X hits on this document

4 views

0 shares

0 downloads

0 comments

2 / 2

Drinking Water Information

Primary Drinking Water Standards

In order to ensure that tap water is safe to drink, the USEPA and the CDPH prescribe regulations that limit the amount of certain contaminants in water provided by public water systems.

WATER SOURCE

Calleguas Municipal Water District

Imported Surface Water

Locally Stored Surface Water

Treated by Metropolitan

Treated by Calleguas

United Water Conservation District

Local Wells

The City’s water is treated to comply with CDPH regulations. The California Food and Drug Branch also establishes these same limits for contaminants in bottled water.

Special Health Requirements Nitrate in drinking water at levels above 45mg/L is a health risk for infants less than six months of age. Such nitrate levels can interfere with the capacity of an infant’s blood to carry oxygen, resulting in serious illness. Symptoms in- clude shortness of breath and blueness of skin. Nitrate lev- els above 45mg/L may also affect the ability of the blood to carry oxygen in other individuals, such as pregnant women and those with certain specific enzyme deficiencies. If you are caring for an infant or are pregnant, you should seek the advice of a healthcare provider.

PERCENT OF SUPPLY

69.5%

0.05%

MCL

PHG (MCLG)

Range

Avg.

Range

Avg.

Turbidity (NTU) TT (a)

Highest Single Value: TT=% of samples <0.3 NTU

0.05 100%

0.12 100%

Disinfection Byproducts and Disi

nfectant Residuals

Bromate (ppb) (b) Haloacetic Acids (ppb) (c)

Total Chlorine Residual (ppm) Total Trihalomethanes (ppb) (c)

10

(0)

60

N/A

[4]

[4]

80

N/A

6

ND-10

ND

ND

Highest Running Annual Average = 15, Range of Detections = ND - 19

Highest Running Annual Average = 2.2, Range of Detections = 1.9 - 2.3

Highest Running Annual Average = 31, Range of Detections = 14 - 50

Inorganic Chemicals

1

0.6

0.05-0.11

0.08

ND

ND

10

0.004

ND-2.4

ND

ND

ND

Aluminum (ppm) Arsenic (ppb)

30%

Range

Avg.

Year

Major Sources in Drinking Water

2007

Soil runoff.

ND-7 2007 4.35 2007 2007 11.5-26.8 18.16 2007

By-product of drinking water disinfection.

By-product of drinking water disinfection.

Drinking water disinfectant added for treatment.

By-product of drinking water chlorination.

2007 2007

Erosion of natural deposits; residual from water treatment process.

Erosion of natural deposits; runoff from orchards.

Lead in drinking water is rarely the sole cause of lead poi- soning, but it can add to a person’s total lead exposure. All potential sources of lead in the household should be identi- fied and removed, replaced or reduced. Infants and young children are typically more vulnerable to lead in drinking water. Possibly, lead levels at a home residence may be higher than other houses in the community, as a result of materials used in the home’s plumbing. If you are concerned about elevated levels in your water, you may want to have your water tested as well as simply flush your tap for 30 seconds to two minutes before using tap water. Additional information is available from the Safe Drinking Water Hotline at (800) 426-4791.

Fluoride - Source Water (ppm)

2

Fluoride - Distribution System (ppm) (d)

(d)

Nitrate (as N) (ppm)

10

Nitrate (as No3)

45

Selenium (ppb)

50

Radionuclides

Gross Alpha Particle Activity (pCi/L)

15

Radon (pCi/L)

NS

Uranium (pCi/L)

20

1 1 10

45 50

ND-4.2 (e)

ND (e)

ND

ND

0.1-0.2

0.1

0.2-0.3

0.3

(0)

NS N/A

Monthly Average = 0.7, Range of Detections = 0.2-0.9

ND - 0.8

ND

ND (e) ND (e)

0.6

ND

1.1-1.9 (e)

ND

ND

1.4 (e) ND-1.9 (e)ND (e)

0.6

0.6

2007 2007 2007

Erosion of natural deposits, runoff from orchards.

Water additive that promotes strong teeth

Runoff and leaching from fertilizer use, erosion of natural deposits.

11.7-23 ND-6

16.25 3

2007 2007

Leaching from fertilizers and septic tanks.

Erosion of natural deposits; discharge from mines, runoff from livestock lots.

.684-7.06 4.34 2007

Erosion of natural deposits.

380-433 399 2007

Decay of natural deposits.

6.16-6.63 6.32 2007

Erosion of natural deposits.

Radon is a radioactive gas, found throughout the United States, which occurs naturally in groundwater and is re- leased from water into the air during household use. The

USEPA is preparing a regulation that will specify a Maxi- mum Contaminant Level (MCL) for radon. MCLs are set at very stringent levels. For example, a person would have to drink two liters of water every day at the MCL level for a life- time to have a one-in-a-million chance of having possible health effects. For additional information, call the USEPA’s Radon hotline at 1-800-SOS-RADON.

