Susceptibility Report for System ID 1610007

System Details

Water System ID	1610007
System Name	MATAGORDA COUNTY WCID 6
Address	PO BOX 316VAN VLECK, TX 774820316
County	MATAGORDA
Telephone	9792459461
PWS Type	C
Total Production	0

Ground Water Sources

Source ID	Drill Date	Top Screened Interval (Ft.)	Bottom Screened Interval (Ft.)	Pumpage Rate (GPM)	Entry Point	Operational Status
G1610007A		526	641	375	001	Operational
G1610007B		329	439	360	001	Operational

Surface Water Sources

Source ID	Type	Surface Water Body	Entry Point	Operational Status
No surface water sources

PWS System Susceptibility Summary: Contaminants with HIGH Susceptibility

The system is rated as having HIGH susceptibility to the contaminants listed below.

D.W. CONTAM. CANDIDATE LIST

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
BORON	----	Moderate	High	----	----	High	High
DDE	----	Moderate	High	----	----	----	High
DIAZINON	----	Moderate	High	----	----	----	High

INORGANICS

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
CHLORIDE	----	Moderate	Moderate	----	----	High	High
CYANIDE	----	Moderate	High	----	----	----	High
TDS	----	Moderate	High	----	----	High	High
IRON	----	Moderate	Low	----	----	High	High
MANGANESE	----	Moderate	High	----	----	High	High

INORGANICS MONITORED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
SPECIFIC CONDUCTANCE	----	Moderate	High	----	----	----	High

INORGANICS UNREGULATED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
SODIUM	----	Moderate	High	----	----	----	High

PHYSICAL

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
HARDNESS	----	Moderate	High	----	----	----	High

PHYSICAL PARAMETER

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
pH	----	Moderate	High	----	----	----	High

SOC MONITORED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
2,4,5-T	----	Moderate	High	----	----	----	High
ALDRIN	----	Moderate	High	----	----	----	High
CARBARYL	----	Moderate	High	----	----	----	High
DIELDRIN	----	Moderate	High	----	----	----	High

SOC REGULATED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
2,4,5-TP	----	Moderate	High	----	----	----	High
2,4-D	----	Moderate	High	----	----	----	High
ALACHLOR	----	Moderate	High	----	----	----	High
ATRAZINE	----	Moderate	High	----	----	----	High
BENZO(A)PYRENE	----	Moderate	High	----	----	----	High
CHLORDANE	----	Moderate	High	----	----	----	High
SIMAZINE	----	Moderate	High	----	----	----	High
ENDRIN	----	Moderate	High	----	----	----	High
GLYPHOSATE	----	Moderate	High	----	----	----	High
PENTACHLOROPHENOL	----	Moderate	High	----	----	----	High

VOC - OTHER COMPOUNDS

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
METHYL-T-BUTYL ETHER	Low	Moderate	High	----	----	----	High

VOC MONITORED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
1,3-DICHLOROBENZENE	----	Moderate	High	----	----	----	High

VOC REGULATED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TETRACHLOROETHYLENE	----	Moderate	High	----	----	----	High
TOLUENE	Low	Moderate	High	----	----	----	High
TRANS-1,2-DICHLOROETHYLENE	----	Moderate	High	----	----	----	High
TRICHLOROETHYLENE	----	Moderate	High	----	----	----	High
VINYL CHLORIDE	----	Moderate	High	----	----	----	High
XYLENES (TOTAL)	Low	Moderate	High	----	----	----	High
1,1,2-TRICHLOROETHANE	----	Moderate	High	----	----	----	High
BENZENE	Low	Moderate	High	----	----	----	High
CIS-1,2-DICHLOROETHYLENE	----	Moderate	High	----	----	----	High
DICHLOROMETHANE	----	Moderate	High	----	----	----	High
ETHYLBENZENE	Low	Moderate	High	----	----	----	High

PWS System Susceptibility Summary: Contaminants with MODERATE Susceptibility

The system is rated as having MODERATE susceptibility to the contaminants listed below.

D.W. CONTAM. CANDIDATE LIST

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TERBUFOS	----	Moderate	Moderate	----	----	----	Moderate
1,2-DIPHENYLHYDRAZINE	----	Moderate	Moderate	----	----	----	Moderate
1,3-DICHLOROPROPENE	----	Moderate	Moderate	----	----	----	Moderate
2,4,6-TRICHLOROPHENOL	----	Moderate	Moderate	----	----	----	Moderate
2,4-DICHLOROPHENOL	----	Moderate	Moderate	----	----	----	Moderate
2,4-DINITROPHENOL	----	Moderate	Moderate	----	----	----	Moderate
2,4-DINITROTOLUENE	----	Moderate	Moderate	----	----	----	Moderate
2,6-DINITROTOLUENE	----	Moderate	Moderate	----	----	----	Moderate
2-METHYLPHENOL	----	Moderate	Moderate	----	----	----	Moderate
ACETOCHLOR	----	Moderate	Moderate	----	----	----	Moderate
CYANAZINE	----	Moderate	Moderate	----	----	----	Moderate
DCPA DI-ACID DEGRADATE	----	Moderate	Moderate	----	----	----	Moderate
TERBACIL	----	Moderate	Moderate	----	----	----	Moderate
DCPA MONO-ACID DEGRADATE	----	Moderate	Moderate	----	----	----	Moderate
DISULFOTON	----	Moderate	Moderate	----	----	----	Moderate
DIURON	----	Moderate	Moderate	----	----	----	Moderate
EPTC	----	Moderate	Moderate	----	----	----	Moderate
FONOFOS	----	Moderate	Moderate	----	----	----	Moderate
LINURON	----	Moderate	Moderate	----	----	----	Moderate
MOLINATE	----	Moderate	Moderate	----	----	----	Moderate
NITROBENZENE	----	Moderate	Moderate	----	----	----	Moderate
ORGANOTINS	----	Moderate	Moderate	----	----	----	Moderate
PERCHLORATE	----	Moderate	Moderate	----	----	----	Moderate
PROPAZINE	----	Moderate	Moderate	----	----	----	Moderate
RDX	----	Moderate	Moderate	----	----	----	Moderate

