Water Hardness in Collinsville, OK
Oklahoma · 1 zip codes · 9 matched water systems
City avg (weighted): 140 PPM
Dataset updated March 9, 20269 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Collinsville, OK Water Hard or Soft?
The displayed hardness for Collinsville, OK is 140 PPM (8.2 GPG) from Tulsa, classified as moderately hard. The citywide weighted average is 140 PPM.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 9 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.
Water Systems in Collinsville
These systems are matched to Collinsville, OK. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Tulsa OK1020418 | surface water | 140 PPM Moderately HardUSGS estimate: 40 PPM | |
| Broken Arrow Municipal Authority OK1021508 | surface water | 140 PPM Moderately HardUSGS estimate: 98 PPM | |
| Sand Springs OK1020420 | surface water | 140 PPM Moderately HardUSGS estimate: 98 PPM | |
| Washington Co Rwd #3 (New,#1) OK1021418 | surface water | 140 PPM Moderately HardUSGS estimate: 98 PPM | |
| Owasso OK3007218 | surface water | 140 PPM Moderately HardUSGS estimate: 98 PPM |
Zip Codes in Collinsville, OK
What This Means For You
Use this city reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.
Know your water hardness?
If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Collinsville, OK.
Frequently Asked Questions
How hard is the water in Collinsville, OK?
The citywide weighted average water hardness in Collinsville, OK is 140 PPM (8.2 GPG), classified as moderately hard. This is based on 9 matched water systems. The gauge highlights Tulsa, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Collinsville, OK?
With a citywide average hardness of 140 PPM, a water softener is worth considering for homes in Collinsville. Confirm your tap reading before sizing equipment.
Is hard water in Collinsville, OK safe to drink?
Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.
How many water systems serve Collinsville, OK?
Collinsville, Oklahoma is served by 9 matched water systems across 1 zip code.
Learn More About Your Water
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