Centre

Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory

6/20/2007 - 7/2/2018, 991 Samples

Test Parameter	Units	Number of Samples Tested	Median	Minimum	Maximum	Number of samples failing EPA Std	Percent of samples failing EPA Std	EPA Drink Water Std
Total Coliform	MPN/100 mL	860	1.0	0.0	2419.6	476	55.3	0
E. Coli	MPN/100 mL	860	0.0	0.0	344.1	152	17.7	0
pH	-	654	7.7	5.0	9.4	58	8.9	6.5-8.5
Total Dissolved Solids	mg/L	644	241.5	20.0	1740.0	34	5.3	500
Corrosivity Index*	-	276	0.0	-5.5	2.1	204	73.9	-
Hardness	mg/L	336	123.2	0.8	1777.9	-	-	-
Nitrate+Nitrite N	mg/L	312	1.2	0.2	17.1	9	2.9	10
Chloride	mg/L	60	7.5	1.7	158.4	0	0.0	250
Sulfate	mg/L	63	13.8	3.0	113.1	0	0.0	250
Aluminum	mg/L	27	0.0	0.0	0.4	6	22.2	0.05-0.2
Arsenic	mg/L	153	0.00	0.001	0.071	13	8.5	0.01
Barium	mg/L	89	0.03	0.00	0.77	0	0.0	2
Cadmium	mg/L	29	0.00	0.001	0.002	0	0.0	0.005
Calcium	mg/L	269	27.20	0.25	540.35	-	-	-
Chromium	mg/L	29	0.0	0.001	0.005	0	0.0	0.1
Copper	mg/L	285	0.02	0.01	68.72	7	2.5	1.0,1.3
Iron	mg/L	318	0.1	0.0	95.1	52	16.4	0.3
Lead-1st draw	mg/L	98	0.00	0.003	0.108	11	11.2	0.015
Lead-Running	mg/L	161	0.003	0.003	0.103	8	5.0	0.015
Magnesium	mg/L	197	6.07	0.05	104.09	-	-	-
Manganese	mg/L	302	0.01	0.01	43.90	104	34.4	0.05
Mercury	mg/L	102	0.05	0.000	22.612	77	75.5	0.002
Nickel	mg/L	20	0.01	0.005	0.010	-	-	-
Sodium	mg/L	76	0.01	0.01	0.36	-	-	-
Zinc	mg/L	79	0.00	0.00	0.15	0	0.0	5

*For corrosivity index, failure criteria based on less than -0.5 or greater than 0.5