Wyoming Lead Service Line Replacement Programs
Who pays to replace lead service lines in Wyoming?
Wyoming has no law we found that decides who pays for the private side of a lead service line, so each utility sets its own policy. Wyoming water systems reported 672 lead and 2,742 galvanized lines to EPA (Q3 2026). We list 3 utilities here.
Wyoming water systems reported 672 lead and 2,742 galvanized service lines that must be replaced (EPA, Q3 2026). Below: the state rule on who pays, and every Wyoming utility with at least 500 such lines, a confirmed program, or a recent lead result above 10 ppb.
Federal Lead and Copper Rule Improvements (40 CFR 141 Subpart I)
This state has no law we found that decides who pays for the private side of a lead service line, so each utility sets its own policy. Under the federal rule, utilities must replace every lead line and galvanized line that needs it within ten years of November 1, 2027, but the rule does not make utilities pay for the owner's side. Federal infrastructure money passed through the state revolving fund can pay for it, so many utilities offer free or discounted replacement, especially for low-income owners.
Mandatory? No state owner mandate found; the federal rule requires most utilities to replace all lead and galvanized-requiring-replacement lines by 2037.
Funding: State Drinking Water State Revolving Fund (federal lead service line money).
For fiscal year 2026, EPA allotted $27,456,000 to Wyoming for lead service line replacement through the Drinking Water State Revolving Fund, and at least $13,453,440 of it must go out as grants or forgivable loans. Compare every state.
Water testing: Wyoming's list of state-certified drinking water labs. All states.
Sources: epa.gov
| Utility | Lead | Galv. | Program |
|---|---|---|---|
| Laramie City of Laramie | 0 | 924 | Not confirmed |
| Sheridan City of Sheridan | 397 | 392 | Not confirmed |
| Cheyenne Cheyenne Board of Public Utilities | 82 | 0 | Not confirmed |
Compare: lead lines in every state · cities with the most lead pipes · systems over the lead action level · free programs in Wyoming
Wyoming water systems over the new lead action level
2 Wyoming water systems reported a 90th-percentile lead result above 10 parts per billion, the action level that takes effect under the federal Lead and Copper Rule Improvements in November 2027. Results above 15 ppb, the current action level, are in bold red. See every state.
| Water system | Population | Lead, 90th pct. (ppb) | Period |
|---|---|---|---|
| Cheyenne Cheyenne Board of Public Utilities · Laramie County | 64,165 | 15 | 2025-01 to 2025-12 |
| Opal Town of Opal · Lincoln County | 65 | 15 | 2026-01 to 2026-06 |
Smaller Wyoming water systems with lead lines
These systems reported fewer than 500 lead and galvanized lines, so they don't have their own page yet. The 30 with the most lines are shown, out of 60. If you're served by one, ask the utility about its replacement plan and use the state rule above.
| Water system | Lead | Galv. | Unknown |
|---|---|---|---|
| Wheatland Town of Wheatland · Platte County | 0 | 299 | 12 |
| Powell City of Powell · Park County | 0 | 183 | 2,654 |
| Casper City of Casper · Natrona County | 146 | 0 | 1,965 |
| Riverton City of Riverton · Fremont County | 0 | 113 | 483 |
| Yellowstone Nt Ynp - Lake Village · Teton County | 0 | 108 | 321 |
| Encampment Town of Encampment · Carbon County | 0 | 91 | 34 |
| Cheyenne Usaf F.E. Warren AFB · Laramie County | 0 | 83 | 291 |
| Guernsey Town of Guernsey · Platte County | 0 | 79 | 119 |
| Riverton Jade MHC · Fremont County | 0 | 72 | 0 |
| Yellowstone Np Ynp-Mammoth Hot Springs · Park County | 0 | 61 | 207 |
| Rawlins City of Rawlins Water Supply · Carbon County | 0 | 56 | 3,675 |
| Marbleton Town of Marbleton · Sublette County | 0 | 36 | 224 |
| Cokeville Town of Cokeville · Lincoln County | 0 | 21 | 71 |
| Manville Town of Manville · Niobrara County | 18 | 1 | 38 |
| Sundance City of Sundance · Crook County | 0 | 18 | 446 |
| Green River Emerald River Estates · Sweetwater County | 0 | 17 | 0 |
| Jackson Town of Jackson · Teton County | 0 | 16 | 1,139 |
| Cowley Town of Cowley · Big Horn County | 2 | 11 | 106 |
| Rock Springs City of Rock Springs · Sweetwater County | 1 | 11 | 45 |
| Lyman Town of Lyman · Uinta County | 0 | 12 | 416 |
| Glenrock Town of Glenrock · Converse County | 0 | 11 | 560 |
| Sheridan Veterans Administration Medical Center · Sheridan County | 0 | 11 | 9 |
| Greybull Town of Greybull · Big Horn County | 0 | 11 | 653 |
| Sinclair Town of Sinclair · Carbon County | 0 | 10 | 96 |
| Yellowstone Np Ynp-Old Faithful · Teton County | 0 | 10 | 206 |
| Saratoga Town of Saratoga · Carbon County | 0 | 9 | 325 |
| Thermopolis Town of Thermopolis · Hot Springs County | 9 | 0 | 1,085 |
| Douglas City of Douglas · Converse County | 5 | 3 | 660 |
| Rock River Town of Rock River · Albany County | 0 | 7 | 32 |
| Byron Town of Byron · Big Horn County | 0 | 7 | 29 |
Common questions
Who pays to replace lead service lines in Wyoming?
This state has no law we found that decides who pays for the private side of a lead service line, so each utility sets its own policy. Under the federal rule, utilities must replace every lead line and galvanized line that needs it within ten years of November 1, 2027, but the rule does not make utilities pay for the owner's side. Federal infrastructure money passed through the state revolving fund can pay for it, so many utilities offer free or discounted replacement, especially for low-income owners.
Is lead service line replacement mandatory in Wyoming?
No state owner mandate found; the federal rule requires most utilities to replace all lead and galvanized-requiring-replacement lines by 2037.
How many lead service lines are in Wyoming?
Water systems in Wyoming reported 672 lead service lines, 2,742 galvanized lines that need replacement and 70,580 lines of unknown material to EPA (Q3 2026), across 69 reporting systems.
Where can I get help paying in Wyoming?
Start with your water utility's program; the table on this page shows what we've confirmed. State money flows through: State Drinking Water State Revolving Fund (federal lead service line money). If your utility has no program, see our guide to paying for replacement.