Chambersburg Boro Water Sys, PA
Lead detected, under the action levels
Latest 90th-percentile lead: 4.7 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Chambersburg Boro Water Sys at a glance
Chambersburg Boro Water Sys serves about 31,048 people through 9,295 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Franklin County, Pennsylvania. EPA system ID: PA7280005; phone on file: 717-261-6580. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 2.59 ppb from 2.11 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Chambersburg Boro Water Sys is 10.9 ppb across 9 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.7 ppb |
| 2023 | 2.11 ppb |
| 2022 | 1.76 ppb |
| 2021 | 1.97 ppb |
| 2020 | 4.1 ppb |
| 2019 | 5.69 ppb |
| 2019 | 10.9 ppb over 10 |
| 2018 | 8.2 ppb |
| 2016 | 0 (not detected) |
Where this result ranks
Of the 516 Pennsylvania systems with a lead result, the median latest reading is 2 ppb; 143 are over 15 ppb right now and 156 have gone over at some point. Chambersburg Boro Water Sys's 4.7 ppb sits at the 66th percentile in Pennsylvania and the 90th nationally (higher means more lead).
Nearby utilities
29 other systems share Franklin County; 4 of them have a higher latest lead result than Chambersburg Boro Water Sys. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Guilford Water Auth | 28,135 | 0 (not detected) |
| Boro Of Waynesboro | 13,200 | 6 ppb |
| Bear Valley Joint Auth | 12,589 | 3.89 ppb |
| Washington Twp Muni Auth | 6,134 | 1.84 ppb |
| Greencastle Area Water Auth | 5,500 | 5.21 ppb |
| Franklin System York Water | 4,400 | 2 ppb |
| Mercersburg Muni Water Auth | 2,350 | - |
| Mont Alto Municipal Authority | 1,705 | - |
| Antrim Township Municipal Auth | 1,149 | - |
| Zullinger Water System Wtma | 1,080 | - |
Your move
Test your own tap with a certified lab first-draw sample; Chambersburg, PA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Chambersburg Boro Water Sys whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.