handed over to code enforcement. Violators can be charged with a Class C misdemeanor, which carries a fine of up to $2,000. They can subsequently be charged with a separate offense each day they are out of compliance.

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UTEP’s Centennial Plaza uses covered and downward lights.

There are exceptions to lighting restrictions. For instance, airports and recreational areas follow their own set of light regulations. Flood lights that are firm and grounded also are allowed. But residential lighting must be shielded to minimize stray light “trespassing” across property boundaries.

In some areas in El Paso, decorative lights may not be allowed, with the exception of lighting sculptures or flags. Candelaria said that the Dark Sky ordinance restrictions are heavily affected by the area people live in.

“You kind of have to go through it page by page, and scenario per scenario.”

The city does allow an exception for seasonal decorations using low-wattage incandescent lights, but only from November 15 to January 15.

Candelaria said LED lights are now more common as more businesses are starting to switch to them for energy efficiency.

“The LED lights are a lot brighter. So obviously you’re getting more of a halo affect. So I can’t really say that it’s mission accomplished,” Candelaria said.

How residents can reduce light pollution

The International Dark Sky Association offers the following advice on how residents can reduce light pollution:

  • LEDs and compact fluorescents (CFLs) can help reduce energy use and
    protect the environment, but only warm-colored bulbs should be used.
  • Dimmers, motion sensors and timers can help to reduce average illumination levels and save even more energy.
  • Outdoor lighting fixtures that shield the light source to minimize
    glare and light trespass help prevent light pollution. Illustrated guide
    to the acceptable vs unacceptable types of light fixtures:
  • Turn off unnecessary indoor lighting – particularly in empty office buildings at night.
  • Avoid blue lights at night. Blue-rich white light sources are also known to increase glare and compromise human vision.



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