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MyTapWater.us

PWSID TX1500002

LLANO COUNTY MUD 1

Community water system based in Horseshoe Bay, TX

Service area on file with EPA: Llano County. EPA's recorded service area can be incomplete for regional authorities. The cities and counties above are what the utility has filed with EPA; the utility may serve additional areas.

Population served
747
Source
Surface water
Status
Active

At a glance

1 finding worth watching

Past 5 years: 26 health-based violations on file, all marked Resolved or Archived. See compliance history below.

Risk classification follows EPA's published values for safe drinking water, with caution and concern bands reviewed by a clinician. Past resolved violations do not influence this card. See methodology.

Lead service line inventory

Utility reports no confirmed lead service lines

LLANO COUNTY MUD 1 reports 0 confirmed lead service lines, 259 non-lead, 0 unknown (total 259) in the EPA SDWIS service line inventory (2026Q1).

  • 0 confirmed lead service lines
  • 0 galvanized requiring replacement (LCRI treats these as lead)
  • 0 unknown (0.0% of total)
  • 259 confirmed non-lead (100.0%)
  • 259 total service lines in the system
What to do if your service line might be lead
  1. Ask your utility to check the service-line classification for your specific address. Many utilities provide a public address-lookup tool linked from the inventory page.
  2. Get on the replacement queue. Under the LCRI, utilities must replace all lead and galvanized-requiring- replacement lines within 10 years (clock generally starts November 2027). Some prioritize requests.
  3. Until the line is replaced: flush the tap 30 seconds after long stagnation, use cold water for drinking and cooking, and consider an NSF/ANSI 53 lead-rated tap filter.
  4. Talk to your clinician about a blood lead test for anyone in the home, especially a pregnant person or a child under 6. Lead in drinking water guide.

Inventory data sourced from LLANO COUNTY MUD 1 ( retrieved May 24, 2026 ; curator confidence: high ). Confirmed against the original source automatically each month; see methodology.

Lead and copper test results

The most recent measurement per contaminant from EPA's Lead and Copper Rule sampling.

Why only lead and copper, and not arsenic, nitrate, or others?

EPA's bulk SDWIS download is the only nationwide per-system sample data they publish, and it only includes the Lead and Copper Rule table. Values for other regulated contaminants (TTHMs, nitrate, arsenic, etc.) appear on this page only when they trigger a violation. For the full per-system contaminant suite, see the utility's annual Consumer Confidence Report (link further down the page).

Most recent measurements per contaminant (Lead and Copper Rule) . Sorted by risk: concern first, then caution, then unrated, then safe.
Contaminant Most recent Date Risk
PB90
0.00111 mg/L December 31, 2023 Caution

Data from EPA SDWIS (Lead and Copper Rule sample table) , last refreshed May 24, 2026.

Fluoride

Per CDC My Water's Fluoride

LLANO COUNTY MUD 1 does not add fluoride to its drinking water.

This system has not reported adding fluoride to its water on CDC's My Water's Fluoride listing. Natural fluoride may still be present at trace levels from the source water; the utility's annual water quality report has the latest measured concentration.

Source: CDC My Water's Fluoride, listed under LLANO COUNTY MUD NO 1 (Llano County). Verify on CDC's site .

Area context

Llano County, TX (2020 data)

Community water systems
17 of 34 add fluoride
Population on fluoridated water
3,966 of 34,318 (11.6%)

Texas statewide (2020 data)

Population on fluoridated water
19,743,163 of 27,818,869 (71.0%)
Community water systems adding fluoride
2,573 of 6,046

Data from CDC My Water's Fluoride (per-system status) , last refreshed May 19, 2026.

Data from CDC Water Fluoridation Reporting System (state and county aggregates) , last refreshed May 16, 2026.

Recorded contaminant measurements (from violations)

When this system exceeded a regulatory limit and EPA recorded the measured value, that value is shown here. These are not routine sample results: they are the values the violation was triggered on.