INORGANICS

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
THALLIUM	----	Moderate	Low	----	----	----	Moderate
ZINC	----	Moderate	Moderate	----	----	----	Moderate
ALUMINUM	----	Moderate	Low	----	----	----	Moderate
ANTIMONY	----	Moderate	----	----	----	----	Moderate
ARSENIC	----	Moderate	Low	----	----	----	Moderate
ASBESTOS	----	Moderate	----	----	----	----	Moderate
BARIUM	----	Moderate	Low	----	----	----	Moderate
BERYLLIUM	----	Moderate	----	----	----	----	Moderate
BROMIDE	----	Moderate	Moderate	----	----	----	Moderate
CADMIUM	----	Moderate	----	----	----	----	Moderate
CHROMIUM	----	Moderate	----	----	----	----	Moderate
COPPER	----	Moderate	----	----	----	----	Moderate
SULFATE	----	Moderate	Low	----	----	----	Moderate
FLUORIDE	----	Moderate	----	----	----	----	Moderate
HYDROGEN SULFIDE	----	Moderate	Moderate	----	----	----	Moderate
LEAD	Low	Moderate	Low	----	----	----	Moderate
MERCURY	----	Moderate	Low	----	----	----	Moderate
NICKEL	----	Moderate	Low	----	----	----	Moderate
NITRATE	----	Moderate	Low	----	----	----	Moderate
NITRATE+NITRITE	----	Moderate	Low	----	----	----	Moderate
NITRITE	----	Moderate	Low	----	----	----	Moderate
SELENIUM	----	Moderate	Low	----	----	----	Moderate
SILVER	----	Moderate	----	----	----	----	Moderate

INORGANICS MONITORED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
ALKALINITY	----	Moderate	----	----	----	----	Moderate
BICARBONATE	----	Moderate	----	----	----	----	Moderate
CARBONATE	----	Moderate	----	----	----	----	Moderate
MAGNESIUM	----	Moderate	Moderate	----	----	----	Moderate

INORGANICS UNREGULATED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
CALCIUM	----	Moderate	Moderate	----	----	----	Moderate

RADIOCHEM

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TRITIUM	----	Moderate	Moderate	----	----	----	Moderate
STRONTIUM-90	----	Moderate	Moderate	----	----	----	Moderate
GROSS ALPHA	----	Moderate	Moderate	----	----	----	Moderate
GROSS BETA	----	Moderate	Moderate	----	----	----	Moderate
RADIUM-226	----	Moderate	Moderate	----	----	----	Moderate
RADIUM-228	----	Moderate	Moderate	----	----	----	Moderate

RADIOCHEM UNREGULATED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
URANIUM	----	Moderate	Moderate	----	----	----	Moderate
STRONTIUM-89	----	Moderate	Moderate	----	----	----	Moderate
RADON	----	Moderate	Moderate	----	----	----	Moderate

SOC MONITORED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TRIFLURALIN	----	Moderate	Moderate	----	----	----	Moderate
3-HYDROXYCARBOFURAN	----	Moderate	Moderate	----	----	----	Moderate
ACENAPHTHENE	----	Moderate	Moderate	----	----	----	Moderate
ACENAPHTHYLENE	----	Moderate	Moderate	----	----	----	Moderate
ANTHRACENE	----	Moderate	Moderate	----	----	----	Moderate
BENTAZON	----	Moderate	Moderate	----	----	----	Moderate
BENZO[A]ANTHRACENE	----	Moderate	----	----	----	----	Moderate
BENZO[B]FLUORANTHENE	----	Moderate	Moderate	----	----	----	Moderate
BENZO[G,H,I]PERYLENE	----	Moderate	Moderate	----	----	----	Moderate
BENZO[K]FLUORANTHENE	----	Moderate	----	----	----	----	Moderate
BROMACIL	----	Moderate	Moderate	----	----	----	Moderate
BUTACHLOR	----	Moderate	Moderate	----	----	----	Moderate
BUTYL BENZYL PHTHALATE	----	Moderate	Moderate	----	----	----	Moderate
CHRYSENE	----	Moderate	Moderate	----	----	----	Moderate
DIBENZ[A,H]ANTHRACENE	----	Moderate	----	----	----	----	Moderate
DICAMBA	----	Moderate	Moderate	----	----	----	Moderate
DIETHYL PHTHALATE	----	Moderate	Moderate	----	----	----	Moderate
DIMETHYL PHTHALATE	----	Moderate	Moderate	----	----	----	Moderate
DI-N-BUTYL PHTHALATE	----	Moderate	Moderate	----	----	----	Moderate
FLUORENE	----	Moderate	Moderate	----	----	----	Moderate
INDENO[1,2,3,CD]PYRENE	----	Moderate	----	----	----	----	Moderate
LAMBAST	----	Moderate	Moderate	----	----	----	Moderate
METHIOCARB	----	Moderate	Moderate	----	----	----	Moderate
METHOMYL	----	Moderate	Moderate	----	----	----	Moderate
METOLACHLOR	----	Moderate	Moderate	----	----	----	Moderate
METRIBUZIN	----	Moderate	Moderate	----	----	----	Moderate
PHENANTHRENE	----	Moderate	Moderate	----	----	----	Moderate
PROMETON	----	Moderate	Moderate	----	----	----	Moderate
PROPACHLOR	----	Moderate	Moderate	----	----	----	Moderate
PYRENE	----	Moderate	Moderate	----	----	----	Moderate

