Water Systems Serving Zip Code 94574
Not sure which system is yours? Most residents in ZIP 94574 are likely served by City of St. Helena (population served: 5,386). Check your water bill for your provider name if you're unsure.
Direct EPA ZIP Matches
49 active water systems have this ZIP in EPA records.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| City of St. Helena | 5,386 | Surface Water | 28 | 27 |
| Realm Estate | 25 | Groundwater | 5 | 2 |
| Cairdean Winery | 99 | Groundwater | 2 | 2 |
| Castello Di Amorosa | 833 | Groundwater | 6 | 1 |
| Raymond Vineyard & Cellar | 490 | Groundwater | 5 | 1 |
| Somerston Winery | 28 | Groundwater | 3 | 1 |
| Round Hill Winery | 100 | Groundwater | 2 | 1 |
| Kathryn Hall Winery | 25 | Groundwater | 2 | 1 |
| Alpha Omega Winery | 25 | Groundwater | 2 | 1 |
| Fantesca Winery | 41 | Groundwater | 13 | 0 |
| Dakota Shy Winery | 58 | Groundwater | 12 | 0 |
| Maxville Lake Winery | 36 | Groundwater | 8 | 0 |
| Chappellet Winery | 49 | Groundwater | 7 | 0 |
| Wheeler Farms Winery | 39 | Groundwater | 6 | 0 |
| Robert Keenan Winery | 48 | Groundwater | 5 | 0 |
| Behrens Family Winery | 39 | Groundwater | 5 | 0 |
| Bella Union Winery | 238 | Groundwater | 4 | 0 |
| Rombauer Vineyards | 150 | Groundwater | 4 | 0 |
| Spindrift Marina | 100 | Groundwater | 3 | 0 |
| Whitehall Lane Winery | 43 | Groundwater | 3 | 0 |
| Titus Winery | 64 | Groundwater | 2 | 0 |
| Pestoni Family Estate Winery | 28 | Groundwater | 2 | 0 |
| Hunnicutt Winery | 25 | Groundwater | 2 | 0 |
| Vailima Estates Mutual Water | 25 | Groundwater | 2 | 0 |
| St. Helena Purlieu LLC | 25 | Groundwater | 2 | 0 |
| Miner Family Winery | 25 | Groundwater | 2 | 0 |
| Phelps Vineyards | 19,412 | Groundwater | 1 | 0 |
| Tpwc DBA the Prisoner Wine Company | 200 | Groundwater | 1 | 0 |
| The Ranch Winery | 200 | Groundwater | 1 | 0 |
| Nickel & Nickel Winery | 148 | Groundwater | 1 | 0 |
| Cal Fire Sonoma-Lake-Napa Unit Hq | 65 | Groundwater | 1 | 0 |
| Duckhorn Vineyards | 25 | Groundwater | 1 | 0 |
| Pcsh, LLC | 25 | Groundwater | 1 | 0 |
| Adventist Health - St. Helena Hospital | 817 | Groundwater | 0 | 0 |
| Sutter Home Winery Inc. | 463 | Groundwater | 0 | 0 |
| Sutter Home Winery | 417 | Surface Water Purchased | 0 | 0 |
| Milat Winery | 128 | Groundwater | 0 | 0 |
| Cathiard Family Estate Winery | 75 | Groundwater | 0 | 0 |
| Sutter Home Winery Inc. Trinchero Cc | 71 | Groundwater | 0 | 0 |
| Turley Wine Cellars | 50 | Groundwater | 0 | 0 |
| Napa Valley Reserve Water System | 49 | Groundwater | 0 | 0 |
| Goldeneye Winery | 43 | Groundwater | 0 | 0 |
| Trinchero Winery | 42 | Groundwater | 0 | 0 |
| Ehlers Estate | 42 | Groundwater | 0 | 0 |
| Quintessa Winery Water System | 33 | Groundwater | 0 | 0 |
| Lmr Main Street Partners LLC | 26 | Surface Water Purchased | 0 | 0 |
| Upper Valley Disposal Service | 25 | Groundwater | 0 | 0 |
| Markham Vineyards | 25 | Surface Water Purchased | 0 | 0 |
| Nine Suns Winery | 25 | Groundwater | 0 | 0 |