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The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

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Violations

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No violation(s) found. EPA has no record of violation(s) reported by the primacy agency for this water system.

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Enforcement Actions

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No enforcement action(s) found. EPA has no record of enforcement action(s) reported by the primacy agency for this water system.

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
NORTHWEST HARRIS COUNTY MUD 21	35196	Yes	Consecutive Connection	Ground water	Permanent	Active
1 - 4150 NORTHVALE	19516	Yes	Well	Ground water	Other	Inactive
TEMP GW FROM NORTH HARRIS COUNTY RWA	106693	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	41783	No	Distribution System/Zone	-	-	Active
4150 NORTHVALE DR; HOUSTON	136188	No	Sampling Station	-	-	Active
4150 NORTHVALE DR, HOUSTON	52774	No	Sampling Station	-	-	Active
4150 NORTHVALE	782	No	Treatment Plant	-	-	Active

• 1 - 7 of 7

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
4150 NORTHVALE	782	Gaseous Chlorination, Pre	Disinfection

• 1 - 1 of 1

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