The Stormwater Blogs

SW Editor's Blog

December 1st, 2008 11:24am PST

The Case of the Missing Manhole Cover

Posted By Janice Kaspersen Comments

Here’s a problem you might not expect to deal with: bits of your stormwater infrastructure disappearing in the night.

As reported in the November issue of Water Environment & Technology, over two days in August, 106 catch-basin covers were stolen in Cleveland. That’s 6 tons of cast iron, which the thieves presumably are selling as scrap metal. The article also mentions other cities that are having similar losses of metal inventory like water meters and sewer grates: Philadelphia (2,000 inlet covers); Long Beach, California (80 sewer covers and eight fire hydrants); and Flint, Michigan (400 manhole covers).

Purchasing replacements for these items, and the labor to get them back where they belong, costs far more than the value of the metal. Their value as scrap perhaps $10 to $20 per manhole cover at today’s prices, which have risen in the last few years from about $35 a ton to more than $400 a ton in some places. Cities also face liability issues because of mishaps caused by the missing items—people falling into open manholes, for example. Some cities are considering using alternative materials like fiberglass or polyurethane for manhole covers, or at least placing alarms on them.

Has your city experienced a similar problem, either with outright theft or with vandalism of materials or equipment? Do you include an item in your budget specifically to deal with it?

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