The Power of Information

National Drinking Water Database


Calif Correctnl Inst Tehachapi - Bakersfield, CA


Serves 5,600 people - Test data available: 2004-2009

This drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group (EWG) by the California Department of Public Health. It is part of EWG's national database that includes 47,667 drinking water utilities and 20 million test results. Water utilities nationwide detected more than 300 pollutants between 2004 and 2009. More than half of these chemicals are unregulated, legal in any amount. Despite this widespread contamination, the federal government invests few resources to protecting rivers, reservoirs, and groundwater from pollution in the first place. The information below summarizes test results for this utility and lists potential health concerns.

 
This Drinking Water System
National Average
Exceed Health GuidelinesTests showing chemicals at concentrations above health guidelines established by federal and state health agencies. These guidelines are typically set at a levels that pose no significant health risk.
5 chemicals
4
Health Standard ExceedencesChemicals detected at concentrations above the legal limit, the Maximum Contaminant Level (MCLs) established by the U.S. EPA. Most MCLs are based on annual averages, so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.
0 chemicals
0.5
Pollutants FoundThe total number of contaminants detected since 2004, according to data provided by the state water agency.
24 chemicals
8
Tests ConductedThe total number of number of water quality tests conducted by water utilities and recorded in data provided by the state water agency.
910 tests
420

Contaminants Exceeding Health Guidelines

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Alpha particle activityAlpha particles are a form of radiation released from mining waste pollutants and natural sources.1.35 pCi/L
2.21 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
No
15 pCi/L
BromoformBromoform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.0.18 ppb
1.05 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
80 ppb
Dichloromethane (methylene chloride)Dichloromethane is a widely-used paint remover, solvent and metal degreasing agent; it is discharged into the environment from the manufacture of chemicals, textiles, electronics, metals and plastics, pharmaceuticals and pesticides.0.06 ppb
0.36 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
5 ppb
Arsenic (total)Arsenic contaminates drinking water due to mining runoff, erosion of natural deposits, emissions from glass and electronics processing and the use of arsenical compounds as wood preservatives and pesticides.0.83 ppb
2.5 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
10 ppb
PentachlorophenolPentachlorophenol is a carcinogenic pollutant discharged from wood preserving factories.<0.01 ppb
<0.01 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
1 ppb
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Other Detected Contaminants

