Masontown Muni Water Works, PA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.07 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.
About Masontown Muni Water Works
Masontown Muni Water Works serves about 3,841 people through 1,875 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 Fayette County, Pennsylvania. EPA system ID: PA5260013; phone on file: 724-583-7731. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Masontown Muni Water Works's lead record
Against the period ending 2022 (1.59 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Masontown Muni Water Works is 1.59 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.07 ppb |
| 2022 | 1.59 ppb |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Masontown Muni Water Works 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. Masontown Muni Water Works's 1.07 ppb sits at the 35th percentile in Pennsylvania and the 56th nationally (higher means more lead).
Neighbouring systems
18 other systems share Fayette County; 6 of them have a higher latest lead result than Masontown Muni Water Works. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mawc Yough Plant | 133,000 | 0 (not detected) |
| North Fayette Cnty Muni Auth | 35,409 | 2.23 ppb |
| Pa-American Water- Uniontown | 23,125 | 1 ppb |
| Pa-American Water Co-Connellsv | 11,425 | 0 (not detected) |
| Muni Auth Of Washington Twp | 9,100 | 2.7 ppb |
| Pa-American Water-Brownsville | 7,844 | 2 ppb |
| Indian Creek Valley Water Auth | 7,000 | 2 ppb |
| Belle Vernon Boro Muni Auth | 6,000 | 1.75 ppb |
| Mountain Water Assn | 3,856 | 1.79 ppb |
| Pleasant Valley Water Auth | 3,630 | 0 (not detected) |
Next steps for Masontown, PA
Test your own tap with a certified lab first-draw sample; Masontown, 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 Masontown 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.