Washington
Franklin County drinking water quality
81 active public water systems serve 132,285 people in Franklin County. 51 are compliant, 30 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 0 carry a health flag.
Needs attention
Community water systems
31 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pasco Water Department |
115,102 | 2 | 0 | |
|
Connell City of |
5,150 | 1 | 1 | |
|
Basin City Water Sewer District |
1,740 | 5 | 0 | |
|
Mesa Water Department |
495 | 1 | 0 | |
|
White Bluff Water Association |
386 | 1 | 0 | |
|
Ringold Domestic Water Corp |
340 | 3 | 0 | |
|
West Mesa Domestic Water Assn |
316 | 2 | 0 | |
|
Kahlotus City of |
262 | 4 | 1 | |
|
Cypress Country Estates |
253 | 1 | 0 | |
|
Clark Addition Water System |
189 | 3 | 0 | |
|
West 15 Domestic Water Assn |
150 | 2 | 0 | |
|
Pasco Heights Domestic Water Assn |
135 | 1 | 0 | |
|
Radar Hill Water System |
128 | 0 | 0 | |
|
Rangeview |
122 | 1 | 0 | |
|
Richview |
120 | 0 | 0 | |
|
Scootenay Water Assn INC |
120 | 1 | 0 | |
|
Eltopia Water Association |
100 | 1 | 0 | |
|
North Slope Estates Property |
97 | 2 | 0 | |
|
Canyon Farm Camp |
96 | 0 | 0 | |
|
Hi-Point Housing |
96 | 0 | 0 | |
|
Graystone WS |
94 | 0 | 0 | |
|
Clearwater Domestic Water Assn |
78 | 0 | 0 | |
|
River Ridge Estates |
77 | 0 | 0 | |
|
Predator Ridge |
66 | 0 | 0 | |
|
J & B Orchards South |
63 | 0 | 0 | |
|
Sunset Domestic Water Assn |
60 | 1 | 0 | |
|
Lakeview |
50 | 1 | 0 | |
|
Oakdell Farms LLC |
47 | 1 | 0 | |
|
Kepps Acres Association |
35 | 0 | 0 | |
|
Sunrise Estates Water System |
33 | 2 | 0 | |
|
North 16 Domestic Water Assn |
29 | 0 | 0 |
Non-community systems (50: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (80, 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 Washington 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.