Methyl Tertiary Butyl Ether (MTBE) is a gasoline additive which has not been detected in Oxnard water. However,

over the past few years, several underground fuel storage tanks have leaked and released gasoline containing MTBE near UWCD’s El Rio Wellfield and near the City’s Blending Stations Nos. 1 and 3, threatening these important sources of water for Oxnard. The City and UWCD are actively moni- toring the cleanup at these spill sites and coordinating with the County of Ventura Environmental Health Divison’s Leak- ing Underground Fuel Tanks Program, which oversees such cleanup efforts. This coordinated effort will help minimize the chance of contamination of the City’s groundwater.

Información Acerca del Agua Potable

De igual forma, niveles de nitrato por encima de los 45mg/L también pueden afectar la capacidad de transportar la sangre de ciertas personas como mujeres embarazadas y aquellos con ciertas defi- ciencias específicas de sus enzimas. Si usted está a cargo de un bebé o si está embarazada, usted debe consultar con su médico.

cupado por los altos niveles de plomo en el agua de su casa, usted también podría solicitar una prueba, así como también dejar que el agua de la llave cor- ra de 30 segundos a dos minutos antes de usarla. Si usted desea información adicional llame a la línea de asistencia de Agua Potable (800) 426-4791.

El plomo en el agua potable raramente es la única causa de intoxicación por plomo, pero sí puede au- mentar el nivel de exposición total de una persona al plomo. Todas las fuentes potenciales de plomo en el hogar deben ser identificadas y retiradas, remplazadas o reducidas. Por lo general, los bebés y los niños pequeños son más vulnerables al plomo en el agua potable. Posiblemente los niveles de plomo en una determinada residencia puedan ser más altos que en otras residencias en la misma co- munidad; como resultado de los materiales utiliza- dos en la plomería de la casa. Si usted está preo-

El radón es un gas radioactivo que se encuentra en todos los Estados Unidos y que se presenta en forma natural en el agua subterránea, el mismo que se libera del agua hacia el aire durante el uso doméstico. La agencia USEPA está preparando una normativa que indicará el Nivel Máximo de Contaminación (MCL por sus siglas en inglés) para el radón. Los máximos niveles de MCL se fijan a niveles muy rigurosos. Por ejemplo, una persona tendría que beber dos litros de agua diarios, de por vida, al nivel MCL, para tener una posibilidad en un millón de contraer un posible efecto sobre su salud. Para mayor información comuníquese con

Con el fin de asegurar que el agua de la llave sea apta para beber, USEPA y CDPH establecen nor- mas que limitan las cantidades de ciertos con- taminantes en el agua de los sistemas públicos de suministro de agua.

El agua de la Ciudad es tratada para cumplir con la normativa de CDPH. Asimismo, la División de Alimentos y Medicamentos de CDPH también es- tablece límites para ciertos contaminantes para el agua embotellada.

Requerimientos especiales de salud El nitrato en el agua potable, a niveles por encima de 45mg/L, representa un riesgo a la salud para aquellos bebés menores de seis meses de edad. Dichos niveles de nitrato puede interferir con la capacidad de la sangre del bebé de llevar oxígeno, resultando en una seria enfermedad. Los síntomas pueden incluir una falta de aliento y piel azulada.

la línea de asistencia de USEPA para el Radón al 1-800-SOS-RADON.

El éter metilo tert-butílico (MTBE) es un aditivo para la gasolina que no ha sido detectado en el agua de Oxnard. Sin embargo, durante los últimos años, varios de los tanques de almacenaje de combus- tible subterráneos han tenido fugas de gasolina que contiene MTBE cerca del Wellfield de El Río de UWCD y cerca de las Estaciones Mezcladoras de la Ciudad Números 1 y 3, amenazando estas fuentes importantes de agua para Oxnard. Tanto la Ciudad como UWCD están monitoreando activamente la limpieza de estos sitios con derrames en coordi- nación con el Programa para detectar Fugas Sub- terráneas de Tanques de Combustible del Departa- mento de Salud Ambiental del Condado de Ventura, que supervisa tales trabajos de limpieza. Este es- fuerzo coordinado ayudará a minimizar la contami- nación de aguas subterráneas de la Ciudad.

2

Calleguas

United Water

Municipal Water

Conservation

District

District

Secondary Drinking Water Standards

WATER SOURCE

Possible Contaminants Before Treatment

AESTHETIC STANDARDS

MCL

PHG

Range

Avg.

Range

Avg.

