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City of Westland
William R. Wild, Mayor
Department of Public Service
Water and Sewer Division
37137 Marquette    Westland, MI  48185    (734) 728-1770

2007 Report to Consumers on Water Quality

Westland is proud of the fine drinking water it receives from the City of Detroit and furnishes to the residents. This report will list the source of our water, the results of the tests performed on the water, and additional information about water and health questions.  State and federal requirements mandate that an annual report be sent to Westland customers before July 1 each year. This is our eleventh report.

Water Source   
Westland is supplied by the City of Detroit from its Springwells Water Treatment Plant in Dearborn.  The water comes from the Detroit River, situated within the Lake St. Clair, Clinton River, Detroit River, Rouge River, and Ecorse River, in the U.S. and parts of the Thames River, Little River, Turkey Creek and Sydenham watersheds in Canada. The Michigan Department of Environmental Quality, in partnership with the U.S. Geological Survey, the Detroit Water and Sewerage Department, and the Michigan Public Health Institute performed a source water assessment to determine the susceptibility of potential contamination. The susceptibility rating is on a six-tiered scale, from very low to high, based primarily on geologic sensitivity, water chemistry and contaminant sources. The susceptibility of our Detroit River source water intakes was determined to be highly susceptible to potential contamination. However, all four Detroit water treatment plants that use source water from the Detroit River have historically provided satisfactory treatment of this source water to meet drinking water standards.

Public Notice Sewage Disposal System Event

Any person or claimant who experiences an overflow or back up of a sewage disposal system or storm water system that is under the jurisdiction and control of the City of Westland should immediately contact the City of Westland Department of Public Service Director, Kevin Buford, at the following address and telephone number:
City of Westland
Department of Public Service
37137 Marquette
Westland, MI  48185
(734) 728-1770

Important Health Information

Overview

The City of Westland maintains over 325 miles of water main, over 2900 hydrants and over 6000 valves in our system.  We have flushed the water mains in one section of the city this year, covering the neighborhoods in the area of Merriman to Inkster and Annapolis to Van Born.  This is done to remove buildup from the water main and improve pressure and quality of the water you receive.  We will be doing other sections of the City of Westland in 2008 as the weather permits, working through the city on a continual basis.  We are also operating and repairing the valves for isolating the water throughout the city to insure proper operation of the valves in an emergency.

Lead

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. The City of Westland is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline at 800-426-4791 or at http://www.epa.gov/safewater/lead.

Cryptosporidium

Cryptosporidium is a disease-causing parasite that lives in the intestinal tract of many animals, including dogs and cats.  Symptoms of infection include diarrhea, abdominal cramps, headaches, nausea and vomiting.  The disease is typically spread through contact with feces of an infected animal or person or consuming contaminated food or water.  Cryptosporidium can be introduced into bodies of water by way of surface water runoff containing animal waste and sewage discharge.  The Detroit Water and Sewerage Department has been testing for cryptosporidium since 1994 and has not detected it in any of our source water supplies.

People with Special Health Concerns

Some people may be more vulnerable to contaminants in drinking water than the general population.  Immuno-compromised persons, such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV / AIDS or other immune system disorders, some elderly and infants, can be particularly at risk from infections.  These people should seek advice about drinking water from their health care providers. EPA / CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline at 800-426-4791.

National Primary Drinking Water Regulation Compliance

        In 2007, the City of Westland had no monitoring violations.  A monitoring violation is not an exceedence of a MCL or health standard.
        The Department of Public Service Water and Sewer Superintendent prepared this report for the City of Westland.  Data was supplied by the City of Detroit Water and Sewerage Department and the Michigan Department of Environmental Quality.  If there are any questions, concerns or comments, please feel free to contact the City of Westland Department of Public Service at 734-728-1770. This report is supplied to our customers to ensure compliance with the Michigan Safe Drinking Water Act (1976, PA 399, as amended) by 1998 PA 56.  This Act was passed to comply with the Federal Clean Water Act and the rules promulgated by the United States EPA dealing with this law.  Water quality data for community water systems throughout the United States is available at www.waterdata.com.

Additional Information

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants.  The presence of contaminants does not necessarily indicate that water poses a health risk.  More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency's Safe Drinking Water Hotline at 800-426-4791.
The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells.  As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals, and in some cases, radioactive material and can pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in source water include:

  • 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 be naturally-occurring 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, urban storm water runoff and residential uses.
  • Organic chemical contaminants, including synthetic and volatile organics, which are by-products of industrial processes and petroleum production, and can also, come from gas stations, urban storm water runoff and septic systems.
  • Radioactive contaminants, which can be naturally occurring or by the result of oil and gas production and mining activities.
In order to ensure that tap water is safe to drink the EPA prescribes regulations, which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for public health.

WRITTEN NOTICE REQUIREMENT:  Furthermore, compliance with Public Act 222 of 2001, an amendment to Michigan’s Governmental Immunity Statute 1964 PA 170, as amended MCL 691.1401 to 691.1419, requires that a claimant who wishes to seek compensation for property damage or physical injury resulting from a sewage disposal system event notify the City of Westland, Water and Sewer Superintendent, in writing, within 45 days after the date the damage or physical injury was discovered, or in the exercise of reasonable diligence should have been discovered.  The written notice shall contain the claimant’s name, address and telephone number, the address of the affected property, the date of discovery of any property damages or physical injuries, and a brief description of the claim.  Failure to comply with the notice requirements may prevent the recovery of damages and bar any claim that a claimant may have.

