| Balsam Branch PWS Plan - Nine Key Element Plan | NKE1 | Complete | 1995 |
| Beaver Dam PWS - Nine Key Element Plan | NKE2 | Active | 1994 |
| Big Wood Lake PWS Plan - Nine Key Element Plan | NKE3 | Active | 2001 |
| Branch River PWS Plan - Nine Key Element Plan | NKE4 | Complete | 1996 |
| Camp-Center Lakes PWS Plan - Nine Key Element Plan | NKE5 | Active | 1996 |
| Dell Creek PWS Plan - Nine Key Element Plan | NKE6 | Active | 1998 |
| Duck, Apple, and Ashwaubenon Creeks PWS Plan - Nine Key Element Plan | NKE7 | Active | 1997 |
| Fond du Lac River PWS Plan - Nine Key Element Plan | NKE8 | Active | 1997 |
| Horse Creek PWS Plan - Nine Key Element Plan | NKE9 | Active | 2001 |
| Kinnickinnic River St. Croix PWS Plan - Nine Key Element Plan | NKE10 | Active | 1999 |
| Lake Mendota PWS Plan - Nine Key Element Plan | NKE11 | Active | 1997 |
| Lake Noquebay PWS Plan - Nine Key Element Plan | NKE12 | Complete | 1995 |
| Lake Ripley PWS Plan - Nine Key Element Plan | NKE13 | Active | 1995 |
| Lower Little Wolf River PWS Plan - Nine Key Element Plan | NKE14 | Active | 1997 |
| Lower Big Rib River PWS Plan - Nine Key Element Plan | NKE15 | Active | 1998 |
| Middle Peshtigo-Thunder Rivers PWS Plan - Nine Key Element Plan | NKE16 | Active | 1998 |
| Osceola Creek PWS Plan - Nine Key Element Plan | NKE17 | Active | 1996 |
| Pensaukee River PWS Plan - Nine Key Element Plan | NKE18 | Active | 1996 |
| Pigeon River PWS Plan - Nine Key Element Plan | NKE19 | Active | 1997 |
| Pine River/Willow Creek PWS Plan - Nine Key Element Plan | NKE20 | Active | 1998 |
| Red River/Sturgeon Bay PWS Plan - Nine Key Element Plan | NKE21 | Active | 1996 |
| Soft Maple and Hay Creek PWS Plan - Nine Key Element Plan | NKE22 | Active | 1996 |
| Spring Brook PWS Plan - Nine Key Element Plan | NKE23 | Active | 1997 |
| St. Croix County Lakes Cluster PWS Plan - Nine Key Element Plan | NKE24 | Active | 1997 |
| Sugar/Honey Creek PWS Plan - Nine Key Element Plan | NKE25 | Active | 1997 |
| Tomorrow/Waupaca River PWS Plan - Nine Key Element Plan | NKE26 | Active | 1995 |
| Upper St. Croix - Eau Clair Rivers PWS Plan - Nine Key Element Plan | NKE27 | Active | 1997 |
| Upper Trempealeau River PWS Plan - Nine Key Element Plan | NKE28 | Active | 1994 |
| Whittlesey Creek PWS Plan - Nine Key Element Plan | NKE29 | Active | 1996 |
| Arrowhead River, Rat River and Daggets Creek PWS Plan - Nine Key Element Plan | NKE38 | Complete | 1993 |
| Bass Lake PWS Plan - Nine Key Element Plan | NKE39 | Complete | 1986 |
| Beaver Creek PWS Plan - Nine Key Element Plan | NKE40 | Complete | 1987 |
| Big Green Lake PWS Plan - Nine Key Element Plan | NKE41 | Complete | 1981 |
| Black Earth Creek PWS Plan - Nine Key Element Plan | NKE42 | Complete | 1989 |
| Cedar Creek PWS Plan - Nine Key Element Plan | NKE43 | Complete | 1993 |
| Crossman Creek - Little Baraboo River PWS Plan - Nine Key Element Plan | NKE44 | Complete | 1985 |
| Dunlap Creek PWS Plan - Nine Key Element Plan | NKE45 | Complete | 1994 |
| East and West Branches of the Milwaukee River PWS Plan - Nine Key Element Plan | NKE46 | Complete | 1989 |
| East River PWS Plan - Nine Key Element Plan | NKE47 | Complete | 1993 |
| Elk Creek PWS Plan - Nine Key Element Plan | NKE48 | Complete | 1979 |
| Galena River PWS Plan - Nine Key Element Plan | NKE49 | Complete | 1979 |
| Hay River PWS Plan - Nine Key Element Plan | NKE50 | Complete | 1979 |
