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WaterVerge

Water quality report · updated Jul 2026

Is Elm Mott, TX Tap Water Safe to Drink?

Graded B+, with 4 unresolved violations on record. See what was cited — and what it means for your tap. What to do ↓

0 contaminants over a legal limit
0.0 ppb lead, 90th percentile · low
4 unresolved violations
3K people served by 1 water system

PWSID TX1550002 · moderate data confidence · local government utility

Reviewed by WaterVerge Editorial Team · Last updated July 2026
B 84.5 / 100

#228 of 1067Texas cities
How we grade →

01The verdict: is Elm Mott water safe?

Elm Mott's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (84.5/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 3,100 residents using groundwater (wells).

The concern

4 unresolved violations on record

EPA records show open compliance items for this system. Most are administrative, but unresolved items are worth watching.

See what was cited ↓
The good news

Lead is well under the limit

90th-percentile lead is 0.0 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.

See the trend ↓
Keep watching

1 violation in the last five years

Recent compliance history is the best predictor of future problems — the year-by-year record is below.

See the record ↓

Elm Mott's drinking water received a grade of B+ (84.5 out of 100), indicating good water quality. The city's 1 water system serves approximately 3,100 residents using groundwater.

Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program. The system has 5 violations on record, including 0 health-based violations. 4 remain unresolved.

Elm Mott ranks #228 out of 1067 cities in Texas for water quality, placing it above average in the state. Elm Mott relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff. As a small community water system, Elm Mott may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

How the 84.5/100 breaks down Methodology →
ViolationsHistorical violation record including health-based and monitoring violations.
42.5 / 45A
Lead & CopperLead at 0.0 ppb (90th percentile).
20 / 20A
ContaminantsPFAS + legacy contaminant analysis.
17 / 20B
ComplianceMonitoring and reporting compliance with EPA regulations.
0 / 10F
Source RiskWater source: Groundwater.
5 / 5A

02What's in Elm Mott's water

Every contaminant flagged in Elm Mott, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.

1 detection · sorted by % of legal limit
Over the limit Elevated — watch Within limits
0 50% LEGAL LIMIT 150%
1 contaminant tested under EPA SDWIS, LCR and UCMR programs · 1 detected · not yet tested for PFAS under UCMR 5

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.0 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

03Elm Mott's ten-year track record

Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 5 violations on record, including 0 health-based violations. 4 remain unresolved.

9 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.

1 monitoring & paperwork 1 still unresolved
UpdateWater quality data updatedLatest EPA compliance and testing data incorporated into Elm Mott's water quality assessment. Grade: B+ (84.5/100).
Violation1 drinking water violation recordedContaminants: E. COLI.Open
Violation1 drinking water violation recordedContaminants: Lead and Copper Rule.Open
Violation1 drinking water violation recordedContaminants: Chlorine.Resolved
DisasterHURRICANE IKEFederal disaster declaration (FEMA DR-3294). Hurricane event — may have impacted local water infrastructure.
DisasterHURRICANE DEANFederal disaster declaration (FEMA DR-3277). Hurricane event — may have impacted local water infrastructure.
Lead, 90th percentileppb · lower is better
05101520EPA action level · 15 ppb1993 — 4.2 ppb1994 — 1 ppb1995 — 8.6 ppb1996 — 2.8 ppb1999 — 6.4 ppb2002 — 2.1 ppb2023 — 0 ppb4.201993199519992023

Down 4.2 ppb since 1993. Latest reading: 0 ppb (2023) — 0% of the action level. Sampled at higher-risk homes (90th percentile).

04Where Elm Mott's water comes from

Elm Mott's drinking water is drawn from underground aquifers through wells.

Source

Groundwater

Underground aquifers reached by wells — naturally filtered, but can carry minerals like arsenic and nitrate.

Treatment

Local treatment

Groundwater generally needs less treatment — typically disinfection and, where needed, mineral removal.

Distribution

1 system

1 water system, operated under local government ownership.

Delivery

3,100 people

Residents served across Elm Mott's service area.

Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals. Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds. The system is operated by local government ownership and serves approximately 3,100 people through 1 water system.

System namePWSIDPopulationSource
MCLENNAN COUNTY WCID 2 TX1550002 3,100 Groundwater

Water bodies near Elm Mott

Waco Lk Nr Waco · lake Brazos Rv At Waco · river Tehuacana Ck At Hwy 6 Nr Waco · river

These water bodies shape the regional watershed and can indirectly affect groundwater quality.

05Pressure on Elm Mott's watershed

Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.

Flood & storm history

Recurring — declared disasters

3 federal disaster declarations on record for McLennan County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.

HURRICANE IKE Sep 2008 · DR-3294
HURRICANE DEAN Aug 2007 · DR-3277
HURRICANE RITA Sep 2005 · DR-1606

06How Elm Mott compares

Scores for nearby Texas cities on one line, with the average marked.

Elm Mott (this city)
84.5 · B+
Dallas
36.2 · F
Fort Worth
34.5 · F
San Antonio
33.1 · F
Austin
31.2 · F
Houston
27.8 · F

dashed line = Texas average (46/100)

Elm Mott scores 84.5/100above the Texas average of 46/100. It outscores 9 of 10 nearby cities. Full Texas rankings →

Mclennan water quality rankings
Compare all cities in the county — grades, violations, and contaminant data side by side.

07What to do at home

Steps matched to what testing actually found in Elm Mott's water — not generic advice.

Extra protection

A basic carbon filter still helps

Elm Mott's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.

Compare tested filters →
Know your report

Read your utility's annual report

Every utility must publish a yearly Consumer Confidence Report with its own testing results. It pairs well with the independent data on this page.

How to read a CCR →
Stay informed

Watch for Elm Mott alerts

This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.

All water alerts →

Frequently asked questions

Is Elm Mott, TX tap water safe to drink?

Elm Mott's water quality earned a grade of B+ (84.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #228 out of 1067 cities tested in Texas.

What contaminants are in Elm Mott's water?

Lead was measured at 0.0 ppb (90th percentile). 5 violations are on record.

How is Elm Mott's water quality grade calculated?

The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.

Do I need a water filter in Elm Mott?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Elm Mott's water come from?

Elm Mott's water is sourced from Groundwater. The city has 1 water system serving approximately 3,100 residents.

Is Elm Mott's groundwater at risk of contamination?

Elm Mott uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 5 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.

How does Elm Mott's water compare to other cities?

Elm Mott ranks #228 out of 1067 cities in Texas (better than 79% of state cities) and #5814 out of 15382 cities nationally (62th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Elm Mott's small water system affect quality?

Elm Mott's system serves approximately 3,100 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 5 violations on record.

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Service area: 1 ZIP code across Mclennan.
Show ZIP codes 76640
Sources: EPA SDWIS & ECHO · UCMR 3–5 · Lead & Copper Rule samples · EPA TRI · U.S. Drought Monitor · FEMA declarations. Data last updated Jul 2026. Analysis by the WaterVerge Editorial Team · methodology.