Water Supply Development Analyses

Analytical Methods, Practical Detection Limits (PDL), Containers, Preservation, and Holding Times for Selected Analytes

These analyses are recommended for those developing a new water supply as a source for drinking water. This test series should be run early in the development process, as the data may prove valuable in making informed decisions about whether to continue developing this source, types of water treatment, the water's suitability for other uses, etc. You must contact the lab at (307) 742-2984 for a price quote, sample bottles and sampling instructions prior to submitting samples.

Determination	1995 Std. Methods, 19th Ed.	EPA Method No.	PDL mg/L	Container	Preservation	Holding Time Max
Cations
Calcium	3111B		0.1	Plastic/Glass	HNO₃ to pH<2	6 months
Magnesium	3111B		0.1	Plastic/Glass	HNO₃ to pH<2	6 months
Sodium	3111B		0.1	Plastic/Glass	HNO₃ to pH<2	6 months
Potassium	3111B		0.1	Plastic/Glass	HNO₃ to pH<2	6 months
Anions
Alkalinity	2320B			Plastic/Glass	Cool to 4°C	14 days
Chloride	4110B, 4500-Cl- F.	300.0	0.10	Plastic/Glass	Cool to 4°C	48 hours
Fluoride	4110B, 4500-F-F.	300.0	0.10	Plastic/Glass	Cool to 4°C	48 hours
Nitrate	4110B, 4500-NO₃- C.	300.0	0.10	Plastic/Glass	Cool to 4°C	48 hours
Nitrite	4110B, 4500- NO₂-C.	300.0	0.10	Plastic/Glass	Cool to 4°C	48 hours
Sulfate	4110B, 4500- SO₄-C.	300.0	0.10	Plastic/Glass	Cool to 4°C	48 hours
Metals
Copper	3111B		0.05	Plastic/Glass	HNO₃ to pH<2	6 months
Iron	3111B		0.05	Plastic/Glass	HNO₃ to pH<2	6 months
Lead	3111B	200.9	0.002	Plastic/Glass	HNO₃ to pH<2	6 months
Manganese	3111B		0.05	Plastic/Glass	HNO₃ to pH<2	6 months
Zinc	3111B		0.05	Plastic/Glass	HNO₃ to pH<2	6 months
Other
Conductivity	2510B		1 uS/cm	Plastic/Glass	Cool to 4°C	28 days
Corrosivity	Calculated			Plastic/Glass
Hardness, Calculated	2340B		1	Plastic/Glass	HNO₃ to pH<2	6 months
pH	4500-H+ B	150.1		Plastic/Glass	None, Cool to 4°C	14 days
Solids, TDS	by Summation			Plastic/Glass
Total Alkalinity	Calculated			Plastic/Glass		14 days