Colonial Gardens Homes, WI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Colonial Gardens Homes at a glance
Colonial Gardens Homes serves about 48 people through 31 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Fond Du Lac County, Wisconsin. EPA system ID: WI4200484. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Colonial Gardens Homes is 0.69 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2018 | 0.69 ppb |
How Colonial Gardens Homes compares
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. Colonial Gardens Homes's reported as 0 (not detected) sits at the 2nd percentile in Wisconsin and the 3rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
14 other systems share Fond Du Lac County; 12 of them have a higher latest lead result than Colonial Gardens Homes. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Fond Du Lac Waterworks | 44,678 | 6.1 ppb |
| Ripon Water Utility | 7,716 | 3.5 ppb |
| North Fond Du Lac Waterworks | 5,414 | 9.1 ppb |
| Campbellsport Waterworks | 1,825 | 1.12 ppb |
| Oakfield Waterworks | 1,058 | 0 (not detected) |
| Ashwood Grove Edgewater | 1,046 | 2.4 ppb |
| Fond Du Lac Tn Water Utility | 980 | 3.6 ppb |
| Brandon Waterworks | 872 | 6.86 ppb |
| Mount Calvary Waterworks | 478 | 0.45 ppb |
| St Cloud Waterworks | 471 | 1.9 ppb |
What to do in your house
Look up your address in Colonial Gardens Homes's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Colonial Gardens Homes 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. Small systems behave differently: why small systems go over more often.