Oklahoma · population 2,988
Lead pipes in Tonkawa, OK
1,255 lines still unidentified
Most of Tonkawa (population 2,988) gets its water from Tonkawa. It reported no confirmed lead service lines, but 1,255 of 1,255 lines are still listed as unknown material, so lead hasn't been ruled out.
0% of Tonkawa's service lines are lead or galvanized requiring replacement, lower than the Oklahoma average (0.9%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 100%
- Non-lead 0%
Latest lead test for Tonkawa (Jan 2023–Dec 2025): 6.4 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Tonkawa.
Water systems serving Tonkawa
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| TonkawaMain system | 0 | 0 | 1,255 | 0% |
| Garfield Co RWD #6Serves nearby areas | 0 | 0 | 0 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Tonkawa
The counts above cover the whole water system. To see whether your line is lead, look up your address on Tonkawa's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Ponca1 lead + galv. lines
- Newkirk390 unknown
- Perry2,669 unknown
- North Enid11 lead + galv. lines
- Fairfax220 lead + galv. lines
- Enid11 lead + galv. lines
- Pawnee471 unknown
- Stillwaterno lead reported
Check another water system
Questions
Does Tonkawa, OK have lead pipes?
None are confirmed, but Tonkawa still lists 1,255 service lines as unknown material.
Who supplies water to Tonkawa?
EPA's service area maps place most of Tonkawa in Tonkawa's service area (PWSID OK2003603). Garfield Co RWD #6 also serves parts of the city or nearby areas.
How do I check whether my Tonkawa home has a lead service line?
Search your address on Tonkawa's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Tonkawa be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Tonkawa whether your street is scheduled and whether it covers the private side.