Duquesne Water Dept, 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.
Who runs the water here
Duquesne Water Dept serves about 5,565 people through 2,110 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 Allegheny County, Pennsylvania. EPA system ID: PA5020012; phone on file: 412-466-8535. 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 Duquesne Water Dept is 2.5 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 2.5 ppb |
| 2018 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Duquesne Water Dept 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. Duquesne Water Dept's reported as 0 (not detected) sits at the 9th percentile in Pennsylvania and the 35th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
36 other systems share Allegheny County; 22 of them have a higher latest lead result than Duquesne Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Pa Amer Water Co-Pittsburgh | 686,000 | 4 ppb |
| Pittsburgh Water & Sewer Auth | 520,000 | 2 ppb |
| West View Water Authority | 200,000 | 0 (not detected) |
| Wilkinsburg-Penn Jt Water Auth | 125,000 | 9.78 ppb |
| Hampton Shaler Water Authority | 61,949 | 1.26 ppb |
| Monroeville Municipal Auth | 48,500 | 1.5 ppb |
| Oakmont Water Authority | 39,901 | 0.46 ppb |
| Moon Twp Muni Auth | 38,000 | 1.87 ppb |
| West Cnty Muni Auth-Mckeesport | 32,644 | 0 (not detected) |
| Plum Boro Muni Auth | 27,500 | 3.7 ppb |
What to do in your house
Look up your address in Duquesne Water Dept'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 Duquesne Water Dept 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. Small systems behave differently: why small systems go over more often.