Boone County, AR · PWSID AR0000061
Diamond City Water lead service lines
74 lead or galvanized lines to replace
Diamond City Water reported 0 lead and 74 galvanized-requiring-replacement service lines out of 575 in its inventory. That's 13% of all its lines. Another 23 (4.0%) are still listed as unknown material.
Ranks #7 of 18 Arkansas systems with confirmed lead lines, and #2,202 nationally.
13% of Diamond City Water's service lines are lead or galvanized requiring replacement. That's higher than the Arkansas average (0.9%) and higher than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 13%
- Unknown 4.0%
- Non-lead 83%
Total service lines reported: 575. Reported all required service line types. Population served: 1,290; 516 connections.
The most recent lead sampling period in EPA data (starting 01-JAN-2000) did not exceed the 15 ppb action level. Results are a 90th percentile across sampled homes, so individual homes can still be higher.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 74 in 2025 Q1 to 74 in 2026 Q3: no change. Lines of unknown material went from 23 to 23, no change.
Quarterly counts reported to EPA. A drop usually means lines were replaced or confirmed non-lead; a rise usually means more lines were identified. Replacement progress rankings.
Lead rule violations
EPA's data lists 1 Lead and Copper Rule violation since 2015 for Diamond City Water. Health-based violations are treatment failures, such as corrosion control or public education; the rest are missed monitoring or reporting.
| Began | Violation | Status |
|---|---|---|
| Jun 2016 | Lead consumer notice not delivered or reported | Returned to compliance |
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Diamond City Water's main water source is purchased surface water. It buys treated water from Ozark MTN Regional Pwa. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Diamond City Water is responsible for its own service line inventory and replacement program.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Diamond City Water whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Boone County
ZIP codes served
ZIP codes whose center falls inside Diamond City Water's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
72630
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Harrison Waterworks | 0 | 6,771 |
| SW Boone County Water Assoc | 0 | 854 |
| Valley Springs Waterworks | 0 | 0 |
| Bergman Waterworks | 0 | 1,251 |
| Krooked Kreek Water Assn | 0 | 0 |
| Omaha Waterworks | 0 | 0 |
| Cottonwood Water Association | 0 | 328 |
| Bellefonte Water | 0 | 305 |
Check another water system
Questions
Does Diamond City Water have lead pipes?
Yes. Diamond City Water reported 0 lead service lines and 74 galvanized lines that must be replaced, out of 575 total. 23 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on Diamond City Water's official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will Diamond City Water replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has Diamond City Water had lead violations?
EPA's data shows 1 Lead and Copper Rule violation since 2015 for Diamond City Water.
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "Diamond City Water lead service lines," https://leadpipemap.com/ar/diamond-city-water/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.