County · South Dakota
Lawrence County, South Dakota: drinking water records
This overview covers 7 ZIP codes and 42 community water systems in Lawrence County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Spearfish SD4600311 | 13,803 | 420 | 0 | 0 | 3 ppb |
| Mountain Plains 2 Homeowners Assoc SD4602169 | 268 | 0 | 0 | 2 | 1 ppb |
| Rendezvous Ranch SD4602210 | 195 | 60 | 0 | 0 | 1 ppb |
| Walnut Park SD4600316 | 180 | 0 | 0 | 5 | 2 ppb |
| Paradise Water Company LLC SD4602323 | 178 | 0 | 0 | 1 | 1 ppb |
| Spearfish Valley Mobile Estates SD4600625 | 163 | 0 | 0 | 1 | 3 ppb |
| Spearfish Meadows SD4600875 | 87 | 0 | 0 | 1 | 2 ppb |
| Oak Mountain Country Estates SD4602151 | 85 | 0 | 0 | 7 | 1 ppb |
| Lourie Lane Homeowners Assoc SD4600416 | 75 | 0 | 0 | 2 | 1 ppb |
| Shirt Tail Gulch Development SD4602232 | 65 | 0 | 0 | 16 | 1 ppb |
| Meadow Crest Sanitary District SD4602258 | 63 | 0 | 0 | 32 | 1 ppb |
| Pillar Peak SD4602326 | 38 | 0 | 0 | 1 | 6 ppb |
| Bicentennial Trailer Court SD4600426 | 23 | 0 | 0 | 2 | 2 ppb |
| Lead SD4602164 | 2,982 | 0 | 0 | 0 | 1 ppb |
| Deadwood SD4600104 | 1,156 | 0 | 0 | 0 | 2 ppb |
| Whitewood SD4600368 | 879 | 0 | 0 | 0 | 1 ppb |
| Terry Trojan Water District SD4600053 | 400 | 0 | 0 | 0 | 4 ppb |
| Saint Onge Sewer & Water Co SD4600287 | 255 | 0 | 0 | 0 | 2 ppb |
| Boulder Park Water Users Association SD4602005 | 200 | 0 | 0 | 0 | 1 ppb |
| Lantern Estates SD4600315 | 192 | 0 | 0 | 0 | 3 ppb |
| Apple Springs Subdivision SD4602318 | 180 | 0 | 0 | 0 | 2 ppb |
| Whitewood Forest Acres SD4602354 | 160 | 0 | 0 | 0 | 1 ppb |
| Deer Mountain Sanitary District SD4600549 | 125 | 0 | 0 | 0 | 1 ppb |
| Ken'S Trailer Court SD4600314 | 110 | 0 | 0 | 0 | 5 ppb |
| Westfield Addition SD4600521 | 104 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Lawrence County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 57759.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.