Tapcensus

Idaho

Canyon County drinking water quality

142 active public water systems serve 219,459 people in Canyon County. 37 are compliant, 105 had at least one EPA violation in the past three years, 6 are designated serious violators, and 1 carries a health flag.

Active systems 142 84 community systems
People served 219K by public water systems
Systems with violations 105 74% of active systems, past 3 years
Serious violators 6 1 systems carry a health flag

Needs attention

Sorrento Lactalis ID3140124 · Non-Transient non-community system · Serves 700 5 rules violated in the past three years
Lds Church Sunnyridge ID3140248 · Transient non-community system · Serves 539 1 rule violated in the past three years. Unresolved: Nitrate.
Shortstop INC ID3140055 · Transient non-community system · Serves 200 2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
Drake Subd ID3140028 · Community water system · Serves 150 9 rules violated in the past three years. Unresolved: 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene, 1,2,4-Trichlorobenzene, 1,2-Dibromo-3-Chloropropane (DBCP), 1,2-Dichloroethane, 1,2-Dichloropropane, 2,4,5-TP (Silvex), 2,4-D, Alachlor (Lasso), Antimony, Atrazine, BHC-Gamma (Lindane), Barium, Benzene, Benzo(a)pyrene, Beryllium, Cadmium, Carbofuran, Carbon Tetrachloride, Chlordane, Chlorine (MRDL), Chlorobenzene, Chromium, Combined Uranium, Dalapon, Di(2-ethylhexyl) Adipate, Di(2-ethylhexyl) Phthalate, Dichloromethane (Methylene Chloride), Dinoseb, Diquat, Endothall, Endrin, Ethylbenzene, Ethylene Dibromide (EDB), Fluoride, Glyphosate, Gross Alpha, Excl. Radon and U, Heptachlor, Heptachlor Epoxide, Hexachlorobenzene, Hexachlorocyclopentadiene, Lead and Copper Rule (LCR), Mercury, Methoxychlor, Nickel, Nitrite, Oxamyl (Vydate), Pentachlorophenol, Picloram, Polychlorinated Biphenyls (PCBs), Public Notification Rule, Radium-226, Radium-228, Selenium, Simazine, Styrene, Tetrachloroethylene (PCE), Thallium, Toluene, Toxaphene, Trichloroethylene (TCE), Vinyl Chloride, Xylenes, Total, cis-1,2-Dichloroethylene, o-Dichlorobenzene, p-Dichlorobenzene, and trans-1,2-Dichloroethylene.
Pleasant View Manor ID3140079 · Community water system · Serves 100 5 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR).
Degroot ID3140269 · Non-Transient non-community system · Serves 30 2 rules violated in the past three years. Unresolved: Arsenic and Lead and Copper Rule (LCR).
Rivervue Middle School ID3140095 · Non-Transient non-community system · Serves 85 2 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR) and Public Notification Rule.

