JONAH WATER SUD water quality, TX

At a glance

2 above the safety limit, 3 detections to watch

Above the federal safety limit

PFOA

5.1 ng/L

PFOA is a "forever chemical" that builds up in the body. The most recent test was above the federal safety limit, and long-term exposure has been linked to cancer and other health problems.

Most recent EPA PFAS test · See details below
Above the federal safety limit

PFOS

5.7 ng/L

PFOS is a "forever chemical" that builds up in the body. The most recent test was above the federal safety limit, and long-term exposure has been linked to cancer and other health problems.

Most recent EPA PFAS test · See details below
Detected (no safe amount)

Lead

0.0025 mg/L

Public health experts agree no amount of lead in drinking water is safe. Even low levels can affect children's brain development.

Most recent lead and copper test · See details below
Detected — worth watching

lithium

0.0221 mg/L

lithium was found at a level below the federal limit, but high enough to keep an eye on.

Most recent EPA PFAS test · See details below
Detected — worth watching

PFHxS

5.6 ng/L

PFHxS was found at a level below the federal limit, but high enough to keep an eye on.

Most recent EPA PFAS test · See details below
No lead reported

Lead service lines

No lead reported in inventory

This utility's inventory reports no confirmed lead service lines and a low share of unclassified lines.

From the utility's published inventory · See details below
Not fluoridated

Fluoride

Not added

CDC's My Water's Fluoride listing does not report this system as fluoridating its drinking water.

Per CDC My Water's Fluoride · See details 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

JONAH WATER SUD reports 0 confirmed lead service lines, 14,301 non-lead, 0 unknown (total 14,301) 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)
14,301 confirmed non-lead (100.0%)
14,301 total service lines in the system

What to do if your service line might be lead

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.
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.
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.
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 JONAH WATER SUD ( 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
Lead PB90	0.0025 mg/L	June 30, 2023	Caution Lead has no safe level (MCLG=0). LCR action level is 0.015 mg/L for the 90th-percentile sample; the LCRI (Oct 2024) lowers the action level to 0.010 mg/L effective Nov 2027. Caution at any detection above LOD; concern anchored to the future LCRI value (0.010 mg/L) for forward consistency. Learn more about Lead. Source.

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

PFAS and emerging contaminants

This system was tested 480 times under EPA's latest PFAS monitoring program; 8 of the 30 chemicals tested were detected.

What is this testing program?

EPA's fifth Unregulated Contaminant Monitoring Rule cycle (UCMR 5, 2023 to 2025) required every public water system serving over 3,300 people to test for 29 per- and polyfluoroalkyl substances (PFAS) plus lithium; 30 chemicals in total. Most recent detection per chemical shown below.

Most recent UCMR 5 detection per contaminant . Sorted by risk: concern first, then caution, then unrated, then safe.
Contaminant	Most recent detection	Date	Risk
PFOA	5.1 ng/L	November 27, 2023	Concern April 2024 final rule. MCLG=0. Caution at typical lab reporting limit (0.5 ng/L); concern at EPA MCL (4 ppt), the most conservative federal/state value. Learn more about PFOA. Source.
PFOS	5.7 ng/L	November 27, 2023	Concern April 2024 final rule. MCLG=0. Caution at typical lab reporting limit (0.5 ng/L); concern at EPA MCL (4 ppt). Learn more about PFOS. Source.
lithium	0.0221 mg/L	February 5, 2024	Caution HAL only; not enforceable. UCMR-monitored. Learn more about lithium. Source.
PFHxS	5.6 ng/L	November 27, 2023	Caution April 2024 final rule. EPA 10 ng/L MCL is contested 2025 to 2026 (pending rescission as of May 2025); value retained pending spring 2026 rulemaking. Learn more about PFHxS. Source.
PFBA	5.7 ng/L	March 11, 2024	No federal limit EPA has not set a federal drinking-water limit for this contaminant. It is among the substances EPA is studying under the Unregulated Contaminant Monitoring Rule (UCMR). See the guide for what the science currently says. Learn more about PFBA.
PFBS	4.6 ng/L	March 11, 2024	No federal limit EPA has not set a federal drinking-water limit for this contaminant. It is among the substances EPA is studying under the Unregulated Contaminant Monitoring Rule (UCMR). See the guide for what the science currently says. Learn more about PFBS.
PFHxA	5 ng/L	March 11, 2024	No federal limit EPA has not set a federal drinking-water limit for this contaminant. It is among the substances EPA is studying under the Unregulated Contaminant Monitoring Rule (UCMR). See the guide for what the science currently says. Learn more about PFHxA.
PFPeA	12.2 ng/L	March 11, 2024	No federal limit EPA has not set a federal drinking-water limit for this contaminant. It is among the substances EPA is studying under the Unregulated Contaminant Monitoring Rule (UCMR). See the guide for what the science currently says. Learn more about PFPeA.

