Our weekday morning column, 5 Things You Need to Know, provides you with information that can help you plan your day and give you some fodder for water cooler conversations.

1. The Lake Cochituate Watershed Council - Big Heart Little Feet Trail Buddies and Mathworks volunteers will collaborate today, for the last time this year, on a clean-up of Fisk Pond. Volunteers will assemble at 10 a.m. near Speen Street and the Roche Bros. settling pond.

2. What would you do with a 10,000 square-foot house? (Presumably most of us don't have one already.) The future buyers of one of the most expensive homes on the market in Natick will have to figure that out. We compiled a list of the most expensive homes for sale right now in town; take a look if you haven't already.

3. Author James Patterson has teamed up with Patch to offer some summer reading lists for kids. You'll see them in our Summer Reading Guide, starting today.

4. Speaking of summer reading lists, the Morse Institute Library has posted the lists for the middle and high schools on its webpage. Most of the books are available at the library.

5. The town has posted the following message to District 1 water users on its website: Water and sewer customers who have just received their bills in District 1 will notice that the incorrect date is printed on the bill. The correct due date is June 18, 2012, not May 15, 2012. No interest will be accrued for any bills received on or before June 18. Contact the Utility Billing Division at 508-647-6425.