Lodi Waterworks, WI
Above the federal action level
Latest 90th-percentile lead: 18 ppb (monitoring period 2022-2022). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
About Lodi Waterworks
Lodi Waterworks serves about 3,146 people through 1,356 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 Columbia County, Wisconsin. EPA system ID: WI1110100. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is up 11.9 ppb from 6.1 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Lodi Waterworks is 18 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2022 | 18 ppb over 15 |
| 2021 | 6.1 ppb |
| 2020 | 6 ppb |
| 2017 | 10 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. Lodi Waterworks's 18 ppb sits at the 100th percentile in Wisconsin and the 99th nationally (higher means more lead).
Nearby utilities
22 other systems share Columbia County; 0 of them have a higher latest lead result than Lodi Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Portage Waterworks | 10,437 | 6.2 ppb |
| Columbus Utilities | 5,173 | 8.88 ppb |
| Wisconsin Dells Waterworks | 3,232 | 1.7 ppb |
| Poynette Waterworks | 2,520 | 3.05 ppb |
| Pardeeville Waterworks | 2,151 | 1.7 ppb |
| Harmony Grove San Dist | 1,950 | 3.2 ppb |
| Randolph Water Dept | 1,800 | 1.3 ppb |
| Fall River Waterworks | 1,793 | 0.93 ppb |
| Rio Waterworks | 1,095 | 1.4 ppb |
| Arlington Waterworks | 946 | 2 ppb |
Your move
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Lodi 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.