Country Vineyard 4, WI
Above the federal action level
Latest 90th-percentile lead: 15.25 ppb (monitoring period 2021-2021). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
Country Vineyard 4 at a glance
Country Vineyard 4 serves about 28 people through 9 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Dane County, Wisconsin. EPA system ID: WI1130603. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is up 14.24 ppb from 1.01 ppb in the period ending 2018. The highest 90th-percentile result EPA holds for Country Vineyard 4 is 15.25 ppb across 2 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 15.25 ppb over 15 |
| 2018 | 1.01 ppb |
How Country Vineyard 4 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. Country Vineyard 4's 15.25 ppb sits at the 99th percentile in Wisconsin and the 99th nationally (higher means more lead).
Neighbouring systems
42 other systems share Dane County; 0 of them have a higher latest lead result than Country Vineyard 4. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Madison Water Utility | 272,000 | 1.8 ppb |
| Sun Prairie Utilities | 39,300 | 2.8 ppb |
| Fitchburg Utility Dist 1 | 29,900 | 2.3 ppb |
| Middleton Waterworks | 23,868 | 4 ppb |
| Waunakee Waterworks | 14,879 | 1.7 ppb |
| Verona Waterworks | 14,030 | 2.86 ppb |
| Stoughton Waterworks | 13,078 | 4.2 ppb |
| Oregon Waterworks | 11,200 | 4.97 ppb |
| Deforest Waterworks | 10,500 | 5.95 ppb |
| Mcfarland Waterworks | 9,676 | 2.1 ppb |
Your move
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Country Vineyard 4 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. Size matters more than most people expect: small vs large water systems.