Petroleum Valley Rwa, PA
Exceeded the action level in the past
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 result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Petroleum Valley Rwa
Petroleum Valley Rwa serves about 3,800 people through 1,290 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 groundwater, in Butler County, Pennsylvania. EPA system ID: PA5100147; phone on file: 724-216-3098. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 2.67 ppb from 2.67 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Petroleum Valley Rwa is 27 ppb across 5 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2023 | 2.67 ppb |
| 2022 | 3.49 ppb |
| 2019 | 21.6 ppb over 15 |
| 2018 | 27 ppb over 15 |
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. Petroleum Valley Rwa's reported as 0 (not detected) sits at the 4th percentile in Pennsylvania and the 34th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
30 other systems share Butler County; 8 of them have a higher latest lead result than Petroleum Valley Rwa. 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 |
| Cranberry Twp Wtp | 42,000 | 0.53 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 |
| 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; Petrolia, 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 Petroleum Valley Rwa whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 3000 ppb (copper action level 1,300 ppb).
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. More in what a past exceedance means today.