Measured values from recorded violations . Most recent first.
Period Contaminant Measured Federal MCL Status
January 1, 2022Tthm0.089MG/L0.08 MG/L Health-based
January 1, 2022Tthm0.089MG/L0.08 MG/L Health-based
January 1, 2022Tthm0.089MG/L0.08 MG/L Health-based
January 1, 2022Tthm0.089MG/L0.08 MG/L Health-based
January 1, 2022Tthm0.089MG/L0.08 MG/L Health-based
October 1, 2021Tthm0.092MG/L0.08 MG/L Health-based
October 1, 2021Tthm0.092MG/L0.08 MG/L Health-based
October 1, 2021Tthm0.092MG/L0.08 MG/L Health-based
October 1, 2021Tthm0.092MG/L0.08 MG/L Health-based
October 1, 2021Tthm0.092MG/L0.08 MG/L Health-based
October 1, 2021Tthm0.092MG/L0.08 MG/L Health-based
July 1, 2021Tthm0.086MG/L0.08 MG/L Health-based
July 1, 2021Tthm0.086MG/L0.08 MG/L Health-based
July 1, 2021Tthm0.086MG/L0.08 MG/L Health-based
July 1, 2021Tthm0.086MG/L0.08 MG/L Health-based
July 1, 2021Tthm0.086MG/L0.08 MG/L Health-based
July 1, 2021Tthm0.086MG/L0.08 MG/L Health-based

Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.

Compliance history

EPA-recorded violations against this system over the last 5 years.

How to read this section

Health-based violations are when a measured limit was exceeded; the measured concentration is shown alongside the EPA federal limit where SDWIS published it. Monitoring and reporting items are paperwork issues (missed sample dates, late filings) that do not themselves indicate unsafe water.

26 resolved health-based violations in the last 5 years

All 26 health-based violations in the last 5 years are marked Resolved or Archived. Past violations do not represent current water quality.

