Graham Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 0.85 ppb (monitoring period 2024-2024). 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 Graham Pws
Graham Pws serves about 170 people through 78 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 groundwater, in Nodaway County, Missouri. EPA system ID: MO1010319; phone on file: 660-541-4626. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Graham Pws's lead record
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Graham Pws is 6.83 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.85 ppb |
| 2023 | 0 (not detected) |
| 2022 | 1.43 ppb |
| 2022 | 4.6 ppb |
| 2022 | 1.23 ppb |
| 2021 | 0 (not detected) |
| 2020 | 4.6 ppb |
| 2019 | 0.79 ppb |
| 2017 | 0.79 ppb |
| 2016 | 6.83 ppb |
Against other Missouri systems
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Graham Pws's 0.85 ppb sits at the 47th percentile in Missouri and the 48th nationally (higher means more lead).
Neighbouring systems
11 other systems share Nodaway County; 8 of them have a higher latest lead result than Graham Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Maryville Pws | 10,775 | 6.05 ppb |
| Nodaway County Pwsd 1 | 6,428 | 1.41 ppb |
| Burlington Junction Pws | 630 | 1.53 ppb |
| Hopkins Pws | 550 | 1.77 ppb |
| Ravenwood Pws | 420 | 0 (not detected) |
| Skidmore Pws | 230 | 5.74 ppb |
| Barnard Pws | 220 | 2.9 ppb |
| Clearmont Pws | 210 | 1.8 ppb |
| Conception Junction Pws | 192 | 0 (not detected) |
| Elmo Pws | 169 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Graham, MO 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 Graham Pws whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1454 ppb (copper action level 1,300 ppb).
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. Size matters more than most people expect: small vs large water systems.