Required Limits

National Primary Drinking Water - List of Constaminants and MCL

• • Source: http://www.epa.gov/safewater/contaminants/

 

Soluble Threshold Limit Concentration (STLC) and Total Threshold Limit Concentration (TTLC) Regulatory Limits

• • Source: California Code of Regulations, Title 22, Chapter 11, Article 3.

 

Maximum Concentration of Contaminants for the Toxicity Characteristic

• • Source: 40 CFR §261.24