Indiana Administrative Code
Title 327 - WATER POLLUTION CONTROL DIVISION
Article 8 - PUBLIC WATER SUPPLY
Rule 2.1 - Consumer Confidence Reports
Section 2.1-16 - Drinking water violations; other situations requiring public notice

Universal Citation: 327 IN Admin Code 2.1-16

Current through September 18, 2024

Authority: IC 13-13-5; IC 13-14-8-2; IC 13-14-8-7; IC 13-18-3-1; IC 13-18-3-2; IC 13-18-16-8; IC 13-18-16-9

Affected: IC 13-18-2; IC 13-18-16

Sec. 16.

(a) Drinking water violations and other situations that require public notice according to this rule are contained in the following table:

Table 16. Drinking Water Violations and Other Situations Requiring Public Notice

Contaminant MCL/MRDL/TT/AL Violations Monitoring and Testing Procedure Violations
Tier of Public Notice Required Citation Tier of Public Notice Required Citation
I. Violations of Drinking Water Regulations:
A. Microbiological Contaminants
1a. Total coliform1 2 327 IAC 8-2-7(a) 3

327 IAC 8-2-8;

327 IAC 8-2-8.1;

327 IAC 8-2-8(f);

327 IAC 8-2-8.2;

327 IAC 8-2-8.3
1b. Total coliform (Monitoring or TT violations resulting from failure to perform assessments or corrective actions, monitoring violations, and reporting violations)2 2 40 CFR 141.860(b)(1) * 3 40 CFR 141.860(c)(1) and 40 CFR 141.860(d)(1) *
1c. Seasonal system failure to follow state-approved start-up plan prior to serving water to the public or failure to provide certification to the commissioner.2 2 40 CFR 141.860(b)(2) * 3 40 CFR 141.860(d)(3) *
2a. Fecal coliform/E.coli1 1 327 IAC 8-2-7(b) 1, 3 (see subsection (b)(2)) 327 IAC 8-2-8.3
2b. E. coli2 1 40 CFR 141.860(a) * 3

40 CFR 141.860(c)(1),

40 CFR 141.860(d)(1), and

40 CFR 141.860(d)(2) *

2c. E. coli (TT violations resulting from failure to perform level 2 assessments or corrective action)2 2 40 CFR 141.860(b)(1) *
3. Turbidity (resulting from a single exceedance of maximum allowable turbidity levels) (TT) 2,1

327 IAC 8-2-8.5(a);

327 IAC 8-2.6-3(1)(B);

327 IAC 8-2.6-3(2);

327 IAC 8-2.6-3(3)

 3

327 IAC 8-2-8.8(b);

327 IAC 8-2.6-4
4. Surface water treatment rule violations, other than violations resulting from single exceedance of maximum allowable turbidity level (TT) 2

327 IAC 8-2-8.5;

327 IAC 8-2-8.6

 3 327 IAC 8-2-8.8
5. Interim enhanced surface water treatment rule violations, other than violations resulting from single exceedance of maximum allowable turbidity level (TT) 2

327 IAC 8-2.6-1;

327 IAC 8-2.6-2;

327 IAC 8-2.6-3

 3

327 IAC 8-2.6-2;

327 IAC 8-2.6-4
6. Filter backwash recycling rule 2 327 IAC 8-2.6-6 3 327 IAC 8-2.6-6
7. Long term 1 enhanced surface water treatment rule violations, other than violations resulting from single exceedance of maximum allowable turbidity level (TT) 2

327 IAC 8-2.6-1;

327 IAC 8-2.6-2.1;

327 IAC 8-2.6-3

 3

327 IAC 8-2.6-2.1;

327 IAC 8-2.6-4
8. Long term 2 enhanced surface water treatment rule violations 2 327 IAC 8-2.6-11 through 327 IAC 8-2.6-20 2, 3

