Allen Co Rwd 4, KS
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
Allen Co Rwd 4 at a glance
Allen Co Rwd 4 serves about 52 people through 32 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 surface water, in Allen County, Kansas. EPA system ID: KS2000112. Ask the utility on your bill for your address in their service line inventory.
Allen Co Rwd 4's lead record
Against the period ending 2022 (2.2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Allen Co Rwd 4 is 2.2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2022 | 2.2 ppb |
| 2019 | 1.7 ppb |
| 2016 | 2 ppb |
Against other Kansas systems
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. Allen Co Rwd 4's 2 ppb sits at the 62nd percentile in Kansas and the 69th nationally (higher means more lead).
Nearby utilities
13 other systems share Allen County; 3 of them have a higher latest lead result than Allen Co Rwd 4. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Iola, City Of | 5,343 | 7.17 ppb |
| Humboldt, City Of | 1,836 | 1.7 ppb |
| Allen Co Rwd 8 | 736 | 1.5 ppb |
| Gas City, City Of | 501 | 3.4 ppb |
| La Harpe, City Of | 484 | 1.1 ppb |
| Moran, City Of | 467 | 1.3 ppb |
| Allen Co Rwd 15 | 135 | 0 (not detected) |
| Allen Co Rwd 16 | 133 | 2.3 ppb |
| Allen Co Rwd 10 | 125 | 1.1 ppb |
| Allen Co Rwd 13 | 100 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Iola, 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 Allen Co Rwd 4 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.