Perry Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 3.47 ppb (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. 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.
Perry Pws at a glance
Perry Pws serves about 694 people through 406 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 Ralls County, Missouri. EPA system ID: MO2010635; phone on file: 573-565-3131. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (3.04 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Perry Pws is 4.27 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.47 ppb |
| 2025 | 3.04 ppb |
| 2023 | 3.04 ppb |
| 2023 | 3.04 ppb |
| 2022 | 2.9 ppb |
| 2020 | 2.9 ppb |
| 2019 | 4.27 ppb |
| 2017 | 4.27 ppb |
| 2016 | 3.93 ppb |
How Perry Pws compares
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. Perry Pws's 3.47 ppb sits at the 85th percentile in Missouri and the 85th nationally (higher means more lead).
Neighbouring systems
3 other systems share Ralls County; 2 of them have a higher latest lead result than Perry Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ralls County Pwsd 1 | 7,662 | 0 (not detected) |
| Cannon Pwsd 1 | 6,482 | 4.82 ppb |
| New London Pws | 975 | 5.41 ppb |
Next steps for Perry, MO
Test your own tap with a certified lab first-draw sample; Perry, 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 Perry Pws 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. Size matters more than most people expect: small vs large water systems.