W G Murray Development Center, IL
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
W G Murray Development Center serves about 290 people through 1 service connections, which makes it a very small system under EPA's size classes. It is owned by the state and draws surface water, in Marion County, Illinois. EPA system ID: IL1215510; phone on file: 618-532-1811. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for W G Murray Development Center is 3.87 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 3.87 ppb |
| 2016 | 0 (not detected) |
Against other Illinois systems
Of the 1,744 Illinois systems with a lead result, the median latest reading is 0 ppb; 22 are over 15 ppb right now and 152 have gone over at some point. W G Murray Development Center's reported as 0 (not detected) sits at the 13th percentile in Illinois and the 18th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
16 other systems share Marion County; 5 of them have a higher latest lead result than W G Murray Development Center. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Centralia | 12,182 | 2.8 ppb |
| Salem | 7,905 | 2.1 ppb |
| Raccoon Water Company | 7,080 | 0 (not detected) |
| North East Marion County Water Cmpny | 3,220 | 0 (not detected) |
| Fmc Water Company | 2,945 | 0 (not detected) |
| Odin | 2,543 | 0 (not detected) |
| Sandoval | 1,422 | 10 ppb |
| Walnut Hill | 1,180 | 0 (not detected) |
| Wamac | 1,030 | 2.4 ppb |
| Kinmundy | 940 | 0 (not detected) |
Your move
Look up your address in W G Murray Development Center'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 W G Murray Development Center 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.