Starling Mhp, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 5.15 ppb (monitoring period 2024-2024). 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.
Starling Mhp at a glance
Starling Mhp serves about 342 people through 171 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Jefferson County, Missouri. EPA system ID: MO6046374; phone on file: 573-340-5810. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 5.15 ppb from 0 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Starling Mhp is 5.15 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 5.15 ppb |
| 2024 | 0 (not detected) |
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. Starling Mhp's 5.15 ppb sits at the 92nd percentile in Missouri and the 91st nationally (higher means more lead).
Other water systems in Jefferson County
65 other systems share Jefferson County; 7 of them have a higher latest lead result than Starling Mhp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Jefferson Co Cons Pwsd C 1 | 37,000 | 0 (not detected) |
| Jefferson County Pwsd 1 | 21,113 | 7.25 ppb |
| Jefferson County Pwsd 3 | 17,000 | 0 (not detected) |
| Jefferson County Pwsd 2 | 16,548 | 0 (not detected) |
| Festus Pws | 13,000 | 0 (not detected) |
| Jefferson County Pwsd 10 | 10,000 | 3.86 ppb |
| Jefferson County Pwsd 5 | 8,000 | 1.13 ppb |
| Jefferson County Pwsd 6 | 7,500 | 2.93 ppb |
| Desoto Pws | 6,400 | 1.46 ppb |
| Jefferson County Pwsd 7 | 6,100 | 1.7 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Arnold, 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 Starling Mhp 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. The action level is dropping - the 10 ppb rule from 2027.