Tri-County Water Assoc - Fairmont, WV
Lead detected, under the action levels
Latest 90th-percentile lead: 1.5 ppb (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. 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.
Tri-County Water Assoc - Fairmont at a glance
Tri-County Water Assoc - Fairmont serves about 1,880 people through 771 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Marion County, West Virginia. EPA system ID: WV3302522; phone on file: 304-534-5645. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 1.5 ppb from 0 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Tri-County Water Assoc - Fairmont is 2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.5 ppb |
| 2019 | 0 (not detected) |
| 2016 | 2 ppb |
Against other West Virginia systems
Of the 408 West Virginia systems with a lead result, the median latest reading is 0.9 ppb; 4 are over 15 ppb right now and 20 have gone over at some point. Tri-County Water Assoc - Fairmont's 1.5 ppb sits at the 68th percentile in West Virginia and the 64th nationally (higher means more lead).
Other water systems in Marion County
26 other systems share Marion County; 7 of them have a higher latest lead result than Tri-County Water Assoc - Fairmont. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Fairmont City Of | 30,586 | 2.3 ppb |
| Valley Falls Psd | 4,042 | 2.08 ppb |
| Monongah Town Of | 3,226 | 1.5 ppb |
| Little Creek Psd | 2,180 | 13.3 ppb |
| Monumental Psd | 1,965 | 0.4 ppb |
| Mannington City Of | 1,946 | 0.72 ppb |
| Rivesville Town Of | 1,267 | 0.54 ppb |
| Paw Paw Route 19 Psd | 1,257 | 2.9 ppb |
| Bingamon Psd | 1,179 | 1.2 ppb |
| Ices Run Psd | 1,149 | 0.31 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Shinnston, WV 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 Tri-County Water Assoc - Fairmont 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. The action level is dropping - the 10 ppb rule from 2027.