Loudoun County, VA · PWSID VA6107350
Loudoun Water - Central System lead service lines
No lead lines reported
Loudoun Water - Central System reported 92,646 service lines and no lead, galvanized-requiring-replacement or unknown lines. That's good news for the service line. Older homes can still have lead solder or brass fixtures inside, so testing is the only sure check.
0% of Loudoun Water - Central System's service lines are lead or galvanized requiring replacement. That's lower than the Virginia average (0.6%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 0%
- Non-lead 100%
Total service lines reported: 92,646. Reported all required service line types. Population served: 334,808; 83,426 connections.
Lead test results
Loudoun Water - Central System's most recent 90th-percentile lead result (Jan 2024–Dec 2026) was 0.5 ppb, below both the 15 ppb action level and the 10 ppb level that takes effect in 2027. This means 90% of homes sampled were at or below that level; individual homes, especially those with lead lines, can be higher.
Lead and Copper Rule 90th-percentile results reported to EPA, in parts per billion. Dashed lines: 15 ppb action level and the 10 ppb level from November 1, 2027.
Lead rule violations
EPA's data lists 1 Lead and Copper Rule violation since 2015 for Loudoun Water - Central System. Health-based violations are treatment failures, such as corrosion control or public education; the rest are missed monitoring or reporting.
| Began | Violation | Status |
|---|---|---|
| Oct 2023 | Missed follow-up or routine lead and copper tap sampling | Returned to compliance |
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Loudoun Water - Central System's main water source is surface water (rivers, lakes or reservoirs). It buys treated water from Fairfax County Water Authority. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Loudoun Water - Central System is responsible for its own service line inventory and replacement program. It sells water to 1 other water system: Town of Leesburg.
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 Loudoun Water - Central System 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 Loudoun County
ZIP codes served
ZIP codes whose center falls inside Loudoun Water - Central System's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
20105201472014820152201642016520166
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Town of Leesburg | 55 | 581 |
| Town of Purcellville | 16 | 0 |
| Town of Round Hill | 2 | 0 |
| Town of Lovettsville | 0 | 0 |
| Town of Hamilton | 1 | 0 |
| Selma Estates | 0 | 0 |
| Elysian Heights | 0 | 0 |
| Aldie Water Company | 0 | 41 |
Check another water system
Questions
Does Loudoun Water - Central System have lead pipes?
Loudoun Water - Central System reported no lead, galvanized-requiring-replacement or unknown service lines among 92,646 lines.
How do I check if my home's service line is lead?
Look up your address on Loudoun Water - Central System'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 Loudoun Water - Central System 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 Loudoun Water - Central System had lead violations?
EPA's data shows 1 Lead and Copper Rule violation since 2015 for Loudoun Water - Central System.
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, "Loudoun Water - Central System lead service lines," https://leadpipemap.com/va/loudoun-water-central-system/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.