0000950135-06-001981 8-K 2 20060330 4.01 9.01 20060331 20060331 WATERS CORP /DE/ 0001000697 3826 133668640 DE 1231 8-K 34 001-14010 06726271 34 MAPLE ST MILFORD MA 01757 5084782000 34 MAPLE STREET MILFORD MA 01757 WCD INVESTORS INC /DE/ 19960605 8-K 1 b60099wce8vk.htm WATER CORPORATION EX-16.1 2 b60099wcexv16w1.htm EX-16.1 LETTER FROM PRICEWATERHOUSECOOPERS, DATED 3/30/06