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City water profile

Horsham water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Horsham, Pennsylvania.

Median indexed hardness

84PPM

2 indexed ZIPs

Range 83.5–83.5 PPM

State comparison
At state median
State hardness rank
#34 of 50
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Horsham has 2 published ZIP profiles across Montgomery County. The indexed median is 84 PPM, compared with 84 PPM across Pennsylvania.

Among the 50 Pennsylvaniacities with an indexed median, Horsham ranks #34from highest to lowest. Across all 139 state ZIP profiles, available estimates run from 43to 166.5 PPM.

The 83.5–83.5 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard2 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
3.5 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 2Low: 0

Observation window: Jan 6, 2016 to Jun 10, 2026.

ZIP directory

Water reports in Horsham

Open a ZIP for site-level provenance and measurements.

ZIP code

19040

Moderately Hard

83.5 PPM

Nearest site
3.5 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

19044

Moderately Hard

83.5 PPM

Nearest site
1.8 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Horsham Water&sewer Authority

PWSID PA1460033

Surface water
System population served
26,000
Last reported
Jun 15, 2026

A municipal system, in-state city, and served county all agree with this Census ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Radium-228PA1460033Jul 1, 2024Resolved
BHC-GAMMAPA1460033Jan 1, 2024Resolved
DiquatPA1460033Jan 1, 2024Resolved
Di(2-ethylhexyl) adipatePA1460033Jan 1, 2024Resolved
OXAMYLPA1460033Jan 1, 2024Resolved
SimazinePA1460033Jan 1, 2024Resolved
PicloramPA1460033Jan 1, 2024Resolved
HexachlorocyclopentadienePA1460033Jan 1, 2024Resolved
CarbofuranPA1460033Jan 1, 2024Resolved
LASSOPA1460033Jan 1, 2024Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Horsham

Is the water hard?

The indexed city median is 84 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.