Hanover Muni Water Works, PA
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
Hanover Muni Water Works at a glance
Hanover Muni Water Works serves about 40,900 people through 18,027 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 York County, Pennsylvania. EPA system ID: PA7670076; phone on file: 717-632-5152. They can tell you what your service line is made of and whether they pay to replace it.
Hanover Muni Water Works's lead record
Against the period ending 2022 (3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Hanover Muni Water Works is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2022 | 3 ppb |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
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. Hanover Muni Water Works's 2 ppb sits at the 51st percentile in Pennsylvania and the 73rd nationally (higher means more lead).
Nearby utilities
43 other systems share York County; 5 of them have a higher latest lead result than Hanover Muni Water Works. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| York Water Co | 206,762 | 3 ppb |
| Dover Twp Water Sys | 21,097 | 4.9 ppb |
| Red Lion Municipal Authority | 15,882 | 1 ppb |
| Dallastown Yoe Water Auth | 12,300 | 0 (not detected) |
| West Manchester Twp Auth | 9,960 | 2 ppb |
| Dillsburg Area Authority | 8,962 | 0 (not detected) |
| Veolia Newberry System | 6,480 | 0 (not detected) |
| Stewartstown Boro Water Auth | 5,206 | 0 (not detected) |
| Shrewsbury Borough | 4,727 | 2 ppb |
| New Freedom Boro Water Auth | 4,464 | 0 (not detected) |
Next steps for Hanover, PA
Test your own tap with a certified lab first-draw sample; Hanover, 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 Hanover Muni Water Works 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. The action level is dropping - the 10 ppb rule from 2027.