327 IAC 8-2.6-8(b)(1) through 327 IAC 8-2.6-8(b)(5) and

327 IAC 8-2.6-9 and

327 IAC 8-2.6-10
9. Ground water rule violations 2 327 IAC 8-2.3-6 3

327 IAC 8-2.3-4(h);

327 IAC 8-2.3-6(d)
B. Inorganic Chemicals (IOCs)
1. Antimony 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)

2. Arsenic 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)
3. Asbestos (fibers >10 µm) 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(d)
4. Barium 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)
5. Beryllium 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)
6. Cadmium 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)
7. Chromium (total) 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)

8. Cyanide 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)
9. Fluoride 2 327 IAC 8-2-4(c) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)
10. Mercury (inorganic) 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)

11. Nitrate 1 327 IAC 8-2-4(b) 1, 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(f);

327 IAC 8-2-4.1(h)(2)

12. Nitrite 1 327 IAC 8-2-4(b) 1, 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(g);

327 IAC 8-2-4.1(h)(2)
13. Total nitrate and nitrite 1 327 IAC 8-2-4(b) 3 327 IAC 8-2-4.1(c)
14. Selenium 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)
15. Thallium 2 327 IAC 8-2-4(d) 3

327 IAC 8-2-4.1(c);

327 IAC 8-2-4.1(e)

C. Lead and Copper Rule
1. Lead and copper rule (TT) 2

327 IAC 8-2-36;

327 IAC 8-2-40;

327 IAC 8-2-41;

327 IAC 8-2-42;

327 IAC 8-2-43;

327 IAC 8-2-44

 3

327 IAC 8-2-37;

327 IAC 8-2-38;

327 IAC 8-2-39;

327 IAC 8-2-45
D. Synthetic Organic Chemicals (SOCs)
1. 2,4-D 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
2. 2,4,5-TP (silvex) 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
3. Alachlor 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
4. Atrazine 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
5. Benzo[a]pyrene (PAHs) 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
6. Carbofuran 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
7. Chlordane 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
8. Dalapon 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
9. Di (2-ethylhexyl) adipate 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
10. Di (2-ethylhexyl) phthalate 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
11. Dibromochloropropane 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
12. Dinoseb 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
13. Dioxin (2,3,7,8-TCDD) 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
14. Diquat 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
15. Endothall 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
16. Endrin 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
17. Ethylene dibromide 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
18. Glyphosate 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
19. Heptachlor 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
20. Heptachlor epoxide 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
21. Hexachlorobenzene 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
22. Hexachlorocyclopentad iene 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
23. Lindane 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
24. Methoxychlor 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
25. Oxamyl (vydate) 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
26. Pentachlorophenol 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
27. Picloram 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
28. Polychlorinated biphenyls (PCBs) 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
29. Simazine 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
30. Toxaphene 2 327 IAC 8-2-5(a) 3 327 IAC 8-2-5.1
E. Volatile Organic Chemicals (VOCs)
1. Benzene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
2. Carbon tetrachloride 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
3. Chlorobenzene (monochlorobenzene) 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
4. o-Dichlorobenzene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
5. p-Dichlorobenzene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
6. 1,2-Dichloroethane 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
7. 1,1-Dichloroethylene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
8. cis-1,2-Dichloroethylene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
9. trans-1,2-Dichloroethylene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
10. Dichloromethane 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
11. 1,2-Dichloropropane 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
12. Ethylbenzene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
13. Styrene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
14. Tetrachloroethylene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
15. Toluene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
16. 1,2,4-Trichlorobenzene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
17. 1,1,1-Trichloroethane 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
18. 1,1,2-Trichloroethane 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
19. Trichloroethylene 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
20. Vinyl chloride 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
21. Xylenes (total) 2 327 IAC 8-2-5.4(a) 3 327 IAC 8-2-5.5
F. Radioactive Contaminants
1. Beta/photon emitters 2 327 IAC 8-2-10 3

