Sherwood Waterworks, WI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Sherwood Waterworks at a glance
Sherwood Waterworks serves about 3,114 people through 1,153 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 surface water, in Calumet County, Wisconsin. EPA system ID: WI4080271. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 1.1 ppb from 1.1 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Sherwood Waterworks is 1.8 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 1.1 ppb |
| 2017 | 1.8 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. Sherwood Waterworks's reported as 0 (not detected) sits at the 16th percentile in Wisconsin and the 33rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
9 other systems share Calumet County; 7 of them have a higher latest lead result than Sherwood Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Harrison Utilities-Fka Waverly Sd | 5,500 | 0 (not detected) |
| Chilton Waterworks | 4,191 | 13 ppb |
| Brillion Waterworks | 3,262 | 8.1 ppb |
| New Holstein Waterworks | 3,012 | 3.1 ppb |
| Hilbert Waterworks | 1,176 | 0.84 ppb |
| Stockbridge Waterworks | 680 | 0 (not detected) |
| Forest Junction Pub Util | 487 | 1.3 ppb |
| Lakeview Estates Mhp | 112 | 0.4 ppb |
| Country Aire Mobile Home Court Llc | 98 | 9.65 ppb |
What to do in your house
Look up your address in Sherwood Waterworks'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 Sherwood 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. Small systems behave differently: why small systems go over more often.