SOC REGULATED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TOXAPHENE	----	Moderate	Moderate	----	----	----	Moderate
2,3,7,8-TCDD	----	Moderate	----	----	----	----	Moderate
ALDICARB	----	Moderate	Moderate	----	----	----	Moderate
ALDICARB SULFONE	----	Moderate	Moderate	----	----	----	Moderate
ALDICARB SULFOXIDE	----	Moderate	Moderate	----	----	----	Moderate
CARBOFURAN	----	Moderate	Moderate	----	----	----	Moderate
CHLORDANE (ALPHA-CHLORDANE)	----	Moderate	Moderate	----	----	----	Moderate
CHLORDANE (GAMMA-CHLORDANE)	----	Moderate	Moderate	----	----	----	Moderate
CHLORDANE (TRANS-NONACHLOR)	----	Moderate	Moderate	----	----	----	Moderate
DALAPON	----	Moderate	Moderate	----	----	----	Moderate
DI-(2-ETHYLHEXYL)ADIPATE	----	Moderate	Moderate	----	----	----	Moderate
DI-(2-ETHYLHEXYL)PHTHALATE	----	Moderate	Moderate	----	----	----	Moderate
DIBROMOCHLOROPROPANE	----	Moderate	Moderate	----	----	----	Moderate
DINOSEB	----	Moderate	Moderate	----	----	----	Moderate
DIQUAT	----	Moderate	Moderate	----	----	----	Moderate
ENDOTHALL	----	Moderate	Moderate	----	----	----	Moderate
ETHYLENE DIBROMIDE	----	Moderate	----	----	----	----	Moderate
HEPTACHLOR	----	Moderate	Moderate	----	----	----	Moderate
HEPTACHLOR EPOXIDE	----	Moderate	Moderate	----	----	----	Moderate
HEXACHLOROBENZENE	----	Moderate	Moderate	----	----	----	Moderate
HEXACHLOROCYCLOPENTADIENE	----	Moderate	Moderate	----	----	----	Moderate
LINDANE	----	Moderate	Moderate	----	----	----	Moderate
METHOXYCHLOR	----	Moderate	Moderate	----	----	----	Moderate
OXAMYL	----	Moderate	Moderate	----	----	----	Moderate
PCBs	----	Moderate	Moderate	----	----	----	Moderate
PICLORAM	----	Moderate	Moderate	----	----	----	Moderate

THM

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
BROMOCHLOROMETHANE	----	Moderate	----	----	----	----	Moderate
BROMODICHLOROMETHANE	----	Moderate	----	----	----	----	Moderate
BROMOFORM	----	Moderate	Moderate	----	----	----	Moderate
BROMOMETHANE	----	Moderate	Moderate	----	----	----	Moderate
CHLOROFORM	----	Moderate	Moderate	----	----	----	Moderate
DIBROMOCHLOROMETHANE	----	Moderate	----	----	----	----	Moderate

VOC - OTHER COMPOUNDS

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TETRAHYDROFURAN	----	Moderate	Moderate	----	----	----	Moderate
VINYL ACETATE	----	Moderate	Moderate	----	----	----	Moderate
2-HEXANONE	----	Moderate	Moderate	----	----	----	Moderate
4-METHYL-2-PENTANONE (MIBK)	----	Moderate	Moderate	----	----	----	Moderate
ACETONE	----	Moderate	Moderate	----	----	----	Moderate
ACRYLONITRILE	----	Moderate	Moderate	----	----	----	Moderate
CARBON DISULFIDE	----	Moderate	Moderate	----	----	----	Moderate
ETHYL METHACRYLATE	----	Moderate	Moderate	----	----	----	Moderate
METHYL IODIDE (IODOMETHANE)	----	Moderate	Moderate	----	----	----	Moderate
METHYL ETHYL KETONE	----	Moderate	Moderate	----	----	----	Moderate
METHYL METHACRYLATE	----	Moderate	Moderate	----	----	----	Moderate

