Water Quality in PRINEVILLE, OR (97754)

EPA violation data for public water systems serving ZIP code 97754.

147

Total Violations

Health-Based

139

Monitoring / Reporting

136

Resolved

What does this mean?

136 of 147 violations have been resolved. 8 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 139 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 73 Population served: 16,718

Violations Detail (147 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
E. COLI	Monitoring	0	N/A	Aug 18, 2025	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Active	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Active	N/A
COLIPHAGE	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 9, 2025	Active	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
E. COLI	Monitoring	0	N/A	Aug 25, 2024	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 25, 2024	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
E. COLI	Monitoring	0	N/A	Jul 28, 2024	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 29, 2024	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Atrazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Cardiovascular system or reproductive problems
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Nitrate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Increased risk of cancer
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
E. COLI	Monitoring	0	N/A	Jul 1, 2023	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
E. COLI	Monitoring	0	N/A	Dec 2, 2022	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Groundwater Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Arsenic	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jul 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Arsenic	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Groundwater Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	Aug 14, 2021	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Public Notice	Monitoring	N/A	N/A	Jul 22, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Apr 30, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Gross Alpha, Excl. Radon and U	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Gross Alpha, Excl. Radon and U	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Combined Uranium	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Combined Radium (-226 and -228)	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Combined Uranium	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(16)

E. COLI

Aug 18Active

Revised Total Coliform Rule

Jul 31Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Active

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Active

COLIPHAGE

May 31Resolved

Groundwater Rule

May 31Resolved

Revised Total Coliform Rule

Apr 30Resolved

Groundwater Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Public Notice

Apr 9Active

Revised Total Coliform Rule

Mar 31Resolved

2024(29)

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

Revised Total Coliform Rule

Nov 30Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Active

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

E. COLI

Aug 25Active

E. COLI

Aug 25Active

Revised Total Coliform Rule

Jul 31Resolved

E. COLI

Jul 28Active

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Feb 29Resolved

2023(72)

ETHYLENE DIBROMIDE

Dec 31Resolved

Atrazine

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Benzene

Dec 31Resolved

Nitrate

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Dinoseb

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

Simazine

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Styrene

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Dalapon

Dec 31Resolved

Endothall

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Carbofuran

Dec 31Resolved

LASSO

Dec 31Resolved

Heptachlor

Dec 31Resolved

2,4-D

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

Chlordane

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

Vinyl chloride

Dec 31Resolved

Glyphosate

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

OXAMYL

Dec 31Resolved

Toxaphene

Dec 31Resolved

Endrin

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

Toluene

Dec 31Resolved

Diquat

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

Picloram

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Revised Total Coliform Rule

Nov 30Resolved

Lead and Copper Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Aug 31Resolved

E. COLI

Jul 1Active

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Groundwater Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Groundwater Rule

Apr 30Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

How Does This Compare?

PRINEVILLE (97754) has 147 recorded violations, including 8 health-based. 11 remain unresolved. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove.

Water Quality in PRINEVILLE, OR (97754)

What does this mean?

Violations Detail (147 total)

Lead & Copper Levels

Violation Timeline

2025(16)

2024(29)

2023(72)

2022(11)

2021(19)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

UV Water Purifier

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