Greenwood 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.
About Greenwood Waterworks
Greenwood Waterworks serves about 1,079 people through 437 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 Clark County, Wisconsin. EPA system ID: WI6100328. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 2.19 ppb from 2.19 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Greenwood Waterworks is 2.19 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 2.19 ppb |
| 2017 | 0 (not detected) |
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. Greenwood Waterworks's reported as 0 (not detected) sits at the 13th percentile in Wisconsin and the 27th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
11 other systems share Clark County; 9 of them have a higher latest lead result than Greenwood Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Neillsville Waterworks | 2,384 | 1.15 ppb |
| Thorp Waterworks | 1,636 | 11 ppb |
| Loyal Waterworks | 1,308 | 0 (not detected) |
| Owen Waterworks | 936 | 1.8 ppb |
| Dorchester Waterworks | 834 | 0 (not detected) |
| Clark County Rehabilitation & Living Center | 510 | 1.78 ppb |
| Withee Waterworks | 506 | 2.3 ppb |
| Granton Waterworks | 349 | 2.25 ppb |
| Curtiss Waterworks | 346 | 0.64 ppb |
| Grandview Mobile Home Court | 42 | 3.7 ppb |
Next steps for Greenwood, WI
Look up your address in Greenwood 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 Greenwood 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. 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.