Marshall County Rural Water District #2, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 1.1 ppb (monitoring period 2021-2023). 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.
About Marshall County Rural Water District #2
Marshall County Rural Water District #2 serves about 17,587 people through 7,146 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Marshall County, Oklahoma. EPA system ID: OK1010848; phone on file: 580-795-3368. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 1.1 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Marshall County Rural Water District #2 is 1.1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.1 ppb |
| 2020 | 0 (not detected) |
| 2018 | 0 (not detected) |
How Marshall County Rural Water District #2 compares
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. Marshall County Rural Water District #2's 1.1 ppb sits at the 56th percentile in Oklahoma and the 57th nationally (higher means more lead).
Nearby utilities
7 other systems share Marshall County; 3 of them have a higher latest lead result than Marshall County Rural Water District #2. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Madill | 3,410 | 1.7 ppb |
| Kingston Pwa | 1,600 | 0.5 ppb |
| Oakland Pwa | 1,050 | 1.54 ppb |
| Oakview Water Corp | 925 | 2.4 ppb |
| Cardinal Hill Subdivision | 475 | 0.41 ppb |
| Marshall County Rwd #1 | 468 | - |
| Texoma Hills | 212 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Madill, OK 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 Marshall County Rural Water District #2 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. Systems that went over once often dip back under; here is what that means.