Terry Water Association, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
Who runs the water here
Terry Water Association serves about 25 people through 10 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Benton County, Iowa. EPA system ID: IA0690304; phone on file: 319-846-3444. They can tell you what your service line is made of and whether they pay to replace it.
Terry Water Association's lead record
Against the period ending 2020 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Terry Water Association is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2 ppb |
| 2020 | 1 ppb |
| 2017 | 2 ppb |
| 2016 | 2 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. Terry Water Association's 2 ppb sits at the 57th percentile in Iowa and the 69th nationally (higher means more lead).
Nearby utilities
16 other systems share Benton County; 4 of them have a higher latest lead result than Terry Water Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Vinton Municipal Water Dept | 4,938 | 0 (not detected) |
| Belle Plaine Water Dept | 2,380 | 9.8 ppb |
| Atkins Municipal Water Works | 2,056 | 2 ppb |
| Poweshiek Water Association (Cr) | 2,000 | 0.6 ppb |
| Urbana Water Supply | 1,562 | 0 (not detected) |
| Shellsburg Water Supply | 961 | 3.1 ppb |
| Newhall Water Supply | 881 | 2.1 ppb |
| Van Horne Water Works | 779 | 0 (not detected) |
| Blairstown Water Supply | 738 | 0 (not detected) |
| Keystone Water Supply | 599 | 5.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Fairfax, 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 Terry Water Association 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. Systems that went over once often dip back under; here is what that means.