Water Quality in The Dalles, OR (97761)

EPA violation data for public water systems serving ZIP code 97761.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

2,955

Population

19

Water Systems

247

Violations (5yr)

27

Health-Based

Location

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Water Systems Serving This Area (19)

The Dalles, City Of

All resolved
Surface water 13,010 people served
12 violations (5yr) · All resolved
Lead tested: 0.8 ppb (limit: 15 ppb) ✓

Deschutes Valley Water Dist

Groundwater 11,700 people served
0 violations
Lead tested: 1.1 ppb (limit: 15 ppb) ✓

Warm Springs Water Treatment Plant

9 health-based
Surface water 3,800 people served
157 violations (5yr) · 9 health-based

Warm Springs Treatment Plant

Surface water 1,575 people served
0 violations

Warm Springs Agency-Bia

Surface water 1,400 people served
0 violations

Simnasho Schoolie

12 health-based
Groundwater 350 people served
34 violations (5yr) · 12 health-based

Rainbow Market

1 health-based
Groundwater 250 people served
20 violations (5yr) · 1 health-based

Confed Tribes Of Warm Springs

Surface water 175 people served
0 violations

Simnasho-Schoolie Flat Wat Sys

Groundwater 150 people served
0 violations

Sidwalter

5 health-based
Groundwater 130 people served
21 violations (5yr) · 5 health-based

Bia Celilo Village

All resolved
Groundwater 75 people served
3 violations (5yr) · All resolved

Sidwalter Flat Water System

Groundwater 60 people served
0 violations

Phs Indian Health Center

Surface water 28 people served
0 violations

Alice'S Restaurant

Groundwater 25 people served
0 violations

Celilo Village-Bia Plant Mgr

Groundwater 25 people served
0 violations

Deschutes Trailer Court

Groundwater 25 people served
0 violations

Kahneeta

Surface water 24 people served
0 violations

Bia Warm Springs Agency

Surface water 10 people served
0 violations

Kah-Nee-Ta Resort

Surface water 0
0 violations

Contaminants Found

Revised Total Coliform RuleHealth-Based

Missed testing deadlines — not a detection of bacteria.

22 violations
All resolved
LEAD AND COPPER RULE REVISIONSHealth-Based
6 violations
Has active
Groundwater RuleHealth-Based
3 violations
Has active
Long Term 2 Enhanced Surface Water Treatment RuleHealth-Based
1 violation
Has active
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

10 violations
All resolved
CARBON, TOTALMonitoring
9 violations
All resolved
NitrateMonitoring

At high levels, nitrate can cause blue baby syndrome in infants.

9 violations
All resolved
Interim Enhanced Surface Water Treatment RuleMonitoring
7 violations
All resolved
Surface Water Treatment RuleMonitoring
7 violations
All resolved
Public NoticeMonitoring
7 violations
Has active
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

5 violations
All resolved
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

4 violations
Has active
TTHMMonitoring
3 violations
All resolved
Total Haloacetic Acids (HAA5)Monitoring
3 violations
All resolved
TolueneMonitoring
3 violations
All resolved
FluorideMonitoring
3 violations
All resolved
MercuryMonitoring
3 violations
All resolved
StyreneMonitoring
3 violations
All resolved
Beryllium, TotalMonitoring
3 violations
All resolved
BenzeneMonitoring
3 violations
All resolved
EthylbenzeneMonitoring
3 violations
All resolved
1,1,2-TrichloroethaneMonitoring
3 violations
All resolved
trans-1,2-DichloroethyleneMonitoring
3 violations
All resolved
ChromiumMonitoring
3 violations
All resolved
1,1,1-TrichloroethaneMonitoring
3 violations
All resolved
1,2,4-TrichlorobenzeneMonitoring
3 violations
All resolved
1,1-DichloroethyleneMonitoring
3 violations
All resolved
Xylenes, TotalMonitoring
3 violations
All resolved
DICHLOROMETHANEMonitoring
3 violations
All resolved
TrichloroethyleneMonitoring
3 violations
All resolved
p-DichlorobenzeneMonitoring
3 violations
All resolved
NickelMonitoring
3 violations
All resolved
TetrachloroethyleneMonitoring
3 violations
All resolved
CHLOROBENZENEMonitoring
3 violations
All resolved
o-DichlorobenzeneMonitoring
3 violations
All resolved
Carbon tetrachlorideMonitoring
3 violations
All resolved
SeleniumMonitoring
3 violations
All resolved
1,2-DichloroethaneMonitoring
3 violations
All resolved
CYANIDEMonitoring
3 violations
All resolved
Antimony, TotalMonitoring
3 violations
All resolved
CadmiumMonitoring
3 violations
All resolved
cis-1,2-DichloroethyleneMonitoring
3 violations
All resolved
1,2-DichloropropaneMonitoring
3 violations
All resolved
ArsenicMonitoring

A naturally occurring element that can cause cancer and other health effects at high levels.

3 violations
All resolved
Vinyl chlorideMonitoring
3 violations
All resolved
BariumMonitoring
3 violations
All resolved
Thallium, TotalMonitoring
3 violations
All resolved
E. COLIMonitoring
3 violations
Has active
Gross Alpha, Excl. Radon and UMonitoring
1 violation
All resolved
Combined Radium (-226 and -228)Monitoring
1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
0.8 ppb measured Action level: 15 ppb

Sampled: Jan 2023

How Does This Compare?

The Dalles (97761) has more violations than 99% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 247.

Fewer violations 99th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

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. This is general educational information, not an endorsement of any specific product.

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