Kay County Rural Water District 7, OK
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2026). 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.
Kay County Rural Water District 7 at a glance
Kay County Rural Water District 7 serves about 920 people through 550 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 Kay County, Oklahoma. EPA system ID: OK3003601; phone on file: 580-363-1260. 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 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Kay County Rural Water District 7 is 0 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
Against other Oklahoma systems
Of the 870 Oklahoma systems with a lead result, the median latest reading is 0.81 ppb; 6 are over 15 ppb right now and 66 have gone over at some point. Kay County Rural Water District 7's reported as 0 (not detected) sits at the 25th percentile in Oklahoma and the 26th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Kay County
11 other systems share Kay County; 3 of them have a higher latest lead result than Kay County Rural Water District 7. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ponca City Mun Water | 27,155 | 0 (not detected) |
| Blackwell Municipal Authority | 7,668 | 0 (not detected) |
| Tonkawa | 3,299 | 6.4 ppb |
| Newkirk | 2,243 | 0 (not detected) |
| Kay Co Rwd #1 | 1,765 | 0 (not detected) |
| Kay Co Rwd #3 | 1,000 | 0 (not detected) |
| Kay Co Rwd #5 (Dale Water Corp) | 765 | 0 (not detected) |
| Kaw City Water Authority | 372 | 2.6 ppb |
| Braman | 244 | 0 (not detected) |
| Kay County Rwd #2 | 50 | 4.6 ppb |
Next steps for Blackwell, OK
Look up your address in Kay County Rural Water District 7'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 Kay County Rural Water District 7 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.