N Middleton Water Auth, 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.
N Middleton Water Auth at a glance
N Middleton Water Auth serves about 8,455 people through 3,848 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 Cumberland County, Pennsylvania. EPA system ID: PA7210049; phone on file: 717-243-8269. They can tell you what your service line is made of and whether they pay to replace it.
N Middleton Water Auth's lead record
That is down 6 ppb from 8 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for N Middleton Water Auth is 9 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2022 | 8 ppb |
| 2019 | 2 ppb |
| 2016 | 9 ppb |
How N Middleton Water Auth compares
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. N Middleton Water Auth's 2 ppb sits at the 50th percentile in Pennsylvania and the 73rd nationally (higher means more lead).
Other water systems in Cumberland County
26 other systems share Cumberland County; 5 of them have a higher latest lead result than N Middleton Water Auth. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Pa American Water Co West | 105,127 | 0 (not detected) |
| Veolia Mechanicsburg | 45,013 | 3.3 ppb |
| Carlisle Water Trmt Plt | 26,000 | 2.6 ppb |
| Shippensburg Boro Water Auth | 17,800 | 1 ppb |
| South Middleton Twp Water Auth | 11,695 | 1.8 ppb |
| Middlesex Twp Muni Auth | 3,527 | 2.5 ppb |
| Mt Holly Springs Boro Auth | 3,261 | - |
| State Correctional Inst | 2,522 | 12 ppb |
| Newville Boro Water Auth | 2,070 | - |
| Us Army Garrison | 1,700 | 60.8 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Carlisle, 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 N Middleton Water Auth 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.