Truesdale Water Supply, IA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Truesdale Water Supply serves about 69 people through 36 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 Buena Vista County, Iowa. EPA system ID: IA1182035; phone on file: 712-262-8847. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2021 (0.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Truesdale Water Supply is 0.7 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 0.6 ppb |
| 2018 | 0.7 ppb |
Where this result ranks
Of the 1,066 Iowa systems with a lead result, the median latest reading is 1.4 ppb; 4 are over 15 ppb right now and 36 have gone over at some point. Truesdale Water Supply's reported as 0 (not detected) sits at the 3rd percentile in Iowa and the 6th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
10 other systems share Buena Vista County; 7 of them have a higher latest lead result than Truesdale Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Storm Lake Water Treatment Plant | 11,431 | 0 (not detected) |
| Alta Municipal Water Plant | 2,087 | 0 (not detected) |
| Sioux Rapids Water Department | 932 | 6.5 ppb |
| Newell Water Treatment Plant | 921 | 1.1 ppb |
| Lakeside Water Supply | 700 | 0.7 ppb |
| Albert City Muni Water Supply | 677 | 1.4 ppb |
| Marathon Light & Water Department | 230 | 2 ppb |
| Rembrandt Water Supply | 209 | 0 (not detected) |
| Lake Creek Homeowners Association | 175 | 0.1 ppb |
| Linn Grove Water Works | 163 | 2.3 ppb |
Next steps for Spencer, IA
Look up your address in Truesdale Water Supply's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Truesdale Water Supply 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. Small systems behave differently: why small systems go over more often.