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Tap water quality report

Hat Rock Water Company

EPA monitoring tested this supplier for 61 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

61
contaminants tested
10
detected
150
people served
46
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Ground water
Ownership
Private
Counties served
Umatilla

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.

46
health-based violations
167
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2019-07-22
TT Health-based Resolved 2019-07-22
TT Health-based Resolved 2019-07-22
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2016-07-01 → 2016-09-30
MCL Health-based Resolved 2016-07-01 → 2016-09-30
MCL Health-based Resolved 2016-07-01 → 2016-09-30

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
Nitrate
12700 µg/L 127%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 14000 µg/L
58/60 SYR4 2012–2019
Copper
984.5 µg/L 76%
of the EPA limit 1300 µg/L
worst single sample: 1027 µg/L
18/20 SYR4 2013–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2024
Lead
7.7 µg/L 51%
of the EPA limit 15 µg/L
worst single sample: 8 µg/L
4/20 SYR4 2013–2018
TTHM
13.6 µg/L 17%
of the EPA limit 80 µg/L
worst single sample: 14.2 µg/L
3/4 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.655 µg/L 6.1%
of the EPA limit 60 µg/L
worst single sample: 3.7 µg/L
2/4 SYR4 2012–2019
Arsenic
7 µg/L 70%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Combined Uranium
4.2 µg/L 14%
of the EPA limit 30 µg/L
 1/2 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
5.6 pCi/L 37%
of the EPA limit 15 pCi/L
 1/2 SYR4 2014–2017
Gross Beta Particle Activity
7.3 pCi/L
No EPA limit set
 1/2 SYR4 2014–2017
51 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HAT ROCK WATER COMPANY
Phone
209-483-2246
Email
[email protected]

Frequently asked questions about Hat Rock Water Company

Is Hat Rock Water Company tap water safe to drink?

EPA monitoring detected 10 contaminants in Hat Rock Water Company'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 Hat Rock Water Company's water?

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

How many people does Hat Rock Water Company serve?

Hat Rock Water Company reports serving 150 people in Oregon, per its EPA record.

Has Hat Rock Water Company had any water quality violations?

The EPA has 167 violations on file for Hat Rock Water Company, of which 46 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.