Gwynnfield Subdivision, VA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). 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.
About Gwynnfield Subdivision
Gwynnfield Subdivision serves about 410 people through 159 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Essex County, Virginia. EPA system ID: VA4057400; phone on file: 804-749-8868. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Gwynnfield Subdivision is 0.75 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0.6 ppb |
| 2016 | 0.75 ppb |
Where this result ranks
Of the 996 Virginia systems with a lead result, the median latest reading is 0 ppb; 3 are over 15 ppb right now and 59 have gone over at some point. Gwynnfield Subdivision's reported as 0 (not detected) sits at the 28th percentile in Virginia and the 21st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Essex County
9 other systems share Essex County; 5 of them have a higher latest lead result than Gwynnfield Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Tappahannock, Town Of | 2,375 | 4.33 ppb |
| Va American South Hill Banks | 183 | 1 ppb |
| Cottage Row | 120 | 3.4 ppb |
| Riverdale Subdivision | 95 | 0 (not detected) |
| Millers Square | 60 | 0 (not detected) |
| Maryfield Sub. | 48 | 0 (not detected) |
| Riverview Mobile Estates | 48 | 0 (not detected) |
| Daingerfield Subdivision | 43 | 0.62 ppb |
| Colemans Island | 30 | 4.62 ppb |
What to do in your house
Look up your address in Gwynnfield Subdivision'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 Gwynnfield Subdivision 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. A zero today does not rule out a jump later - the rules are tightening in 2027.