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
NitrateNitrate enters drinking water sources from fertilizer runoff, leaching septic tanks, and erosion of natural deposits; it is also emitted by chemical, petrochemical and metal-finishing industries.3.42 ppm
4.97 ppm
No
10 ppm
No
10 ppm
Barium (total)Barium is a mineral that enters drinking water through drilling and mining waste runoff, discharges from chemical industries and erosion of natural deposits.33.39 ppb
52 ppb
No
700 ppb
No
2000 ppb
VanadiumVanadium is a metal used as an alloying addition to iron & steel; it is discharged from ceramic, glass, textile, photography, metallurgy and rubber industries.14.67 ppb
18 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
Chromium (total)Chromium is a metal that pollutes drinking water due to discharge from steel and pulp mills and erosion of natural deposits.2.83 ppb
5.5 ppb
No
100 ppb
No
100 ppb
Total trihalomethanes (TTHMs)Total trihalomethanes constitute the sum of four disinfection byproducts: chloroform, bromodichloromethane, dibromochloromethane, and bromoform.0.22 ppb
1.05 ppb
No
9.8 ppb
No
80 ppb
CopperCopper is a naturally occuring metal and drinking water contaminant that enters tap water by corrosion of household plumbing systems and erosion of natural deposits.2.87 ppb
5 ppb
No
300 ppb
No
1000 ppb
DibromochloromethaneDibromochloromethane is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.0.04 ppb
0.25 ppb
No
0.4 ppb
No
80 ppb
n-Butylbenzenen-Butylbenzene is an intermediate for chemical manufacturing and a raw material for liquid crystals.0.08 ppb
0.49 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
Mercury (total inorganic)Mercury is a metal from refinery and factory pollution, coal burning, landfill and agricultural runoff and erosion of natural deposits.0.03 ppb
0.1 ppb
No
1.2 ppb
No
2 ppb
2,4-D2,4-D is a chlorophenol herbicide used on row crops, lawns and golf courses.<0.01 ppb
<0.01 ppb
No
20 ppb
No
70 ppb
DinosebDinoseb is an herbicide historically used on soybeans and vegetables; it is associated with birth defects and reproductive difficulties and has been banned in the U.S. since 1986.<0.01 ppb
<0.01 ppb
No
7 ppb
No
7 ppb
PicloramPicloram is an herbicide that may contaminate drinking water sources due to runoff from applications to pasture, rangeland and rights-of-way.<0.01 ppb
0.01 ppb
No
500 ppb
No
500 ppb
Bentazon (Basagran)Bentazon is an herbicide used to control broadleaf weeds for alfalfa, asparagus, cereals, beans and many other crops.<0.01 ppb
0.02 ppb
No
200 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
DalaponDalapon is an herbicide used on roads, railway tracks and other rights of way.0.01 ppb
0.04 ppb
No
200 ppb
No
200 ppb
DicambaDicamba is an herbicide applied in agriculture, rangeland, pasture and industry; it is used for corn, wheat and other crops.<0.01 ppb
0.02 ppb
No
3000 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
DiquatDiquat is a non-selective herbicide and dessicant used extensively for control of crop and aquatic weeds; it may cause cataracts.0.04 ppb
0.08 ppb
No
15 ppb
No
20 ppb
MolybdenumMolybdenum is a byproduct of copper and tungsten mining, and is used as an alloy for various metals; it also occurs naturally in soil and rock.23 ppb
23 ppb
No
40 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
Nitrate & nitriteNitrate and nitrite enter water from fertilizer runoff, leaching from septic tanks, and erosion of natural deposits.3.4 ppm
3.4 ppm
No
10 ppm
No
10 ppm
Gross beta particle activity (pCi/L)Beta particles are a form of radiation frequently associated with nuclear testing and radioactive mineral deposits.1.35 pCi/L
1.35 pCi/L
NoNo
15 pCi/L
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Contaminants Not Detected - 132 chemicals

1,1,1,2-Tetrachloroethane, 1,1,1-Trichloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethane, 1,1-Dichloroethylene, 1,1-Dichloropropene, 1,2 Dibromo-3-chloropropane (DBCP), 1,2,3-Trichlorobenzene, 1,2,3-Trichloropropane, 1,2,4-Trichlorobenzene, 1,2,4-Trimethylbenzene, 1,2-Dichloroethane, 1,2-Dichloropropane, 1,3,5-Trimethylbenzene, 1,3-Dichloropropane, 1,3-Dichloropropene, 1,4-Dioxane, 2,2-Dichloropropane, 2,4,5-TP (Silvex), 2-Chloroethylvinyl ether, 3-Hydroxycarbofuran, Alachlor (Lasso), Aldicarb, Aldicarb sulfone, Aldicarb sulfoxide, Aldrin, Aluminum, Antimony (total), Asbestos, Atrazine, Baygon (Propoxur), Benzene, Benzo[a]pyrene, Beryllium (total), bis(2-chloroethyl) ether, Bromacil, Bromobenzene, Bromochloromethane, Bromodichloromethane, Bromomethane, Butachlor, Cadmium (total), Carbaryl, Carbofuran, Carbon tetrachloride, Chlordane, Chloroethane, Chloroform, Chloromethane, Chlorothalonil (Bravo), cis-1,2-Dichloroethylene, cis-1,3-Dichloropropene, Cyanide, Dacthal, Di(2-Ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Diazinon (Spectracide), Dibromoacetic acid, Dibromomethane, Dichloroacetic acid, Dichlorodifluoromethane, Dieldrin, Dimethoate, Endrin, EPTC (Eptam), Ethyl-t-butyl ether (ETBE), Ethylbenzene, Ethylene dibromide (EDB), Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene (HCB), Hexachlorobutadiene, Hexachlorocyclopentadiene, Isopropyl ether, Isopropylbenzene, Lead (total), Lindane, m- & p- Xylene, m-Dichlorobenzene, m-Xylene, Manganese, Methiocarb, Methomyl, Methoxychlor, Methyl ethyl ketone, Methyl isobutyl ketone, Metolachlor, Metribuzin, Molinate (Ordram), Monobromoacetic acid, Monochloroacetic acid, Monochlorobenzene (Chlorobenzene), Mtbe, n-Propylbenzene, Naphthalene, Nitrite, o-Chlorotoluene, o-Dichlorobenzene, o-Xylene, Oxamyl (Vydate), p-Chlorotoluene, p-Dichlorobenzene, p-Isopropyltoluene, p-Xylene, Prometryn, Propachlor, sec-Butylbenzene, Selenium (total), Silver (total), Simazine, Styrene, Terbacil, Tert-Amyl-Methyl Ether, Tert-Butyl Alcohol, tert-Butylbenzene, Tetrachloroethylene, Thallium (total), Thiobencarb (Bolero), Toluene, Total haloacetic acids (HAAs), Total polychlorinated biphenyls (PCBs), Toxaphene, trans-1,2-Dichloroethylene, trans-1,3-Dichloropropene, Trichloroacetic acid, Trichloroethylene, Trichlorofluoromethane, Trichlorotrifluoroethane, Vinyl chloride, Xylenes (total)

