Franklin County, PA · PWSID PA7280038
Guilford Water Auth lead service lines
45 lead or galvanized lines to replace
Guilford Water Auth reported 2 lead and 43 galvanized-requiring-replacement service lines out of 4,592 in its inventory. That's about 1 in 102 lines. Another 126 (2.7%) are still listed as unknown material.
Ranks #124 of 399 Pennsylvania systems with confirmed lead lines, and #2,727 nationally.
1.0% of Guilford Water Auth's service lines are lead or galvanized requiring replacement. That's lower than the Pennsylvania average (2.9%) and lower than the national average (3.1%).
- Lead <0.1%
- Galvanized (replace) 0.9%
- Unknown 2.7%
- Non-lead 96%
Total service lines reported: 4,592. Reported all required service line types. Population served: 28,135; 11,668 connections.
Lead test results
Guilford Water Auth's most recent 90th-percentile lead result (Jun 2025–Sep 2025) was not detected, 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.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 39 in 2025 Q1 to 45 in 2026 Q3: up 6 (15%). Lines of unknown material went from 69 to 126, up 57 (83%).
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 no Lead and Copper Rule violations for Guilford Water Auth since 2015. That covers testing, reporting, corrosion control and public notice requirements; it isn't a guarantee about any individual home.
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Guilford Water Auth's main water source is groundwater (wells).
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 Guilford Water Auth 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 Franklin County
ZIP codes served
ZIP codes whose center falls inside Guilford Water Auth's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
1723517254
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Chambersburg Boro Water Sys | 38 | 1,949 |
| Boro of Waynesboro | 117 | 5,146 |
| Washington TWP Muni Auth | 1 | 1,858 |
| Greencastle Area Water Auth | 107 | 1,171 |
| Mont Alto Municipal Authority | 86 | 453 |
| Zullinger Water System Wtma | 0 | 272 |
| Dry Run Water Assn | 27 | 0 |
| Pleasant Hall Manor | 30 | 0 |
Check another water system
Questions
Does Guilford Water Auth have lead pipes?
Yes. Guilford Water Auth reported 2 lead service lines and 43 galvanized lines that must be replaced, out of 4,592 total. 126 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on Guilford Water Auth'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 Guilford Water Auth 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 Guilford Water Auth had lead violations?
EPA's data shows no Lead and Copper Rule violations since 2015 for Guilford Water Auth.
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, "Guilford Water Auth lead service lines," https://leadpipemap.com/pa/guilford-water-auth/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.