Norman Tap Water Quality Report
Norman's water has 6 contaminants above EPA MCLGs. We recommend using a certified water filter.
Other systems listed for Norman with results above guidelines: STONETOWN SUNNYLANE ESTATES (3 above guidelines), OKLAHOMA CITY (2 above guidelines), NORTH LATTA PARK, LLC (2 above guidelines)
People Served
100,939
Health-based violations since 2020
0
NORMAN. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Jul 2024 · NORMAN
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Norman Tap Water Safe to Drink?
We strongly recommend using a certified water filter to reduce exposure: Norman's water has 6 contaminants above EPA health-based guidelines. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Norman's water.
NORMAN, Norman's water system, serves 100,939 people. 3 other systems are listed for Norman. Each system's results are listed under its own name, never added to NORMAN's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for NORMAN is from Jul 2024.
In EPA's 2023–2026 UCMR 5 testing, NORMAN measured lithium at up to 17.7 µg/L, which EPA counts as above its health reference level of 10 µg/L. That level is a screening value EPA uses to decide what to study further, not a legal limit, and this result does not change this page's water-quality summary.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Oklahoma
Norman Water Service Areas
What these numbers actually mean for Norman, OK
We read Norman, OK’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 6 contaminants above EPA MCLGs and 17 contaminants with an EPA health goal detected in some samples (no level on file)
- 163 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Norman
Based on Norman's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
AquaTru
Carafe
NSF Certified:
Flow Rate
0.3 gpm
Daily Production
4 gpd
Highlights:
- Verified PFAS reduction
- Glass collection vessel
- Plug-and-play installation
- NSF-53, NSF-42, NSF-58, NSF-401, NSF-372 certified
Removes 17 contaminants:
+12 more
Arsenic, 83+ contaminants, Copper, Total THMs, Chloroform, Chloride, Sulfate, Nitrate (as N), Molybdenum, Barium, Strontium, Uranium
Solventum Purification Inc.
3MRO401
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
Solventum Purification Inc.
3MRO301
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
Verify Your Water Quality with Independent Testing
With 6 contaminants above EPA MCLGs and 17 contaminants with an EPA health goal detected in some samples (no level on file), independent laboratory testing provides a second opinion and can track changes over time.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 6 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Norman's water readings can explain
Utility-reported data for Norman includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Norman, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Norman? Public-water results do not apply to private wells. See Cleveland County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Norman
Norman's tap water measures 5.5 grains per gallon (93.5 mg/L) — moderately hard on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for 5.5 gpg water in Norman — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Oklahoma as a whole, read water softener cost in Oklahoma — priced against the plumber wage published for the state.
Frequently Asked Questions About Norman Tap Water
Norman's water has 6 contaminants above EPA MCLGs. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Norman's water.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach NORMAN. For a problem with your water now (discolored water, no water, low pressure, a leak), contact NORMAN directly.
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