Grassy Knob Subordinate Sd, AR
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (monitoring period 2017-2019). 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.
Grassy Knob Subordinate Sd at a glance
Grassy Knob Subordinate Sd serves about 88 people through 35 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Carroll County, Arkansas. EPA system ID: ART001101; phone on file: 479-445-8066. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
The highest 90th-percentile result EPA holds for Grassy Knob Subordinate Sd is 3 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2019 | 3 ppb |
Against other Arkansas systems
Of the 190 Arkansas systems with a lead result, the median latest reading is 1 ppb; 15 are over 15 ppb right now and 19 have gone over at some point. Grassy Knob Subordinate Sd's 3 ppb sits at the 77th percentile in Arkansas and the 81st nationally (higher means more lead).
Other water systems in Carroll County
16 other systems share Carroll County; 2 of them have a higher latest lead result than Grassy Knob Subordinate Sd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Berryville Waterworks | 6,813 | 2 ppb |
| Green Forest Waterworks | 6,265 | 1 ppb |
| Eureka Springs Waterworks | 4,053 | 7 ppb |
| Holiday Island Waterworks | 2,446 | 1 ppb |
| Oak Grove Water | 485 | - |
| Bluebird Water, Llc | 205 | - |
| Mundell Heights Waterworks | 203 | - |
| Lake Forest Subordinate Dist | 125 | - |
| Glen Acres | 68 | - |
| Sylvan Shores Sd Waterworks | 65 | - |
Your move
Test your own tap with a certified lab first-draw sample; Fayetteville, AR 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 Grassy Knob Subordinate Sd 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.