Systems that were required to monitor for perchlorate as part of UCMR1 will know if they detected perchlorate and may have taken action to reduce their levels. Some public water systems have on-going monitoring programs for perchlorate in drinking water. If water systems have not monitored for perchlorate, they can review their source water assessment to determine if there are any potential sources of perchlorate contamination within their source water protection area. If an activity is taking place that could result in perchlorate contamination, they may want to test their water for the presence of perchlorate.
How will a public water system know if it has perchlorate in its water?
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