Water Quality in Dolores, CO (81334)

EPA violation data for public water systems serving ZIP code 81334.

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

1,389

Population

5

Water Systems

87

Violations (5yr)

2

Health-Based

Location

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Water Systems Serving This Area (5)

Montezuma Wc

Surface water 13,797 people served
14 violations (5yr)
Lead tested: 2.9 ppb (limit: 15 ppb)

Cortez City Of

Surface water 8,770 people served
0 violations
Lead tested: 2.2 ppb (limit: 15 ppb)

Towaoc Water System

2 health-based
Purchased surface water 2,020 people served
17 violations (5yr) · 2 health-based
Lead tested: 1.2 ppb (limit: 15 ppb)

Ute Mountain Ute Tribe

Surface water 1,300 people served
0 violations

White Mesa Water System

Groundwater 300 people served
56 violations (5yr)
Lead tested: 1 ppb (limit: 15 ppb)

Contaminants Found

TTHMHealth-Based
4 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

9 violations
All resolved
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

6 violations
Has active
Lead and Copper RuleMonitoring

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

6 violations
Has active
Chlorine dioxideMonitoring
3 violations
All resolved
ChloriteMonitoring
3 violations
All resolved
Surface Water Treatment RuleMonitoring
3 violations
All resolved
Total Haloacetic Acids (HAA5)Monitoring
2 violations
All resolved
p-DichlorobenzeneMonitoring
2 violations
All resolved
TrichloroethyleneMonitoring
2 violations
All resolved
Carbon tetrachlorideMonitoring
2 violations
All resolved
1,2-DichloropropaneMonitoring
2 violations
All resolved
cis-1,2-DichloroethyleneMonitoring
2 violations
All resolved
TolueneMonitoring
2 violations
All resolved
Vinyl chlorideMonitoring
2 violations
All resolved
1,2-DichloroethaneMonitoring
2 violations
All resolved
BenzeneMonitoring
2 violations
All resolved
EthylbenzeneMonitoring
2 violations
All resolved
StyreneMonitoring
2 violations
All resolved
TetrachloroethyleneMonitoring
2 violations
All resolved
o-DichlorobenzeneMonitoring
2 violations
All resolved
1,2,4-TrichlorobenzeneMonitoring
2 violations
All resolved
1,1,2-TrichloroethaneMonitoring
2 violations
All resolved
1,1,1-TrichloroethaneMonitoring
2 violations
All resolved
trans-1,2-DichloroethyleneMonitoring
2 violations
All resolved
1,1-DichloroethyleneMonitoring
2 violations
All resolved
CHLOROBENZENEMonitoring
2 violations
All resolved
DICHLOROMETHANEMonitoring
2 violations
All resolved
Xylenes, TotalMonitoring
2 violations
All resolved
Nitrate-NitriteMonitoring
2 violations
All resolved
ArsenicMonitoring

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

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
1 ppb measured Action level: 15 ppb

Sampled: Jul 2025

How Does This Compare?

Dolores (81334) has more violations than 95% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 87.

Fewer violations 95th 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.

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

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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