VOC MONITORED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TRANS-1,3-DICHLOROPROPENE	----	Moderate	Moderate	----	----	----	Moderate
TRICHLOROFLUOROMETHANE	----	Moderate	Moderate	----	----	----	Moderate
1,1,1,2-TETRACHLOROETHANE	----	Moderate	Moderate	----	----	----	Moderate
1,1,2,2-TETRACHLOROETHANE	----	Moderate	Moderate	----	----	----	Moderate
1,1-DICHLOROETHANE	----	Moderate	Moderate	----	----	----	Moderate
1,1-DICHLOROPROPENE	----	Moderate	Moderate	----	----	----	Moderate
1,2,3-TRICHLOROBENZENE	----	Moderate	Moderate	----	----	----	Moderate
1,2,3-TRICHLOROPROPANE	----	Moderate	Moderate	----	----	----	Moderate
1,2,4-TRIMETHYLBENZENE	Low	Moderate	Moderate	----	----	----	Moderate
1,3,5-TRIMETHYLBENZENE	----	Moderate	Moderate	----	----	----	Moderate
1,3-DICHLOROPROPANE	----	Moderate	Moderate	----	----	----	Moderate
2,2-DICHLOROPROPANE	----	Moderate	----	----	----	----	Moderate
2-CHLOROTOLUENE	----	Moderate	Moderate	----	----	----	Moderate
4-CHLOROTOLUENE	----	Moderate	Moderate	----	----	----	Moderate
4-ISOPROPYLTOLUENE	----	Moderate	Moderate	----	----	----	Moderate
BROMOBENZENE	----	Moderate	----	----	----	----	Moderate
CHLOROETHANE	----	Moderate	Moderate	----	----	----	Moderate
CHLOROMETHANE	----	Moderate	Moderate	----	----	----	Moderate
CIS-1,3-DICHLOROPROPENE	----	Moderate	Moderate	----	----	----	Moderate
T-BUTYLBENZENE	----	Moderate	----	----	----	----	Moderate
DIBROMOMETHANE	----	Moderate	Moderate	----	----	----	Moderate
DICHLORODIFLUOROMETHANE	----	Moderate	Moderate	----	----	----	Moderate
HEXACHLOROBUTADIENE	----	Moderate	Moderate	----	----	----	Moderate
ISOPROPYLBENZENE	----	Moderate	Moderate	----	----	----	Moderate
M + P XYLENE	Low	Moderate	Moderate	----	----	----	Moderate
NAPHTHALENE	Low	Moderate	Moderate	----	----	----	Moderate
N-BUTYLBENZENE	----	Moderate	----	----	----	----	Moderate
N-PROPYLBENZENE	----	Moderate	----	----	----	----	Moderate
S-BUTYLBENZENE	----	Moderate	Moderate	----	----	----	Moderate

VOC REGULATED

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
1,1,1-TRICHLOROETHANE	----	Moderate	Moderate	----	----	----	Moderate
1,1-DICHLOROETHYLENE	----	Moderate	Moderate	----	----	----	Moderate
1,2,4-TRICHLOROBENZENE	----	Moderate	Moderate	----	----	----	Moderate
1,2-DICHLOROETHANE	----	Moderate	Moderate	----	----	----	Moderate
1,2-DICHLOROPROPANE	----	Moderate	Moderate	----	----	----	Moderate
CARBON TETRACHLORIDE	----	Moderate	Moderate	----	----	----	Moderate
CHLOROBENZENE (MONOCHLORBENZENE)	----	Moderate	Moderate	----	----	----	Moderate
STYRENE	----	Moderate	Moderate	----	----	----	Moderate
MONOCHLOROBENZENE (CHLOROBENZENE )	----	Moderate	Moderate	----	----	----	Moderate
M-XYLENE	Low	Moderate	Moderate	----	----	----	Moderate
ORTHO-1,2-DICHLOROBENZENE	----	Moderate	Moderate	----	----	----	Moderate
O-XYLENE	Low	Moderate	Moderate	----	----	----	Moderate
PARA-1,4-DICHLOROBENZENE	----	Moderate	Moderate	----	----	----	Moderate
P-XYLENE	Low	Moderate	Moderate	----	----	----	Moderate

Other

Contaminant Name	Structural Integrity	Aquifer/Watershed Properties	Nonpoint Source	Point Source	Area Primary Influence	Contaminant Occurrence	Summary
TOTAL ALPHA EMITTING RADIUM	----	Moderate	Moderate	----	----	----	Moderate
TOTAL COLIFORM	----	Moderate	Moderate	----	----	----	Moderate
TOTAL TRIHALOMETHANE	----	Moderate	----	----	----	----	Moderate
TRIAZINES	----	Moderate	Moderate	----	----	----	Moderate
AROCLOR (PCB)	----	Moderate	Moderate	----	----	----	Moderate
CRYPTOSPORIDIUM PARVUM	----	Moderate	Moderate	----	----	----	Moderate
ESCHERICHIA COLI	----	Moderate	Moderate	----	----	----	Moderate
FECAL VIRUSES	----	Moderate	Moderate	----	----	----	Moderate
GIARDIA LAMBLIA	----	Moderate	Moderate	----	----	----	Moderate
P-ALKALINITY	----	Moderate	----	----	----	----	Moderate

Source Details: G1610007A

Leaflet Tiles © Esri — Esri, DeLorme, NAVTEQ, TomTom, Intermap, iPC, USGS, FAO, NPS, NRCAN, GeoBase, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), and the GIS User Community

Contaminants with HIGH Susceptibility

No contaminants with high susceptibility.

Contaminants with MODERATE Susceptibility

No contaminants with moderate susceptibility.

Source Details: G1610007B

Contaminants with HIGH Susceptibility

No contaminants with high susceptibility.

Contaminants with MODERATE Susceptibility

No contaminants with moderate susceptibility.

Contaminant List

List of regulated and unregulated assessed contaminants grouped by contaminant class. TCEQ Chapter 290 Subchapter F rules are cited for each drinking water standard (secondary drinking water standards are italicized). The TCEQ threshold limit is the concentration used within the contaminant occurrence component to determine if a detection of the chemical was found during water quality monitoring activities. The chemical abstract service (CAS) number is a unique identifier for each chemical.

