Tap Truth EPA drinking water records, in plain English

County drinking water records

Columbia County, OR drinking water systems

27 community water systems serve Columbia County, OR, reporting 36,850 people served in all.

17 of them (63%) had at least one health-based violation in the last 10 years. 13 systems still have one unresolved.

20 rely mainly on groundwater and 7 on surface water, counting water bought from other systems.

Their lead service line inventories list no lead lines, no galvanized lines that must be replaced and no lines of unknown material.

8 more systems are placed in Columbia County, OR by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
27
People served, sum of each system's own figure
36,850
Systems with a health-based violation, last 10 years
17
Systems with one unresolved
13
Lead service lines in inventories
0

Water systems serving Columbia County

27 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of St Helens St. Helens 13,410 Groundwater under direct influence 0 0 0
City of Scappoose Scappoose 8,710 Surface water 1 0 0
McNulty Water PUD Outside cities and towns 2,500 Groundwater 3 0 0
City of Clatskanie Clatskanie 2,188 Surface water 0 0 0
City of Vernonia Vernonia 2,100 Surface water 1 0 0
Warren Water Association Warren 2,050 Groundwater 0 0 0
Columbia City Mun Waterworks Columbia City 1,995 Groundwater 1 0 0
City of Rainier Rainier 1,932 Surface water 0 0 0
Western Hills MH Estates Outside cities and towns 375 Groundwater 4 2 0
Quincy Water Association Outside cities and towns 300 Groundwater 0 0 0
Midland Water Association Outside cities and towns 160 Surface water 14 1 0
Columbia Acres Water Assoc Outside cities and towns 110 Groundwater 1 0 0
Deer Island Village MHP Deer Island 100 Groundwater 1 1 0
Lost Creek Heights Wtr Assoc Outside cities and towns 100 Groundwater 0 2 0
Country Villa Mobile Estates Outside cities and towns 90 Groundwater 0 3 0
Deer Island Waterworks St. Helens 90 Groundwater 3 5 0
Goble Water Association Outside cities and towns 85 Groundwater 1 0 0
Tamarack Mobile Home Park Outside cities and towns 80 Groundwater 1 4 0
City of Prescott Prescott 70 Groundwater 2 0 0
Laurel Ridge MHP Outside cities and towns 70 Groundwater 0 2 0
Marshland Water Association Outside cities and towns 70 Surface water 5 1 0
Deer Island Heights WS Deer Island 60 Groundwater 3 8 0
Cedar Tree Mobile Home Park Outside cities and towns 50 Groundwater 2 0 0
J & M Mobile Home Park Outside cities and towns 45 Groundwater 3 3 0
Dikeside Moorage Outside cities and towns 45 Groundwater 0 0 0
Hogg Heaven MHP Outside cities and towns 40 Groundwater 1 5 0
Westland Water Association Outside cities and towns 25 Groundwater 0 2 0

Systems placed by county record in Columbia County

8 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Fishhawk Lake Reserve and Community County on record 350 Surface water 1 0 0
Deer View Cooperative County on record 90 Groundwater 0 1 0
Paradise Moorage County on record 90 Groundwater 1 5 0
Columbia Hills HOA County on record 84 Groundwater 0 0 0
Maple Terrace Mobile Home Park County on record 70 Groundwater 3 0 0
McCuddys Landing County on record 70 Groundwater 0 3 0
Berndt Creek Water Corp County on record 45 Surface water 1 1 0
Swedetown Water Assoc County on record 40 Groundwater 1 5 0

Cities and towns in Columbia County

9 places

Back to Oregon

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations