East Petersburg Borough, PA
Lead detected, under the action levels
Latest 90th-percentile lead: 5.9 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.
Who runs the water here
East Petersburg Borough serves about 6,215 people through 1,742 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Lancaster County, Pennsylvania. EPA system ID: PA7360135; phone on file: 717-696-5416. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is up 1.9 ppb from 4 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for East Petersburg Borough is 5.9 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 5.9 ppb |
| 2022 | 4 ppb |
| 2019 | 4 ppb |
| 2016 | 5.2 ppb |
Against other Pennsylvania systems
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. East Petersburg Borough's 5.9 ppb sits at the 68th percentile in Pennsylvania and the 93rd nationally (higher means more lead).
Neighbouring systems
92 other systems share Lancaster County; 13 of them have a higher latest lead result than East Petersburg Borough. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Lancaster | 120,000 | 7 ppb |
| Columbia Water Co | 25,200 | 1 ppb |
| Ephrata Area Joint Authority | 24,500 | 1.52 ppb |
| East Hempfield Water Auth | 20,988 | 8 ppb |
| Elizabethtown Area Water | 19,000 | 3 ppb |
| Mt Joy Boro Auth | 15,261 | 4 ppb |
| Lititz Boro | 9,397 | 7 ppb |
| Warwick Twp Lititz Sys | 8,561 | 1 ppb |
| New Holland Borough | 8,490 | 0 (not detected) |
| Millersville Univ | 7,950 | 3 ppb |
Your move
Test your own tap with a certified lab first-draw sample; East Petersburg, 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 East Petersburg Borough 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.