Cranberry Twp Wtp, PA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.53 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.
Cranberry Twp Wtp at a glance
Cranberry Twp Wtp serves about 42,000 people through 10,864 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 Butler County, Pennsylvania. EPA system ID: PA5100094; phone on file: 724-776-4806. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cranberry Twp Wtp is 0.53 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.53 ppb |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Cranberry Twp Wtp 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. Cranberry Twp Wtp's 0.53 ppb sits at the 26th percentile in Pennsylvania and the 44th nationally (higher means more lead).
Other water systems in Butler County
30 other systems share Butler County; 7 of them have a higher latest lead result than Cranberry Twp Wtp. 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 Butler | 43,286 | 2 ppb |
| Slippery Rock Muni Auth | 15,778 | 0.55 ppb |
| Municipal Water Auth Adams Twp | 8,700 | 0.59 ppb |
| Harmony Boro Water Auth | 6,669 | 2.2 ppb |
| Zelienople Boro | 4,123 | 6.04 ppb |
| Petroleum Valley Rwa | 3,800 | 0 (not detected) |
| Seven Fields Boro Water Dept | 3,100 | - |
| Evans City Borough | 1,990 | - |
| Mars Borough Water Works | 1,956 | - |
| Chicora Boro Water Supply | 1,100 | - |
Your move
Test your own tap with a certified lab first-draw sample; Cranberry Twp, 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 Cranberry Twp Wtp 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.