New Glarus 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.
Who runs the water here
New Glarus Waterworks serves about 2,348 people through 869 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 Green County, Wisconsin. EPA system ID: WI1230084. Ask the utility on your bill for your address in their service line inventory.
New Glarus Waterworks's lead record
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for New Glarus Waterworks is 1.25 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 1.2 ppb |
| 2018 | 0.47 ppb |
| 2017 | 0.24 ppb |
| 2016 | 1.25 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. New Glarus Waterworks's reported as 0 (not detected) sits at the 16th percentile in Wisconsin and the 31st 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 Green County; 9 of them have a higher latest lead result than New Glarus Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Monroe Waterworks | 10,780 | 4.7 ppb |
| Brodhead Waterworks | 3,216 | 1.02 ppb |
| Belleville Waterworks | 2,712 | 1.5 ppb |
| Brooklyn Waterworks | 1,524 | 0.78 ppb |
| Monticello Waterworks | 1,217 | 0.25 ppb |
| Albany Waterworks | 1,018 | 0.56 ppb |
| Pleasant View Nursing Home | 260 | 4.3 ppb |
| Browntown Waterworks | 256 | 2.48 ppb |
| Van-Gogh Homes Llc | 46 | 5.15 ppb |
Your move
Look up your address in New Glarus 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 New Glarus 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Small systems behave differently: why small systems go over more often.