North Shore Water Commission, WI
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 11 ppb (monitoring period 2018-2018). 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.
Who runs the water here
North Shore Water Commission serves about 35,598 people through 13,184 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 Milwaukee County, Wisconsin. EPA system ID: WI2413515. Ask the utility on your bill for your address in their service line inventory.
North Shore Water Commission's lead record
The highest 90th-percentile result EPA holds for North Shore Water Commission is 11 ppb across 1 monitoring period, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2018 | 11 ppb over 10 |
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. North Shore Water Commission's 11 ppb sits at the 98th percentile in Wisconsin and the 98th nationally (higher means more lead).
Other water systems in Milwaukee County
16 other systems share Milwaukee County; 1 of them has a higher latest lead result than North Shore Water Commission. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Milwaukee Waterworks | 626,000 | 5.3 ppb |
| West Allis Waterworks | 63,240 | 2.4 ppb |
| Wauwatosa Waterworks | 49,064 | 8.4 ppb |
| Oak Creek Waterworks | 32,104 | 2 ppb |
| Franklin Water Utility | 22,500 | 3 ppb |
| South Milwaukee Waterworks | 21,340 | 7.7 ppb |
| Cudahy Waterworks | 18,659 | 13 ppb |
| Greendale Waterworks | 14,393 | 0.32 ppb |
| Whitefish Bay Waterworks | 14,272 | 4.7 ppb |
| Shorewood Waterworks | 13,535 | 3.2 ppb |
Next steps for Milwaukee, WI
Test your own tap with a certified lab first-draw sample; Milwaukee, 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 North Shore Water Commission 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. See what changes at 10 ppb in 2027.