| Kewaunee River PWS Plan - Nine Key Element Plan | NKE51 | Complete | 1984 |
| Kinnickinnic River Milwaukee PWS Plan - Nine Key Element Plan | NKE52 | Complete | 1994 |
| Lake Tomah PWS Plan - Nine Key Element Plan | NKE53 | Complete | 1994 |
| Lake Winnebago East PWS Plan - Nine Key Element Plan | NKE54 | Complete | 1994 |
| Little River PWS Plan - Nine Key Element Plan | NKE55 | Complete | 1986 |
| Lower Big Eau Pleine River PWS Plan -Nine Key Element Plan | NKE56 | Complete | 1993 |
| Lower Black River PWS Plan - Nine Key Element Plan | NKE57 | Complete | 1983 |
| Lower East Branch Pecatonica River PWS Plan - Nine Key Element Plan | NKE58 | Complete | 1992 |
| Lower Eau Claire River PWS Plan - Nine Key Element Plan | NKE59 | Complete | 1985 |
| Lower Grant River PWS Plan - Nine Key Element Plan | NKE60 | Complete | 1991 |
| Lower Manitowoc River PWS Plan - Nine Key Element Plan | NKE61 | Complete | 1979 |
| Lowes Creek PWS Plan - Nine Key Element Plan | NKE62 | Complete | 1993 |
| Menomonee River PWS Plan - Nine Key Element Plan | NKE63 | Complete | 1992 |
| Middle Kickapoo River PWS Plan - Nine Key Element Plan | NKE64 | Complete | 1994 |
| Middle Trempealeau River PWS Plan - Nine Key Element Plan | NKE65 | Complete | 1992 |
| Milwaukee River South PWS Plan - Nine Key Element Plan | NKE66 | Complete | 1991 |
| Minoqua-Woodruff Lakes PWS Plan - Nine Key Element Plan | NKE67 | Complete | 1994 |
| Narrows Creek PWS Plan - Nine Key Element Plan | NKE68 | Complete | 1993 |
| North Branch Milwaukee River PWS Plan - Nine Key Element Plan | NKE69 | Complete | 1989 |
| Oconomowoc River PWS Plan - Nine Key Element Plan | NKE70 | Complete | 1986 |
| Onion River PWS Plan - Nine Key Element Plan | NKE71 | Complete | 1981 |
| Rock Lake PWS Plan - Nine Key Element Plan | NKE72 | Complete | 1997 |
| Root River PWS Plan - Nine Key Element Plan | NKE73 | Complete | 1980 |
| Sevenmile-Silver Creek PWS Plan - Nine Key Element Plan | NKE74 | Complete | 1987 |
| Sheboygan River PWS Plan - Nine Key Element Plan | NKE75 | Complete | 1993 |
| Sixmile-Pheasant Branch PWS Plan - Nine Key Element Plan | NKE76 | Complete | 1980 |
| Spring Creek PWS Plan - Nine Key Element Plan | NKE77 | Complete | 1994 |
| Turtle Creek PWS Plan - Nine Key Element Plan | NKE78 | Complete | 1984 |
| Upper Big Eau Pleine River PWS Plan - Nine Key Element Plan | NKE79 | Complete | 1987 |
| Upper Door PWS Plan - Nine Key Element Plan | NKE80 | Complete | 1987 |
| Upper West Branch Pecatonica River PWS Plan - Nine Key Element Plan | NKE81 | Complete | 1982 |
| Upper Willow River PWS Plan - Nine Key Element Plan | NKE82 | Complete | 1982 |
| Upper Yellow River PWS Plan - Nine Key Element Plan | NKE83 | Complete | 1994 |
| Waumandee Creek PWS Plan - Nine Key Element Plan | NKE84 | Complete | 1990 |
| Yahara-Monona PWS Plan - Nine Key Element Plan | NKE85 | Complete | 1991 |
| Duncan Creek PWS Plan - Nine Key Element Plan | NKE86 | Complete | 1995 |
| Hillsboro Priority PWS Plan - Nine Key Element Plan | NKE87 | Complete | 1995 |
| Muskego-Wind Lakes PWS Plan - Nine Key Element Plan | NKE88 | Complete | 1993 |
| Neenah Creek PWS Plan - Nine Key Element Plan | NKE89 | Complete | 1994 |
| South Fork of the Hay River PWS Plan - Nine Key Element Plan | NKE90 | Complete | 1997 |
| Upper Fox River PWS Plan - Nine Key Element Plan | NKE91 | Complete | 1994 |