Key to Detected Contaminants Tables

Symbol

Abbreviation for

Definition/Explanation

MCLG

Maximum Contaminant Level Goal

The level of contaminant in drinking water below which there is no known or expected risk to health.

MCL

Maximum Contaminant Level

The highest level of a contaminant that is allowed in drinking water.  MCLs are set as close to the MCLGs as feasible using the best available treatment technology.

MRDLG

Maximum Residual Disinfectant Level Goal

The level of a drinking water disinfectant below which there is no known or expected risk to health.  MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.

MRDL

Maximum Residual Disinfectant Level

The highest level of a disinfectant allowed in drinking water.  There  is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

ppb

Parts per billion
(one in one billion)

The ppb is equivalent to micrograms per liter.  A microgram = 1/1000 milligram.

ppm

Parts per million
(one in one million)

The ppm is equivalent to milligrams per liter.  A milligram = 1/1000 gram.

NTU

Nephelometric Turbidity Units

Measures the cloudiness of water. 

TT

Treatment Technique

A required process intended to reduce the level of a contaminant in drinking water.

AL

Action Level

The concentration of a contaminant, which, if exceeded, triggers treatment or other requirements which a water system must follow.

HAA5

Haloacetic acids

HAA5 is the total of bromoacetic, chloroacetic, dibromoacetic, dichloroacetic, and trichloroacetic acids.  Compliance is based on the total.

TTHM

Total Trihalomethanes

Total Trihalomethanes is the sum of chloroform, bromodichloromethane, dibromochloromethane, and bromoform.  Compliance is based on the total.

n/a

Not applicable

 

Greater than

 

Springwells Water Treatment Plant

2007 Regulated Detected Contaminants Tables

 

Contaminant
Test Date

Units

Health Goal MCLG

Allowed Level MCL

Level Detected

Range of Detection Violation yes/no Major Sources in Drinking Water

Inorganic Chemicals – Annual Monitoring at Plant Finished Water Tap

Fluoride

8/8/2007

ppm

4

4

0.920

n/a

No

Erosion of natural deposits; Water additive, which promotes strong teeth; Discharge from fertilizer and aluminum factories.

Nitrate

8/8/2007

ppm

10

10

0.21

n/a

No

Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits

Disinfectant Residuals and Disinfection By-Products – Monitoring in Distribution System

Total Trihalomethanes (TTHM)

Feb-Nov 2007
ppb
n/a

80

20.4

7.5-43.4

No
By-product of drinking water chlorination

Haloacetic Acids (HAA5) 

Feb-Nov 2007

ppb
n/a

60

12.9

4.9-19.0

No

By-product of drinking water disinfection

Disinfectant Chlorine

Jan-Dec
2007
ppm
MRDGL 4
MRDL  
 4

0.67

0.61-0.72

No
Water additive used to control microbes

 

2007 Turbidity – Monitored every 4 hours at Plant Finished Water Tap
Highest Single Measurement Cannot exceed 1 NTU

Lowest Monthly % of Samples Meeting Turbidity Limit of 0.3 NTU (minimum 95%)

Violation
yes/no

Major Sources in Drinking Water

0.21 NTU

100 %

No

Soil Runoff

Turbidity is a measure of the cloudiness of water.  We monitor it because it is a good indicator of the effectiveness of our filtration system.

 

 

 

 

2007 Microbiological Contaminants – Monthly Monitoring in Distribution System

Contaminant

MCLG

MCL

Highest Number Detected

Violation
Yes/no

Major Sources in Drinking Water

Total Coliform Bacteria

0

Presence of Coliform bacteria
> 5% of monthly samples

in one month – 0

No

Naturally present in the environment.

E.coli or fecal
coliform bacteria

0

A routine sample and a repeat sample are total coliform positive, and one is also fecal or E.coli positive.

entire year - 0

No

 

Human waste and animal fecal waste.

 

 

 

 

 

2005 Lead and Copper Monitoring at Customers’ Tap

Contaminant

 

Test Date

Units

Health Goal MCLG

Action Level
AL

90th Percentile Value*

Number of Samples Over AL

Violation
yes/no

Major Sources in Drinking Water

Lead

2005

ppb

0

15

0 ppb

0

No

Corrosion of household plumbing system; Erosion of natural deposits.

Copper

2005

ppb

1300

1300

54 ppb

0

No

Corrosion of household plumbing system; Erosion of natural deposits; Leaching from wood preservatives.

*The 90th percentile value means 90 percent of the homes tested have lead and copper levels below the given 90th percentile value.  If the 90th percentile value is above the AL additional requirements must be met. 

 

 

 

 

 

 

Regulated Contaminant

Treatment Technique

Running annual average

Monthly Ratio Range

Violation
Yes/No

 Typical Source of Conataminant

Total Organic Carbon (ppm)

The Total Organic Carbon (TOC) removal ratio is calculated as the ratio between the actual TOC removal and the TOC removal requirements.  The TOC was measured each month and because the level was low, there is no requirement for TOC removal.

Erosion of natural deposits

 

 

 

 

2007 Special Monitoring


Contaminant

MCLG

MCL

Level Detected

Source of Contamination

Sodium (ppm)

n/a

n/a

4.65

Erosion of natural deposits

 

 

Unregulated contaminants are those for which EPA has not established drinking water standards.  Monitoring helps EPA to determine where certain contaminants occur and whether it needs to regulate those contaminants.

 

 



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