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County drinking water records

Multnomah County, OR drinking water systems

21 community water systems serve Multnomah County, OR, reporting 845,643 people served in all. A system that also serves other counties counts all of its customers here.

5 of them (24%) had at least one health-based violation in the last 10 years. 5 systems still have one unresolved.

12 rely mainly on groundwater and 9 on surface water, counting water bought from other systems.

20 systems filed a lead service line inventory listing 0 lead lines, 0 galvanized lines that must be replaced and 44 lines of unknown material.

4 more systems are placed in Multnomah 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
21
People served, sum of each system's own figure
845,643
Systems with a health-based violation, last 10 years
5
Systems with one unresolved
5
Lead service lines in inventories
0

Water systems serving Multnomah County

21 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
Portland Water Bureau Portland, Dunthorpe and 1 more 666,200 Surface water 1 1 0
City of Gresham Gresham 73,932 Purchased surface water 0 0 0
Rockwood PUD Gresham, Portland and 1 more 65,443 Purchased surface water 0 0 0
City of Troutdale Troutdale 16,185 Groundwater 0 0 0
City of Fairview Fairview 9,963 Groundwater 1 0 0
City of Wood Village Wood Village 4,388 Groundwater 0 0 0
Corbett Water District Outside cities and towns 2,954 Surface water 0 0 0
Pleasant Home Water District Orient and land outside it 1,510 Purchased surface water 0 0 0
Palatine Hill Water District Dunthorpe 1,500 Purchased surface water 0 0 0
Lusted Water District Orient and land outside it 1,200 Purchased surface water 0 0 0
Valley View Water District Outside cities and towns 1,034 Purchased surface water 0 0 0
Interlachen Water PUD Outside cities and towns 360 Groundwater 3 1 0
Burlington Water District Outside cities and towns 340 Purchased surface water 0 0 0
Sigler Cove Marina Outside cities and towns 150 Groundwater 0 0 0
Rocky Pointe Marina Outside cities and towns 125 Groundwater 0 0 0
Mobile Village MHP LLC Gresham 100 Groundwater 0 0 0
Sauvie Island Moorage Outside cities and towns 96 Groundwater 1 4 No inventory
Terrand Mobile Terrace Gresham 71 Groundwater 0 0 0
Latourell Falls Township Outside cities and towns 32 Groundwater 0 2 0
Mayfair Moorage Inc Outside cities and towns 30 Groundwater 0 0 0
Big Oak Marina Outside cities and towns 30 Groundwater 2 1 0

Systems placed by county record in Multnomah County

4 systems

EPA has no service area map for these systems. 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
Sandy Boulevard Mobile Villa County on record 350 Groundwater 0 0 0
Manna House Church County on record 300 Groundwater 1 3 0
Lorna Water District County on record 212 Purchased surface water 0 0 0
Wapato Moorage Association County on record 74 Groundwater 0 0 0

Cities and towns in Multnomah County

8 places

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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