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Which South Dakota Areas Have the Most Galvanized Pipe Risk?
The 45 South Dakota areas with the highest share of confirmed galvanized service lines requiring replacement, out of 45 areas with enough data for a reliable estimate. Galvanized steel isn't lead itself, but a line installed downstream of a lead gooseneck or connector can leach lead particles trapped in its rough interior even after the original lead pipe is gone — federal guidance treats it with the same urgency as a confirmed lead line.
| # | Area | Galvanized | % of addresses |
|---|---|---|---|
| 1 | Mobridge | 193 | 11.2% |
| 2 | Garretson | 59 | 5.9% |
| 3 | Watertown | 386 | 3.6% |
| 4 | Sturgis | 88 | 2.3% |
| 5 | Spearfish | 111 | 2.1% |
| 6 | Yankton | 102 | 1.4% |
| 7 | Vermillion | 52 | 1.4% |
| 8 | Rapid City | 316 | 1.0% |
| 9 | Lead | 14 | 0.7% |
| 10 | Canton | 12 | 0.6% |
| 11 | Webster | 6 | 0.5% |
| 12 | Winner | 8 | 0.4% |
| 13 | Huron | 21 | 0.4% |
| 14 | Mitchell | 25 | 0.3% |
| 15 | Pierre | 17 | 0.3% |
| 16 | Britton | 3 | 0.3% |
| 17 | Sisseton | 3 | 0.2% |
| 18 | Black Hawk | 4 | 0.2% |
| 19 | Beresford | 3 | 0.2% |
| 20 | Arlington | 2 | 0.2% |
| 21 | Elk Point | 2 | 0.2% |
| 22 | Volga | 2 | 0.1% |
| 23 | Sioux Falls | 79 | 0.1% |
| 24 | Hot Springs | 2 | 0.1% |
| 25 | Custer | 1 | 0.1% |
| 26 | Lennox | 1 | 0.1% |
| 27 | Belle Fourche | 1 | 0.0% |
| 28 | Brookings | 1 | 0.0% |
| 29 | Aberdeen | 0 | 0.0% |
| 30 | Box Elder | 0 | 0.0% |
| 31 | Chamberlain | 0 | 0.0% |
| 32 | Dakota Dunes | 0 | 0.0% |
| 33 | Dell Rapids | 0 | 0.0% |
| 34 | Eagle Butte | 0 | 0.0% |
| 35 | Fort Pierre | 0 | 0.0% |
| 36 | Harrisburg | 0 | 0.0% |
| 37 | Hartford | 0 | 0.0% |
| 38 | Madison | 0 | 0.0% |
| 39 | Milbank | 0 | 0.0% |
| 40 | North Sioux City | 0 | 0.0% |
| 41 | Platte | 0 | 0.0% |
| 42 | Redfield | 0 | 0.0% |
| 43 | Summerset | 0 | 0.0% |
| 44 | Tea | 0 | 0.0% |
| 45 | Wagner | 0 | 0.0% |