Diamond Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 1.39 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.
Diamond Pws at a glance
Diamond Pws serves about 926 people through 498 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 groundwater, in Newton County, Missouri. EPA system ID: MO5010217; phone on file: 417-385-2910. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 2.03 ppb from 3.42 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Diamond Pws is 3.42 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.39 ppb |
| 2022 | 3.42 ppb |
| 2020 | 3.42 ppb |
| 2019 | 1.96 ppb |
| 2017 | 1.96 ppb |
| 2016 | 2.43 ppb |
How Diamond 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. Diamond Pws's 1.39 ppb sits at the 58th percentile in Missouri and the 61st nationally (higher means more lead).
Neighbouring systems
13 other systems share Newton County; 7 of them have a higher latest lead result than Diamond Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Neosho Pws | 12,157 | 4.89 ppb |
| Seneca Pws | 2,390 | 2.07 ppb |
| Granby Pws | 2,034 | 2.38 ppb |
| Newton Co Pwsd 1 | 450 | 0.69 ppb |
| Fairview Pws | 380 | 0 (not detected) |
| Redings Mill Pws | 163 | 4.4 ppb |
| Stella Pws | 158 | 2.9 ppb |
| Big Valley Park Mhp | 158 | 0.53 ppb |
| Timberlost Mhp | 150 | 1.44 ppb |
| 43 Mobile Home & Rv Park | 137 | 2.81 ppb |
Next steps for Diamond, MO
Test your own tap with a certified lab first-draw sample; Diamond, 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 Diamond 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. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.