Two Rivers Waterworks, WI
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 13 ppb (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. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Two Rivers Waterworks at a glance
Two Rivers Waterworks serves about 11,270 people through 4,174 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Manitowoc County, Wisconsin. EPA system ID: WI4360436. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
Against the period ending 2024 (13 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Two Rivers Waterworks is 21 ppb across 7 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 13 ppb over 10 |
| 2024 | 13 ppb over 10 |
| 2024 | 11 ppb over 10 |
| 2019 | 15 ppb over 10 |
| 2018 | 14 ppb over 10 |
| 2018 | 13 ppb over 10 |
| 2017 | 21 ppb over 15 |
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. Two Rivers Waterworks's 13 ppb sits at the 99th percentile in Wisconsin and the 98th nationally (higher means more lead).
Neighbouring systems
13 other systems share Manitowoc County; 0 of them have a higher latest lead result than Two Rivers Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Manitowoc Waterworks | 34,500 | 7.7 ppb |
| Kiel Waterworks | 3,932 | 0.77 ppb |
| Cleveland Waterworks | 1,524 | 6.3 ppb |
| Mishicot Waterworks | 1,432 | 1.9 ppb |
| Reedsville Waterworks | 1,200 | 2.6 ppb |
| Valders Waterworks | 954 | 6.8 ppb |
| Whitelaw Waterworks | 757 | 3.1 ppb |
| St Nazianz Waterworks | 705 | 1.4 ppb |
| Maribel Waterworks | 355 | 0.99 ppb |
| Kellnersville Waterworks | 301 | 3.5 ppb |
Next steps for Two Rivers, WI
Test your own tap with a certified lab first-draw sample; Two Rivers, WI may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Two Rivers 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. This system is in the band the 2027 10 ppb rule changes.