D.W. CONTAM. CANDIDATE LIST

Contaminant Name	Drinking Water Standard	TCEQ Threshold	CAS Number
CYANAZINE		0.01 ug/L	21725-46-2
DCPA DI-ACID DEGRADATE		0.00 ug/L	2136-79-0
BORON	2.20 mg/L	10.00 ug/L	11113-50-1
2,4,6-TRICHLOROPHENOL	0.08 mg/L	20.00 ug/L	88-06-2
2,4-DICHLOROPHENOL	0.07 mg/L	20.00 ug/L	120-83-2
2,4-DINITROPHENOL	0.05 mg/L	20.00 ug/L	51-28-5
2,4-DINITROTOLUENE	0.00 mg/L	5.00 ug/L	121-14-2
2,6-DINITROTOLUENE	0.00 mg/L	5.00 ug/L	606-20-2
2-METHYLPHENOL	0.05 mg/L	5.00 ug/L	95-48-7
ACETOCHLOR		0.01 ug/L	34256-82-1
1,2-DIPHENYLHYDRAZINE	0.00 mg/L	0.10 ug/L	122-66-7
1,3-DICHLOROPROPENE	0.01 mg/L	0.10 ug/L	542-75-6
PROPAZINE		0.01 ug/L	139-40-2
RDX	0.01 mg/L	0.10 ug/L	121-82-4
TERBACIL		0.01 ug/L	5902-51-2
TERBUFOS		0.01 ug/L	13071-79-9
DCPA MONO-ACID DEGRADATE		0.00 ug/L	887-54-7
DDE	0.00 mg/L	0.01 ug/L	72-55-9
DIAZINON	0.02 mg/L	0.01 ug/L	333-41-5
DISULFOTON	0.00 mg/L	0.01 ug/L	298-04-4
DIURON	0.05 mg/L	0.05 ug/L	330-54-1
EPTC	0.61 mg/L	0.01 ug/L	759-94-4
FONOFOS		0.01 ug/L	944-22-9
LINURON		0.01 ug/L	330-55-2
MOLINATE	0.05 mg/L	0.01 ug/L	2212-67-1
NITROBENZENE	0.01 mg/L	0.10 ug/L	98-95-3
ORGANOTINS
PERCHLORATE			14797-73-0

INORGANICS

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
CHLORIDE		§290.113	125.00 mg/L	16887-00-6
CHROMIUM	0.10 mg/L	§290.103(1)	50.00 ug/L	11104-59-9
COPPER	1.30 mg/L	§290.120	65.00 ug/L	17493-86-6
CYANIDE	0.20 mg/L	§290.103(1)	0.01 mg/L	57-12-5
BERYLLIUM	0.00 mg/L	§290.103(1)	2.00 ug/L	14701-08-7
BROMIDE
CADMIUM	0.01 mg/L	§290.103(1)	2.50 ug/L	22537-48-0
ALUMINUM	24.44 mg/L	§290.113	0.10 ug/L	14903-36-7
ANTIMONY	0.01 mg/L	§290.103(1)	3.00 ug/L	64924-52-3
ARSENIC	0.05 mg/L	§290.103(1)	10.00 ug/L	15584-04-0
ASBESTOS	7.00 mg/L		-9,999.00 ug/L	1332-21-4
BARIUM	2.00 mg/L	§290.103(1)	1,000.00 ug/L	16541-35-8
SELENIUM	0.05 mg/L	§290.103(1)	25.00 ug/L	7782-49-2
SILVER	0.12 mg/L	§290.113	25.00 ug/L	14701-21-4
SULFATE	500.00 mg/L	§290.113	125.00 mg/L	14808-79-8
TDS		§290.113	250.00 mg/L
THALLIUM	0.00 mg/L	§290.103(1)	1.00 ug/L	7440-28-0
ZINC	7.33 mg/L	§290.113	2.50 ug/L	15176-26-8
FLUORIDE	4.00 mg/L	§290.103(1)	2.00 mg/L	16984-48-8
HYDROGEN SULFIDE		§290.113	0.00 mg/L	15035-72-0
IRON		§290.113	150.00 ug/L	15438-31-0
LEAD	0.02 mg/L	§290.120	0.00 ug/L	14701-27-0
MANGANESE	1.15 mg/L	§290.113	25.00 ug/L	14333-14-3
MERCURY	0.00 mg/L	§290.103(1)	1.00 ug/L	14302-87-5
NICKEL	0.49 mg/L	§290.103(1)	50.00 ug/L	14701-22-5
NITRATE	10.00 mg/L	§290.103(1)	3.00 mg/L	14797-55-8
NITRATE+NITRITE	10.00 mg/L	§290.103(1)	3.00 mg/L	none
NITRITE	1.00 mg/L	§290.103(1)	0.50 mg/L	14797-65-0

INORGANICS MONITORED

Contaminant Name	TCEQ Threshold	CAS Number
CARBONATE	1.00 mg/L	3812-32-6
BICARBONATE	1.00 mg/L	71-52-3
ALKALINITY	1.00 mg/L
SPECIFIC CONDUCTANCE	1.00 uS/cm
MAGNESIUM	0.01 mg/L	14581-92-1

INORGANICS UNREGULATED

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
CALCIUM			0.02 mg/L	14102-48-8
SODIUM			0.20 mg/L	17341-25-2

PHYSICAL

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
HARDNESS			1.00 mg/L

PHYSICAL PARAMETER

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
pH		§290.113	0.10 pH

RADIOCHEM

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
RADIUM-226	5.00 mg/L	§290.110	1.00 pCi/L	13982-63-3
RADIUM-228	5.00 mg/L	§290.110	0.50 pCi/L	15262-20-1
STRONTIUM-90		§290.110	0.50 pCi/L	10098-97-2
TRITIUM		§290.110	1.00 pCi/L	15086-10-9
GROSS ALPHA	15.00 mg/L	§290.110	3.00 pCi/L
GROSS BETA	4.00 mg/L	§290.110	3.00 pCi/L

