Marion Co Rwd 4, KS
Lead detected, under the action levels
Latest 90th-percentile lead: 1.3 ppb (monitoring period 2026-2026). 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.
Who runs the water here
Marion Co Rwd 4 serves about 1,398 people through 889 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Marion County, Kansas. EPA system ID: KS2011511; phone on file: 620-947-2434. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Marion Co Rwd 4's lead record
Against the period ending 2025 (1.9 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Marion Co Rwd 4 is 3 ppb across 18 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.3 ppb |
| 2025 | 1.9 ppb |
| 2025 | 2.6 ppb |
| 2024 | 1.9 ppb |
| 2024 | 2.4 ppb |
| 2023 | 2.6 ppb |
| 2022 | 0 (not detected) |
| 2021 | 1.3 ppb |
| 2021 | 1.3 ppb |
| 2020 | 1.5 ppb |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2018 | 1.9 ppb |
| 2017 | 3 ppb |
| 2017 | 2.5 ppb |
| 2016 | 2.1 ppb |
| 2016 | 0 (not detected) |
Where this result ranks
Of the 832 Kansas systems with a lead result, the median latest reading is 1.4 ppb; 2 are over 15 ppb right now and 35 have gone over at some point. Marion Co Rwd 4's 1.3 ppb sits at the 48th percentile in Kansas and the 60th nationally (higher means more lead).
Nearby utilities
11 other systems share Marion County; 5 of them have a higher latest lead result than Marion Co Rwd 4. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hillsboro, City Of | 2,740 | 3.3 ppb |
| Marion, City Of | 1,902 | 0 (not detected) |
| Peabody, City Of | 932 | 0.5 ppb |
| Marion Co Rwd 1 | 780 | 0 (not detected) |
| Goessel, City Of | 558 | 4.3 ppb |
| Florence, City Of | 387 | 4.3 ppb |
| Marion Co Improvement Dist 2 | 234 | 0 (not detected) |
| Burns, City Of | 232 | 2.3 ppb |
| Marion Co Rwd 2 | 175 | 1.92 ppb |
| Lehigh, City Of | 159 | 0.92 ppb |
Next steps for Hillsboro, KS
Test your own tap with a certified lab first-draw sample; Hillsboro, KS 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 Marion Co Rwd 4 whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1700 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. 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.