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Tap water quality report

Mountain Air Water Assoc

EPA monitoring tested this supplier for 57 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

57
contaminants tested
6
detected
170
people served
5
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Ground water
Ownership
Private
Counties served
Clackamas

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

5
health-based violations
211
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1997-07-01 → 1997-07-31
MCL Health-based Resolved 1996-09-01 → 1996-09-30
MCL Health-based Resolved 1996-09-01 → 1996-09-30
MCL Health-based Resolved 1996-08-01 → 1996-08-31
MCL Health-based Resolved 1996-08-01 → 1996-08-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
Other Monitoring Resolved 2024-07-01

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2023
Copper
114.585 µg/L 8.8%
of the EPA limit 1300 µg/L
worst single sample: 145 µg/L
8/10 SYR4 2013–2016
Lead
4.599 µg/L 31%
of the EPA limit 15 µg/L
worst single sample: 4.8 µg/L
7/10 SYR4 2013–2016
TTHM
7.44 µg/L 9.3%
of the EPA limit 80 µg/L
worst single sample: 7.8 µg/L
3/6 SYR4 2012–2019
Barium
2.376 µg/L 0.1%
of the EPA limit 2000 µg/L
worst single sample: 2.47 µg/L
2/2 SYR4 2012
Fluoride
188.65 µg/L 4.7%
of the EPA limit 4000 µg/L
worst single sample: 190 µg/L
2/2 SYR4 2012
51 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHexachlorocyclopentadieneLassoMercuryNitrateNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)TrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MOUNTAIN AIR WATER ASSOC
Phone
503-806-4734
Email
[email protected]

Frequently asked questions about Mountain Air Water Assoc

Is Mountain Air Water Assoc tap water safe to drink?

EPA monitoring detected 6 contaminants in Mountain Air Water Assoc's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Mountain Air Water Assoc's water?

EPA monitoring detected Lead, Copper, Lead, TTHM, Barium, and others. The full list with the level and data source for each is above.

How many people does Mountain Air Water Assoc serve?

Mountain Air Water Assoc reports serving 170 people in Oregon, per its EPA record.

Has Mountain Air Water Assoc had any water quality violations?

The EPA has 211 violations on file for Mountain Air Water Assoc, of which 5 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.