Junction City Waterworks, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 0.99 ppb (monitoring period 2023-2023). 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
Junction City Waterworks serves about 416 people through 186 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 Portage County, Wisconsin. EPA system ID: WI7500127. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2020 (1.08 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Junction City Waterworks is 1.08 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0.99 ppb |
| 2020 | 1.08 ppb |
| 2017 | 0.98 ppb |
Where this result ranks
Of the 947 Wisconsin systems with a lead result, the median latest reading is 1.33 ppb; 6 are over 15 ppb right now and 71 have gone over at some point. Junction City Waterworks's 0.99 ppb sits at the 41st percentile in Wisconsin and the 50th nationally (higher means more lead).
Other water systems in Portage County
7 other systems share Portage County; 5 of them have a higher latest lead result than Junction City Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Stevens Point Waterworks | 26,717 | 2.4 ppb |
| Plover Waterworks | 13,486 | 3.8 ppb |
| Whiting Waterworks | 1,743 | 1.2 ppb |
| Amherst Waterworks | 1,119 | 6 ppb |
| Riverview Estates Mhp | 150 | 0.37 ppb |
| Pine Grove Villa | 75 | 0.46 ppb |
| Oak Lane Mobile Home Park | 60 | 1.51 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Junction City, WI 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 Junction City Waterworks 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. The action level is dropping - the 10 ppb rule from 2027.