Question 1

How hard is the water in District of Columbia?

Accepted Answer

The average water hardness across District of Columbia is 120 PPM (7 GPG), classified as moderately hard. Hardness varies by city - the hardest water is in Fort Mcnair (120 PPM) and the softest is in Fort Mcnair (120 PPM).

Question 2

What city in District of Columbia has the hardest water?

Accepted Answer

Fort Mcnair has the hardest water in District of Columbia at 120 PPM. A water softener is recommended for residents.

Question 3

How many water systems are in District of Columbia?

Accepted Answer

District of Columbia has 4 active community water systems serving 2 cities.

#	City	Hardness
1	Fort Mcnair	Moderately Hard (120 PPM)
2	Washington	Moderately Hard (120 PPM)

#	City	Hardness
1	Fort Mcnair	Moderately Hard (120 PPM)
2	Washington	Moderately Hard (120 PPM)

Water Hardness in District of Columbia

Top 10 Hardest Water Cities

Top 10 Softest Water Cities

All Cities in District of Columbia