SWAT LAB Performance Evaluation Studies for Drinking Water (2 per year)  Double Blind Testing
		WS08-2		WS07-3		WS07-2		WS06-4		WS-066		WS-065		WS-063		WS-061		WS-059		WS-055
Analyte	Method #	Reported	TRUE	Reported	TRUE	Reported	TRUE	Reported	TRUE	Reported	TRUE	Reported	TRUE	Reported	TRUE	Reported	TRUE	Reported	TRUE	Reported	TRUE
Ca	EPA 200.7	53.9	51.3	54.11	52.49	46.2	43.98			75.11	70.6	88.4	86.2	33.7	31.5	47.4	42.9	86.2	80.2	109.5	103
Ca Hard.	Calc	134.6	128.2	135.11	131.2	115.3	109.5			187.55	176	220.7	215	84.1	78.7	118.4	107	215	200	273.4	256
Mg	EPA 200.7	15.1	14.6	7.95	7.7	16	15.53			15.09	14.9	15.2	15.1	14.9	14.2	1650	1480	13610	12710	10400	9960
K	EPA 200.7	13.5	14.4	35.03	34.33	38.1	36.48			20.08	19.6	29.6	29.9	31.8	30.6	15.5	14.5	33.7	33.9	28.4	29
Na	EPA 200.7	16.6	15.4	19.27	18.26	15.6	14.38			18.89	18.6	21	20.5	24.8	23.7	15.5	13.9	15.1	14	21.3	19.9
Total Hard.	Calc	196.8	188	167.85	162	181.3	172			249.69	238	283.3	277	145.6	137	125.2	113	271	253	316.2	297
Sb	EPA 200.7-8	33.1	31.2	19.8	18.8	41.4	29.9	45.6	45.7	9.94	8	27.4	30	25.8	25	32.8	33.3	17.8	16.7	27.8	25
As	EPA 200.7-8	40.9	42.5	27.8	26.3	36.3	33.2	37.9	35.4	45.9	45	128.8	138	123	125	122	133	128	133	146	150
Ba	EPA 200.7-8	558	538	933	909	1651	1680	2518	2730	1706	1690	2015	1970	2376	2330	767	833	1737	1667	1350	1250
Be	EPA 200.7-8	1.44	2.69	7.18	6.91	8.59	8.64	3.32	2.73	7.54	7.5	7.57	8	4.9	5	7.24	6.67	1.1	1.67	2.43	2.5
Cd	EPA 200.7-8	11.8	11.8	43.8	41	27.5	27.6	42.9	43.9	27.4	27.5	47.6	50	19.4	20	33.7	33.3	10.3	10	29.1	25
Cr	EPA 200.7-8	88.3	84.1	145	132	115	105	82.9	78.3	120.5	115	14	14	59.3	55	166	167	187	183	99.5	100
Cu	EPA 200.7-8	1186	1040	789	936	1771	1738	1427	1360	1773	1710	767.5	768	1254	1190	1453	1670	1959	1967	813	750
Pb	EPA 200.7-8	97.2	93.7	69.3	63.9	91.3	83.5	20	20.2	91.7	90	88.2	84	37.8	37.5	69.9	66.7	65.5	66.7	52.1	50
Ni	EPA 200.7-8	401	391	44.7	50.6	439	400	413	400	407.1	405	321.7	312	515	485	191	200	163	167	196	200
Se	EPA 200.7-8	29.8	28.9	80.9	72.8	86.9	82.3	47.9	49.4	58.3	35	64.4	80	71.9	75	34.4	33.3	83.2	83.3	52.9	50
Tl	EPA 200.7-8	5.6	5.13	4.01	4.2	7.8	6.8	3.83	3.51	8.2	7.5			5.26	5	3.55	3.33	8.93	8.33	8.82	5
V	EPA 200.7-8	1515	1610	1911	2030	1603	1520	2219	2150	2168	2220	1203	1220	565	545	6108	7170	6555	6667	7617	7500
Al	EPA 200.7	1449	1672	667	682.1	1545	1594	1163	1192	1467	1600	216.9	220	1830	1800	2287	2330	2423	2500	2920	3300
B	EPA 200.7	1758	1888	1435	1545	1291	1269			1142	1100	1999	2000	1263	1360	267	266	977	1083	1647	1500
Fe	EPA 200.7	901	1002	622	606.2	1377	1437			1497	1470	702.5	670	174	165	3530	3330	2430	2333	3703	3500
Mn	EPA 200.7	815	793	389	379	741	738			144.7	140	602.4	580	50.3	50	828	833	826	833	620	600
Mo	EPA 200.7-8	125	117	62.8	59.49	124	110.6	126	119	111.5	110	25.5	24	82.6	80	17.1	16.7	136	133	50.9	50
Ag	EPA 200.7-8	215	224	102	103.7	203	202.9	142	155.2	114.1	120	24	26	276	290	292	300	345	333	102	100
Zn	EPA 200.7-8	2129	2300	795	1030	2104	2020	1488	1460	1953	1910	2020	1990	769	790	1574	1670	2693	2667	2877	2750
Hg	EPA 200.8	6.05	5.69	8.62	9.04	1.63	1.52	3.61	3.34					3.62	3.38	1.45	1.2	4.87	6	6.67	5.58
- Entries in gold (yellow) indicate a warning
- Entries in red indicate a missed value