Arrow Rock Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 1.65 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.
Who runs the water here
Arrow Rock Pws serves about 235 people through 94 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Saline County, Missouri. EPA system ID: MO2010029; phone on file: 660-837-3608. 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 1.65 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Arrow Rock Pws is 1.65 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.65 ppb |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Arrow Rock Pws 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. Arrow Rock Pws's 1.65 ppb sits at the 64th percentile in Missouri and the 66th nationally (higher means more lead).
Nearby utilities
10 other systems share Saline County; 5 of them have a higher latest lead result than Arrow Rock Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Marshall Pws | 12,934 | 3.76 ppb |
| Saline County Pwsd 3 | 3,000 | 1.03 ppb |
| Slater Pws | 1,835 | 5.5 ppb |
| Sweet Springs Pws | 1,309 | 2.58 ppb |
| Saline County Pwsd 2 | 883 | 1.24 ppb |
| Saline County Pwsd 1 | 480 | 14.5 ppb |
| Malta Bend Pws | 200 | 2.28 ppb |
| Nelson Pws | 158 | 0.55 ppb |
| Miami Pws | 140 | 1.17 ppb |
| Gilliam Pws | 125 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Arrow Rock, 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 Arrow Rock Pws 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. Size matters more than most people expect: small vs large water systems.