327 IAC 8-2-10.2;

327 IAC 8-2-10.2(b)
2. Alpha emitters 2 327 IAC 8-2-9(2) 3

327 IAC 8-2-10.2;

327 IAC 8-2-10.2(a)
3. Combined radium (226 and 228) 2 327 IAC 8-2-9(1) 3

327 IAC 8-2-10.2;

327 IAC 8-2-10.2(a)
4. Uranium 2 327 IAC 8-2-9(3) 3

327 IAC 8-2-10.2;

327 IAC 8-2-10.2(a)
G. Disinfection Byproducts (DBPs). Where disinfection is used in the treatment of drinking water, disinfectants combine with organic and inorganic matter present in water to form chemicals called DBPs. U.S. EPA sets standards for controlling the levels of DBPs in drinking water.
1. TTHMs 2 327 IAC 8-2.5-2 3

327 IAC 8-2.5-10(b)(1) through 327 IAC 8-2.5-10(b)(6) and

327 IAC 8-2.5-11 through 327 IAC 8-2.5-20
2. HAA5 2 327 IAC 8-2.5-2 3

327 IAC 8-2.5-6(a),

327 IAC 8-2.5-6(b) and

327 IAC 8-2.5-10(b)(1) through 327 IAC 8-2.5-10(b)(6),

327 IAC 8-2.5-11 through 327 IAC 8-2.5-20
3. Bromate 2 327 IAC 8-2.5-2(a) 3

327 IAC 8-2.5-6(a) and

327 IAC 8-2.5-6(b)
4. Chlorite 2 327 IAC 8-2.5-2(a) 3

327 IAC 8-2.5-6(a) and

327 IAC 8-2.5-6(b)
5. Chlorine (MRDL) 2 327 IAC 8-2.5-3(a) 3

327 IAC 8-2.5-6(a) and

327 IAC 8-2.5-6(c)
6. Chloramine (MRDL) 2 327 IAC 8-2.5-3(a) 3

327 IAC 8-2.5-6(a) and

327 IAC 8-2.5-6(c)
7. Chlorine dioxide (MRDL), where any 2 consecutive daily samples at entrance to distribution system only are above MRDL 2 327 IAC 8-2.5-3(a) 2, 3

327 IAC 8-2.5-6(a);

327 IAC 8-2.5-6(c); and

327 IAC 8-2.5-7(c)(2)

8. Chlorine dioxide (MRDL), where samples in distribution system the next day are also above MRDL 1 327 IAC 8-2.5-3(a) 1

327 IAC 8-2.5-6(a);

327 IAC 8-2.5-6(c); and

327 IAC 8-2.5-7(c)(2)
9. Control of DBP precursors - TOC (TT) 2

327 IAC 8-2.5-9(a) and

327 IAC 8-2.5-9(b)

 3

327 IAC 8-2.5-6(a) and

327 IAC 8-2.5-6(d)
10. Benchmarking and disinfection profiling N/A N/A 3

327 IAC 8-2.6-2;

327 IAC 8-2.6-2.1
11. Development of monitoring plan N/A N/A 3 327 IAC 8-2.5-6(f)
H. Other Treatment Techniques
1. Acrylamide (TT) 2 327 IAC 8-2-35 N/A N/A
2. Epichlorohydrin (TT) 2 327 IAC 8-2-35 N/A N/A
II. Unregulated Contaminant Monitoring:
A. Nickel N/A N/A 3 327 IAC 8-2-4.1(e)
B. Unregulated contaminant monitoring N/A N/A 3 40 CFR 141.40 *
III. Other Situations Requiring Public Notification:
A. Fluoride secondary maximum contaminant level (SMCL) exceedance 3 40 CFR 143.3 * N/A N/A
B. Exceedance of nitrate MCL for an NCWS as allowed by the commissioner 1 327 IAC 8-2-4(b) N/A N/A
C. Availability of unregulated contaminant monitoring data 3 40 CFR 141.40 * N/A N/A
D. Waterborne disease outbreak 1 327 IAC 8-2-1 N/A N/A
E. Other waterborne emergency 1 N/A N/A N/A
F. Source water sample positive for ground water rule fecal indicators: E. coli, enterococci, or coliphage 1 327 IAC 8-2.3-4(g) N/A N/A
G. Other situations as determined by the commissioner 1, 2, 3 N/A N/A N/A
1 Until March 31, 2016.

