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Calera, OK Tap Water Quality 2026

Water quality report for Calera, OK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Calera's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Bryan County Rural Water District #5 PWSID: OK3000704 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.56 ppb, 4% of the action level and no violations are open. No PFAS was detected.

B

Calera earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 0.56 ppb — 4% of the federal action level
PFAS tested, none detected
34 violations since 2015, 24 health-based
No violations currently open
Calera's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.56 ppb — 4% of the federal action level
✓ Lower lead than 97% of Oklahoma utilities
Population Served
1474
~4637 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
34 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
4% of EPA action level
0.56 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.56 ppb, 4% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2026 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2026 Archived
E. COLI MONITORING AND REPORTING — 0 2025 Unaddressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.065 MG/L 0.060 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.062 MG/L 0.060 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.066 MG/L 0.060 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.07 MG/L 0.060 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.061 MG/L 0.060 mg/L 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.095 MG/L 0.060 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.123 MG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.09 MG/L 0.060 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.136 MG/L 0.080 mg/L 2016 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2016 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2016 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2016 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.124 MG/L 0.060 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.161 MG/L 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.116 MG/L 0.060 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.155 MG/L 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.107 MG/L 0.060 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2016 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.112 MG/L 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.085 MG/L 0.060 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.09 MG/L 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.092 MG/L 0.060 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.097 MG/L 0.080 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

34 violations are on record since 2015, of which 24 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Bryan County Rural Water District #5
PWSID OK3000704
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 1,474
Service connections 4,637
Systems serving this area 3
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Calera tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.56 ppb, 4% of the action level.
Does Calera water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Calera? ▼
Bryan County Rural Water District #5 (PWSID OK3000704), one of 3 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2025-06-24. No significant deficiencies were recorded.

What Should Calera Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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