Dyersville Municipal Water Co, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.7 ppb (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. 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.
Dyersville Municipal Water Co at a glance
Dyersville Municipal Water Co serves about 4,477 people through 2,085 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Dubuque County, Iowa. EPA system ID: IA3130091; phone on file: 563-875-7724. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Dyersville Municipal Water Co's lead record
Against the period ending 2021 (2.2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Dyersville Municipal Water Co is 11.8 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.7 ppb |
| 2021 | 2.2 ppb |
| 2018 | 11.8 ppb over 10 |
| 2016 | 2.6 ppb |
Against other Iowa systems
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. Dyersville Municipal Water Co's 1.7 ppb sits at the 55th percentile in Iowa and the 66th nationally (higher means more lead).
Nearby utilities
29 other systems share Dubuque County; 11 of them have a higher latest lead result than Dyersville Municipal Water Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dubuque Water Works | 59,667 | 5 ppb |
| Asbury Municipal Water System | 5,943 | 0 (not detected) |
| Cascade Municipal Water Supply | 2,386 | 0 (not detected) |
| Peosta Water Supply | 2,278 | 0.5 ppb |
| Epworth Water Supply | 2,023 | 5.75 ppb |
| Farley Water Supply | 1,766 | 1.3 ppb |
| Alpine Park | 932 | 4.6 ppb |
| Table Mound Park | 455 | 0 (not detected) |
| New Vienna Water Supply | 382 | 0 (not detected) |
| Worthington Water Supply | 382 | 0 (not detected) |
Next steps for Dyersville, IA
Test your own tap with a certified lab first-draw sample; Dyersville, IA 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 Dyersville Municipal Water Co 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. The action level is dropping - the 10 ppb rule from 2027.