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Water and Wastewater

Cheltenham - Terra Cotta: 2005 Water Quality Report

Our Vision: "To be Recognized as the
Industry Leader in Public Works"

Intro | Characteristics | Regulatory Compliance | FAQs

Frequently Asked Questions (FAQs)

  1. Is our water safe to drink?
  2. What are my water characteristics?
  3. Is the water in Cheltenham - Terra Cotta hard?
  4. Should I buy a water softener?
  5. Why does the water sometimes look "cloudy" or "milky"?
  6. Is fluoride added to my water?
  7. Why is my kettle stained inside?
  8. Why does the water sometimes look "rusty" yellow or tea-like?
  9. Where can I get more information about drinking water and related issues?
  10. What can I do at home about my water quality?

1. Is our water safe to drink?

To protect public health, the Ministry of the Environment has established the Ontario Drinking Water Standards (ODWS). These objectives help ensure that water used by the public is free from disease-causing organisms, hazardous amounts of toxic chemicals and radioactive materials.

The Region of Peel is proud to report that it has met these standards in 2005.

Our water is safe to drink.

2. What are my water characteristics?

Cheltenham - Terra Cotta Water Parameters 2005
  MAC/IMAC Type of Objective Results Unit
Turbidity 1 NTU OG 0.08 - 0.38 NTU
Comments: Measure of water clarity. Caused by the presence of suspended tiny particles that scatter light and make the water appear cloudy.
(as CaCO3)
30 - 500 OC 299 - 302 mg/L (CaCO3)
Comments: Measure of resistance of the water to the effects of acids added to water (change in pH)
Conductivity - - 742 uS/cm
Comments: Related to inorganics dissolved in water
(as CaCO3)
6 - 9 OG 24.8 - 26.2 grains/ gallon
80 - 100 360 - 381 mg/L (CaCO3)
Comments: Naturally occurring
pH 6.5 - 8.5 OG 7.4 - 7.5 -
Comments: Indicates the acidity of water
Total Dissolved Solids 500 AO 439 - 443 mg/L
Comments: Natural inorganics dissolved in water
Sodium 200 AO 19.9 - 22 mg/L
Comments: Naturally occurring or water softening. Softening using a domestic water softener increases the sodium level in drinking water. The Medical Officer of Health is notified when Sodium concentration exceeds 20 mg/L.
Chloride 250 AO 74 - 74.2 mg/L
Comments: Naturally occurring, may produce salty taste at higher levels
Iron 0.30 AO <0.014 - 0.054 mg/L
Comments: Naturally occurring
Manganese 0.05 AO 0.001 - 0.54 mg/L
Comments: Naturally occurring
Sulphate 500 AO 36.4 - 36.6 mg/L
Comments: Naturally occurring
Sulphide 0.05 as H2S AO 0.004 - 0.007 mg/L
Comments: Naturally occurring
Nitrate 10 HR 0.038 mg/L
Comments: Natural decay of organics or fertilizers
Nitrite 1 HR <0.017 mg/L
Comments: Natural decay of organics or fertilizers
Fluoride 1.5 HR <0.087 mg/L
Comments: Naturally occurring or added to prevent tooth decay
Lead 0.01 HR ND mg/L
Comments: Lead plumbing
Mercury 0.001 HR ND mg/L
Comments: Industrial pollutant, from coal combustion, metal refining operations and from natural mineral deposits in some hard rock areas.

MAC = Maximum Acceptable Concentration
MAC objectives are established when substances are present above levels that are known or suspected to have an adverse effect on health.

IMAC = Interim Maximum Acceptable Concentration
IMAC objectives are established when there is not enough information to set a MAC with certainty.

AO = Aesthetic Objectives
AOs are established for substances that affect the taste, smell and colour of water or interfere with water quality control practices. These substances do not affect health.

HR = Health Related Perameter
Health related perameters are a concern for acute and/or chronic exposure.

OG = Operational Guidelines
OGs are established for substances that need to be controlled to ensure the efficient treatment and distribution of water.

NTU = Nephelometric Turbidity Unit
TCU = True Colour Units
BDL = Below Detection Limit
uS/cm = microsiemens per centimetre
mg/L = milligram per litre

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Revised: Thursday July 26 2007


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