Community water systems

84 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Nampa City of
 100,200 0 0
Caldwell City of
 78,740 1 1
Middleton City of
 13,190 0 0
Parma City of
 2,250 1 0
Wilder City of
 1,690 1 1
Caldwell Housing Authority
 1,100 1 1
Greenleaf City of
 846 1 0
Melba City of
 648 4 1
Notus City of
 539 1 1
Shalimar Subd
 370 1 1
Belle Aire Acres 2
 350 1 1
Lansing Meadows
 320 2 1
EL Rancho Heights
 300 1 1
Lakeys Cafe and Trailer Park
 300 1 1
Evergreen Mobile Park
 284 5 2
Covert Water Users Association
 250 1 1
Rolling Hills Estates Water Company
 250 2 1
Woodview Acres Property Owners
 245 1 0
Sunnyridge 3 Water Corp
 240 0 0
Sunlight Terrace
 234 0 0
Indian Village
 225 4 2
Karcher Ranchette Water Corp
 213 5 2
Somerset West Water Corp
 203 1 1
Owyhee Village Subd Water Assn INC
 200 2 1
Timberstone HOA
 170 2 1
Idhw Southwest Idaho Treatment Center
 168 0 0
Lakeview Hills Water Users Association
 160 1 1
Camelot Water Assn INC
 157 2 2
Clark Theurer Water Assn
 155 1 1
Drake Subd
 150 9 3
Leisure Heights Homeowners Association
 142 1 0
OK Water Assn
 140 2 1
Par Estates Homeowners Assn
 140 1 0
Rio Vista Water Company 3
 140 1 1
Shamrock Villa Water Assn
 130 0 0
Gem State Academy
 121 0 0
Country Club Subdivisions Water Assn
 120 0 0
Apache Heights Subdivision (2)
 110 3 1
Sky Ranch Estates
 104 1 1
Karcher Acres Subd
 100 1 1
Lakeview Water Company 1
 100 2 2
M & T Water Corp
 100 2 0
Northside Estates HOA INC
 100 0 0
Pleasant View Manor
 100 5 1
Purple Sage Community
 98 3 0
East Lizard Butte Water Corp
 95 2 1
Idaho Youth Ranch Hands of Promise
 95 2 1
Verde Hills Water Users Assn INC
 95 0 0
Maverick Subd Lasher Construction
 90 2 1
Roswell Water Users Coop Company
 90 3 3
Non-community systems (58: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Lds Church Farmway
 784 2 1
Lds Building 30 Hwy 30
Caldwell 		775 3 1
Lds Church Deer Flat
 718 1 0
Sorrento Lactalis
 700 5 0
Lds Church Nampa Northside
 684 0 0
Lds Lansing Lane
Middleton 		614 1 0
Lds Church Sunnyridge
 539 1 0
Jackson Food Store 178
 500 3 1
West Canyon Elementary School
 467 0 0
Simplot Potato
 450 0 0
Purple Sage Elementary
 410 1 1
Flamingo West
 320 1 1
Chase Crossing
 306 2 0
Parma Motor VU
 300 2 1
United Reformed Church of Nampa
Nampa 		270 1 1
Cti Food Service
 216 3 1
Faith Journey Church
 205 0 0
Church of God of Prophecy
Nampa 		200 0 0
Extra Mile #196
 200 1 0
Purple Sage Golf Course
 200 0 0
Shortstop INC
 200 2 0
Woodgrain Millwork
Nampa 		200 1 1
Caldwell Christian Church
 175 2 0
River Bend Golf Course
 150 0 0
Country Corners Campground & RV Park
 120 2 0
Marble Front Headstart
 110 1 0
Symms Fruit Ranch INC
 88 4 1
Gayle Manufacturing CO
 87 0 0
Rivervue Middle School
 85 2 2
Syngenta Seeds INC
 80 0 0
Deer Flat National Wildlife Refuge HQ
 75 1 0
Lake Point Campground #1
 60 1 0
Maddens Facility
 60 0 0
Zoroco Packaging INC
 60 2 1
The Orchard House
 56 0 0
Champion Produce
 55 3 2
Lakeshore Market
 50 3 1
Midway Sports Park
 50 0 0
Sunnyslope Market
 50 0 0
Utaev Stores
 50 1 1
Parma Research and Extension Center
 42 0 0
Parma Ridge Winery
 42 0 0
Mountainland Apples
 40 2 0
Beranna
 35 1 1
Lake Point Campground #2
 35 1 0
Pa'aoa LLC
 35 0 0
Canyon County Solid Waste
 30 1 0
Degroot
 30 2 1
Sunridge
 30 1 1
Allendale Produce
 29 2 0
Beckys Dance CO
 25 2 0
Celebration Park
 25 1 0
Dans Ferry Service
 25 1 0
Koenig Vineyards
 25 0 0
Notus Stinker 60
 25 0 0
Precept Wine
 25 1 0
Valley Wide Coop Parma
Parma 		25 1 0
Valley Wide Country Store Nampa
 25 2 0
Inactive systems (157, 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 Idaho 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.