Columbia Lakes Estates, MI
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (monitoring period 2021-2023). 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.
About Columbia Lakes Estates
Columbia Lakes Estates serves about 700 people through 312 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Ingham County, Michigan. EPA system ID: MI0001565. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2020 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Columbia Lakes Estates is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2 ppb |
| 2020 | 2 ppb |
| 2017 | 3 ppb |
Against other Michigan systems
Of the 1,227 Michigan systems with a lead result, the median latest reading is 1 ppb; 31 are over 15 ppb right now and 109 have gone over at some point. Columbia Lakes Estates's 2 ppb sits at the 64th percentile in Michigan and the 71st nationally (higher means more lead).
Neighbouring systems
21 other systems share Ingham County; 2 of them have a higher latest lead result than Columbia Lakes Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lansing Board Of Water & Light | 166,000 | 0 (not detected) |
| East Lansing, City Of | 33,000 | 0 (not detected) |
| Meridian Township | 25,600 | 0 (not detected) |
| Michigan State University | 12,793 | 2 ppb |
| Mason, City Of | 8,252 | 1.7 ppb |
| Lansing Township | 5,500 | 0 (not detected) |
| Williamston, City Of | 3,917 | 0 (not detected) |
| Leslie, City Of | 1,872 | 6 ppb |
| Webberville, Village Of | 1,503 | 1 ppb |
| Stockbridge, Village Of | 1,252 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Mason, MI 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 Columbia Lakes Estates 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. Size matters more than most people expect: small vs large water systems.