The United Nations General Assembly declared March 22 World Water Day to call attention to the global issue of clean drinking water availability back in 1992. Since then, there have been hundreds of related events and activities the world over.

In 2007, the Tap Project, a grassroots organization in New York City, launched to help raise awareness and money for the campaign. This year the program goes nationwide. Here's how it works: From March 16-22, participating restaurants will invite diners to donate at least $1 when they order tap water that would usually be served for free. All the funds will be collected and donated to UNICEF who, with that $1, can provide a child with clean drinking water for 40 days.

While drinkable tap water is abundant in many countries, more than 2 billion people worldwide don't have regular access to clean drinking water.

According to the Tap Project website, nearly 80 Boston restaurants are participating. Visit your favorite this week!

• 33 Restaurant & Lounge
• Alumni Sports Cafe
• Ariadne Restaurant & Bar
• Asgard Irish Pub
• Avenue One at the Hyatt Regency Boston
• B&G Oysters, Ltd.
• Bambara
• Beehive
• Bin 26 Enoteca
• Blue Ginger

More participating restaurants after the jump! Image from UNICEF.

Post contributed by Dale Cruse. Cruse is a website developer who is helping to change the wine world. He likes to eat, he likes to drink, and he likes to write about both at Drinks Are on Me.

• Cafe Fleuri at The Langham


• Cafe Sol Azteca


• Cafeteria Boston


• Cask'n Flagon


• CentreStreet Cafe


• The Charles Hotel


• Chiara


• Clink at The Liberty Hotel


• Clio


• Craigie Street Bistrot


• The Dogwood Cafe


• Excelsior


• Exchange Street Bistro


• Fajitas & 'Ritas


• Fireplace


• The Foundation Lounge


• Grill 23 & Bar


• Haru Boston


• Harvest


• Harvest Cafe


• Henrietta's Table


• Ithaki


• Ivy Restaurant


• JJ Foleys Cafe


• Joe & Maria's


• Jose's Mexican Restaurant


• Kagawa Sushi Bar & Restaurant


• Kinsale Irish Pub


• KO Prime


• L'Andana


• Lala Rokh on Beacon Hill


• The Langham, Boston


• Les Zygomates


• Masa Restaurant


• Masona Grill


• Melissa's Main Street Bistro


• Mistral


• Mooo... Restaurant


• Noir


• Oishii Boston


• The Penguin Pizza Restuarant


• Pho Republique


• Pigalle


• POPS


• Pronto


• Red Sky Restaurant & Lounge


• Rialto Restaurant


• Rocca Kitchen and Bar


• Rustic Kitchen


• The Savant Project


• Siam Delight


• Skipjack's


• Sol Azteca


• Sorellina


• The Squealing Pig


• Stella Restaurant


• Stix Restaurant & Lounge


• Sunset Grill & Tap


• Tantric Indian Bistro


• Todd English's Olives Boston


• Toro


• Tresca


• Umbria Ristorante


• UpStairs on the Square


• Veggie Planet


• Vinoteca di Monica


• Vox Populi


• Z Square