Water Quality in Chinle, AZ (86503)

EPA violation data for public water systems serving ZIP code 86503.

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

9,911

Population

8

Water Systems

87

Violations (5yr)

2

Health-Based

Location

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Water Systems Serving This Area (8)

Chinle High School

Groundwater 975 people served
15 violations (5yr)

Rough Rock Community High School Bia

2 health-based
Groundwater 350 people served
18 violations (5yr) · 2 health-based
Lead tested: 1.7 ppb (limit: 15 ppb)

Chinle Usd 24 Administration Center

Groundwater 220 people served
20 violations (5yr)

Rough Rock Demonstration School Bia

All resolved
Groundwater 200 people served
4 violations (5yr) · All resolved
Lead tested: 0.5 ppb (limit: 15 ppb)

Cottonwood Day School Bia

All resolved
Groundwater 185 people served
5 violations (5yr) · All resolved
Lead tested: 4.2 ppb (limit: 15 ppb)

Round Rock Elementary School

Groundwater 100 people served
0 violations

Canyon De Chelly National Monument

Groundwater 55 people served
6 violations (5yr)
Lead tested: 0 ppb (limit: 15 ppb)

Navajo National Monument

Groundwater 25 people served
19 violations (5yr)
Lead tested: 5 ppb (limit: 15 ppb)

Contaminants Found

ArsenicHealth-Based

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

10 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

60 violations
Has active
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

5 violations
Has active
NitrateMonitoring

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

4 violations
All resolved
NitriteMonitoring

Similar to nitrate — harmful to infants at high levels.

4 violations
All resolved
Public NoticeMonitoring
4 violations
Has active

Lead & Copper Levels

Lead (Pb)

Within limit
1.7 ppb measured Action level: 15 ppb

Sampled: Jan 2023

How Does This Compare?

Chinle (86503) 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.

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

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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