Mill Creek Tap Water Quality Report
Mill Creek's water has 2 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
Water system
JOHNSTON CO RWD #3
People Served
2,783
Health-based violations since 2020
0
JOHNSTON CO RWD #3. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Jul 2022 · JOHNSTON CO RWD #3
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Mill Creek Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Mill Creek's water has 2 contaminants above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
JOHNSTON CO RWD #3, Mill Creek's water system, serves 2,783 people. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for JOHNSTON CO RWD #3 is from Jul 2022.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Oklahoma
Mill Creek Water Service Areas
What these numbers actually mean for Mill Creek, OK
We read Mill Creek, 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.
- 2 contaminants above EPA MCLGs and 9 contaminants with an EPA health goal detected in some samples (no level on file)
- 107 results on file
- No PFAS results on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Mill Creek's water
JOHNSTON CO RWD #3
PWSID OK2003511
JOHNSTON CO RWD #3 reported no detectable fluoride.
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Recommended Water Filters for Mill Creek
Based on Mill Creek'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
Waterdrop
G3 P600
NSF Certified:
Flow Rate
600 gpm
Daily Production
600 gpd
Highlights:
- Space-saving design
- Good contaminant reduction
- NSF-58 certified
Removes 4 contaminants:
iSpring Water Systems LLC
RCC7
NSF Certified:
Daily Production
21.04 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 21.04 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 1 contaminants:
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
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.
What Mill Creek's water readings can explain
We publish a city-level hardness figure for Mill Creek, 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 Mill Creek? Public-water results do not apply to private wells. See Johnston County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Mill Creek
Mill Creek's tap water has an estimated 14.6 grains per gallon (250.0 mg/L, county sampling in Johnston County) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for an estimated 14.6 gpg water in Mill Creek — 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 Mill Creek Tap Water
Mill Creek's water has 2 contaminants above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach JOHNSTON CO RWD #3. For a problem with your water now (discolored water, no water, low pressure, a leak), contact JOHNSTON CO RWD #3 directly.
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