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NEWWA Corrosion Control Survey

Goal: To help water systems in New England find analogous systems that may be used as a case study in their evaluation of optimum corrosion control for compliance with the LCRR.
   
Note: Survey results shall be used for informational purposes only and should not be regarded as professional engineering advice or used for regulatory compliance. Changes in water quality and treatment should always be reviewed and approved by the applicable State regulatory agency and licensed water quality/treatment professional.
 
Questions? Contact Mary Quigley at mquigley@newwa.org
General System Information
1.What is the name of your system and in which state is it located?
2.Are you willing to share your responses with other utilities and the public?
3.What is the approximate population served in your system?
4.What % of your source water comes from surface water?
5.Are there seasonal variations?
Corrosion Control Information
6.What is your existing corrosion control treatment strategy?
7.Is your corrosion control treatment strategy based on a corrosion control study? Please provide a brief explanation.
8.How long has your existing corrosion control strategy been in place?
9.If your corrosion control treatment strategy is phosphate addition, what kind is utilized?
10.If your corrosion control treatment strategy is phosphate addition, what is the dose in mg/L as P or PO₄?
11.If your corrosion control treatment strategy is pH adjustment, what is the target pH?
12.If your corrosion control treatment strategy is silicate addition, what is the dose in mg/L?
13.What are your two most recent 90th percentile lead levels?
14.What is your target pH at point of entry into the distribution system?
15.What is your target (or normal) alkalinity in mg/L as CaCO₃?
16.If you use a coagulant, what is the chemical?
Water Quality Information
17.What do you use for secondary disinfection?
18.What is your target disinfectant residual at the entry point to the distribution system?
19.Have there been any recent changes to the treatment process?
Service Line Information
20.Do you have lead service lines in your community?
21.Do you have lead goosenecks in your community?
22.Do you have galvanized pipes in your community?
23.Are your answers from questions 18-20 based on a complete inventory or an estimate?
24.Do you have an on-going replacement program for the lead service lines and goosenecks? If yes, what is the schedule?
25.Are you willing to be contacted for further discussion on how your water system is preparing for the Revised Lead and Copper Rule? If yes, please provide your contact information. Your contact information will not be shared outside of NEWWA and the respondents to this survey.
26.Provide any additional details you would like to share