Recycled Water Quality Data

Recycled water produced by Delta Diablo meets all regulatory requirements for unrestricted non-potable reuse.
The Delta Diablo laboratory tests the parameters listed in the table on a monthly or quarterly basis to ensure recycled water meets the needs of our industrial and landscape irrigation customers.
Recycled Water Quality Data, the Calendar Year 2015

Constituent	Unit	Average	Range
pH	standard unit	7.2	6.8 - 7.5
Alkalinity (as CaCO3)	mg/L	278	250 - 310
Total Hardness (as CaCO3)	mg/L	230	200 - 260
Calcium	mg/L	53	43 - 80
Magnesium	mg/L	29	24 - 48
Manganese	mg/L	80	65 - 100
Potassium	mg/L	21	16 - 34
Sodium	mg/L	211	180 - 380
Conductivity	µmhos/cm	1832	1642 - 2800
Total Dissolved Solids	mg/L	924	740 - 1600
Chloride	mg/L	274	210 - 500
Sulfate	mg/L	200	160 - 230
Silica (as SiO2)	mg/L	20	16 - 26
Total Nitrogen	mg/L	45	40 - 51
Total Kjeldahl Nitrogen	mg/L	44	38 - 48
Ammonia	mg/L	41	34 - 46
Nitrate (as N)	mg/L	1.43	0.32 - 3.2
Nitrite (as N)	mg/L	1.33	0.33 - 3.3
Phosphate	mg/L	0.19	0.06 - 0.55
Total Coliform Bacteria	MPN	<2	<2 - 2
Turbidity	NTU	0.96	0.48 - 1.45

Abbreviations:

mg/L = milligrams per liter

µmhos = microhms per centimeter

µg/L = micrograms per liter

MPN = most probable number

NTU = Nephelometric Turbidity Units