RADIOCHEM UNREGULATED

Contaminant Name	Drinking Water Standard	TCEQ Threshold	CAS Number
RADON	300.00 mg/L	0.50 pCi/L	10043-92-2
STRONTIUM-89		0.50 pCi/L	14701-18-9
URANIUM	0.02 mg/L	1.00 ug/L	none

SOC MONITORED

Contaminant Name	Drinking Water Standard	TCEQ Threshold	CAS Number
CHRYSENE	0.13 mg/L	0.10 ug/L	218-01-9
BENZO[B]FLUORANTHENE	0.00 mg/L	10.00 ug/L	205-99-2
BENZO[G,H,I]PERYLENE	0.73 mg/L	10.00 ug/L	191-24-2
BENZO[K]FLUORANTHENE	0.01 μg/L	10.00 ug/L	207-08-9
BROMACIL		0.05 ug/L	314-40-9
BUTACHLOR		0.05 ug/L	23184-66-9
BUTYL BENZYL PHTHALATE	4.89 mg/L	5.00 ug/L	85-68-7
CARBARYL	2.44 mg/L	0.01 ug/L	63-25-2
2,4,5-T	0.24 mg/L	0.05 ug/L	93-76-5
3-HYDROXYCARBOFURAN		0.05 ug/L	16655-82-6
ACENAPHTHENE	1.47 mg/L	5.00 ug/L	83-32-9
ACENAPHTHYLENE	1.47 mg/L	5.00 ug/L	208-96-8
ALDRIN	0.00 mg/L	0.10 ug/L	309-00-2
ANTHRACENE	7.33 mg/L	5.00 ug/L	120-12-7
BENTAZON		0.05 ug/L	25057-89-0
BENZO[A]ANTHRACENE	0.00 mg/L	10.00 ug/L	56-55-3
PHENANTHRENE		5.00 ug/L	85-01-8
PROMETON		0.01 ug/L	1610-18-0
PROPACHLOR		0.01 ug/L	1918-16-7
PYRENE	0.73 mg/L	0.10 ug/L	129-00-0
TRIFLURALIN	0.12 mg/L	0.01 ug/L	1582-09-8
DIBENZ[A,H]ANTHRACENE	0.00 mg/L	10.00 ug/L	53-70-3
DICAMBA	0.73 mg/L	0.05 ug/L	1918-00-9
DIELDRIN	0.00 mg/L	0.01 ug/L	60-57-1
DIETHYL PHTHALATE	19.55 mg/L	5.00 ug/L	84-66-2
DIMETHYL PHTHALATE	19.55 mg/L	5.00 ug/L	131-11-3
DI-N-BUTYL PHTHALATE	2.44 mg/L	5.00 ug/L	84-74-2
FLUORENE	0.98 mg/L	0.10 ug/L	86-73-7
INDENO[1,2,3,CD]PYRENE		10.00 ug/L	193-39-5
LAMBAST		0.05 ug/L	845-52-3
METHIOCARB		0.05 ug/L	2032-65-7
METHOMYL	0.61 mg/L	0.05 ug/L	16752-77-5
METOLACHLOR	3.67 mg/L	0.01 ug/L	51218-45-2
METRIBUZIN		0.01 ug/L	21087-64-9

SOC REGULATED

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
CHLORDANE	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	57-74-9
CHLORDANE (ALPHA-CHLORDANE)	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	5103-71-9
CHLORDANE (GAMMA-CHLORDANE)	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	12789-03-6
CHLORDANE (TRANS-NONACHLOR)	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	39765-80-5
DALAPON	0.20 mg/L	§290.103(3)(A)	0.05 mg/L	75-99-0
CARBOFURAN	0.04 mg/L	§290.103(3)(A)	0.01 ug/L	1563-66-2
2,3,7,8-TCDD	0.00 mg/L	§290.103(3)(A)	0.10 mg/L	1746-01-6
2,4,5-TP	0.05 mg/L	§290.103(3)(A)	0.05 ug/L	93-72-1
2,4-D	0.07 mg/L	§290.103(3)(A)	0.15 ug/L	94-75-7
ALACHLOR	0.00 mg/L	§290.103(3)(A)	0.01 ug/L	15972-60-8
ALDICARB	0.01 mg/L	§290.103(3)(A)	0.55 ug/L	116-06-3
ALDICARB SULFONE	0.01 mg/L	§290.103(3)(A)	0.10 ug/L	1646-88-4
ALDICARB SULFOXIDE	0.01 mg/L	§290.103(3)(A)	0.05 ug/L	1646-87-3
ATRAZINE	0.00 mg/L	§290.103(3)(A)	0.01 ug/L	1912-24-9
BENZO(A)PYRENE	0.00 mg/L	§290.103(3)(A)	10.00 ug/L	50-32-8
PICLORAM	0.50 mg/L	§290.103(3)(A)	0.05 ug/L	1918-02-1
SIMAZINE	0.00 mg/L		0.01 ug/L	122-34-9
TOXAPHENE	0.00 mg/L	§290.103(3)(A)	2.00 ug/L	8001-35-2
DI-(2-ETHYLHEXYL)ADIPATE	0.40 mg/L	§290.103(3)(A)	5.00 ug/L	103-23-1
DI-(2-ETHYLHEXYL)PHTHALATE	0.01 mg/L	§290.103(3)(A)	5.00 ug/L	117-81-7
DIBROMOCHLOROPROPANE	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	67708-83-2
DINOSEB	0.01 mg/L	§290.103(3)(A)	0.05 ug/L	88-85-7
DIQUAT	0.02 mg/L	§290.103(3)(A)	0.05 mg/L	2764-72-9
ENDOTHALL	0.10 mg/L	§290.103(3)(A)	0.05 ug/L	145-73-3
ENDRIN	0.00 mg/L	§290.103(3)(A)	0.05 ug/L	72-20-8
ETHYLENE DIBROMIDE	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	106-93-4
GLYPHOSATE	0.70 mg/L	§290.103(3)(A)	0.05 ug/L	1071-83-6
HEPTACHLOR	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	76-44-8
HEPTACHLOR EPOXIDE	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	1024-57-3
HEXACHLOROBENZENE	0.00 mg/L	§290.103(3)(A)	5.00 ug/L	118-74-1
HEXACHLOROCYCLOPENTADIENE	0.05 mg/L	§290.103(3)(A)	5.00 ug/L	77-47-4
LINDANE	0.00 mg/L	§290.103(3)(A)	0.01 ug/L	58-89-9
METHOXYCHLOR	0.04 mg/L	§290.103(3)(A)	0.05 ug/L	72-43-5
OXAMYL	0.20 mg/L	§290.103(3)(A)	0.05 ug/L	23135-22-0
PCBs	0.00 mg/L	§290.103(3)(A)	0.10 ug/L	53469-21-9
PENTACHLOROPHENOL	0.00 mg/L	§290.103(3)(A)	30.00 ug/L	87-86-5

