Water Quality in San Luis, CO (81152)

EPA violation data for public water systems serving ZIP code 81152.

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

1,244

Population

6

Water Systems

30

Violations (5yr)

4

Health-Based

Location

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Water Systems Serving This Area (6)

San Luis Wsd

All resolved
Groundwater 629 people served
2 violations (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Costilla County Ws

All resolved
Groundwater 561 people served
2 violations (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Garcia Domestic Wua

2 health-based
Groundwater 100 people served
7 violations (5yr) · 2 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Viejo San Acacio

All resolved
Groundwater 45 people served
1 violation (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

San Acacio Domestic Wa

2 health-based
Groundwater 40 people served
18 violations (5yr) · 2 health-based
Lead tested: 0.5 ppb (limit: 15 ppb)

Mesita Township Wua

Groundwater 23 people served
0 violations

Contaminants Found

LEAD AND COPPER RULE REVISIONSHealth-Based
4 violations
All resolved
Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-Based
2 violations
All resolved
Public NoticeMonitoring
6 violations
Has active
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

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
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

3 violations
All resolved
Total Haloacetic Acids (HAA5)Monitoring
2 violations
All resolved
TTHMMonitoring
2 violations
All resolved
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

2 violations
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jan 2023

How Does This Compare?

San Luis (81152) has more violations than 84% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 30.

Fewer violations 84th 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

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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