Greensburg, PA water hardness

Tap water hardness
57mg/L
3.3gpg
Soft

Reported by Mawc Sweeney Plant · October 2025

PA typical
127 mg/L
EPA health violations since 2016
2
Data
Utility report

Greensburg water measures 57 mg/L (3.3 gpg) of hardness, soft by USGS standards. The number comes from Mawc Sweeney Plant, dated October 2025.

Greensburg on the hardness scale, with nearby cities
060120180240300360+PA typical 127Jeannette: 66 mg/LJeannette 66Plum: 66 mg/LPlum 66Forest Hills: 90 mg/LForest Hills 90Swissvale: 90 mg/LSwissvale 90Wilkinsburg: 90 mg/LWilkinsburg 90Monroeville: 96 mg/LMonroeville 96Duquesne: 102 mg/LDuquesne 102Clairton: 102 mg/LClairton 102West Mifflin: 102 mg/LWest Mifflin 102Munhall: 102 mg/LMunhall 102Greensburg 57mg/L as calcium carbonate060120180240300360+PA 127Jeannette: 66 mg/LJeannette 66Plum: 66 mg/LPlum 66Forest Hills: 90 mg/LForest Hil. 90Monroeville: 96 mg/LMonroeville 96Duquesne: 102 mg/LDuquesne 102Clairton: 102 mg/LClairton 10257 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Greensburg sits 70 mg/L below the typical Pennsylvania figure of 127. None of the 10 nearest cities we track has softer water. The range nearby runs from 66 mg/L in Jeannette to 102 in Duquesne.

What 57 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Nothing, as far as hardness goes. At 57 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Greensburg's water system

Mawc Sweeney Plant · PWSID PA5650032

2 health-based violations since 2016

Serves about 143,000 people from surface water.

Health-based
2
Monitoring or reporting
21
Open now
0
20162017201820192020202120222023202420252026Total organic carbon removal'16'18'20'22'24'26Total organic carbon removal
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Total organic carbon removaltreatment requirement22018–2019Resolved

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Greensburg water hard?

No. It measures about 57 mg/L (3.3 grains per gallon), which the USGS classes as soft.

What is the water hardness in Greensburg in grains per gallon?

About 3.3 gpg. One grain per gallon equals 17.1 mg/L, so 57 mg/L divided by 17.1 gives 3.3.

Has the Greensburg water system had EPA violations?

EPA records show 2 health-based violations for Mawc Sweeney Plant since 2016, involving Total organic carbon removal. There were also 21 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 172 cities in Pennsylvania

Hardness data: TapWaterData US Water Hardness (utility report, October 2, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.