Annas House, WI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). 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.
Who runs the water here
Annas House serves about 32 people through 1 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Brown County, Wisconsin. EPA system ID: WI4051141. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 1.35 ppb from 1.35 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Annas House is 1.35 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 1.35 ppb |
| 2019 | 0 (not detected) |
| 2016 | 0.38 ppb |
Against other Wisconsin systems
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. Annas House's reported as 0 (not detected) sits at the 1st percentile in Wisconsin and the 1st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
21 other systems share Brown County; 16 of them have a higher latest lead result than Annas House. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Green Bay Waterworks | 107,369 | 2.5 ppb |
| De Pere Waterworks Sa 1 | 25,660 | 0.66 ppb |
| Howard Waterworks | 21,133 | 1.2 ppb |
| Ashwaubenon Waterworks | 17,730 | 3.4 ppb |
| Bellevue Waterworks | 16,715 | 2.7 ppb |
| Allouez Waterworks | 13,923 | 5.9 ppb |
| Ledgeview Tn Sanitary Dist 2 | 7,602 | 2.1 ppb |
| Lawrence Waterworks | 5,398 | 0 (not detected) |
| Suamico Waterworks | 4,697 | 1.1 ppb |
| Pulaski Waterworks | 4,040 | 0.81 ppb |
What to do in your house
Look up your address in Annas House'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 Annas House 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. A zero today does not rule out a jump later - the rules are tightening in 2027.