2 Beginning April 1, 2016.

Key:

MCL = Maximum contaminant level.

MRDL = Maximum residual disinfectant level.

TT = Treatment technique.

Violations of drinking water regulations include violations of MCL, MRDL, TT, monitoring, and testing procedure requirements.

(b) Drinking water violations and other situations that require public notice according to this rule are contained in the following provisions:

(1) Violations and other situations not listed in Table 16 in subsection (a), such as reporting violations and failure to prepare the consumer confidence report do not require notice, unless otherwise determined by the commissioner. The commissioner may require a more stringent public notice tier, such as:
(A) Tier 1 instead of Tier 2; or

(B) Tier 2 instead of Tier 3;

for specific violations and situations listed in Table 16 in subsection (a).

(2) Failure to test for fecal coliform or E. coli is a Tier 1 violation if testing is not done after any repeat sample tests positive for coliform. All other total coliform monitoring and testing procedure violations are Tier 3.

(3) A PWS with a treatment technique violation involving a single exceedance of maximum turbidity limit under the:
(A) surface water treatment rule (SWTR) located at 327 IAC 8-2-8.5 through 327 IAC 8-2-8.8;

(B) interim enhanced surface water treatment rule (IESWTR), located at 327 IAC 8-2.6-1 through 327 IAC 8-2.6-5; or

(C) long term 1 enhanced surface water treatment rule (LT1ESWTR), located at 327 IAC 8-2.6-1 through 327 IAC 8-2.6-5;

is required to initiate consultation with the commissioner within twenty-four (24) hours after learning of the violation. Based on this consultation, the commissioner may subsequently decide to elevate the violation to Tier 1. If a PWS is unable to make contact with the commissioner in the twenty-four (24) hour period, the violation is automatically elevated to Tier 1.

(4) Failure to take a confirmation sample within twenty-four (24) hours for nitrate or nitrite after an initial sample exceeds the MCL is a Tier 1 Violation. Other monitoring violations for nitrate are Tier 3.

(5) Failure to monitor for chlorine dioxide at the entrance to the distribution system the day after exceeding the MRDL is a Tier 2 violation.

(6) If any daily sample taken at the entrance to the distribution system exceeds the MRDL for chlorine dioxide and one (1) or more samples taken in the distribution system the next day exceed the MRDL, Tier 1 notification is required. Failure to take the required samples in the distribution system after the MRDL is exceeded at the entry point also triggers Tier 1 notification.

(7) Other waterborne emergencies require a Tier 1 public notice under section 8(a) of this rule for situations that do not meet the definition of a waterborne disease outbreak given in 327 IAC 8-2-1 but still have the potential to have serious adverse effects on health as a result of short term exposure. These waterborne emergencies could include outbreaks not related to treatment deficiencies, as well as situations that have the potential to cause outbreaks, such as any of the following:
(A) Failures or significant interruption in water treatment processes.

(B) Natural disasters that disrupt the water supply or distribution system.

(C) Chemical spills.

(D) Unexpected loading of possible pathogens into the source water.

(8) The commissioner may place other situations in any tier believed appropriate, based on threat to public health.

(9) Failure to collect three (3) or more samples for Cryptosporidium is a Tier 2 violation requiring special notice as specified in section 18 of this rule.

*These documents are incorporated by reference. Copies may be obtained from the Government Publishing Office, www.gpo.gov, or are available for review at the Indiana Department of Environmental Management, Office of Legal Counsel, 100 North Senate Avenue, Thirteenth Floor, Indianapolis, Indiana 46204.

Disclaimer: These regulations may not be the most recent version. Indiana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.