NPS CALLVILLE BAY
PWS ID: NV0002506 · BOULDER CITY, Nevada 89005
NPS CALLVILLE BAY serves 250 people in BOULDER CITY, Nevada using Surface Water water sources. It has 116 recorded EPA violations, including 46 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: NPS CALLVILLE BAY
NPS CALLVILLE BAY is a federal-owned community water system that delivers drinking water to 250 residents in BOULDER CITY, Nevada (Clark County) through 152 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 116 total violations for this system , of which 46 (40%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 55 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.
The most frequently cited contaminant at this system is TTHM, recorded in 46 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Nevada, EPA tracks 589 public water systems serving 3,455,285 people, with 56,333 cumulative violations and 6,657 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 95.6 violations. NPS CALLVILLE BAY's 116 violations sit above the Nevada average. Statewide, 50 of 57 UCMR5-tested systems have reported PFAS detections (87.7%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Federal
- Connections
- 152
- County
- Clark
- School/Daycare
- No
- MCL Violations
- 46
- Monitoring Violations
- 55
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 46 | 2010 |
| Chlorine | MR | 12 | 2023 |
| CYANIDE | MR | 6 | 2012 |
| Ethylbenzene | MR | 6 | 2024 |
| Xylenes, Total | MR | 6 | 2024 |
| Surface Water Treatment Rule | MR | 5 | 2005 |
| Lead and Copper Rule | MR | 4 | 2001 |
| Consumer Confidence Rule | Other | 4 | 2021 |
| Coliform (Pre-TCR) | Other | 4 | 1986 |
| Antimony, Total | MR | 3 | 2001 |
| Beryllium, Total | MR | 3 | 2001 |
| Nitrate | MR | 3 | 2019 |
| Nickel | MR | 3 | 2001 |
| Thallium, Total | MR | 3 | 2001 |
| Coliform (TCR) | MR | 1 | 1999 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for NPS CALLVILLE BAY.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID NV0002506 on SDWISSource: EPA SDWIS Federal Reports Search
Nevada Drinking Water Authority
Nevada's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.
Find NV regulator via EPA SDWISViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2024 | Ethylbenzene | MR | 6 | SDWIS / NV0002506 / 2992 |
| 2024 | Xylenes, Total | MR | 6 | SDWIS / NV0002506 / 2955 |
| 2023 | Chlorine | MR | 12 | SDWIS / NV0002506 / 0999 |
| 2021 | Consumer Confidence Rule | Other | 4 | SDWIS / NV0002506 / 7000 |
| 2019 | Nitrate | MR | 3 | SDWIS / NV0002506 / 1040 |
| 2012 | CYANIDE | MR | 6 | SDWIS / NV0002506 / 1024 |
| 2010 | TTHM | MCL | 46 | SDWIS / NV0002506 / 2950 |
| 2005 | Surface Water Treatment Rule | MR | 5 | SDWIS / NV0002506 / 0200 |
| 2001 | Lead and Copper Rule | MR | 4 | SDWIS / NV0002506 / 5000 |
| 2001 | Antimony, Total | MR | 3 | SDWIS / NV0002506 / 1074 |
| 2001 | Beryllium, Total | MR | 3 | SDWIS / NV0002506 / 1075 |
| 2001 | Nickel | MR | 3 | SDWIS / NV0002506 / 1036 |
| 2001 | Thallium, Total | MR | 3 | SDWIS / NV0002506 / 1085 |
| 1999 | Coliform (TCR) | MR | 1 | SDWIS / NV0002506 / 3100 |
| 1986 | Coliform (Pre-TCR) | Other | 4 | SDWIS / NV0002506 / 3000 |
How NPS CALLVILLE BAY Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | NPS CALLVILLE BAY | Nevada avg | Federal benchmark |
|---|---|---|---|
| Total violations | 116 | 95.6 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 46 | 11.3 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 87.7% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 250 | 5,866 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 589 regulated public water systems in Nevada.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for Nevada
Read our methodology — how this data is sourced, computed, and verified.