Summers Crossing Subdivision, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 7.08 ppb (monitoring period 2024-2026). 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 Summers Crossing Subdivision
Summers Crossing Subdivision serves about 40 people through 16 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lincoln County, Missouri. EPA system ID: MO6031425; phone on file: 314-393-7241. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 5.92 ppb from 1.16 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Summers Crossing Subdivision is 7.08 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 7.08 ppb |
| 2023 | 1.16 ppb |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 2.39 ppb |
| 2019 | 2.39 ppb |
Against other Missouri systems
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. Summers Crossing Subdivision's 7.08 ppb sits at the 96th percentile in Missouri and the 95th nationally (higher means more lead).
Nearby utilities
30 other systems share Lincoln County; 0 of them have a higher latest lead result than Summers Crossing Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Troy Pws | 15,000 | 1.5 ppb |
| Lincoln County Pwsd 1 | 14,000 | 3.51 ppb |
| Moscow Mills Pws | 4,500 | 0 (not detected) |
| Elsberry Pws | 2,076 | 0 (not detected) |
| Winfield Pws | 1,489 | 1.29 ppb |
| Lincoln County Pwsd 2 | 1,005 | 5.24 ppb |
| Hawk Point Pws | 945 | 3.45 ppb |
| Quail Run Mhp | 897 | 0 (not detected) |
| Glen Meadows | 650 | 0 (not detected) |
| Majestic Lakes | 512 | 1.52 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Troy, MO 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 Summers Crossing Subdivision whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2907.6 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.