Water Quality in Norman, OK (74878)
EPA violation data for public water systems serving ZIP code 74878.
Past Health-Based Violations
39 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 120 monitoring/reporting violations.
More violations than 98% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
1,778
Population
18
Water Systems
159
Violations (5yr)
39
Health-Based
Location
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Water Systems Serving This Area (18)
Norman Utilities Authority
1 health-basedMoore Public Works Authority
4 health-basedOklahoma University
All resolvedShawnee Municipal Authority
3 health-basedWanette
Wanette Public Works Authority
31 health-basedSlims Ole Place Cafe
Houcks Corral
Ramons Place
Debbies Pit Stop
Big Cedars Camp
Hills Country Restaurant
Christine'S
Slims Olde Place
Tribbey Grocery
Bill'S Groc & Feed
Jims Country Corner
Corbett General Store
Contaminants Found
A naturally occurring element that can cause cancer and other health effects at high levels.
Used to disinfect water — generally safe at regulated levels.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
Copper (Cu)
Exceeds limitSampled: Jan 2023
How Does This Compare?
Norman (74878) has more violations than 98% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 159.
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.