Pollution Summary

24Total Contaminants Detected (2004 - 2009)

Barium (total), Chromium (total), Copper, Mercury (total inorganic), Nitrate & nitrite, Nitrate, Molybdenum, Vanadium, Dalapon, Diquat, Picloram, Dinoseb, 2,4-D, n-Butylbenzene, Dicamba, Bentazon (Basagran), Dibromochloromethane, Total trihalomethanes (TTHMs), Gross beta particle activity (pCi/L), Arsenic (total), Pentachlorophenol, Bromoform, Dichloromethane (methylene chloride), Alpha particle activity

10Agricultural Pollutants
(pesticides, fertilizer, factory farms)

Nitrate & nitrite, Nitrate, Dalapon, Diquat, Picloram, Dinoseb, 2,4-D, Dicamba, Bentazon (Basagran), Arsenic (total)

9Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Nitrate, Copper, Nitrate & nitrite, Arsenic (total), Dalapon, Mercury (total inorganic), Dichloromethane (methylene chloride), Molybdenum, 2,4-D

13Industrial Pollutants

Barium (total), Chromium (total), Mercury (total inorganic), Nitrate & nitrite, Nitrate, Molybdenum, Vanadium, n-Butylbenzene, Gross beta particle activity (pCi/L), Arsenic (total), Pentachlorophenol, Dichloromethane (methylene chloride), Alpha particle activity

3Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

Total trihalomethanes (TTHMs), Dibromochloromethane, Bromoform

9Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Nitrate, Copper, Nitrate & nitrite, Barium (total), Arsenic (total), Alpha particle activity, Gross beta particle activity (pCi/L), Chromium (total), Mercury (total inorganic)

5Unregulated Contaminants
EPA has not established a maximum legal limit in tapwater for these contaminants

Molybdenum, Vanadium, n-Butylbenzene, Dicamba, Bentazon (Basagran)

EPA Violation Summary

Violation CategoryNumber of Violations
MCL and Treatment
(click see violations)
1

Information on violations is drawn directly from EPA's national violations database in the Agency's Safe Drinking Water Information System. Analyses by others have raised questions about the quality of the information in EPA's database. For the purposes of this investigation, EWG is not showing below or including in our analyses, those violations for individual water suppliers that occurred on days for which the total number of violations assigned by EPA to that water supplier was greater than 20. This criteria was based on common characteristics of incorrect violations data as identified by water utilities, from a review of EPA's violations data by several hundred utilities prior to the release of EWG's investigation.