Port Perry Service, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). 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
Port Perry Service serves about 800 people through 397 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Perry County, Missouri. EPA system ID: MO4036132; phone on file: 314-464-3964. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 2.19 ppb from 2.19 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Port Perry Service is 3.39 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 2.19 ppb |
| 2022 | 2.19 ppb |
| 2019 | 3.39 ppb |
| 2019 | 3.39 ppb |
| 2016 | 3.13 ppb |
| 2016 | 3.13 ppb |
Where this result ranks
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Port Perry Service's reported as 0 (not detected) sits at the 27th percentile in Missouri and the 25th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
9 other systems share Perry County; 7 of them have a higher latest lead result than Port Perry Service. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Perryville Pws | 8,555 | 1.92 ppb |
| Perry County Pwsd 1 | 2,065 | 0 (not detected) |
| Perry County Pwsd 2 | 750 | 0 (not detected) |
| S K & M Water And Sewer Company | 750 | 6.41 ppb |
| Altenburg Pws | 341 | 3.46 ppb |
| Mill Spring | 250 | 3.51 ppb |
| Lake Kah Tan Da Estates Inc | 158 | 3.46 ppb |
| St Marys Seminary | 60 | 1.71 ppb |
| Farrar Water Assn | 34 | 3.39 ppb |
What to do in your house
Look up your address in Port Perry Service'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 Port Perry Service 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. A zero today does not rule out a jump later - the rules are tightening in 2027.