10 4 Water System, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
About 10 4 Water System
10 4 Water System serves about 160 people through 88 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Morgan County, Missouri. EPA system ID: MO5031436; phone on file: 573-372-3916. They can tell you what your service line is made of and whether they pay to replace it.
10 4 Water System's lead record
That is down 1.08 ppb from 1.08 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for 10 4 Water System is 1.08 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 1.08 ppb |
| 2023 | 1.08 ppb |
| 2022 | 0.83 ppb |
| 2020 | 0.83 ppb |
| 2019 | 0.74 ppb |
| 2017 | 0.74 ppb |
| 2016 | 0.78 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. 10 4 Water System's reported as 0 (not detected) sits at the 12th percentile in Missouri and the 13th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
13 other systems share Morgan County; 10 of them have a higher latest lead result than 10 4 Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Versailles Pws | 2,539 | 1.27 ppb |
| Morgan County Pwsd # 2 | 1,298 | 1.91 ppb |
| Stover Pws | 1,094 | 1.81 ppb |
| Laurie Pws | 990 | 5.03 ppb |
| Millstone Luxury Condominiums | 400 | 0.53 ppb |
| Timberlake Master Assn Inc | 300 | 0.83 ppb |
| Blue Anchor Bay Condominiums | 250 | 0 (not detected) |
| Barnett Pws | 207 | 3.42 ppb |
| Syracuse Pws | 172 | 5.6 ppb |
| Johnson Bay Subdivision | 126 | 2.5 ppb |
Your move
Look up your address in 10 4 Water System'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 10 4 Water System 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.