Water Quality Lab

Johnson County Wastewater’s Water Quality Laboratory serves the residents of Johnson County, providing analytical services encompassing drinking water, stream water, municipal treatment plants, and industries.

Water Quality Lab water collection activities

The Essential Work of the Water Quality Lab

Drinking Water

Regular laboratory testing of drinking water is essential for monitoring the quality of drinking water to ensure it meets safety standards set by regulatory agencies such as the Environmental Protection Agency in the United States.

Water Quality Assessment

  • Laboratory analysis is vital for assessing the health of lakes, streams, and rivers by monitoring water quality parameters such as dissolved oxygen levels, pH, turbidity, and nutrients (e.g., nitrogen, phosphorus).
  • It helps identify sources of pollution and track changes in water quality over time, supporting efforts to protect aquatic ecosystems and biodiversity.
  • Laboratory analysis ensures compliance with water quality standards under laws such as the Clean Water Act, aimed at maintaining the integrity of freshwater resources.

Wastewater Treatment

  • Laboratory analysis is used to monitor the quality of treated wastewater before it is discharged into rivers, streams or other water bodies. This ensures that the effluent meets specific regulatory standards regarding pollutant concentrations, such as for nutrients, heavy metals, pathogens and other contaminants.
  • Laboratory analysis helps in optimizing wastewater treatment processes by identifying the efficiency of treatment methods and pinpointing areas where improvements may be needed. This can include adjusting chemical dosages, modifying treatment techniques or enhancing operational practices to achieve better effluent quality.
  • Data from laboratory analyses form the basis for informed decision-making by operators, engineers and regulatory authorities. It allows for proactive management of wastewater treatment systems, ensuring continuous improvement and adaptation to changing environmental conditions or regulatory requirements.
  • Ultimately, laboratory analysis ensures that the treated wastewater does not pose a threat to public health or the environment. By confirming that effluent quality meets regulatory standards, laboratory analysis plays a vital role in protecting aquatic ecosystems, supporting biodiversity and maintaining the integrity of water resources.

Water Test Price List

Drinking Water

  First Sample Price Each Additional Sample
Fluoride

$34.50

$18.50

Lead $69 $40
Nitrate $36 $18
Nitrite $36 $18
Total Coliform $35.50 $30

 

Non-Potable & Wastewater

  First Sample Price Each Additional Sample
Alkalinity $19 $19
Ammonia $18.50 $18.50
Ammonia, low range $36 $18
BOD or cBOD, 5 day $21 $21
BOD or cBOD, 5 day, soluble $22.50 $22.50
Chloride $26 $18
Chlorine $19 $19
COD $23 $16.50
COD, filtered/flocculated $28 $21.50
Conductivity $21.50

$16.50

Cyanide $45.50 $20
Dissolved Oxygen $18 $18
E. coli $35.50 $30
Hardness (Ca + Mg) $66 $41.50
Kjeldahl Nitrogen $54 $18
Kjeldahl Nitrogen + Phosphorous $62 $18.50
Mercury, CVAA $99 $34.50
Metals, ICP/MS single analyte $69.50 $40
Metals, ICP/MS ea. additional analyte   $6.50
Nitrate $36 $18
Nitrate + Nitrite $36 $18
Nitrite $36 $18
Oil & Grease $98.50 $28
pH $16.50 $16.50
Phenolics, total $45.50 $20
Phosphate, ortho $36 $18
Phosphorous, total $54 $18
Specific Conductance $21.50 $16.50
Sulfate $35.50 $19
Total & Volatile Solids $20.50 $20.50
Total & Volatile Suspended Solids $18 $18
Total Dissolved Solids $24 $18
Turbidity $35

$17

Volatile Fatty Acids $51 $30
Volatile Organics $65.50 $42

 

Sludge & Biosolids

  First Sample Price Each Additional Sample
Fecal Coliform $67 $67
Metals, EPA 503 list $134.50 $105
Total & Volatile Solids $20.50 $20.50
Total Solids $17.50 $17.50