Health-based violations in the last 5 years
Period start Contaminant What happened Measured level Status
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Not reported Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Not reported Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Not reported Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Not reported Resolved
June 1, 2022 Revised Total Coliform Rule Maximum Contaminant Level Violation, E. coli (RTCR) Not reported Resolved
June 1, 2022 Revised Total Coliform Rule Maximum Contaminant Level Violation, E. coli (RTCR) Not reported Resolved
June 1, 2022 Revised Total Coliform Rule Maximum Contaminant Level Violation, E. coli (RTCR) Not reported Resolved
June 1, 2022 Revised Total Coliform Rule Maximum Contaminant Level Violation, E. coli (RTCR) Not reported Resolved
June 1, 2022 Revised Total Coliform Rule Maximum Contaminant Level Violation, E. coli (RTCR) Not reported Resolved
January 1, 2022 Tthm Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2022 Tthm Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2022 Tthm Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2022 Tthm Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2022 Tthm Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.092 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.092 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.092 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.092 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.092 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.092 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2021 Tthm Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.080 MG/L
Resolved
21 monitoring and reporting item s (paperwork) , 3 still open · these are not health risks
Monitoring and reporting items in the last 5 years
Period start Relates to Item Status
July 1, 2025 Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Unaddressed
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Resolved
June 11, 2023 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
April 9, 2023 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
July 7, 2022 Public Notice Public Notification Violation for NPDWR Violation Resolved
July 7, 2022 Public Notice Public Notification Violation for NPDWR Violation Resolved
April 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
April 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
April 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
March 15, 2022 Tthm Failure Submit IDSE/Subpart V Plan Rpt Resolved
March 15, 2022 Tthm Failure Submit IDSE/Subpart V Plan Rpt Resolved
March 15, 2022 Tthm Failure Submit IDSE/Subpart V Plan Rpt Resolved
March 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
March 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
March 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
March 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
October 29, 2021 Public Notice Public Notification Violation for NPDWR Violation Resolved
October 29, 2021 Public Notice Public Notification Violation for NPDWR Violation Resolved
69 older violation s (5-10 years ago) · 54 health-based, 15 paperwork , all resolved
Violations 5-10 years ago (69 total)
Period start Relates to Item Measured level Status
April 8, 2019 Public Notice Public Notification Violation for NPDWR Violation Resolved
April 8, 2019 Public Notice Public Notification Violation for NPDWR Violation Resolved
April 8, 2019 Public Notice Public Notification Violation for NPDWR Violation Resolved
December 1, 2018 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
December 1, 2018 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
December 1, 2018 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
December 1, 2018 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
February 27, 2018 Tthm Failure Submit IDSE/Subpart V Plan Rpt Resolved
February 27, 2018 Tthm Failure Submit IDSE/Subpart V Plan Rpt Resolved
February 27, 2018 Tthm Failure Submit IDSE/Subpart V Plan Rpt Resolved
February 27, 2018 Tthm Failure Submit IDSE/Subpart V Plan Rpt Resolved
February 27, 2018 Total Haloacetic Acids (Haa5) Failure Submit IDSE/Subpart V Plan Rpt Resolved
February 27, 2018 Total Haloacetic Acids (Haa5) Failure Submit IDSE/Subpart V Plan Rpt Resolved
February 27, 2018 Total Haloacetic Acids (Haa5) Failure Submit IDSE/Subpart V Plan Rpt Resolved
February 27, 2018 Total Haloacetic Acids (Haa5) Failure Submit IDSE/Subpart V Plan Rpt Resolved
January 1, 2018 Tthm Maximum Contaminant Level Violation, Average
0.102 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2018 Tthm Maximum Contaminant Level Violation, Average
0.102 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2018 Tthm Maximum Contaminant Level Violation, Average
0.102 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2018 Tthm Maximum Contaminant Level Violation, Average
0.102 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2018 Tthm Maximum Contaminant Level Violation, Average
0.102 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2018 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2018 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2018 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2018 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.089 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.104 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.104 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.104 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.104 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.104 MG/L
MCL 0.080 MG/L
Resolved
October 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.104 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.134 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.134 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.134 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.134 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.134 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.134 MG/L
MCL 0.080 MG/L
Resolved
July 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.119 MG/L
MCL 0.060 MG/L
Resolved
July 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.119 MG/L
MCL 0.060 MG/L
Resolved
July 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.119 MG/L
MCL 0.060 MG/L
Resolved
July 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.119 MG/L
MCL 0.060 MG/L
Resolved
July 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.119 MG/L
MCL 0.060 MG/L
Resolved
April 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.080 MG/L
Resolved
April 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.080 MG/L
Resolved
April 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.080 MG/L
Resolved
April 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.060 MG/L
Resolved
April 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.060 MG/L
Resolved
April 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.060 MG/L
Resolved
April 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.060 MG/L
Resolved
April 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.080 MG/L
Resolved
April 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.080 MG/L
Resolved
April 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.086 MG/L
MCL 0.060 MG/L
Resolved
April 1, 2017 Tthm Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.080 MG/L
Resolved
January 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.065 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.065 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.065 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.065 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.065 MG/L
MCL 0.060 MG/L
Resolved
January 1, 2017 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.065 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2016 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.063 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2016 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.063 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2016 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.063 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2016 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.063 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2016 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.063 MG/L
MCL 0.060 MG/L
Resolved
October 1, 2016 Total Haloacetic Acids (Haa5) Maximum Contaminant Level Violation, Average
0.063 MG/L
MCL 0.060 MG/L
Resolved

Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.

Where to see every contaminant this utility tested for

EPA's bulk SDWIS dataset gives MyTapWater.us per-system measured values for lead and copper, plus violation records for everything else. To see every regulated contaminant this utility tested for in the past year (TTHMs, HAA5, nitrate, arsenic, fluoride, chromium, etc.) with measured values, read the utility's Consumer Confidence Report (CCR).

Every community water system is required by EPA to publish a CCR annually, by July 1, listing every contaminant they sampled, the measured value, the federal limit, and any health-based exceedances. Most utilities post the report online; some mail it with your bill.

How to find LLANO COUNTY MUD 1's CCR:

Compare nearby utilities by population served.

Contact this utility

Public administrative contact information for this water system, as filed with the EPA. Use this to ask about your service line, request your home's lead status, or report a water quality issue.

Administrator
STEWART, LD
Phone
830-598-5460
Mailing address
2900 BLUE LAKE DR
HORSESHOE BAY, TX 78657-5929

Where this page's data comes from

Bundle released 2026-Q2, regenerated May 24, 2026. Each section above also shows its own source date so you can tell at a glance how fresh that part of the page is.

Every value on this page is cross-verified before publication; read our methodology for the verification steps and corrections process.