Pa American Water Co West, PA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Pa American Water Co West
Pa American Water Co West serves about 105,127 people through 41,820 service connections, which makes it a very large system under EPA's size classes. It is under mixed public and private ownership and draws surface water, in Cumberland County, Pennsylvania. EPA system ID: PA7210029; phone on file: 717-774-2420. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Pa American Water Co West is 1.8 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 1 ppb |
| 2019 | 0 (not detected) |
| 2016 | 1.8 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. Pa American Water Co West's reported as 0 (not detected) sits at the 23rd percentile in Pennsylvania and the 40th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Cumberland County
26 other systems share Cumberland County; 8 of them have a higher latest lead result than Pa American Water Co West. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| 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 |
| N Middleton Water Auth | 8,455 | 2 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
Look up your address in Pa American Water Co West's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Pa American Water Co West 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. A zero today does not rule out a jump later - the rules are tightening in 2027.