THM

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
CHLOROFORM	0.10 mg/L	§290.116	0.10 ug/L	67-66-3
BROMOCHLOROMETHANE	0.98 mg/L		0.10 ug/L	74-97-5
BROMODICHLOROMETHANE	0.10 mg/L	§290.116	0.10 ug/L	75-27-4
BROMOFORM	0.10 mg/L	§290.116	0.10 ug/L	75-25-2
BROMOMETHANE	0.03 mg/L		0.10 ug/L	74-83-9
DIBROMOCHLOROMETHANE	0.10 mg/L	§290.116	0.10 ug/L	124-48-1

VOC - OTHER COMPOUNDS

Contaminant Name	Drinking Water Standard	TCEQ Threshold	CAS Number
CARBON DISULFIDE	2.44 mg/L	0.10 ug/L	75-15-0
2-HEXANONE	1.47 mg/L	0.10 ug/L	591-78-6
4-METHYL-2-PENTANONE (MIBK)	1.96 mg/L	0.10 ug/L	108-10-1
ACETONE	2.44 mg/L	0.10 ug/L	67-64-1
ACRYLONITRILE	0.00 mg/L	0.10 ug/L	107-13-1
TETRAHYDROFURAN	0.12 mg/L	0.10 ug/L	109-99-9
VINYL ACETATE	24.44 mg/L	0.10 ug/L	108-05-4
ETHYL METHACRYLATE	2.20 mg/L	0.10 ug/L	97-63-2
METHYL IODIDE (IODOMETHANE)	0.03 mg/L	0.10 ug/L	74-88-4
METHYL ETHYL KETONE	14.67 mg/L	0.10 ug/L	78-93-3
METHYL METHACRYLATE	34.22 mg/L	0.10 ug/L	80-62-6
METHYL-T-BUTYL ETHER	0.24 mg/L	0.10 ug/L	1634-04-4

VOC MONITORED

Contaminant Name	Drinking Water Standard	TCEQ Threshold	CAS Number
CHLOROETHANE	9.78 mg/L	0.10 ug/L	75-00-3
CHLOROMETHANE	0.07 mg/L	0.10 ug/L	74-87-3
CIS-1,3-DICHLOROPROPENE	0.00 mg/L	0.10 ug/L	10061-01-5
BROMOBENZENE	0.49 mg/L	0.10 ug/L	108-86-1
2-CHLOROTOLUENE	0.49 mg/L	0.10 ug/L	95-49-8
4-CHLOROTOLUENE	0.49 mg/L	0.10 ug/L	106-43-4
4-ISOPROPYLTOLUENE	2.44 mg/L	0.10 ug/L	99-87-6
1,1,1,2-TETRACHLOROETHANE	0.04 mg/L	0.10 ug/L	630-20-6
1,1,2,2-TETRACHLOROETHANE	0.17 mg/L	0.10 ug/L	79-34-5
1,1-DICHLOROETHANE	2.44 mg/L	0.10 ug/L	75-34-3
1,1-DICHLOROPROPENE	0.01 mg/L	0.10 ug/L	563-58-6
1,2,3-TRICHLOROBENZENE	0.07 mg/L	0.10 ug/L	87-61-6
1,2,3-TRICHLOROPROPANE	0.00 mg/L	0.10 ug/L	96-18-4
1,2,4-TRIMETHYLBENZENE	1.22 mg/L	0.10 ug/L	95-63-6
1,3,5-TRIMETHYLBENZENE	1.22 mg/L	0.10 ug/L	108-67-8
1,3-DICHLOROBENZENE	0.73 mg/L	0.10 ug/L	541-73-1
1,3-DICHLOROPROPANE	0.01 mg/L	0.10 ug/L	142-28-9
2,2-DICHLOROPROPANE		0.10 ug/L	594-20-7
S-BUTYLBENZENE	0.98 mg/L	0.10 ug/L	135-98-8
T-BUTYLBENZENE	0.98 mg/L	0.10 ug/L	98-06-6
TRANS-1,3-DICHLOROPROPENE	0.01 mg/L	0.10 ug/L	10061-02-6
TRICHLOROFLUOROMETHANE	7.33 mg/L	0.10 ug/L	75-69-4
DIBROMOMETHANE	0.12 mg/L	0.10 ug/L	74-95-3
DICHLORODIFLUOROMETHANE	4.89 mg/L	0.10 ug/L	75-71-8
HEXACHLOROBUTADIENE	0.00 μg/L	0.10 ug/L	87-68-3
ISOPROPYLBENZENE	2.44 mg/L	0.10 ug/L	98-82-8
M + P XYLENE		0.10 ug/L	106-42-3
NAPHTHALENE	0.49 mg/L	0.10 ug/L	91-20-3
N-BUTYLBENZENE	0.98 mg/L	0.10 ug/L	104-51-8
N-PROPYLBENZENE	0.98 mg/L	0.10 ug/L	103-65-1