(MCLG)

Aluminum (ppb) (a)

200

NA

50-110

80

ND

ND

Chloride (ppm)

500

NA

40-70

61

67-71

70

Color (Units)

15

NA

1-2

2

ND-10

4

Manganese (ppm)

0.05

NS

ND

ND

ND

ND

Odor Threshold (Units)

3

NA

2

2

ND

ND

Specific Conductance (umho/cm)

1600

NA

414-520

477

564-586

576

Sulfate (ppm)

500

NA

46-57

52

74-81

78

Total Dissolved Solids (ppm)

1000

NA

248-285

267

310-350

334

NS

NS

76-92

82

90-110

96

2007

NS

1000

170-200

180

190-260

225

560-700

630

2007 Erosion of natural deposits.

PERCENT OF SUPPLY

Turbidity (NTU) (b)

5

Additional Parameters (Unregulated)

Alkalinity (ppm) Boron (ppb)

NA

0.04-0.05 0.04

Imported Surface Water

0.05-0.08 0.07

Treated by Metropolitan

69.5%

Locally Stored Surface Water

Local Wells

Treated by Calleguas

0.5%

Major Sources in Drinking Water

2007

Substances that form ions within water; seawater influence.

Leaching from natural mineral deposits.

Leaching from natural mineral deposits. Soil run-off.

470-530

494

2007

1000-1090

1045

2007

30% Range

Avg. Year

2007 2007 2007 2007 2007

Erosion of natural deposits. Residual from water treatment process.

Runoff,/leaching from natural deposits; seawater influence. Naturally occurring organic materials.

Leaching from natural deposits. Naturally occurring organic materials.

0.03-0.11 0.07 2007

The City has sampled its drinking water for the presence of unregulated contaminants. Following is the City’s findings on items present in Oxnard water.

Microbial contaminants such as viruses and bacteria which may come from sewage treatment plants, septic systems, agricultural livestock operations and wildlife.

Inorganic contaminants, such as salts and metals, which can occur naturally or result from urban storm water runoff industrial or domestic wastewater discharges, oil and gas production, mining or farming.

Pesticides and herbicides which may come from a variety of sources such as agriculture and residential uses.

Calcium (ppm)

NS

Hardness (Total Hardness) (ppm) Magnesium (ppm) N-Nitrosodimethylamine (ppt) pH (pH Units) Potassium (ppm) Sodium (ppm) Total Organic Carbon (TOC) (ppm) Vanadium (ppb)

NS NS NS NS NS NS NS NS

NS

23-26

NS

108-117

NS

11-13

10

ND-3.0

NS

8.2-8.4

NS

3

NS

40-58

NS

1.5-2.6

50

ND-3.7

Raw Surface Water Cryptosporidium

NA = not applicable NTU = Nephelometric Turbidity Units ppb = parts per billion, or micro- grams per liter (µg/L) ND = None Detected NS = No Standard ppm = parts per million, or mil- ligrams per liter (mg/L) ppt = parts per trillion, or nano- grams per liter (ng/L) pCi/L = PicoCuries per Liter

Maximum Contaminant Level (MCL) = The highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Maximum Contaminant Level Goal (MCLG) = The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the U.S. Envi- ronmental Protection Agency.

Maximum Residual Disin- fectant Level (MRDL) = The level of a disinfectant added for water treatment that may not be exceeded at the con- sumer’s tap. Maximum Residual Disinfec- tant Level Goal (MRDLG) = The level of a disinfectant added for water treatment below which there is no known or ex- pected health risk. MRDLs are set by the U.S. Environmental Protection Agency. Primary Drinking Water Stan- dard = MCLs and MRDLs for contaminants that affect health along with their monitoring and reporting requirements, and wa- ter treatment requirements. Public Health Goal (PHG) = The level of a contaminant in drink- ing water below which there is no known or expected risk to health. PHGs are set by the California Environmental Protection Agency.

24 112

12 ND 8.3

3 50 2.2

3.1

32-36 142-156

34 149

561-598

580

2007 2007 Leaching from natural mineral deposits.

15-16 ND 7.4-8.2

16 ND 7.9

2007 Leaching from natural deposits. 2007 Leaching from natural deposits. 2007

3 66-67 2.1-2.3

3 67 2.2

105-105 700-800

105 750

2007 2007 Leaching from natural mineral deposits; seawater intrusion. 2007 Natural or man-made chemical compounds.

ND

ND

2007

R

u n o f f a n

dL

e a c h i n g f r o m n a t u r a m n e r a l d e p o s i t s .

12 samples were obtained. Zero Oocysts in 11 samples and only 2 Oocysts in one sample.

Microbial pathogen found in surface water throughout the U.S. Samples were obtained before filtration and disinfection.

Treatment Technique (TT) = A required process intended to re- duce the level of a contaminant in drinking water.

