America

2021.03.12

 
Place TDS
ppm
pH

Chlorine Residual

ppm

Hard Water
ppm

Turbidity

NTU

Date
Google office in Folsom 35 8.79 0.16 5 1.95 Oct 4, 2018
Fisherman's Wharf, San Francisco 32 8.27 0.14 14 2.45 Oct 4, 2018
San Francisico Air Port,USA 31 8.49 0.15 11 1.54 Oct 4, 2018
San Diego (Old Point Loma Lighthouse) 353 7.46 0.06 155 0.24 Mar 28, 2016
San Diego 335 7.43 0.08 155 0.68 Mar 28, 2016
Vernon 248 7.5 0.07 155 0.59 Mar 28, 2016
Los Angeles International Airport 294 7.37 0.05 110 0 Mar 28, 2016
Newbury Park 258 7.68 0.08 120 0 Mar 28, 2016
Hollywood Walk of Fame - TCL Chinese Theatre 350 7.88 0.06 100↑ 0.19 Jan 9, 2015
Brea 491 8.2 0.02 20   Jan 9, 2015
Santa fe Springs 233 7.68 0.02 100↑ 1.04 Jan 9, 2015
Los Angeles International Airport 266 7.57 0.02 100↑ 0.83 Jan 9, 2015
Los Angeles 422 8.18 0.05 78   Mar 25, 2014


 
Place TDS
ppm
pH

Chlorine Residual

ppm

Hard Water
ppm

Turbidity

NTU

Date
Orlando 143 7.9 0.03 93   Mar 25, 2014


 
Place TDS
ppm
pH

Chlorine Residual

ppm

Hard Water
ppm

Turbidity

NTU

Date
Boston University 86 8.16 0.03 20 1.19 Jan 9, 2015
Massachusetts Institute of Technology 311 7.24 0.01 60 0.51 Jan 9, 2015
Boston  Bus Terminal 83 8.75 0.06 20   Jan 9, 2015
Harvard University 24 6.74 0.01 20 0.56 Jan 9, 2015


 
Place TDS
ppm
pH

Chlorine Residual

ppm

Hard Water
ppm

Turbidity

NTU

Date
Times Square 39 6.69 0.02 20 2.15 Jan 9, 2015
balaboosta Restaurant 44 7.67 0.04 20 1.44 Jan 9, 2015
Woodbury Common Premium Outlets 369 7.61 0.02 100↑ 1.91 Jan 9, 2015


 
Place TDS
ppm
pH

Chlorine Residual

ppm

Hard Water
ppm

Turbidity

NTU

Date
Milwaukee 159 8.08 0.03 100↑ 0.75 Mar 25, 2014


 
Place TDS
ppm
pH

Chlorine Residual

ppm

Hard Water
ppm

Turbidity

NTU

Date
NASHVILLE Music ciy center 101 6.92 0.06 86 0 Mar 28, 2016
Nashville International Airport 93 6.56 0.57 80 0.29 Mar 28, 2016

Water Analysis of NorthAmerica_America
 
Place TDS
ppm
pH

Chlorine Residual

ppm

Hard Water
ppm

Turbidity

NTU

Date
KENO TAHOE AIRPORT RENO NEVADA U.S.A. 64 7.5 0.02 26 0 Apr 25, 2018

 



TDS
(Total dissolved solids)


Total dissolved solid (TDS) is a measure of the combined total of organic and inorganic substances contained in a liquid. This includes anything present in the water other than the pure H20 molecules. These solids are primarily minerals, salts and organic matter that can be a general indicator of water quality. Therefore, High TDS means many substances in the water.

Unitparts per million (ppm).
 

 
pH
hydrogen ion concentration


In chemistry, pH is a measure of the acidity or basicity of an aqueous solution.

 

Chlorine Residual 

That portion of the total available chlorine residual remaining in water or wastewater at the end of a specified contact period. Chlorine residual will react chemically and biologically as hypochlorous acid (HOCl) or hypochlorite ion (OCl–). This does not include chlorine that has combined with ammonia, nitrogen, or other compounds.

1. At 30 minutes after the addition of sodium hypochlorite there should be no more than 2.0 mg/L of free chlorine residua l present (this ensures the water does not have an unpleasant taste or odor).

2. At 24 hours after the addition of sodium hypochlorite to containers that are used by families to store water there should be a minimum of 0.2 mg/L of free chlorine residual present (this ensures microbiologically clean water).

Hard Water

Hardness is caused by compounds of calcium and magnesium, and by a variety of other metals. Water is an excellent solvent and readily dissolves minerals it comes in contact with. As water moves through soil and rock, it dissolves very small amounts of minerals and holds them in solution. Calcium and magnesium dissolved in water are the two most common minerals that make water "hard."

Turbidity

Turbidity is the measure of relative clarity of a liquid. It means the cloudiness or haziness of a fluid caused by large numbers of individual particles. It is an optical characteristic of water and is an expression of the amount of light that is scattered by material in the water when a light is shined through the water sample. The higher the intensity of scattered light, the higher the turbidity. That measurement of turbidity is important test of water quality.