How hard is the water in Englewood, CO?

Tap water hardness

101mg/L

5.9gpg

Moderately hard

Reported by Denver Water Board · October 2025

CO typical: 97 mg/L
EPA health violations since 2016: 1
Softener for 3 people: 24k grain
Data: Utility report

Englewood water measures 101 mg/L (5.9 gpg) of hardness, moderately hard by USGS standards. The number comes from Denver Water Board, dated October 2025.

Englewood on the hardness scale, with nearby cities

Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 101 mg/L, Englewood is close to the typical Colorado figure of 97 mg/L. None of the 10 nearest cities we track has harder water. The range nearby runs from 96 mg/L in Cherry Hills Village to 101 in Sheridan.

What 101 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Englewood

3 people × 75 gallons a day × 5.9 gpg = 1,323 grains a day. A 24,000-grain unit regenerates about every 18 days.

Size it for your household

EPA record for Englewood's water system

Englewood City of · PWSID CO0103045

1 health-based violation since 2016

Serves about 59,904 people from surface water.

Health-based: 1
Monitoring or reporting: 5
Open now: 0

EPA lists Englewood City of as the system serving Englewood. The hardness figure above comes from a different system's report, which TapWaterData uses for Englewood.

Each dot is one health-based violation, placed at the start of its compliance period.

Contaminant or rule	Violations	Period	Status
Total Coliform Rulebacteria	1	2021	Resolved

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 Englewood water hard?

Somewhat. It measures about 101 mg/L (5.9 grains per gallon), which the USGS classes as moderately hard.

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

About 5.9 gpg. One grain per gallon equals 17.1 mg/L, so 101 mg/L divided by 17.1 gives 5.9.

What size water softener do I need in Englewood?

For 3 people using 75 gallons each per day, 5.9 gpg works out to about 1,323 grains a day. A 24,000-grain softener covers that with a regeneration about every 18 days.

Has the Englewood water system had EPA violations?

EPA records show 1 health-based violation for Englewood City of since 2016, involving Total Coliform Rule. There were also 5 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 64 cities in Colorado

Hardness data: TapWaterData US Water Hardness (utility report, October 7, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.