(a) The turbidity level of filtered water shall be less than or equal to 0.3 NTU in 95% of the mea- surements taken each month and shall not exceed 1.0 NTU. ASR water is not subject to

water supplies started on No- vember 26, 2007. Distribution samples were collected after that date. The CDPH Optimal Control Range for fluoride treat- ment is 0.7 to 1.3 ppm. (e) Metropolitan results were taken from four consecutive

quarters of monitoring from August 2005 to April 2006. Cal- leguas Lake Bard results were taken from four consecutive quarters of monitoring in 2007. Calleguas ASR results were taken from quarterly monitoring in 2005, 2006 and 2007.

Radioactive contaminants that occur naturally or result from oil and gas production and mining activities.

Organic chemical contaminants including synthetic and volatile organic chemicals, by-products of industrial processes and petroleum production, derived from gas stations, urban storm water runoff and septic systems.

The City routinely monitors contaminants in its drinking water according to state and federal laws. The tables (pages 2 & 3) show the results for the period of January 1 to December 31, 2007. All drinking water, including bottled drinking water, may reasonably expect to contain at least small amounts of some contaminants. Remember that the presence of these contaminants does not necessarily pose a health risk. As you can see in the table, Oxnard’s water system did not have any violations. The City is proud that your drinking water meets or exceeds all federal and state requirements. As such, the USEPA and CDPH have determined that Oxnard water is safe at these levels.

these requirements.

(b)

Compliance

for

treat-

Sampling Results:

ment plants that use ozone is based on a running annual average of monthly samples. ASR water is not subject to these requirements. (c) Compliance is based on a running annual average of quarterly distribution system samples. Values reported reflect the highest and lowest single value in the distribution system (range) and the highest running annual average. (d) Fluoridation treatment of

Showing the Detection of Lead and Copper in September 2006 (Next Schedule testing will be in the summer of 2009)

Resultados del muestreo:

Resultados del muestreo: demuestra la detección de Plomo y Cobre en septiembre de 2006 (El próximo muestreo está programado para el verano de 2009)

AL

MCLG

  • #

    of sites

exceeding AL

Copper

ppb

AL = 1300

1700

3

Lead

ppb

AL = 15

2

2

  • #

    sample

collected

69 69

90th

percentile

870 8.2

Caused by

Internal corrosion of household plumbing systems, discharges from industrial manufacturers, erosion of natural deposits

Ocasionado por:

Corrosión interna de la plomería de la casa, los sistemas, descar- gas de fabricantes industriales, erosión de depósitos naturales.

AL = Action Level - Regulatory Action Level - The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

ppb = parts per billion, or micrograms per liter (ug/L)

MCLG - Maximum Contaminant Level Goal = The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the USEPA.

Posibles Contaminantes antes del Tratamiento

El Municipio ha analizado las muestras de su agua potable para detectar la presencia de contami- nantes no reglamentados. A continuación se da la lista de lo que encontró la Ciudad en el agua de Oxnard.

Microbios contaminantes tales como virus y bacteria, los cuales pueden provenir de plantas de tratamiento de aguas residuales, sistemas sépticos, operaciones con ganado agrícola y fauna silvestre.

Contaminantes inorgánicos, tales como sales y metales, las cuales pueden ocurrir naturalmente

  • o

    ser el resultado del escurrimiento de aguas

residuales urbanas, descargas de aguas residuales industriales o domésticas, producción de gas y petróleo, minería o agricultura.

Pesticidas y herbicidas que pueden provenir de una variedad de fuentes como usos agrícolas y residenciales.

Contaminantes radioactivos que ocurren naturalmente o son resultado de la producción de gas y petróleo y actividades de minería.

Contaminantes químicos orgánicos incluyendo químicos sintéticos y orgánicos volátiles, productos secundarios de procesos industriales

y producción de petróleo, que pueden provenir de gasolineras, escurrimiento de aguas residuales urbanas y sistemas sépticos.

La Ciudad rutinariamente monitoréa contaminantes en su agua potable de acuerdo con las leyes estatales y federales. Las tablas (paginas 2 & 3) muestran los resulta- dos del periodo de tiempo correspondiente al 1º de enero al 31 de diciembre de 2007. Es razonable esperar que toda el agua potable, incluyendo el agua potable embotellada, contenga por lo menos pequeñas cantidades de contaminantes. Es importante recordar que la presencia de estos

contaminantes no necesariamente presenta un riesgo a la salud. Como puede ver en la tabla, el sistema de agua de Oxnard no cometió ninguna infracción. La Ciudad está orgullosa de que el agua que usted bebe cumple o excede todos los requerimientos federales y estatales. Por ser así, USEPA y CDPH han determinado que a estos niveles el agua es segura.

3

Document info
Document views4
Page views4
Page last viewedSun Dec 04 06:42:05 UTC 2016
Pages2
Paragraphs429
Words4365

Comments