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Testing is done based on a mapping system approved by the Texas Commission on Environmental Quality (TCEQ). The testing sites are set up to encompass the entire distribution system. This site map and subsequent testing provides coverage for all areas of the distribution system.
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The City of Mesquite is required by Federal law to provide a Water Quality Report (Consumer Confidence Report) annually. Water customers may obtain a copy of this report on the City of Mesquite website at www.cityofmesquite.com/waterqualityreport.
The City of Mesquite is required by law to furnish 120 bacteriological samples per month for testing. These samples are taken weekly and delivered to the State-certified lab in Wylie. If a bad sample is found, immediate retesting is required. If repeat testing fails the public would immediately be notified. The City is also required to take other water samples that include: lead & copper, chlorine residual, trihalomethanes & haloacetic acids, nitrification and Unregulated Contaminants (chloroform, bromoform, bromodichloromethane, dibromochloromethane). Total samples taken by Utilities for 2019 was 4,252.
Federal and state law requires notification to all franchise utilities before excavating or digging to repair a leak. This notification is required so that excavation and digging operations to repair a leak does not inadvertently cut or damage other utility lines (electric power, phone cables, cable TV or gas mains). A 48 hour notice is required for line locations. In an emergency when safety or property damage is an immediate concern, line location may be secured in two hours. Most repairs are not classified as emergencies. Often the locations may be made and there still seems to be no activity. Leaks are prioritized with large impact leaks and emergencies taking precedent over small nuisance leaks.
Mesquite’s water system contains:
The City of Mesquite attempts to notify customers of water service interruptions whenever possible. When water is cut off in an emergency situation residents are not always notified. On occasion, there is not adequate time to notify due to a water main break which is causing property damage or is a safety concern.
There are times when a water main rupture is substantial enough to depressurize the water lines in the immediate vicinity of the damage. Under this condition water is exiting the pipe in such volume that water pressure and flow cannot be maintained. The drop in pressure gives the appearance of the water being turned off even though this has not occurred.
If water service will be interrupted for only a short period of time, notification is sometimes not given. Notification in these cases takes manpower which is not available and service will be restored very soon.