Heritage Oaks Subdivision, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 2.66 ppb (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. 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.
Heritage Oaks Subdivision at a glance
Heritage Oaks Subdivision serves about 447 people through 149 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Montgomery County, Missouri. EPA system ID: TX1700121; phone on file: 314-736-4672. 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 up 1.66 ppb from 1 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Heritage Oaks Subdivision is 2.66 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.66 ppb |
| 2022 | 1 ppb |
How Heritage Oaks Subdivision compares
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. Heritage Oaks Subdivision's 2.66 ppb sits at the 79th percentile in Missouri and the 79th nationally (higher means more lead).
Neighbouring systems
14 other systems share Montgomery County; 5 of them have a higher latest lead result than Heritage Oaks Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Montgomery City Pws | 2,811 | 1.49 ppb |
| Wellsville Pws | 1,210 | 2.91 ppb |
| New Florence Pws | 769 | 0 (not detected) |
| Jonesburg Pws | 768 | 1.36 ppb |
| Bellflower Pws | 350 | 4.88 ppb |
| Montgomery County Pwsd 1 Jonesburg | 300 | 6.67 ppb |
| High Hill Pws | 300 | 4.6 ppb |
| Texas Landing Utilities Deerwood | 276 | 0 (not detected) |
| Texas Landing Utilities Goode City | 168 | 0.34 ppb |
| Middletown Pws | 167 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Saint Louis, 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 Heritage Oaks Subdivision 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. Size matters more than most people expect: small vs large water systems.