Richland Center Waterworks, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 4.6 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Richland Center Waterworks at a glance
Richland Center Waterworks serves about 5,100 people through 1,888 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Richland County, Wisconsin. EPA system ID: WI1530068. Ask the utility on your bill for your address in their service line inventory.
Richland Center Waterworks's lead record
Against the period ending 2025 (3.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Richland Center Waterworks is 10 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.6 ppb |
| 2025 | 3.7 ppb |
| 2020 | 10 ppb |
| 2017 | 2.4 ppb |
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. Richland Center Waterworks's 4.6 ppb sits at the 87th percentile in Wisconsin and the 90th nationally (higher means more lead).
Other water systems in Richland County
6 other systems share Richland County; 2 of them have a higher latest lead result than Richland Center Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lone Rock Waterworks | 895 | 1.11 ppb |
| Sextonville Waterworks | 425 | 0.99 ppb |
| Cazenovia Waterworks | 351 | 0 (not detected) |
| Pine Valley Community Village | 225 | 6.03 ppb |
| Yuba Waterworks | 68 | 3.97 ppb |
| Acorn Acres Mhp | 52 | 152.75 ppb |
Next steps for Richland Center, WI
Test your own tap with a certified lab first-draw sample; Richland Center, 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 Richland Center 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. Systems that went over once often dip back under; here is what that means.