How Bad is Diamond Bar and Walnut Pollution? See What New State Figures Say (Map)

How at risk are Diamond Bar and Walnut residents from pollution compared to other cities in the state?  According to the state officials, the answer is not so good for local residents.

Based on new state figures released this week, Diamond Bar is in the bottom 31 to 35 percentile of cities in terms of being at potential for health risks stemming from pollution of all sorts.  Walnut fares even worse, falling in the 26 to 30 percentile.

See a map of the data for every town in the state here

The figures come from a new state report issued by the California Environmental Protection Agency and the Office of Environmental Health Hazard Assessment (OEHHA) that compiles health risks based on 11 types of pollution and factors in seven categories of population and demographic factors, including poverty and education levels.

The purpose of the report is to identify communities that are eligible for grants from the state's Greenhouse Gas Reduction Fund, according to Sam Delson, an OEHHA spokesman. The law governing that fund mandates certain percentages be spent on disadvantaged communities, making it necessary to include economic factors in the state report.

Unfortunately for Diamond Bar and Walnut, only cities that rank in the bottom 10 percent will qualify - several neighboring cities, including Pomona, Montclair, and West Covina do qualify.

The state has a map of those communities that are eligible on the report website.

The map above shows scores from each of those categories as well as overall rankings for every zip code in California with a Patch publication. Simply click on any town to see the full report card for each zip code.

You can see a similar map showing every zip code in the state here, and see more details ofthe report on the state's website.

In general, both Diamond Bar and Walnut fare poorly on the metrics having to do with air quality, related in large part to traffic and diesel particulates, while doing very well overall on several demographic categories like education and poverty levels.