Tested but not detected (22 contaminants)

EPA tested for these substances and every sample was below the minimum reporting level. Absence of detection does not mean true zero; it means below the laboratory's quantitation threshold.

Data from EPA UCMR 5 (Unregulated Contaminant Monitoring Rule) , last refreshed May 24, 2026.

Fluoride

Per CDC My Water's Fluoride

JONAH WATER SUD 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 JONAH WATER SUD (Williamson County). Verify on CDC's site .

Area context

Williamson County, TX (2020 data)

Community water systems: 21 of 48 add fluoride
Population on fluoridated water: 178,048 of 483,898 (36.8%)

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.

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.

No health-based violations

No health-based violations on file in the last 5 years. EPA recorded 4 monitoring or reporting items (paperwork) during the same period.

4 monitoring and reporting item s (paperwork) · these are not health risks

Monitoring and reporting items in the last 5 years
Period start	Relates to	Item	Status
October 11, 2023	E. Coli	Monitoring, Source Water (GWR)	Resolved
October 11, 2023	E. Coli	Monitoring, Source Water (GWR)	Resolved
October 11, 2023	E. Coli	Monitoring, Source Water (GWR)	Resolved
October 11, 2023	E. Coli	Monitoring, Source Water (GWR)	Resolved

8 older violation s (5-10 years ago) · 8 health-based, 0 paperwork , all resolved

Violations 5-10 years ago (8 total)
Period start	Relates to	Item	Measured level	Status
April 1, 2019	Tthm	Maximum Contaminant Level Violation, Average	0.081 MG/L MCL 0.080 MG/L	Resolved
April 1, 2019	Tthm	Maximum Contaminant Level Violation, Average	0.081 MG/L MCL 0.080 MG/L	Resolved
April 1, 2019	Tthm	Maximum Contaminant Level Violation, Average	0.081 MG/L MCL 0.080 MG/L	Resolved
April 1, 2019	Tthm	Maximum Contaminant Level Violation, Average	0.081 MG/L MCL 0.080 MG/L	Resolved
July 1, 2018	Tthm	Maximum Contaminant Level Violation, Average	0.084 MG/L MCL 0.080 MG/L	Resolved
July 1, 2018	Tthm	Maximum Contaminant Level Violation, Average	0.084 MG/L MCL 0.080 MG/L	Resolved
July 1, 2018	Tthm	Maximum Contaminant Level Violation, Average	0.084 MG/L MCL 0.080 MG/L	Resolved
July 1, 2018	Tthm	Maximum Contaminant Level Violation, Average	0.084 MG/L MCL 0.080 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 JONAH WATER SUD's CCR:

Search the web for "JONAH WATER SUD consumer confidence report" . The PDF is usually on the utility's own website.
Or call the utility directly. Their phone number is in the contact section below.

Compare nearby utilities by population served.

CITY OF GEORGETOWN
192k served · Williamson County
CITY OF ROUND ROCK
131k served · Williamson County
CITY OF LEANDER
98k served · Williamson County
CITY OF CEDAR PARK
87k served · Williamson County
CITY OF HUTTO
30k served · Williamson County

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: SHIRES, DEREK
Phone: 512-759-1286
Mailing address: 4050 FM 1660
HUTTO, TX 78634-3295

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.

EPA SDWIS bulk download — last refreshed May 24, 2026 (system info, violations, lead and copper samples).
EPA UCMR 5 (Unregulated Contaminant Monitoring Rule) — last refreshed May 24, 2026 (PFAS and lithium).
Lead service line inventory — last refreshed May 24, 2026 (from the utility's reported inventory).
CDC My Water's Fluoride — last refreshed May 19, 2026 (per-system Yes/No fluoridation status).
CDC Water Fluoridation Reporting System — last refreshed May 16, 2026 (state and county fluoridation aggregates).

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