Iowa
Hamilton County drinking water quality
14 active public water systems serve 20,411 people in Hamilton County. 7 are compliant, 7 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
9 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Webster City Water Supply Webster City |
7,825 | 0 | 0 | |
|
Xenia Rwd (north) Stratford |
6,122 | 0 | 0 | |
|
Jewell Water Supply Jewell |
1,216 | 1 | 0 | |
|
Stratford Muni Water Dept Stratford |
707 | 1 | 0 | |
|
Ellsworth Public Water Supply Ellsworth |
514 | 3 | 1 | |
|
Stanhope Water Department Stanhope |
364 | 0 | 0 | |
|
Williams Water Supply Williams |
315 | 1 | 0 | |
|
Blairsburg Water Supply Blairsburg |
177 | 0 | 0 | |
|
Randall Water Supply Randall |
154 | 0 | 0 |
Non-community systems (5: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Flying J NO 572 Williams |
1,892 | 0 | 0 | |
|
Williams Travel Center Williams |
610 | 2 | 0 | |
|
Riverside Lutheran Bible Camp Story City |
320 | 0 | 0 | |
|
Community Church of Kamrar Kamrar |
167 | 1 | 0 | |
|
Super 8 Williams Williams |
28 | 2 | 0 |
Inactive systems (24, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Iowa records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.