VOC REGULATED

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
CHLOROBENZENE (MONOCHLORBENZENE)	0.10 mg/L		0.10 ug/L	108-90-7
CIS-1,2-DICHLOROETHYLENE	0.07 mg/L	§290.103(3)(B)	0.10 ug/L	156-59-2
CARBON TETRACHLORIDE	0.00 mg/L	§290.103(3)(B)	0.10 ug/L	56-23-5
1,1,1-TRICHLOROETHANE	0.20 mg/L	§290.103(3)(B)	0.10 ug/L	71-55-6
1,1,2-TRICHLOROETHANE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	79-00-5
1,1-DICHLOROETHYLENE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	75-35-4
1,2,4-TRICHLOROBENZENE	0.07 mg/L	§290.103(3)(B)	0.10 ug/L	120-82-1
1,2-DICHLOROETHANE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	107-06-2
1,2-DICHLOROPROPANE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	78-87-5
BENZENE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	71-43-2
P-XYLENE		§290.103(3)(B)	0.10 ug/L	106-42-3
STYRENE	0.10 mg/L	§290.103(3)(B)	0.10 ug/L	100-42-5
TETRACHLOROETHYLENE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	127-18-4
TOLUENE	1.00 mg/L	§290.103(3)(B)	0.10 ug/L	108-88-3
TRANS-1,2-DICHLOROETHYLENE	0.10 mg/L	§290.103(3)(B)	0.10 ug/L	156-60-5
TRICHLOROETHYLENE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	79-01-6
VINYL CHLORIDE	0.00 mg/L	§290.103(3)(B)	0.10 ug/L	75-01-4
XYLENES (TOTAL)	10.00 mg/L	§290.103(3)(B)	0.10 ug/L	none
DICHLOROMETHANE	0.01 mg/L	§290.103(3)(B)	0.10 ug/L	75-09-2
ETHYLBENZENE	0.70 mg/L	§290.103(3)(B)	0.10 ug/L	100-41-4
MONOCHLOROBENZENE (CHLOROBENZENE )		§290.103(3)(B)	0.10 ug/L	108-90-7
M-XYLENE	10.00 mg/L		0.10 mg/L	108-38-3
ORTHO-1,2-DICHLOROBENZENE	0.60 mg/L	§290.103(3)(B)	0.10 ug/L	95-50-1
O-XYLENE		§290.103(3)(B)	0.10 mg/L	95-47-6
PARA-1,4-DICHLOROBENZENE	0.08 mg/L	§290.103(3)(B)	0.10 ug/L	106-46-7

Other

Contaminant Name	Drinking Water Standard	PWS Rule	TCEQ Threshold	CAS Number
CRYPTOSPORIDIUM PARVUM
AROCLOR (PCB)			0.05 ug/L	53469-21-9
TOTAL ALPHA EMITTING RADIUM	5.00 mg/L	§290.110
TOTAL COLIFORM
TOTAL TRIHALOMETHANE	0.10 mg/L	§290.116	0.10 ug/L
TRIAZINES
ESCHERICHIA COLI
FECAL VIRUSES
GIARDIA LAMBLIA
P-ALKALINITY

Susceptibility Report for System ID 1610007

System Details

Ground Water Sources

Surface Water Sources

PWS System Susceptibility Summary: Contaminants with HIGH Susceptibility

D.W. CONTAM. CANDIDATE LIST

INORGANICS

INORGANICS MONITORED

INORGANICS UNREGULATED

PHYSICAL

PHYSICAL PARAMETER

SOC MONITORED

SOC REGULATED

VOC - OTHER COMPOUNDS

VOC MONITORED

VOC REGULATED

PWS System Susceptibility Summary: Contaminants with MODERATE Susceptibility

D.W. CONTAM. CANDIDATE LIST

INORGANICS

INORGANICS MONITORED

INORGANICS UNREGULATED

RADIOCHEM

RADIOCHEM UNREGULATED

SOC MONITORED

SOC REGULATED

THM

VOC - OTHER COMPOUNDS

VOC MONITORED

VOC REGULATED

Other

Source Details: G1610007A

Contaminants with HIGH Susceptibility

Contaminants with MODERATE Susceptibility

Source Details: G1610007B

Contaminants with HIGH Susceptibility

Contaminants with MODERATE Susceptibility

Contaminant List

D.W. CONTAM. CANDIDATE LIST

INORGANICS

INORGANICS MONITORED

INORGANICS UNREGULATED

PHYSICAL

PHYSICAL PARAMETER

RADIOCHEM

RADIOCHEM UNREGULATED

SOC MONITORED

SOC REGULATED

THM

VOC - OTHER COMPOUNDS

VOC MONITORED

VOC REGULATED

Other

Map Legend

Water System Sources

Potential Sources of Contamination

Capture Zones

API

Truncated Watersheds